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{{Adams
{{Adams
| number = ML030730417
| number = ML21181A225
| issue date = 06/30/2003
| issue date = 12/17/2021
| title = Rev 32, Design, Fabrication, & Materials Code Case Acceptability, ASME Section Iii.
| title = 9, Design, Fabrication, and Materials Code Case Acceptability, ASME Section III
| author name =  
| author name = Lin B
| author affiliation = NRC/RES
| author affiliation = NRC/RES/DE
| addressee name =  
| addressee name =  
| addressee affiliation =  
| addressee affiliation =  
| docket =  
| docket =  
| license number =  
| license number =  
| contact person =  
| contact person = Roche-Rivera, R; Lin, B
| case reference number = DG-1090
| document report number = RG-1.084, Rev 39
| document report number = RG-1.084, Rev 32
| package number = ML21181A221
| document type = Regulatory Guide
| document type = Regulatory Guide
| page count = 55
| page count = 55
}}
}}
{{#Wiki_filter:Regulatory guides are issued to describe and make available to the public such information as methods acceptable to the NRC staff for implementing specific parts of theNRC's  regulations, techniques used by the staff in evaluating specific problems or postulated accidents, and data needed by the NRC staff in its review of applicationsfor permits and licenses. Regulatory guides are not substitutes for regulations, and compliance with them is not required. Methods and solutions different from those setout in the guides will be acceptable if they provide a basis for the findings requisite to the issuance or continuance of a permit or license by the Commission.This guide was issued after consideration of comments received from the public.  Comments and suggestions for improvements in these guides are encouraged at all times,and guides will be revised, as appropriate, to accommodate comments and to reflect new information or experience.  Written comments may be submitted to the Rulesand Directives Branch, ADM, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001.  Regulatory guides are issued in ten broad divisions:  1, Power Reactors; 2, Research and Test Reactors; 3, Fuels and Materials Facilities; 4, Environmental and Siting;5, Materials and Plant Protection; 6, Products; 7, Transportation; 8, Occupational Health; 9, Antitrust and Financial Review; and 10, General. Single copies of regulatory guides (which may be reproduced) may be obtained free of charge by writing the Distribution Services Section, U.S. Nuclear RegulatoryCommission, Washington, DC 20555-0001, or by fax to (301)415-2289, or by email to DISTRIBUTION@NRC.GOV. Electronic copies of this guide and other recently issuedguides are available at NRC's home page at <WWW.NRC.GOV> through the Electronic Reading Room, Accession Number ML030730417
{{#Wiki_filter:U.S. NUCLEAR REGULATORY COMMISSION
.U.S. NUCLEAR REGULATORY COMMISSION              Revision 32June 2003 REGULATORY GUIDEOFFICE OF NUCLEAR REGULATORY RESEARCHREGULATORY GUIDE 1.84(Draft was issued as DG-1090)DESIGN, FABRICATION, AND MATERIALS CODE CASEACCEPTABILITY, ASME SECTION III
 
REGULATORY GUIDE 1.84, REVISION 39
 
Issue Date: December 2021 Technical Lead: Bruce Lin
 
Written suggestions regarding this guide or development of new guides may be submitted through the NRCs public Web site in the NRC Library at https://nrcweb.nrc.gov/reading-rm/doc-collections/reg-guides/, under Document Collections, in Regulatory Guides, at https://nrcweb.nrc.gov/reading-rm/doc-collections/reg-guides/contactus.html.
 
Electronic copies of this RG, previous versions of this guide, and other recently issued guides are available through the NRCs public Web site under the Regulatory Guides document collection of the NRC Library at https://nrcweb.nrc.gov/reading-rm/doc- collections/reg-guides/. This RG is also available through the NRCs Agencywide Documents Access and Management System (ADAMS) at http://www.nrc.gov/reading-rm/adams.html, under Accession No. ML21181A225. The regulatory analysis may be found in ADAMS under Accession No. ML21196A096. The associated draft guide DG-1366 may be found in ADAMS under Accession No. ML20120A633, and the staff responses to the public comments on DG-1366 may be found in ADAMS under Accession No ML21196A100.
 
DESIGN, FABRICATION, AND MATERIALS CODE CASE
ACCEPTABILITY, ASME SECTION III  


==A. INTRODUCTION==
==A. INTRODUCTION==
General Design Criterion (GDC) 1, "Quality Standards and Records," of Appendix A,"General Design Criteria for Nuclear Power Plants," to 10 CFR Part 50, "Domestic Licensing ofProduction and Utilization Facilities," requires, in part, that structures, systems, and componentsimportant to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be performed. Where generally recognized codes and standards are used, Criterion 1 requires that they be identified and evaluated to determine their applicability, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keeping with the required safety function.Criterion 30, "Quality of Reactor Coolant Pressure Boundary," of Appendix A requires, inpart, that components that are part of the reactor coolant pressure boundary be designed, fabricated, erected, and tested to the highest quality standards practical.Appendix B, "Quality Assurance Criteria for Nuclear Power Plants and Fuel ProcessingPlants," to 10 CFR Part 50 requires, in part, that measures be established for the control ofspecial processing of materials and that proper testing be performed.Provisions of the American Society of Mechanical Engineers (ASME) Boiler and PressureVessel (BPV) Code have been used since 1971 as one part of the framework to establish the necessary design, fabrication, construction, testing, and performance requirements for structures, systems, and components important to safety. ASME standards committees develop, among other things, improved methods for the construction and inservice inspection (ISI) of ASME Class 1, 2, 3, MC (metal containment) and CC (concrete containment) nuclear power
Purpose
1  Copies may be obtained from the American Society of Mechanical Engineers, Three Park Avenue, New York, NY 10016-5990. Phone (212)591-8500; fax (212)591-8501; www.asme.org.
 
This regulatory guide (RG) lists the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code, Section III, Division 1, Rules for Construction of Nuclear Power Plant Components (Ref. 1), Code Cases that the U.S. Nuclear Regulatory Commission (NRC) has approved for use as voluntary alternatives to the mandatory ASME BPV Code provisions that are incorporated by reference into Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Domestic Licensing of Production and Utilization Facilities (Ref. 2).
 
Applicability 
 
This RG applies to reactor licensees and applicants subject to 10 CFR Part 50, Section 50.55a, Codes and standards.
 
Applicable Regulations
 
*
General Design Criterion (GDC) 1, Quality Standards and Records, of Appendix A, General Design Criteria for Nuclear Power Plants, to 10 CFR Part 50 requires, in part, that structures, systems, and components important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be performed. Where generally recognized codes and standards are used, GDC 1 requires that they be identified and evaluated to determine their applicability, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keeping with the required safety function.
 
*
10 CFR Part 50, Appendix A, GDC 30, Quality of Reactor Coolant Pressure Boundary, requires, in part, that components that are part of the reactor coolant pressure boundary be designed, fabricated, erected, and tested to the highest quality standards practical.
 
RG 1.84, Rev. 39, Page 2
*
10 CFR Part 50, Appendix B, Quality Assurance Criteria for Nuclear Power Plants and Fuel Processing Plants, requires, in part, that measures be established for the control of special processing of materials and that proper testing be performed.
 
*
10 CFR 50.55a(c) requires, in part, that components of the reactor coolant pressure boundary must be designed, fabricated, erected, and tested in accordance with the requirements for the Class 1 components of ASME BPV Code, Section III, or equivalent quality standards.
 
*
10 CFR 52.79(a)(11) (Ref. 3) requires the final safety analysis report to include a description of the program(s), and their implementation, necessary to ensure that the systems and components meet the requirements of the ASME Boiler and Pressure Vessel Code and the ASME Code for Operation and Maintenance of Nuclear Power Plants in accordance with 50.55a of this chapter.
 
Related Guidance
 
*
RG 1.147, Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1 (Ref. 4), lists the ASME BPV Code, Section XI, Rules for Inservice Inspection of Nuclear Power Plant Components, Code Cases that the NRC has approved for use as voluntary alternatives to the mandatory ASME BPV Code provisions that are incorporated into 10 CFR 50.55a.
 
*
RG 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code (Ref. 5), lists the ASME Operation and Maintenance Code (OM Code) Code Cases that the NRC has approved for use as voluntary alternatives to the mandatory ASME OM Code provisions that are incorporated into 10 CFR 50.55a.
 
*
RG 1.193, ASME Code Cases Not Approved for Use (Ref. 6), lists the ASME BPV Code, Section III and Section XI, Code Cases and the ASME OM Code Cases that the NRC has not approved for generic use.
 
*
RG 1.136, Design Limits, Loading Combinations, Materials, Construction, and Testing of Concrete Containments (Ref. 7), endorses ASME BPV Code, Section III, Division 2, Code for Concrete Containments and addresses the acceptance of ASME BPV Code, Section III, Division
2 Code Cases.
 
Purpose of this Regulatory Guide
 
The NRC incorporated this RG into 10 CFR 50.55a by reference. The RG contains new Code Cases and revisions to existing Code Cases that the staff has approved for use, as listed in Tables 1 and 2 of this guide. The RG also states the requirements that govern the use of Code Cases. Licensees may voluntarily use Code Cases approved by the NRC as an alternative to compliance with the ASME Code provisions that have been incorporated by reference into 10 CFR 50.55a. Because the status of Code Cases continually changes, the staff plans to periodically update 10 CFR 50.55a and this guide to accommodate new Code Cases and any revisions to existing Code Cases.
 
Paperwork Reduction Act 


2plant components.  A broad spectrum of stakeholders participate in the ASME process,which helps to ensure that the various interests are considered.The regulation in 10 CFR 50.55a(c), "Reactor Coolant Pressure Boundary,"requires, in part, that components of the reactor coolant pressure boundary be designed, fabricated, erected, and tested in accordance with the requirements for Class 1 components of Section III, "Rules for Construction of Nuclear Power PlantComponents,"1 of the ASME BPV Code or equivalent quality standards. The ASMEpublishes a new edition of the BPV Code, which includes Section III, every 3 years, and new addenda every year. The latest editions and addenda of Section III that have been approved for use by the NRC are referenced in 10 CFR 50.55a(b). The ASME also publishes Code Cases quarterly.  Code Cases provide alternatives developed and approved by ASME or explain the intent of existing Code requirements.  This regulatory guide identifies the Code Cases that have been determined by the NRC to be acceptable alternatives to applicable parts of Section III.  Section III Code Cases not yet endorsed by the NRC may be implemented through 10 CFR 50.55a(a)(3), which permits the use of alternatives to the Code requirements referenced in 10 CFR 50.55a provided that the proposed alternatives result in an acceptable level of quality and safety, and their use is authorized by the Director of the Office of Nuclear Reactor Regulation.The ASME Code is incorporated by reference into 10 CFR 50.55a. Code Casesapproved by the NRC provide an acceptable voluntary alternative to the mandatory ASME Code provisions.  Therefore, 10 CFR 50.55a has been amended to incorporate this guide by reference and it states the requirements governing the use of Code Cases.
This RG provides voluntary guidance for implementing the mandatory information collections in  
10 CFR Parts 50 and 52 that are subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et. seq.).  
These information collections were approved by the Office of Management and Budget (OMB), under control numbers 3150-0011 and 3150-0151, respectively. Send comments regarding this information


Because of the continuing change in the status of Code Cases, periodic updates to 10
RG 1.84, Rev. 39, Page 3 collection to the FOIA, Library, and Information Collections Branch ((T6-A10M), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by e-mail to Infocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, NEOB-10202 (3150-0011 and  
CFR 50.55a and this guide are planned to accommodate new Code Cases and any revisions of existing Code Cases.This regulatory guide does not contain a new or amended information collectionrequirement subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.).
3150-0151), Office of Management and Budget, Washington, DC, 20503.
Existing requirements were approved by the Office of Management and Budget, and the approval number is 3150-0011. If a means used to impose an information collection does not display a currently valid OMB control number, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
 
Public Protection Notification
 
The NRC may not conduct or sponsor, and a person is not required to respond to, a collection of information unless the document requesting or requiring the collection displays a currently valid OMB
control number.
 
RG 1.84, Rev. 39, Page 4


==B. DISCUSSION==
==B. DISCUSSION==
Previously, Regulatory Guide 1.84 was titled
Reason for Revision
"Design and Fabrication Code CaseAcceptability, ASME Section III, Division 1," and it listed only the Section III Code Casesoriented to design and fabrication.  Companion Regulatory Guide 1.85, "Materials CodeCase Acceptability, ASME Section III, Division 1," listed the Section III Code Casesoriented to materials and testing. Beginning with this revision, all Section III Code Cases that have been approved for use by the NRC are listed in this guide.  Hence, the title of Regulatory Guide 1.84 has been changed to
 
"Design, Fabrication, and Materials CodeCase Acceptability, ASME Section III.
RG 1.84, Revision 39, includes new information reviewed by the NRC on the Section III Code Cases listed in Supplements 0 through 7 to the 2015 Edition, Supplements 0 through 7 to the 2017 Edition, and Supplements 0 and 1 to the 2019 Edition of the ASME BPV Code. This revision updates and supersedes RG 1.84, Revision 38, which included information from Supplement 11 to the 2010 Edition and Supplements 0 through 7 to the 2013 Edition. This revision also removes ASME BPV Code, Section III, Division 2 and Division 3 Code Cases0F1 from this RG.


"  It should be noted that with this Revision 32,Division 1 has been deleted from the title.  Previous versions of the guide contained some Division 2 Code Cases, and this version contains some Division 3 Code Cases.
Background


2  Except for Code Cases pertaining to high-temperature gas-cooled reactors; Section III, Division 2, requirementsnot endorsed by the NRC; liquid metal; and submerged spent fuel waste casks.
Provisions of the ASME Code have been used since 1971 as one part of the framework to establish the necessary design, fabrication, construction, testing, and performance requirements for structures, systems, and components important to safety. Among other things, ASME standards committees develop improved methods for the construction and inservice inspection of ASME Class 1, 2, 3, metal containment (MC), and concrete containment (CC) nuclear power plant components. A broad spectrum of stakeholders participates in the ASME process to help ensure consideration of various interests.


3Hence, the title change reflects the revised scope of Regulatory Guide 1.84. RegulatoryGuide 1.85 will no longer be updated, but it will be withdrawn in the future.For Revision 32 to Regulatory Guide 1.84, the NRC staff reviewed the Section IIICode Cases listed in Supplement 4 to the 1992 Edition through Supplement 11 to the
ASME publishes a new edition of the BPV Code, which includes Section III, every 2 years. In
1998 Edition.
10 CFR 50.55a(a)(1)(i), the NRC references the latest edition of Section III that the agency has approved for use. ASME also publishes Code Cases quarterly. Code Cases provide alternatives that ASME
developed and approved. This RG identifies the Code Cases that the NRC has determined to be acceptable alternatives to applicable parts of Section III. Under 10 CFR 50.55a(z), a licensee or applicant may request authorization to use Section III Code Cases that the NRC has not yet endorsed. In 10 CFR 50.55a(z), the NRC permits the use of alternatives to the Code requirements referenced in 10 CFR 50.55a provided that the proposed alternatives result in an acceptable level of quality and safety and their use is authorized by the Director of the Office of Nuclear Reactor Regulation.


2  Appendix A to the guide lists the supplements reviewed, the edition, andthe Board on Nuclear Codes and Standards approval date.  Appendix B is a numerical list of the Code Cases addressed in these supplements.  The Code Cases are listed in five tables: Table 1, "Acceptable Section III Code Cases," contains the Code Cases thatare acceptable to the NRC for application in the design and construction of light-water- cooled nuclear power plants; Table 2, "Conditionally Acceptable Section III Code Cases," contains Code Cases that are acceptable provided that they are used with theidentified limitations or modifications, i.e., the Code Case is generally acceptable but the NRC has determined that the alternative requirements must be supplemented in order to provide an acceptable level of quality and safety; Table 3, "Annulled UnconditionallyApproved Section III Code Cases," contains the Code Cases that have been annulled bythe ASME; Table 4, "Annulled Conditionally Acceptable Section III Code Cases,"contains the Code Cases that the NRC determined to be acceptable provided that they are used with the identified limitations or modifications, but were subsequently annulled by the ASME; Table 5, "Section III Code Cases That Have Been Superseded byRevised Code Cases on or After July 1, 1974," lists Code Cases that have beensuperseded through revision.  Code Cases that the NRC determined to be unacceptable are listed in a new regulatory guide, "ASME Code Cases Not Approved for Use
The NRC incorporates the ASME BPV Code by reference into 10 CFR 50.55a. NRC approved Code Cases provide an acceptable voluntary alternative to the mandatory ASME Code provisions. The regulation at 10 CFR 50.55a(b)(4) provides the requirements related to the implementation of ASME
" (draftwas issued as DG-1112; final guide issued as Regulatory Guide 1.193).  It should be noted that Tables 1-5 provide comprehensive lists of Section III Code Cases since many older Code Cases are still in use, i.e., Section III, Division 1, applies only to new construction (the edition and addenda used in the construction of a plant were selected based upon the date of the construction permit and are not changed thereafter, except voluntarily by the licensee).Code Cases provide alternatives that were developed and approved by ASME toexisting Code requirements.  The Code Cases listed as approved in Tables 1 and 2 of this guide have been incorporated by reference into 10 CFR 50.55a. The Code Cases may be used voluntarily by licensees as an alternative to compliance with ASME Code provisions that have been incorporated by reference into 10 CFR 50.55a.Requirements related to implementation of Code Cases are provided in10 CFR 50.55a(b).  When a licensee initially applies a Code Case listed in Table 1 or 2, the licensee must implement the most recent version of that Code Case incorporated by reference in 10 CFR 50.55a.Code Cases may expire or be annulled because the provisions have beenincorporated into the Code, the application for which it was specifically developed no longer exists, or experience has shown that the design analysis or construction method is no longer adequate.  After a Code Case is annulled and 10 CFR 50.55a and this guide are amended, licensees may not implement that Code Case for the first time.  However, a licensee who implemented the Code Case prior to annulment may continue to use that Code Case until the licensee voluntarily updates its Section III Code of recor
Section III Code Cases. When a licensee initially applies a Code Case listed in Table 1 or 2 of this guide, it must implement the most recent version of that Code Case incorporated by reference in 10 CFR 50.55a.


====d. If a Code ====
ASME may annul a Code Case because its provisions have been incorporated into the Code, the application for which it was specifically developed no longer exists, or experience has shown that the design analysis or construction method is no longer required. After ASME annuls a Code Case and after the NRC amends 10 CFR 50.55a and this guide, applicants or licensees may not implement that Code Case for the first time. However, a licensee or an applicant that implemented the Code Case before its annulment may continue to use that Code Case until it voluntarily updates its Section III Code of Record.
4Case is incorporated by reference into 10 CFR 50.55a and later annulled by the ASMEbecause experience has shown that the design analysis or construction method is no longer adequate, the NRC will amend 10 CFR 50.55a and this guide to remove the approval of the annulled Code Case. Licensees should not begin to implement such annulled Code Cases in advance of the rulemaking. Notwithstanding these requirements, the Commission may impose new or revised Code requirements, including implementation schedules, that it determines are consistent with the backfit rule (i.e., 10 CFR 50.109).With regard to the use of any Code Case, it is the responsibility of the user tomake certain that the provisions of the Code Case do not conflict with regulatory requirements or licensee commitments.
 
If the NRC incorporated a Code Case by reference into 10 CFR 50.55a and ASME later annulled it because experience has shown that the design analysis or construction method is no longer required, the NRC will amend 10 CFR 50.55a and this guide to remove the approval of the annulled Code Case.
 
Licensees or applicants should not begin to implement such annulled Code Cases in advance of the rulemaking. Notwithstanding these requirements, the Commission may impose new or revised Code requirements, including implementation schedules, that it determines are consistent with 10 CFR 50.109,
 
1 Section III, Division 2 Code Cases are addressed in RG 1.136.  Section III, Division 3 Code Cases are addressed
 
in a new RG currently under development.
 
RG 1.84, Rev. 39, Page 5 Backfitting.
 
A Code Case may be revised, for example, to incorporate user experience. The licensee or applicant cannot apply an older or superseded version of the Code Case for the first time. If an applicant or a licensee applied a Code Case listed in Table 1 or 2 of this guide before it was listed as superseded, it may continue to use the Code Case until it updates its Construction Code of Record (an applicant would update its application). If a Code Case is incorporated by reference into 10 CFR 50.55a and ASME later issues a revised version of the Code Case because experience has shown that the design analysis, construction method, examination method, or testing method is inadequate, the NRC will amend 10 CFR 50.55a and the relevant RG to remove the approval of the superseded Code Case. Applicants and licensees should not begin to implement such superseded Code Cases in advance of the rulemaking.
 
With regard to the use of any Code Case, the user is responsible for ensuring that the provisions of the Code Case do not conflict with the licensees commitments or regulatory requirements.
 
RG 1.84, Rev. 39, Page 6


==C. REGULATORY POSITION==
==C. REGULATORY POSITION==
1. ACCEPTABLE CODE CASESThe Code Cases listed in Table 1 below are acceptable to the NRC forapplication in the design and construction of components and their supports for water- cooled nuclear power plants.  The ASME issues Section III Code Cases quarterly in supplements to a specific edition, i.e., a new edition of Section III is published every three years, and supplements are published quarterly. Hence, there are 12 supplements to each edition.  Column 3 of Table 1 lists the supplement and edition in which each Code Case was published (e.g., 7/95E means Code Case Supplement 7 to the 1995 Edition).TABLE 1 - ACCEPTABLE SECTION III CODE CASESCODE CASENUMBERTABLE 1ACCEPTABLE SECTION III CODE CASESSUPPLEMENT/EDITIONN-4-11Special Type 403 Modified Forgings or Bars, Section III,Division 1, Class 1 and CS, 5/98EN-7-1High Yield Strength Steel, Section III, Division 1, Class 19/98EN-20-4SB-163, Cold Worked UNS N08800; and SB-163 UNSN06600, UNS N06690, and UNS N08800 to Supplementary Requirements S2 of SB-163, Section III, Division 1, Class 14/98EN-60-5Material for Core Support Structures, Section III, Division 19/95EN-122-2Procedure for Evaluation of the Design of Rectangular CrossSection Attachments on Class 1 Piping, Section III, Division 18/98EN-131-1(1759-1)Material for Internal Pressure Retaining Items for PressureRelief Valves, Section III, Division 1, Class 1, 2, and 39/98EN-133-3Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 38/98E
For RG 1.84, Revision 39, the NRC reviewed the Section III Code Cases listed in Supplements 0
CODE CASENUMBERTABLE 1ACCEPTABLE SECTION III CODE CASESSUPPLEMENT/EDITION 5N-154-1Projection Resistance Welding of Valve Seats, Section III,Division 1, Classes 1, 2, and 39/98EN-160-1Finned Tubing for Construction, Section III, Division 18/98EN-171Postweld Heat Treatment of P-No. 1 Material, Section III, Division 25/92EN-192-2Use of Braided Flexible Connectors, Section III, Division 1, Class 2 and 35/98EN-205Use of Ductile Iron SA-395, Section III, Division 1, Class 35/98EN-208-2Fatigue Analysis for Precipitation Hardening Nickel AlloyBolting Material to Specification SA-637 N07718 for Class 1 Construction, Section III, Division 15/98EN-213Welded Radial Shear Bar Assemblies, Section III, Division 25/98EN-243Boundaries Within Castings Used for Core Support Structures,Section III, Division 1, Class CS9/95EN-304-4Use of 20Cr-25Ni-6Mo (Alloy UNS N08366) Plate, Sheet,Strip, and Welded Pipe, Class 2 and 3, Section III, Division 14/98EN-315Repair of Bellows, Section III, Division 19/98EN-318-5Procedure for Evaluation of the Design of Rectangular CrossSection Attachments on Class 2 or 3 Piping, Section III,
through 7 to the 2015 Edition, Supplements 0 through 7 to the 2017 Edition, and Supplements 0 and 1 to the 2019 Edition of the ASME BPV Code.1F2 RG 1.84, Revision 39 supersedes the information in Revision
Division 19/95EN-319-3Alternate Procedure for Evaluation of Stresses in Butt WeldingElbows in Class 1 Piping, Section III, Division 18/98EN-329Examination of Bar Material, Section III, Division 1, Class 16/98EN-345-1Attachment of AMS 5382 Alloy 31 Seat Rings by FrictionWelding, Section III, Division 1, Classes 1, 2, and 310/98EN-351Use of Subsize Charpy V-Notch Specimens, Section III, Division 18/98EN-369Resistance Welding of Bellows, Section III, Division 110/98EN-373-1Alternative PWHT Time at Temperature for P-No. 5 Material,Section III, Division 1, Classes 1, 2, and 31/98EN-387Certification of Level III NDE Examiner, Section III, Division 21/98EN-391-2Procedure for Evaluation of the Design of Hollow CircularCross Section Welded Attachments on Class 1 Piping, SectionIII, Division 11/98E
38. Appendix A to this guide lists the supplements reviewed by the NRC, the editions, the supplement numbers, and the numerical listing of Section III Code Cases in each supplement. Appendix B to this guide lists all current Section III Code Cases and table where each code case is listed. The following five tables list the Code Cases addressed by this RG:
CODE CASENUMBERTABLE 1ACCEPTABLE SECTION III CODE CASESSUPPLEMENT/EDITION 6N-392-3Procedure for Evaluation of the Design of Hollow CircularCross Section Welded Attachments on Classes 2 and 3 Piping, Section III, Division 112/95EN-394Restricting Lift to Achieve Reduced Relieving Capacities ofFull Lift, Nozzle Type, and Flat Seated Safety and Safety Relief Valves for Compressible Fluid Applications, Section III,
 
Division 1, Classes 2 and 312/95EN-395Laser Welding, Section III, Division 11/98EN-405-1Socket Welds, Section III, Division 112/95EN-438-1UNS N08367, Section III, Division 1, Class 2 and 3ConstructionReinstated5/95EN-439-1Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Forgings, Plate,Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction, Section III, Division 110/98EN-440-1Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2and 3 Construction, Section III, Division 110/98EN-441-2Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2and 3 Construction, Section III, Division 110/98EN-452Specialized Subcontracted Welding Process (Electron BeamWelding), Section III, Division 110/98EN-453-3Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNSN08925) for Class 2 and 3 Construction, Section III, Division 11/98EN-454-1Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNSN08925 and N08926) Wrought Fittings for Class 2 and 3 Construction, Section III, Division 110/98EN-455-1Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNSN08925 and N08926) Forged Flanges and Fittings for Class 2 and 3, Section III, Division 110/98EN-464Laser Welding of Lap Joints, Section III, Division 1, Classes 2and 3 Construction10/98EN-469-1Martensitic Stainless Steel for Class 1, 2, and 3 Components,Section III, Division 110/98EN-493Alternative Radiographic Acceptance Criteria for Vessels Usedas Shipping Casks, Section III, Division 1, Class 16/98E
a. Table 1, Acceptable Section III Code Cases, lists Code Cases that are acceptable to the NRC for application in the design and construction of light-water-cooled nuclear power plants.
CODE CASENUMBERTABLE 1ACCEPTABLE SECTION III CODE CASESSUPPLEMENT/EDITION 7N-505Alternative Rules for the Examination of Butt Welds Used asClosure Welds for Electrical Penetration Assemblies in Containment Structures, Section III, Division 112/95EN-511Design Temperature for Atmospheric and 0-15 psi StorageTanks, Section III, Division 14/92EN-520-1Alternative Rules for Renewal of N-type Certificates for PlantsNot in Active Construction, Section III, Division 110/95EN-525Design Stress Intensities and Yield Strength Values for UNSN06690 With a Minimum Specified Yield Strength of 30 ksi, Class 1 Components, Section III, Division 16/98EN-539UNS N08367 in Class 2 and 3 Valves, Section III, Division 112/95EN-548Air Cooling of SA-182 Grades F304, F304L, F316, F316LForgings Instead of Liquid Quenching After Solution Heat Treatment, Class 1, 2, and 3, Section III, Division 14/95EN-550Alternative Rules for Examination of Welds in InstrumentTubing, Class 1 and 2, Section III, Division 11/98EN-558Stamping of Class 2 Vessels Fabricated to Subsection NB,Section III, Division 16/95EN-564-2UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction,Section III, Division 18/98EN-570Alternative Rules for Linear Piping and Linear StandardSupports for Class 1, 2, 3, and MC, Section III, Division 16/95EN-572Use of SB-425 (UNS N08825) Bar and Rod for Class 1Construction, Section III, Division 17/95EN-579Use of Nonstandard Nuts, Class 1, 2, and 3, MC, CSComponents and Supports Construction, Section III, Division 110/95EN-580-1Use of Alloy 600 With Columbium Added, Section III, Division 11/98EN-594Repairs to P-4 and P-5A Materials for Pumps and ValvesWithout Postweld Heat Treatment, Section III, Division 112/95EN-596Use of Alternative Reference Specimens, Section III, Division 112/95EN-607Guidance on Implementation of NS Certificate of Accreditation,Section III, Division 15/98EN-608Applicable Code Edition and Addenda, NCA-1140(a)(2),Section III, Division 11/98E
 
CODE CASENUMBERTABLE 1ACCEPTABLE SECTION III CODE CASESSUPPLEMENT/EDITION 8N-610Alternative Reference Stress Intensity Factor (K
b. Table 2, Conditionally Acceptable Section III Code Cases, lists Code Cases that are acceptable as long as they are used with the identified conditions (i.e., the Code Case is generally acceptable;  
1R) Curve forClass Components, Section III, Division 12/98EN-611Use of Stress Limits as an Alternate to Pressure LimitsSubsection NC/ND-3500, Section III, Division 12/98EN-620Rules for Class 1 Type M Pumps, Section III, Division 14/98EN-621Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800F,Section III, Division 14/98EN-625Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800F,Section III, Division 15/98EN-631Use of Fracture Toughness Test Data to Establish ReferenceTemperature for Pressure Retaining Materials Other Than Bolting for Class 1 Vessels, Section III, Division 16/98EN-632Use of ASTM A 572, Grades 50 and 65 for StructuralAttachments to Class CC Containment Liners, Section III,
however, the NRC has determined that requirements in the Code Case, which are alternative requirements to the BPV Code, must be supplemented to provide an acceptable level of quality and safety).
Division 27/98EN-635Use of 22Cr-5Ni-3Mo-N (Alloy UNS S31803) Forgings, Plate,Bar, Welded and Seamless Pipe, and/or Tube, Fittings, and Fusion Welded Pipe With Addition of Filler Metal, Classes 2 and 3, Section III, Division 16/98EN-636Use of 18Cr-13Ni-3Mo (Alloy UNS S31703), 19Cr-15Ni-4Mo(Alloy UNS S31725), and 18.5Cr-15.5Ni-4.5Mo-N (Alloy UNS
 
S31726) Forgings, Seamless Tubing, Plate, Welded Tubing, Welded and Seamless Pipe, Welded Pipe With Addition of Filler Metal and Fittings, Classes 2 and 3, Section III,
c. Table 3, Annulled Unconditionally Approved Section III Code Cases, lists Code Cases that have been annulled by ASME.
Division 16/98EN-637Use of 44Fe-25Ni-21Cr-Mo (Alloy UNS N08904) Plate, Bar,Fittings, Welded Pipe, and Welded Tube, Classes 2 and 3, Section III, Division 16/98EN-642Alternative Rules for Progressive Liquid PenetrantExamination of Groove Welds In P-No. 8 Materials 3/16 in. (5 mm) Thick and Less Made by Autogenous Machine or Automatic Welding, Section III, Division 19/98EN-644Weld Procedure Qualification for Procedures Exempt FromPWHT in Class 1, 2, and 3 Construction, Section III, Division 110/98EN-646Alternative Stress Intensification Factors for CircumferentialFillet Welded or Socket Welded Joints for Class 2 or 3 Piping, Section III, Division 111/98E
 
92. CONDITIONALLY ACCEPTABLE SECTION III CODE CASESThe Code Cases listed in Table 2 below are acceptable to the NRC for applicationin the design and construction of components and their supports for water-cooled nuclear power plants within the limitations indicated by the NRC.  Unless otherwise stated, limitations indicated by the NRC are in addition to the conditions specified in the Code Case.  The ASME issues Section III Code Cases quarterly in supplements to a specific edition; i.e., a new edition of Section III is published every three years, and supplements are published quarterly.  Hence, there are 12 supplements to each edition.  Column 3 of the table lists the supplement and edition in which each Code Case was published (e.g.,
d. Table 4, Annulled Conditionally Acceptable Section III Code Cases, lists Code Cases that the NRC
7/95E means Code Case Supplement 7 to the 1995 Edition).TABLE 2 - CONDITIONALLY ACCEPTABLE SECTION III CODE CASESCODE CASENUMBERTABLE 2, CONDITIONALLY ACCEPTABLE CODE CASESSUPPLEMENT/EDITIONTITLE / CONDITIONN-62-7Internal and External Valve Items, Section III, Division 1,Classes 1, 2, and 38/98EThe Code requires that Class 1 and Class 2 valvemanufacturers meet the provisions of NCA-4000, "QualityAssurance.
found to be acceptable as long as the licensee used them with the identified conditions; however, they were subsequently annulled by ASME.
 
e. Table 5, Section III Code Cases That Have Been Superseded by Revised Code Cases on or after July 1, 1974, lists Code Cases that have been superseded through revision.
 
2 ASME Section III, Division 2 Code Cases are addressed in RG 1.136.  The NRC did not review Code Cases that pertain to
 
Section III, Division 3 and Division 5.
 
RG 1.84, Rev. 39, Page 7
1. Acceptable Section III Code Cases
 
The NRC finds the Code Cases listed in Table 1 to be acceptable for application in the design and construction of components and their supports for water-cooled nuclear power plants. RG 1.193 lists the ASME Code Cases that the NRC determined to be unacceptable. ASME publishes the Code Cases quarterly in supplements to each edition. To assist users, new and revised Code Cases are shaded in grey to distinguish them from those approved in previous versions of this guide. For Code Cases previously listed in this guide, the third column of Table 1 lists the dates of ASME approvals. For new or revised Code Cases, the third column of Table 1 lists the supplement and edition in which each Code Case was published (e.g., 5/17E means Supplement 5 to the 2017 Edition of the ASME BPV Code).
 
Table 1.  Acceptable Section III Code Cases
 
CODE CASE
NUMBER
TABLE 1 ACCEPTABLE SECTION III CODE CASES
DATE OR
SUPPLEMENT/  
EDITION
N-4-13 Special Type 403 Modified Forgings or Bars, Section III, Division 1, Class 1 and CS
2/12/08 N-60-6 Material for Core Support Structures, Section III, Division I
12/6/11 N-131-1
(1759-1)  
Material for Internal Pressure Retaining Items for Pressure Relief Valves, Section III, Division 1, Class 1, 2, and 3  
2/3/03 N-133-3 Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 3
2/3/03 N-154-1 Projection Resistance Welding of Valve Seats, Section III, Division 1, Classes 1, 2, and 3
2/3/03 N-205 Use of Ductile Iron SA-395, Section III, Division 1, Class 3
2/25/02 N-249-17 Additional Materials for Subsection NF, Classes 1, 2, 3, and MC Supports Fabricated without Welding, Section III, Division 1  
0/19E
N-284-4 Metal Containment Shell Buckling Design Methods, Class MC, TC, and SC
Construction, Section III, Divisions 1 and 3
10/8/12 N-315 Repair of Bellows, Section III, Division 1
2/3/03 N-319-3 Alternate Procedure for Evaluation of Stresses in Butt Welding Elbows in Class 1 Piping, Section III, Division 1
2/3/03 N-351 Use of Subsize Charpy V-Notch Specimens, Section III, Division 1  
1/17/00
N-369 Resistance Welding of Bellows, Section III, Division 1
5/9/03 N-373-3 Alternative PWHT Time at Temperature for P-No. 5A or P-No. 5B Group 1 Material, Classes 1, 2, and 3
10/8/04 N-405-1 Socket Welds, Section III, Division 1
2/20/04 N-452 Specialized Subcontracted Welding Process (Electron Beam Welding),  
Section III, Division 1
5/9/03 N-453-3 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) for Class 2 and 3 Construction, Section III, Division 1  
8/14/01 N-454-1 Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNS N08925 and N08926) Wrought Fittings for Class 2 and 3 Construction, Section III,  
Division 1
6/17/03
 
RG 1.84, Rev. 39, Page 8 CODE CASE
NUMBER
TABLE 1 ACCEPTABLE SECTION III CODE CASES
DATE OR
SUPPLEMENT/  
EDITION
N-455-1 Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNS N08925 and N08926) Forged Flanges and Fittings for Class 2 and 3, Section III, Division 1
6/17/03 N-469-1 Martensitic Stainless Steel for Class 1, 2, and 3 Components, Section III,  
Division 1
2/3/03 N-500-4 Alternative Rules for Standard Supports for Classes 1, 2, 3 and MC,  
Section III, Division 1
10/14/11 N-505 Alternative Rules for the Examination of Butt Welds Used as Closure Welds for Electrical Penetration Assemblies in Containment Structures, Section III,  
Division 1  
5/4/04 N-511 Design Temperature for Atmospheric and 0-15 psi Storage Tanks, Section III,  
Division 1
5/4/04 N-520-6 Alternative Rules for Renewal of Active or Expired N-Type Certificates for Plants Not in Active Construction, Section III, Division 1  
12/11/12 N-525 Design Stress Intensities and Yield Strength Values for UNS N06690 with a Minimum Specified Yield Strength of 30 ksi, Class 1 Components, Section III,  
Division 1
7/23/02 N-539-1 UNS N08367 in Class 2 and 3 Valves, Section III, Division 1
0/17E
N-548 Air Cooling of SA-182 Grades F304, F304L, F316, F316L Forgings Instead of Liquid Quenching After Solution Heat Treatment, Class 1, 2, and 3, Section III,  
Division 1  
9/7/01 N-564-2 UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction, Section III,  
Division 1
2/3/03 N-570-2 Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1, 2, 3, and MC, Section III, Division 1
9/9/08 N-579 Use of Nonstandard Nuts, Class 1, 2, and 3, MC, CS Components and Supports Construction, Section III, Division 1
2/3/03 N-580-2 Use of Alloy 600 with Columbium Added, Section III, Division 1
1/4/08 N-594-1 Repairs to P-4 and P-5A Castings without Postweld Heat Treatment Class 1,
2, and 3 Construction, Section III, Division 1
10/14/11
 
N-607 Guidance on Implementation of NS Certificate of Accreditation, Section III,  
Division 1
5/4/04 N-610
Alternative Reference Stress Intensity Factor (K1R) Curve for Class Components, Section III, Division 1
5/4/04 N-620
Rules for Class 1 Type M Pumps, Section III, Division 1
5/4/04 N-621-1 Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800&deg;F, Section III,  
Division 1
10/8/04 N-625-1 Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800&deg;F, Section III,  
Division 1
2/20/04 N-631 Use of Fracture Toughness Test Data to Establish Reference Temperature for Pressure Retaining Materials Other Than Bolting for Class 1 Vessels, Section III, Division 1
7/23/02
 
RG 1.84, Rev. 39, Page 9 CODE CASE
NUMBER
TABLE 1 ACCEPTABLE SECTION III CODE CASES
DATE OR
SUPPLEMENT/  
EDITION
N-635-1 Use of 22Cr-5Ni-3Mo-N (Alloy UNS S31803) Forgings, Plate, Bar, Welded and Seamless Pipe, and/or Tube, Fittings, and Fusion Welded Pipe with Addition of Filler Metal, Classes 1, 2 and 3, Section III, Division 1
2/14/03 N-636 Use of 18Cr-13Ni-3Mo (Alloy UNS S31703), 19Cr-15Ni-4Mo (Alloy UNS  
S31725), and 18.5Cr-15.5Ni-4.5Mo-N (Alloy UNS S31726) Forgings, Seamless Tubing, Plate, Welded Tubing, Welded and Seamless Pipe, Welded Pipe with Addition of Filler Metal and Fittings, Classes 2 and 3, Section III,  
Division 1
7/23/02 N-637-1 Use of 44Fe-25Ni-21Cr-Mo (Alloy UNS N08904) Plate, Bar, Fittings, Welded Pipe, and Welded Tube, Classes 2 and 3, Section III, Division 1
9/20/10
N-642 Alternative Rules for Progressive Liquid Penetrant Examination of Groove Welds In P-No. 8 Materials 3/16 in. (5 mm) Thick and Less Made by Autogenous Machine or Automatic Welding, Section III, Division 1
2/3/03 N-644-1 Weld Procedure Qualification for Procedures Exempt From PWHT 
in Classes 1, 2, and 3 Construction, Section III, Division 1
3/28/01 N-650
Use of SA-537, Class 2 Plate Material in Non-pressure Boundary Application Service 700&deg;F to 850&deg;F, Class 1 or CS, Section III, Division 1
2/20/04 N-655-2 Use of SA-738, Grade B, for Metal Containment Vessels, Class MC, Section III,
Division 1
6/6/10
N-692-1 Use of Standard Welding Procedures, Section III, Division 1
6/15E
N-698 Design Stress Intensities and Yield Strength for UNS N06690 with a Minimum Specified Yield Strength of 35 ksi (240 MPa), Class 1 Components, Section III,  
Division 1
11/18/03 N-699 Use of Titanium Grade 2 (UNS R50400) Tube and Bar, and Grade 1 (UNS R50250) Plate and Sheet for Class 1 Construction, Section III,  
Division 1
1/5/06 N-703 Use of Strain Hardened Austenitic Material at Lower Design Stress Values for Class 1 Valves, Section III, Division 1
5/4/04 N-708
 
Use of JIS G-4303, Grades SUS304, SUS304L, SUS316, and SUS316L,  
Section III, Division 1  
9/21/07 N-710
Use of Zirconium Alloy UNS R60702, Bars, Forgings, Plate, Seamless and Welded Fittings, Seamless and Welding Tubing, and Seamless and Welded Pipe, for Class 3 Construction, Section III, Division 1  
5/4/04 N-721-1 Alternative Rules for Linear Piping Supports, Section III, Division 1
5/17E
N-725 Design Stress Values for UNS N06690 with Minimum Specified Yield Strength of 35 ksi (240 MPa), Classes 2 and 3 Components, Section III, Division 1
1/12/05 N-727 Dissimilar Welding Using Continuous Drive Friction Welding for Reactor Vessel CRDM/CEDM Nozzle to Flange/Adapter Welds, Classes 1, Section III,
Division 1
2/24/06 N-736 Use UNS S32050 Welded and Seamless Pipe and Tubing, Forgings, and Plates Conforming to SA-249/SA-249M, SA-479/SA-479M, and SA-240/SA-240M,
and Grade CK35MN Castings Conforming to ASTM A 743-03 for Construction of Class 1, 2, and 3 Components, Section III, Division 1
1/5/06
 
RG 1.84, Rev. 39, Page 10
CODE CASE
NUMBER
TABLE 1 ACCEPTABLE SECTION III CODE CASES
DATE OR
SUPPLEMENT/
EDITION
N-738 NDE of Full Penetration Butt Welds in Class 2 Supports, Section III,
Division 1
7/1/05 N-741 Use of 22Cr-5Ni-3Mo-N (Alloy UNS S32205 Austenitic/ferritic Duplex Stainless Steel) Forging, Plate, Welded and Seamless Pipe Tubing, and Fittings to SA-240, SA-0789, A 790-04a, SA-815, Classes 2 and 3, Section III,
Division 1
10/11/05 N-746 Use of 46Fe-24Ni-21Cr-6Mo-Cu-N (UNS N08367) Bolting Materials for Class 2 and 3 Components, Section III, Division 1
1/5/06 N-756 Alternative Rules for Acceptability for Class 1 Valves, NPS (DN 25) and Smaller with Nonwelded End connections Other Than Flanges, Section III,
Division 1
1/21/07 N-759-2 Alternative Rules for Determining Allowable External Pressure and Comprehensive Stress for Cylinders, Cones, Spheres, and Formed Heads, Section III, Division 1
1/4/08 N-760-2 Welding of Valve Plugs to Valve Stem Retainers, Classes 1, 2, and 3, Section III, Division 1
10/10/08 N-767 Use of 21 Cr-6Ni-9Mn (Alloy UNS S21904) Grade GXM-11 (Conforming to SA-182/SA-182M and SA-336/SA-336M), Grade TPXM-11 (Conforming to SA-312/SA-312M) and Type XM-11 (Conforming to SA-666) Material, for Class-1 Construction, Section III, Division 1
1/4/08 N-774 Use of 13Cr-4Ni (Alloy UNS S41500) Grade F6NM Forgings Weighing in Excess of 10,000 lb (4,540 kg) and Otherwise Conforming to the Requirements of SA-336/SA-336M for Class 1, 2, and 3 Construction, Section III, Division 1
9/3/08 N-777 Calibration of Cv Impact Test Machines, Section III, Divisions 1, 2, and 3
10/10/08 N-782 Use of Editions, Addenda, and Cases, Section III, Division 1
1/30/09 N-785 Use of SA-479/SA-479M, UNS S41500 for Class 1 Welded Construction, Section III, Division 1
10/12/09 N-801-3 Rules for Repair of N-Stamped Class 1, 2, and 3 Components, Section III,
Division 1
1/17E
N-815 Use of SA-358/SA-358M Grades Fabricated as Class 3 or Class 4 Welded Pipe, Class CS Core Support Construction, Section III, Division 1
12/6/11 N-816 Use of Temper Bead Weld Repair Rules Adopted in 2010 Edition and Earlier Editions, Section III, Division 1
12/6/11 N-817 Use of Die Forgings, SB-247, UNS A96061, Class T6, with Thickness
4.000 in. Material, Class 2 Construction (1992 Edition or Later), Section III,
Division 1
12/6/11 N-819 Use of Die Forgings, SB-247, UNS A96061, Class T6, with Thickness
4.000 in. Material, Class 2 Construction (1989 Edition with the 1991 Addenda or Earlier), Section III, Division 1
12/6/11 N-822-4 Application of the ASME Certification Mark, Section III, Divisions 1, 2, 3, and
5
7/15E
N-834 ASTM A988/A988M-11 UNS S31603, Subsection NB, Class 1 Components, Section III, Division 1
10/22/13 N-836 Heat Exchanger Tube Mechanical Plugging, Class 1, Section III, Division 1
10/22/13
 
RG 1.84, Rev. 39, Page 11 CODE CASE
NUMBER
TABLE 1 ACCEPTABLE SECTION III CODE CASES
DATE OR
SUPPLEMENT/
EDITION
N-841 Exemptions to Mandatory Post Weld Heat Treatment (PWHT) of SA-738 Grade B for Class MC Applications, Section III, Division 1
1/6/14 N-844 Alternatives to the Requirements of NB-4250(c) Section III, Division 1
2/9/14 N-855 SB-148 C95800 Valves for Class 3 Construction, Section III, Division 1
2/15E
N-856 SA-494 Grade CW-12MW (UNS N30002) Nickel Alloy Castings for Construction of NPS 21/2 and Smaller Flanged Valves for Class 3 Construction, Section III, Division 1
2/15E
N-859 Construction of ASME B16.9 Wrought Buttwelding Fittings and ASME B16.11 Forged Fittings Made From SB-366 UNS N04400 Material for Section III,
Class 3 Construction, Section III, Division 1
5/15E
N-863-1 Postweld Heat Treatment (PWHT) of Valve Seal Welds for P4 and P5A
Materials, Section III, Division 1
1/17E
N-866 Alternative Materials for Construction of Section III, Class 2 Vessels, Section III, Division 1
0/17E
N-870-1 Rules for the Elimination of External Surface Defects on Class 1, 2, and 3 Piping, Pumps, or Valves After Component Stamping and Prior to Completion of the N-3 Data Report, Section III, Division 1
4/17E
N-879 Use of Micro-Alloyed Carbon Steel Bar in Patented Mechanical Joints and Fittings, Classes 1, 2, and 3, Section III, Division 1
1/17E
N-884 Procedure to Determine Strain Rate for Use With the Environmental Fatigue Design Curve Method and the Environmental Fatigue Correction Factor, Fen, Method as Part of an Environmental Fatigue Evaluation for Components Analyzed per the NB-3200 Rules, Section III, Division 1
0/19E
N-887 Alternatives to the Requirements of NB-4424.2(a), Figure NB-4250-2, and Figure NB-4250-3, Section III, Division 1
6/17E (with errata issued in
3/19E)
N-891 Alternative Requirements to Appendix XXVI, XXVI-2400, XXVI-4130, and XXVI-4131 for Inspection and Repair of Indentations for Polyethylene Pipe and Piping Components, Section III, Division 1
0/19E
 
RG 1.84, Rev. 39, Page 12
2. Conditionally Acceptable Section III Code Cases
 
The NRC finds the Code Cases listed in Table 2 to be acceptable for application in the design and construction of components and their supports for water-cooled nuclear power plants within the limitations indicated by the NRC. Unless otherwise stated, limitations indicated by the NRC are in addition to the conditions specified in the Code Case. ASME publishes Code Cases quarterly in supplements to each edition. To assist users, new and revised Code Cases are shaded in grey to distinguish them from those approved in previous versions of this guide. For Code Cases previously listed in this guide, the third column of Table 1 lists the date of ASME approval. For new or revised Code Cases, the third column of Table 1 lists the supplement and edition in which each Code Case was published (e.g., 5/17E means Supplement 5 to the 2017 Edition of the ASME BPV Code).
 
Table 2.  Conditionally Acceptable Section III Code Cases
 
CODE CASE
NUMBER
TABLE 2 CONDITIONALLY ACCEPTABLE SECTION III CODE CASES
TITLE/CONDITION
DATE OR
SUPPLEMENT/
EDITION
N-62-7 Internal and External Valve Items, Section III, Division 1, Classes 1, 2, and 3 The Code requires that Class 1 and Class 2 valve manufacturers to meet the provisions of Section III, Article NCA-4000, Quality Assurance. Class 3 valve manufacturers must also meet the provisions of Article NCA-4000
because all Code Class valve items are subject to the licensees 10 CFR Part 50,
Appendix B, approved quality assurance program.
 
2/3/03 N-71-20
Additional Materials for Subsection NF, Class 1, 2, 3, and MC Supports Fabricated by Welding, Section III, Division 1
(1)  The maximum measured ultimate tensile strength (UTS) of the component support material must not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking.
 
(2)    In the last sentence of Paragraph 5.2 of Code Case N-71-20, the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for a longer period of time must be consistent with Paragraph 5.3.2.3, Alternative Atmosphere Exposure Time Periods Established by Test, of the AWS D1.1 Code.
 
(3)    Paragraph 16.2.2 of Code Case N-71-20 is replaced with the following:
When not exempted by 16.2.1 above, the post weld heat treatment must be performed in accordance with NF-4622 except that ASTM A-710 Grade A Material must be at least 1000&deg;F (540&deg;C) and must not exceed 1150&deg;F
(620&deg;C) for Class 1 and 2 material and 1175&deg;F (640&deg;C) for Class 3 material.
 
(4)    The new holding time at temperature for weld thickness (nominal) must be
30 minutes for welds 0.5 inch or less; 1 hour per inch of thickness for welds over 0.5 inch to 5 inches; and for thicknesses over 5 inches, 5 hours plus 15 minutes for each additional inch over 5 inches.
 
(5)    The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, 2 and 3 component supports.
 
(6)  When welding P-number materials listed in the Code Case, the corresponding S-number welding requirements apply.
 
6/15E
 
RG 1.84, Rev. 39, Page 13 CODE CASE
NUMBER
TABLE 2 CONDITIONALLY ACCEPTABLE SECTION III CODE CASES
TITLE/CONDITION
DATE OR
SUPPLEMENT/
EDITION
N-155-3 Fiberglass Reinforced Thermosetting Resin Pipe, Section III, Division 1
(1)
The design temperature for spray pond piping must be 100&deg;C (212&deg;F).
(2)
The allowable design stress must be the value obtained from the minimum hydrostatic design basis in Table 3611-1 of Code Case N-155-2 (Procedure A or B) or the value determined as one-sixth of the stress obtained from a short-time burst test for the pipe being qualified, whichever is lower. The short-time burst strength must be determined by bursting the pipe (ASTM D-1599-74) using free-end mounting after it has been exposed to 1x105 pressure cycles from atmospheric to design pressure.
 
(3)
The value of K in Equation 9 of Paragraph 3652 must be limited to 1.2 unless it is demonstrated that, with the use of a large value of K1, the functional capability of the system will not be impaired during upset and emergency conditions.
 
(4)
RTR piping must be uninsulated or uncovered and installed under conditions that make it readily accessible for inspection.
 
(5)
Preoperational and inservice inspections must be as follows:
(a)
During the preoperational testing period, tests must be made to verify that the piping is free of vibration induced by weather conditions or water flow that could fatigue the piping prematurely.
 
(b)
Fiberglass-reinforced piping components must be inspected in accordance with ASME Code, Section XI, for Code Class 3 components. In addition, all pipe supports must be inspected.
 
(c)
Inspection frequency for piping must be increased to once annually if an exterior weather-resistant coating is not provided.
 
5/15E
N-755-4 Use of Polyethylene (PE) Class 3 Plastic Pipe, Section III, Division 1
(1)
When performing fusing procedure qualification testing in accordance with paragraphs -2420 and -4330 of this Code Case, the following essential variables must be used for butt fusion joints:
(a)
Joint Type: A change in the type of joint from that qualified, except that a square butt joint qualifies as a mitered joint.
 
(b)
Pipe Surface Alignment: A change in the pipe outside diameter (O.D.) surface misalignment of more than 10 percent of the wall thickness of the thinner member to be fused.
 
(c)
PE Material: Each lot of polyethylene source material to be used in production (as mentioned in paragraph (XXVI-2310(c)).
(d)
Wall Thickness: Each thickness to be fused in production (as mentioned in paragraph (XXVI-2310(c)). 
(e)
Diameter: Each diameter to be fused in production (as mentioned in paragraph (XXVI-2310(c)).
(f)
Cross-sectional Area: Each combination of thickness and diameter (as mentioned in paragraph (XXVI-2310(c)).
(g)
Position: Maximum machine carriage slope when greater than 20
degrees from horizontal (as mentioned in paragraph (XXVI-
4321(c)).
(h)
Heater Surface Temperature: A change in the heater surface
1/17E
 
RG 1.84, Rev. 39, Page 14 CODE CASE
NUMBER
TABLE 2 CONDITIONALLY ACCEPTABLE SECTION III CODE CASES
TITLE/CONDITION
DATE OR
SUPPLEMENT/
EDITION
temperature to a value beyond the range tested (as mentioned in paragraph (XXVI-2321).
(i)
Ambient Temperature: A change in ambient temperature to less than 50F (10C) or greater than 125F (52C) (as mentioned in paragraph (XXVI-4412(b)).
(j)
Interfacial Pressure: A change in interfacial pressure to a value beyond the range tested (as mentioned in paragraph (XXVI-2321).
(k)
Decrease in Melt Bead Width: A decrease in melt bead size from that qualified.
 
(l)
Increase in Heater Removal Time: An increase in heater plate removal time from that qualified.
 
(m)
Decrease in Cool-down Time: A decrease in the cooling time at pressure from that qualified.
 
(n)
Fusing Machine Carriage Model: A change in the fusing machine carriage model from that tested (as mentioned in paragraph (XXVI-
2310(d)).
(2)
When performing procedure qualification for High Speed Tensile Impact testing of butt fusion joints in accordance with XXVI-2300 or XXVI-
4330, if the specimen breaks away from the fusion zone it must be retested. When performing fusing operator qualification bend tests of butt fusion joints in accordance with XXVI-4342, guided side bend testing must be used for all thicknesses greater than 1.25 inches.
 
N-757-1 Alternative Rules for Acceptability for Class 2 and 3 Valves (DN 25) and Smaller with Welded and Nonwelded End Connections Other Than Flanges, Section III, Division 1 The design provisions of ASME Section III, Division 1, Appendix XIII, shall not be used for Class 3 valves.
 
9/21/07 N-779 Alternative Rules for Simplified Elastic-Plastic Analysis Class 1, Section III,
Division 1 Acceptable for use with code editions Summer 1979 addenda and later.
 
1/26/09 N-852 Application of the ASME NPT Stamp, Section III, Divisions 1, 2, 3, and 5 Licensees may use the NPT Code Symbol Stamp with the letters arranged horizontally as specified in ASME BPV Code Case N-852 for the service life of a component that had the NPT Code Symbol Stamp applied during the time period from January 1, 2005 through December 31, 2015.
 
0/15E
N-883 Construction of Items Prior to the Establishment of a Section III, Division 1 Owner, Section III, Division 1 This Code Case may only be used for the construction of items by a holder of a construction permit, operating license, or combined license under 10 CFR Part
50 or Part 52. This Code Case may not be used by a holder of a manufacturing license or standard design approval or by a design certification applicant.
 
5/17E
N-886 Use of Polyethylene Pipe for Class 3, Section III, Division 1 For above ground applications, licensees must ensure the plant fire protection program addresses any HDPE consistent with the requirements of 10 CFR
50.48.
 
6/17E
 
RG 1.84, Rev. 39, Page 15
3. Annulled Unconditionally Approved Section III Code Cases
 
The NRC had previously approved the Code Cases listed in Table 3 unconditionally, but they have since been annulled by ASME. To assist users, new annulled Code Cases are shaded in grey to distinguish them from those listed in previous versions of this guide.
 
Table 3.  Annulled Unconditionally Approved Section III Code Cases
 
CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-1-7
(1332-7)
Requirements for Steel Forgings, Section III, Division 1
7/1/82 N-2
(1334-3)
Requirements for Corrosion-Resisting Steel Bars and Shapes, Section III
1/1/82 N-3-10
(1335-10)
Requirements for Bolting Materials, Section III
9/16/84 N-5-1 Nickel Chromium Age Hardenable Alloys (Alloy X750), Section III,
Division 1, Classes 1, 2, 3, MC, and CS
12/13/85 N-6
(1345-2)
Requirements for Nickel-Molybdenum-Chromium-Iron Alloys, Section III
3/1/79 N-7-1
 
High Yield Strength Steel, Class 1, Section III, Division 1
2/22/05 N-9-4
(1395-4)
SA-508, Class 2 Forgings with Modified Manganese Content, Section III
7/1/82 N-10
(1407-3)
Time of Examination for Classes, 1, 2, and 3, Section III Vessels
9/17/87 N-15
(1456-2)
Substitution of Ultrasonic Examination for Progressive Penetrant or Magnetic Particle Examination of Partial Penetration and Oblique Nozzle Attachment Welds, Section III
3/1/79 N-17
(1474-1)
Integrally Finned Tubes for Section III
1/21/91 N-20-4 SB-163, Cold Worked UNS N08800; and SB-163 UNS N06600,
UNS N06690, and UNS N08800 to Supplementary Requirements S2 of SB-163, Section III, Division 1, Class 1
9/18/01 N-22
(1498-1)
SA-508-Class 2 and 3, Minimum Tempering Temperature, Section III
7/1/82 N-24
(1516-2)
Welding of Seats or Minor Internal Permanent Attachments in Valves for Section III Applications
1/1/80
N-30-1
(1539-1)
Metal Bellows and Metal Diaphragm Stem Sealed Valves, Section III,
Division 1, Classes 1, 2, and 3
1/1/81 N-32-3
(1541-3)
Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III, Division 1 Construction
7/1/79 N-33
(1542-1)
Type 403 Forgings or Bars for Bolting Material, Section III
1/21/85 N-35-1
(1552-1)
Design by Analysis of Section III, Class 1 Valves
7/1/79
 
RG 1.84, Rev. 39, Page 16 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-37-3
(1557-3)
Steel Products Refined by Secondary Remelting, Section III and VIII,
Division 1 and 2
7/1/82 N-41
(1571)
Additional Material for SA-234 Carbon Steel Fittings, Section III
1/21/85 N-43
(1578)
SB-167 Nickel-Chromium-Iron (Alloy 600) Pipe or Tube, Section III
7/1/82 N-46
(1588)
Electro-Etching of Section III Code Symbols
3/19/82 N-48-2 Fabrication and Installation of Elevated Temperature Components, Section III, Division 1
7/1/96 N-49-4 Examination of Elevated Temperature Nuclear Components, Section III,
Class 1
7/1/96 N-50-1 Testing of Elevated Temperature Components, Section III, Division 1, Class 1
7/1/96 N-51-2 Protection against Overpressure of Elevated Temperature Components, Section III, Division 1, Class 1
7/1/96 N-55-1
(1609)
Inertia and Continuous Drive Friction Welding, Section III, Division 1
4/5/87 N-56
(1612)
Use of Type 308 Stainless Steel Rod and Bar for Section III, Class 1, 2, 3, and CS Construction
7/1/78 N-61
(1620)
Stress Category for Partial Penetration Welded Penetrations, Section III,
Class Construction
1/8/82 N-65-1
(1626-1)
Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings, Section I and III
1/21/85 N-66-1
(1630-1)
External Pressure Charts for High Yield Strength Carbon Steels and Low Alloy Steels (Yield Strength above 38 ksi to 60 ksi Inclusive) For Section III, Class 1, 2, 3, and MC
12/5/87 N-68
(1634-2)
Use of SB-359 for Section III, Division, 1, Class 3 Construction
7/1/78 N-77
(1660)
Overpressure Protection under Emergency Operating Conditions for Section III, Class 1
7/1/77 N-81
(1665)
Pressure-Temperature Ratings for Class 1 Valves Made from 5 Cr-1/2 Mo, Section III
7/1/78 N-82
(1677)
Clarification of Flange Design Loads, Section III, Class 1, 2, and 3
3/1/79 N-84
(1681-1)
Organizations Accepting Overall Responsibility for Section III
Construction
3/1/79 N-90
(1692)
Rules for Design of Welded Class 1 Pumps
7/1/78 N-94
(1700)
Determination of Capacities of Liquid Relief Valves, Section III, Division 1, Class 1, 2, and 3
3/19/82 N-95-2
(1701-2)
Determination of Capacities of Vacuum Relief Valves, Section III,
Division 1, Classes 2, 3, and MC and Division 2 Concrete Containments
7/9/82
 
RG 1.84, Rev. 39, Page 17 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-96-1
(1702-1)
Flanged Valves Larger than 24 Inches for Section III, Division 1, Class 1,
2, and 3 Construction
1/1/80
N-101
(1712)
Nameplates and Stamping for Section III, Division 1, Class 1, 2, 3 and MC
Construction as Referenced in NA-8300
3/1/79 N-102-2 Postweld Heat Treatment of P-1 Material, Section III, Class MC
6/30/84 N-107-1
(1722-1)
Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division 1
1/8/82 N-108
(1724)
Deviation from the Specified Silicon Ranges in ASME Material Specifications, Section III, Division 1, and VIII, Division 1 and 2
7/1/78 N-109
(1726)
Refinement of Low Alloy Steel Heat Affected Zone under Overlay Cladding, Section III, Division 1, Class 1 Components
3/1/79 N-111
(1729)
Minimum Edge Distance-Bolting for Section III, Division 1, Class 1, 2, and
3 and MC Construction of Component Supports
3/1/79 N-114
(1732)
Hardsurfaced Valves with Inlet Connections Less Than 2-in. Nominal Pipe Size for Section III, Division 1, Class 1 and 2 Construction
1/1/79 N-115
(1733)
Evaluation of Safe Shut Down Earthquake Loadings for Section III,
Division 1, Class MC Containment Vessels
1/1/78 N-119-6 Pump Internal Items, Section III, Division 1, Class 1, 2, and 3
3/14/94 N-121
(1744)
Carbon Steel Pipe Flanges Larger than 24 in., Section III, Division 1, Class 2 and 3 Construction
3/1/79 N-122-2 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 1 Piping, Section III, Division 1
8/20/09 N-123
(1746)
Leak Testing of Seal Welds, Section III, Division 1, Class 1, 2, and 3 Construction
3/1/79 N-124
(1747)
Requirements for Martensitic Stainless Forgings with 13% Chromium and
4% Nickel, Section III, Division 1
7/13/87 N-125
(1748)
Low Carbon Austenitic Stainless Steel Pipe Welded with Filler Metal, Section III, Division 1, Construction
7/1/78 N-126
(1754)
Hard Surfacing by the Spray-Fuse Method, Section III, Class 1, 2, and 3 Construction
7/1/88 N-127
(1755-1)
Alternative Rules for Examination of Welds in Piping, Section III, Class 1 and 2 Construction
2/20/92 N-139 Testing of Electroslag Wire and Flux for Class 1, 2, 3, MC, and CS Construction, Section III, Division 1
1/1/79 N-140
(1772)
Use of SA-453 Bolts in Service below 800&deg;F without Stress Rupture Tests, Section III, Division 1
12/31/85 N-142-1
(1774-1)
Minimum Wall Thickness for Class 2 and 3 Valves, Section III, Division 1
1/1/80
N-147
(1781)
Use of Modified SA-487 Grade CA6NM, Section III, Division 1, Class 1, 2, 3, MC, or CS
7/1/78 N-148
(1782)
Use of Copper-Nickel Alloy 962 for Castings, Section III, Division 1, Class 3 Construction
6/30/83
 
RG 1.84, Rev. 39, Page 18 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-156
(1793)
Structural Steel Rolled Shapes, Section III, Division I, Class 2, 3, and MC
2/14/86 N-157
(1794)
Use of Seamless Al-Br, Alloy CDA 614 Pipe, Section III, Division 1, Class 3
1/7/83 N-158
(1795)
Examination of Weld Repairs in Forgings, Section III, Division 1, Class 1, 2, 3, MC, and CS
7/1/78 N-159
(1796)
Body Neck Thickness Determination for Valves with Inlet Connections
4-Inch Nominal Pipe Size and Smaller, Section III, Division 1, Class 1, 2, and 3
7/1/78 N-160-1 Finned Tubing for Construction, Section III, Division 1
10/14/11 N-174
(1812)
Size of Fillet Welds for Socket Welding of Piping, Section III, Division 1
1/1/81 N-176-1
(1819-1)
Use of Type XM-19 for Construction, Section III, Division 1, Class 1, 2, and 3
8/25/83 N-177
(1820)
Alternative Ultrasonic Examination Technique, Section III, Division 1
1/1/84 N-178 Use of ASTM B271, CDA 954, Alloy 9C for Class 3 Construction, Section III, Division 1
1/1/80
N-179 Openings in Valves for Section III, Division 1, Class 1, 2 and 3 Construction
7/11/80
N-180
Examination of Springs for Class 1 Component Standards Supports, Section III, Division 1
7/1/78 N-181 Steel Castings Refined by the Argon Decarburization Process, Section III,
Division 1, Construction
7/11/80
N-182 Alternate Rules for Procedure Qualification Base Material Orientation, Section III, Division 1, Class 2 and 3 Construction
7/1/81 N-183 Use of Modified SA-182 Grade F22 for Section III, Division 1, Class 1, 2 and 3 Construction
1/1/80
N-184 Roll Threading of SA-453 Bolting for Section III, Division 1, Class 1, 2, 3, or CS Construction
7/1/79 N-188-1 Use of Welded Ni-Fe-Cr-Mo-Cu (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625)
Tubing, Section III, Division 1, Class 2 and 3
8/14/96 N-189 Primary Membrane Plus Primary Bending Stress Intensity Limits for Other Than Solid Rectangular Sections for Section III, Division 1, Class MC
Construction
7/1/79 N-190
Use of SA-455 for Class 3 Components, Section III, Division 1
7/1/78 N-192-3 Use of Braided Flexible Connectors, Section III, Division 1, Class 2 and 3
1/7/15 N-193 Use of SB-61 and SB-62 Bronze for Section III, Division 1, Class 3 Flange and Socket Weld End Valves
11/21/80
N-196-1 Exemption from the Shakedown Requirements When Plastic Analysis Is Performed for Section III, Division 1, Class 1 and CS Construction
7/1/92
 
RG 1.84, Rev. 39, Page 19 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-204 Use of Modified SA-508, Class 3, and SA-541, Class 3 for Section III,
Division 1, Class 1, 2, and 3 Components
1/1/81 N-206 Use of ASTM B151-75 Copper-Nickel Alloy 706 Rod and Bar for Section III, Division 1, Class 3 Construction
6/30/83 N-207-1 Use of Modified SA-479 Type XM-19 for Section III, Division 1, Class 1, 2,
3, or CS Construction
1/21/85 N-212
(1693)
Welding Procedure Qualification of Dissimilar Metal Welds When Buttering with Alloy Weld Metal and Heat Treatment May Be Involved, Section III, Division 1, and Section IX
1/1/81 N-214-2 Use of SA-351 Grade CN7M, for Valves, Section III, Division 1
12/31/83 N-215 Integrally Finned Titanium Tubes, Section III, Division 1, Class 3 Construction
5/15/81 N-217-1 Postweld Heat Treatment of Weld Deposit Cladding on Classes 1, 2, 3, MC, and CS Items, Section III, Division 1
2/23/87 N-220
Code Effective Date for Component Supports, Section III, Division 1
7/13/81 N-223 Requirements for Stainless Steel Precipitation Hardening, Section III,
Division 1, Class MC
11/20/81 N-224-1 Use of ASTM A500 Grade B and ASTM A501 Structural Tubing for Welded Attachments for Section III, Class 2, 3, and MC
4/5/90
N-225 Certification and Identification of Material for Component Supports, Section III, Division 1
1/1/81 N-226 Temporary Attachment of Thermocouples, Section III, Division 1, Class 1, 2 and 3 Component Supports
1/1/80
N-227 Examination of Repair Welds, Section III, Class 2 and 3 Tanks
7/9/82 N-228 Alternate Rules for Sequence of Completion of Code Data Report Forms and Stamping for Section III, Class 1, 2, 3, and MC Construction
3/19/82 N-229 Alternate Rules for Fabrication Welding SB-148 Alloy CDA 954 for Section III, Division 1, Class 3 Construction
1/21/88 N-231 Alternate Methods for Leak Detection in the Attachment Welds of Leak Chase Channels, Section III, Division 2, Class CC
7/1/92 N-233 Alternate Rules for PWHT of P-No. 6, Group 4 Material for Section III,
Division 1, Class 3 Construction
9/17/87 N-237-2 Hydrostatic Testing of Internal Piping, Section III, Division 1, Classes 2 and 3
7/1/88 N-240
Hydrostatic Testing of Open Ended Piping, Section III, Division 1
7/1/97 N-241 Hydrostatic Testing of Piping, Section III, Division 1
7/1/97 N-243 Boundaries within Castings Used for Core Support Structures, Section III,
Division 1, Class CS
10/14/11 N-245 Use of ASTM B61-76 and B62-76 Copper Alloy Castings for Section III,
Division 1, Class 3 Construction
7/17/85 N-246-2 SB-169 Alloy C61400, Section III, Division 1, Class 3 Construction
7/27/95
 
RG 1.84, Rev. 39, Page 20
CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-247 Certified Design Report Summary for Component Standard Supports, Section III, Division 1, Class 1, 2, 3 and MC
4/30/93 N-248 Alternative Reference Radiographs, Section III, Division 1, Classes 1, 2, 3, MC, and CS Construction
7/1/80
N-259 Ni-Cu-Al Bolting Material SB 164 Modified, Section III, Division 1, Class 3
1/1/84 N-261 Weld Procedure Qualification for Materials with Impact Requirements for Section III, Division 1, Class 3 Construction
12/13/82 N-262 Electric Resistance Spot Welding for Structural Use in Component Supports, Section III, Division 1
7/27/91 N-265-1 Modified SA-487 Castings, Section III, Division 1, Class 1
8/14/97 N-267 Double-Wall Radiography, Section III, Division 1, Class 1 and 2
7/1/81 N-271 Simplified Method for Analyzing Flat Face Flanges with Metal to Metal Contact outside the Bolt Circle for Section III, Class 2, 3, and MC
Construction
2/14/86 N-272 Compiling Data Report Forms, Section III, Division 1
1/1/82 N-276 Welding of SA-358 Pipe, Section III, Division 1
2/14/86 N-277 Use of Type XM-19 Austenitic Stainless Steel for Section III, Division 1, Class MC Construction
9/17/80
N-280
Alternate Rules for Examination of Welds in Section III, Class 3 Storage Tanks
7/1/81 N-281 Welding Operator Performance Qualification, Section III, Division 1
7/1/81 N-282 Nameplates for Valves, Section III, Division 1, Class 1, 2, and 3 Construction
7/30/89 N-294 SB-148 Alloys 952 and 954, and SB-62 Alloy 836 Fittings, Section III,
Division 1, Class 2
7/27/95 N-295 NCA-1140, Materials, Section III, Division 1
6/30/82 N-296 Welding Material, Section III, Division 1 Construction
12/1/83 N-298 Examination of Component Supports, Section III, Division 1, Class 1, 2, 3, and MC
12/1/83 N-299-1 Use of Nickel-Chromium-Molybdenum-Columbium Alloy 625 Forgings, Section III, Division 1, Class 2 and Class 3 Components
2/23/87 N-300
Pressure-Temperature Ratings, Hydrostatic Tests, and Minimum Wall Thickness of Valves, Section III, Division 1, Class 1
12/1/83 N-302 Tack Welding, Section III, Division 1, Construction
11/28/83 N-304-4 Use of 20Cr-25Ni-6Mo (Alloy UNS N08366) Plate, Sheet, Strip, and Welded Pipe, Class 2 and 3, Section III, Division 1
1/1/03 N-309-1 Identification of Materials for Component Supports, Section III, Division 1
7/1/95 N-313 Alternative Rules for Half-Coupling Branch Connections, Section III,
Division 1, Class 2
7/1/96 N-316 Alternative Rules for Fillet Weld Dimensions for Socket Welding Fittings, Section III, Division 1, Class 1, 2, and 3
8/14/93
 
RG 1.84, Rev. 39, Page 21 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-317 ASTM A276 Bar, Section III, Division 1
7/1/82 N-318-5 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping, Section III, Division 1
8/20/09 N-320
Alternate PWHT for SA-487, Grade CA6NM, Section III, Division 1
12/31/83 N-321-1 Use of Modified SA-249, Grade TP 304, Section III, Division 1, Class 1
12/85/88 N-324 Qualification of Authorized Nuclear Inspector Supervisor (Concrete) and Authorized Nuclear Inspector (Concrete), Section III, Division 2, Classes CB and CC
7/27/95 N-328 Thermit Brazing or Welding of Nonstructural Attachments, Section III,
Division 1
9/17/87 N-329 Examination of Bar Material, Section III, Division 1, Class 1
10/14/11 N-336 Examination of Welds Inaccessible during Pressure Test, Section III,
Division 1, Class MC
6/30/83 N-337-1 Use of ASTM B 525-70 Grade II, Type II, Sintered Austenitic Stainless Steel for Classes 2, 3, and MC Component Standard Supports, Section III,
Division 1
3/14/94 N-339 Examination of Ends of Fillet Welds, Section III, Division 1, Classes 1, 2, and MC
9/17/84 N-341 Certification of Level III NDE Examiner, Section III, Divisions 1 and 2
7/1/88 N-342 Use of SA-249 and SA-312 Type 317 Stainless Steel, Section III, Division 1, Classes 1, 2, and 3
4/2/85 N-345-1 Attachment of AMS 5382 Alloy 31 Seat Rings by Friction Welding, Section III, Division 1, Classes 1, 2, and 3
3/28/01 N-346 Explosive Welding, Section III, Division 1
6/30/86 N-347 Continuous Electric Resistance Seam Welding of P-No. 8 Materials for Component Supports, Section III, Division 1
12/13/85 N-349 Pressure Testing Piping Systems, Section III, Division 1, Classes 2 and 3
12/13/85 N-352-1 Use of SA-638 Grade 660 Forgings and Bars below 700&deg;F without Stress Rupture Tests, Section III, Division 1
6/30/86 N-353 Marking of SA-354 Grade BD Bolting, Section III, Division 1
9/5/88 N-354-1 Subcontracted Service, Section III, Division 2
8/14/94 N-355 Calibration Block for Angle Beam Ultrasonic Examination of Large Fittings in Accordance with Appendix III-3410
8/9/96 N-357 Certification of Material for Component Supports, Section III, Division 1, Subsection NF
7/1/88 N-359 Weld Connection for Coaxial Cylinders, Section III, Division 1, Class 1
12/31/84 N-362-2 Pressure Testing of Containment Items, Section III, Division 1, Classes 1,
2, and MC
7/1/88 N-367 SA-372 Type V, Grade 1, Class B, Section III, Division 1
2/19/89 N-368 Pressure Testing of Pump Discharge Piping, Section III, Division 1, Classes 2 and 3
7/1/95
 
RG 1.84, Rev. 39, Page 22 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-370-2 Modified SA-705 Type XM-13 Forgings, Section III, Division 1
8/14/97 N-371-1
12Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals, Section III,
Division 1
7/18/88 N-372 SB-163 Ni-Fe-Cr-Mo-Cu Alloy 825 (UNS N08825) Tubing, Section III,
Division 1
12/31/83 N-376 Pressure Testing of Embedded Class 2 and 3 Piping, Section III, Division 1
7/30/86 N-377 Effective Throat Thickness of Partial Penetration Groove Welds, Section III, Division 1, Classes 1, 2, and 3
12/31/83 N-378 Examination of Piping Support Material, Section III, Division 1, Class 1
10/28/86 N-379-1 Bimetallic Tubing, Section III, Division 1, Class 1
7/18/91 N-384-1 Use of Prepackaged General Purpose Cement Grouts, Epoxy Grouts, and Epoxy Bonding, Section III, Division 2, Class CC
7/27/91 N-387 Certification of Level III NDE Examiner, Section III, Division 2
9/18/01 N-388 Component Support Bolting, Section III, Division 1, Classes 2, 3, and MC
2/23/87 N-391-2 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Class 1 Piping, Section III, Division 1
5/4/04 N-392-3 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Classes 2 and 3 Piping, Section III, Division 1
5/4/04 N-393 Repair Welding Structural Steel Bolted Shapes and Plates for Component Supports, Section III, Division 1
7/27/95 N-394 Restricting Lift to Achieve Reduced Relieving Capacities of Full Lift, Nozzle Type, and Flat Seated Safety and Safety Relief Valves for Compressible Fluid Applications, Section III, Division 1, Classes 2 and 3
3/2/01 N-395 Laser Welding, Section III, Division 1
9/18/01 N-403 Reassembly of Subsection NF Component and Piping Supports, Section III,
Division 1
7/1/95 N-410
Certified Relieving Capacities of Pressure Relief Valves Having Set Pressure of 3 psig up to but Not Including 15 psig Installed for Overpressure Protection of Compressible Fluid Systems, Section III,
Division 1, Classes 2 and 3
3/14/00
N-412 Alternative Rules for Witnessing the Piping System Pressure Tests of Classes 1, 2, and 3 Piping Systems, Section III, Division 1
4/15/91 N-413 Minimum Size of Fillet Welds for Subsection NF Linear Type Supports, Section III, Division 1
2/14/88 N-414 Tack Welds for Class 1, 2, 3 and MC Components and Piping Supports
2/20/92 N-418-1 Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028 and UNS N08904) Tubing, Section III, Division 1, Classes 2 and 3
7/27/95 N-420
Linear Energy Absorbing Supports for Subsection NF, Classes 1, 2, and 3 Construction
1/1/99 N-421 Brazing Using a Radiant Energy Source, Section III, Division 1
6/30/86
 
RG 1.84, Rev. 39, Page 23 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-433 Non-Threaded Fasteners for Section III, Division 1, Class 1, 2, and 3 Components and Piping Supports
12/16/95 N-438-4 UNS N08367 Material, Section III, Division 1, Class 2 and 3 Construction
7/1/98 N-439-1 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Forgings, Plate, Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction, Section III,
Division 1
9/18/01 N-440-1 Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction, Section III, Division 1
9/18/01 N-441-2 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction, Section III, Division 1
9/18/01 N-442
1977 Addendum to ANSI/ASME PTC 25.3-1976, Safety and Safety Relief Valves, Class 1, 2, 3, and MC, Section III, Division 1
3/8/92 N-443-2 High Yield Strength Cr-Mo Steel, Class 1 Components, Section III,
Division 1
1/1/01 N-451 Alternative Rules for Analysis of Piping under Seismic Loading, Class 1, Section III, Division 1
8/14/96 N-459 SA-508 Basic Oxygen-Ladle Furnace Process for Code Construction, Section III, Division 1
3/14/94 N-462 Alternative Rules for Analysis of Piping Products under Seismic Loading, Class 2 and 3 Piping Systems, Section III, Division 1
5/24/96 N-464 Laser Welding of Lap Joints, Section III, Division 1, Classes 2 and 3 Construction
5/9/03 N-466-1 Modified 9Cr-1Mo Material, Section III, Division 1, Classes 1, 2, and 3
8/14/97 N-468 Alternative Method of Earthquake Description for Class 2 and 3 Piping of Low Seismicity Sites, Section III, Division 1
1/1/92 N-470
Class MC Material Requirements [NE-2121(c)], Section III, Division 1
3/8/92 N-474-2 Design Stress Intensities and Yield Strength Values for UNS N06690 with a Minimum Specified Yield Strength of 35 ksi, Class 1 Components, Section III, Division 1
1/1/00
N-475 Materials in Inventory, Section III, Division 1
12/11/92 N-476 Class 1, 2, 3, and MC Linear Component SupportsDesign Criteria for Single Angle Members, Section III, Division 1, Subsection NF
7/1/96 N-482 Direct Quenched Stainless Bar, ASTM A 479-88b, Section III, Division 1
3/5/93 N-484-1 Real Time Radioscopic Examination of Welds, Section III, Division 1
12/16/94 N-492-1 Grade 9 Titanium Alloy Tubing, Section III, Division 1, Class 1, 2, and 3
1/1/00
N-493 Alternative Radiographic Acceptance Criteria for Vessels Used as Shipping Casks, Section III, Division 1, Class 1
2/9/15 N-497-1 Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials, Section III, Division 1, Class 2 and 3 Construction
1/1/99 N-501 Alternative Rules for NCA-3800, 1990 Addenda, Section III, Division 1
12/31/93 N-502 SA-268, Grade 26-3-3 (UNS S44660), Section III, Classes 2 and 3
1/1/00
 
RG 1.84, Rev. 39, Page 24 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
N-507 Identification of Welders, Section III, Division 2
7/27/05 N-540
Guidance on Implementation of NCA-3800 Revisions in 1994 Addenda, Section III, Division 1
6/30/98 N-549 Stamping and Flow Certification of Rupture Disk Devices, Classes 2 and 3, Section III, Division 1
3/19/99 N-550
Alternative Rules for Examination of Welds in Instrument Tubing, Classes 1 and 2, Section III, Division 1
5/20/01 N-551 Alternative Methods of Analysis, NC/ND-3673.1, Class 2 and 3 Applications, Section III, Division 1
8/14/97 N-558 Stamping of Class 2 Vessels Fabricated to Subsection NB, Section III,
Division 1
2/11/16 N-559 SA-203, Grade E (Plate) and SA-350, Grade LF3 (Forging), 3.5% Ni Nominal Composition Used in Class 1 Construction, Section III, Division 1
5/24/99 N-572 Use of SG-425 (UNS N08825) Bar and Rods for Class 1 Construction, Section III, Division 1
5/24/99 N-596 Use of Alternative Reference Specimens, Section III, Division 1
2/20/04 N-608 Applicable Code Edition and Addenda, NCA-1140(a)(2), Section III,
Division 1
5/20/01 N-611 Use of Stress Limits as an Alternate to Pressure Limits Subsection NC/ND-3500, Section III, Division 1
7/1/2013 N-646 Alternative Stress Intensification Factors for Circumferential Fillet Welded or Socket Welded Joints for Class 2 or 3 Piping, Section III, Division 1
11/10/14 N-657 Use of the N-1A Data Report for Spent Fuel Canisters, Section III,
Division 1
2/9/15 N-732 Magnetic Particles Examination of forgings for Construction, Section III,
Division 1
10/14/11 N-744 Use of Metric Units Boiler and Pressure Vessel Code, Section III, Divisions
1 and 3, and Section V and IX
2/11/16 N-802 Rules for Repair of Stamped Components by the N-Certificate Holder That Originally Stamped the Component, Section III, Division 1
8/12/12
1141-7 Foreign Produced Steel
7/23/76
1434-1 Postweld Heat Treatment of SA-487 Class 8N Steel Castings, Section III
1/1/78
1461-1 Electron Beam Welding, Section I, III, and VIII, Division 1 and 2
2/16/77
1470-2 External Pressure Charts for High-Strength Carbon Steels and for Low-Alloy Steels, Section VIII, Division 1 and 2, and Section III
11/4/74
1471-1 Vacuum Electron Beam Welding of Tube Sheet Joints, Section III
1/1/78
1475-1 Ferritic-Austenitic Stainless Steel Seamless Tubes for Section III,
Class 2 and 3 Construction
7/1/75
1477-1 Use of 1970 Addenda of ANSI B31.7, Section III
1/1/78
1494-1 Weld Procedure Qualification Test, Section III
1/1/78
1506 Stress Intensification Factors, Section III, Class 2 and 3 Piping
1/1/78
 
RG 1.84, Rev. 39, Page 25 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
1515 Ultrasonic Examination of Ring Forgings for Shell Sections, Section III,
Class 1 Vessels
7/1/77
1529 Materials for Instrument Line Fittings, Section III
7/1/73
1531 Electrical Penetrations, Special Alloys for Electrical Penetration Seals, Section III
3/21/77
1532 Section III, Class 3 Components Made of 8 Percent and 9 Percent Nickel Steel
1/1/78
1533 Pressure Temperature Ratings of SA-351 Grades CF8A, CF3, and CF3M,
Section III
7/1/75
1535-2 Hydrostatic Testing of Section III, Class 1 Valves
3/21/77
1536 Closing Seam for Electrical Penetrations for Section III, Class 2, 3, and MC
7/1/77
1553-1 Upset Heading and Roll Threading of SA-453 for Bolting in Section III
1/1/76
1555-1 Certification of Safety Relief Valves, Section III, Division 1
1/1/78
1567 Testing Lots of Carbon and Low Alloy Steel Covered Electrodes, Section III
1/1/78
1568 Testing Lots of Flux Cored and Fabricated Carbon and Low Alloy Steel Welded Electrodes, Section III
1/1/78
1573 Vacuum Relief Valves, Section III
1/1/78
1574 Hydrostatic Test Pressure for Safety Relief Valves, Section III
12/31/74
1580-1 Buttwelded Alignment Tolerance and Acceptable Slopes for Concentric Centerlines for Section III, Class 1, 2, and 3 Construction
1/1/78
1581 Power-Operated Pressure Relief Valves, Section III
3/1/79
1583 Use of 80-40 Carbon Steel Castings, Section III
3/21/77
1587 SA-508 Class 3 Forgings with 0.4/1.0 Ni for Section III and VIII,
Division 2 Construction
12/31/75
1590
Chemical Analysis Variations, Section III Construction
3/21/77
1601 Limits of Reinforcement for Two-Thirds Area, Section III, Class 1
7/1/74
1602-1 Use of SB-42 Alloy 122, SB-111 Alloys 122, 715 and 706 and SB-466 Alloys 706 and 715, Section III, Class 2 and 3 Components
12/31/74
1603 Toughness Tests When Cross-Section Limits Orientation and Location of Specimens
7/1/74
1605 Cr-Ni-Mo-V Bolting Material for Section III, Class 1 Components
3/17/80
1608-1 Use of ASME SB-265, SB-337, SB-338, and SB-381, Grades 1, 2, 3, and 7 Unalloyed Titanium and ASTM B-363 Titanium Welding Fittings, Section III, Class 2 and 3 Components
3/21/77
1613 Use of SA-372 Class IV Forgings, Section III Construction
1/1/78
1614 Hydrostatic Testing of Piping Prior To or Following the Installation of Spray Nozzles for Section III, Classes 1, 2, and 3 Piping Systems
1/1/79
1615 Use of A587-73, Section III, Class 3 Construction
1/1/78
 
RG 1.84, Rev. 39, Page 26 CODE CASE
NUMBER
TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
1616 Ultrasonic Examination of Seamless Austenitic Steel Pipe, Section III,
Class 1 Construction
7/1/75
1622 PWHT of Repair Welds in Carbon Steel Castings, Section III, Class 1, 2, and 3
1/1/76
1623 Design by Analysis for Section III, Class 1 Sleeve-Coupled and Other Patented Piping Joints
3/1/79
1625 Repair of Section III, Class 2 and 3 Tanks
12/31/74
1633 Brazing of Seats to Class 1, 2, and 3 Valve Body or Bonnets, Section III
1/1/78
1637 Effective Date for Compliance with NA-3700 of Section III
1/1/75
1645 Use of DeLong Diagram for Calculating the Delta Ferrite Content of Welds in Section III, Class 1, 2, and CS Construction
1/1/76
1648 SA-537 Plates for Section III, Class 1, 2, 3, and MC Components
7/1/76
1649 Modified SA-453-GR 660 for Class 1, 2, 3, and CS Construction
1/1/76
1650
Use of SA-414 Grade C for Class 2 and 3 Components, Section III,
Division 1
12/31/74
1651 Interim Requirements for Certification of Component Supports, Section III,
Subsection NF
3/1/79
1657 Stress Criteria for Class 2 and 3 Atmospheric and Low Pressure
(0-15 psig) Steel Storage Tanks
7/1/77
1659 Interconnection of Two Piping Systems for Section III, Class 1, 2, and 3 Construction
7/1/77
1661 Postweld Heat Treatment P-No.1 Materials for Section III, Class 1 Vessels
1/1/78
1662 Shop Assembly of Components, Appurtenances, and Piping Subassemblies for Section III, Class 1, 2, 3, and MC Construction
1/1/78
1664 Use of Cr-Ni-Fe-Mo-Cu-Cb Stabilized Alloy Cb-3 for Section III,
Class 2 and 3 Construction
3/21/77
1666 Use of SB-12, Alloy 122 for Class 2 and 3 Construction
7/1/75
1672 Nuclear Valves for Section III, Division 1, Class 1, 2, 3 Construction
3/21/77
1675 Tubesheet to Shell or Formed Head Weld Joints, Section III, Class 1 Vessels
7/1/76
1676 Clarification of Stress Intensities in Curved Pipe or Welded Elbows, Section III
7/1/76
1678 Butterfly Valves of Circular Cross Section Larger Than 24 in. NPS for Section III, Class 2 and 3 Construction
1/1/80
1682-1 Alternate Rules for Material Manufacturers and Suppliers, Section III,
Subarticle NA-3700
12/31/75
1683-1 Bolt Holes for Section III, Class 1, 2, 3 and MC Component Supports
7/1/76
1684 A637 Grade 718 for Bolting Class 1 and 2 Construction
1/1/76
1685 Furnace Brazing Section III, Class 1, 2, 3 and MC Construction
1/1/78
1686 Furnace Brazing, Section III, Subsection NF, Component Supports
1/1/78
 
RG 1.84, Rev. 39, Page 27 CODE CASE
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TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
1690
Stock Materials for Section III Construction, Section III, Division 1
1/1/77
1691 Ultrasonic Examination in Lieu of Radiography of Repair Welds for Vessels, Section III, Class 1
1/1/78
1703 Brazing of Copper Alloys, Section III, Class 2
1/1/78
1706 Data Report Forms for Component Supports, Section III, Class 1, 2 and 3
12/31/75
1713 Small Material Items, Section III, Division 1, Class 1, 2, 3, CS and MC
12/31/75
1718 Design of Structural Connections for Linear Type Component Supports, Section III, Division 1, Class 1, 2 and 3 and MC
7/1/76
1719 Single-Welded, Full-Penetration Sidewall Butt Joints in Atmospheric Storage Tanks, Section III, Division 1, Class 2
7/1/76
1728 Steel Structural Shapes and Small Material Products for Components Supports, Section II, Division 1 Construction
7/1/77
1740
Weld Metal Test, Section III, Class 1, 2, 3, MC, and CS
7/1/76
1741-1 Interim Rules for the Required Number of Impact Tests for Rolled Shapes, Section III, Division 1, Subsection NF, Components Supports
1/1/78
1742 Use of SB-75 Annealed Copper Alloy 122, Section III, Division 1, Class 2 Construction
7/1/76
1743 Use of SB-98 Cu-SiB Rod CDA651 Section III, Division 1, Class 2 Components
7/1/76
1760
Maximum Dimensions for Isolated Pores in WeldsClass 1 Components, Section III, Division 1
7/1/77
1765 Machining after Hydrostatic Testing Class 2 and 3 Construction, Section III, Division 1
7/1/77
1766 Testing Requirements for Welding Materials, Class 1, 2, 3, MC, and CS
Construction, Section III, Division 1
7/1/77
1767 Examination of Tubular Products without Filler MetalClass 1 Construction, Section III, Division 1
1/1/77
1768 Permanent Attachments to Containment VesselsClass MC, Section III,
Division 1
1/1/78
1769-1 Qualification of NDE Level III Personnel, Section III, Division 1
10/1/77
1773 Use of Other Product Forms of Materials for Valves, Section III,
Division 1
7/1/77
1775 Data Report Forms for Core Support Structures, Class CS, Section III,
Division 1
8/13/79
1777 Use of SA-106, Grade C in Class MC Construction, Section III, Division 1
7/1/77
1787 Depth of Weld Repairs for Forgings, Section III, Division 1, Class 1, 2, 3, MC and CS Construction
1/1/78
1798 Use of ASTM A352-75, Grades LCA and LCC, Section III, Division 1, Class 1, 2, and 3
1/1/78
 
RG 1.84, Rev. 39, Page 28 CODE CASE
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TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III
CODE CASES
ANNULMENT
DATE
1808 F-Number Classification of Low Alloy and Carbon Steel Bare Rod Electrodes, Sections I, II, III, IV, V, VIII, and IX.
 
1/1/78
1810
Testing Lots of Carbon Steel Solid, Bare Welding Electrode or Wire, Section III, Division 1, Class 1, 2, 3, MC, and CS
3/3/80
1819 Use of Type XM-19 for Construction, Section III, Division 1, Class 1, 2, 3
1/1/78
 
RG 1.84, Rev. 39, Page 29
4. Annulled Conditionally Acceptable Section III Code Cases
 
The NRC conditionally approved the Code Cases listed in Table 4; however, they were subsequently annulled by ASME. To assist users, new annulled Code Cases are shaded in grey to distinguish them from those listed in previous versions of this guide.
 
Table 4.  Annulled Conditionally Acceptable Section III Code Cases
 
CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
N-11-5
(1414-5)
High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.
 
8/29/80
N-31-1 Elastomer Diaphragm Valves, Section III, Division 1, Classes 2 and 3 Each applicant who applies the Code Case should indicate in the referencing safety analysis report that the service life of the elastomer diaphragm should not exceed the manufacturers recommended service life. This recommended service life should not exceed one-third of the minimum cycle life as established by the requirements of Paragraph 3 of the Code Case. In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.
 
7/1/93 N-32-4 Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III,
Division 1 Construction The acceptance of Code Case N-32-4 was based on the following clarification and interpretation. Code Case N-32-4 does not replace Paragraph NC/ND-6129, Provisions for Embedded or Inaccessible Welded Joints in Piping, of the Code.
 
The intent of the Code Case is to (1) provide additional testing above Code requirements and (2) permit liquid penetrant or magnetic particle testing in place of radiographic testing for Class 3 piping with a 3/8-inch nominal wall thickness or less.
 
Paragraph (1) contains an additional requirement to the Code. It was, therefore, acceptable but unnecessary to include in the Code Case.  Paragraph (2) is a variation in the volumetric examination technique and was acceptable as written.
 
Paragraph (3) contains an additional requirement and is not a relaxation of the Code. It was, therefore, acceptable but unnecessary to include in the Code Case.
 
3/16/84 N-92
(1698)
Waiver of Ultrasonic Transfer Method, Section III, V, and VIII, Division 1 The material from which the basic calibration block is fabricated should be of the same product form, alloy, and heat treatment as the material being examined.
 
Alloys of equivalent P-number groupings may be used for the fabrication of calibration blocks if adjustments to signal height can be made to compensate for sound beam attenuation difference between the calibration block and the material under examination by following the transfer method procedure in the
1977 Edition of ASME Code, Section V, Article 5, T-535.1(d).
7/13/81 N-100
(1711)
Pressure Relief Valve Design Rules, Section III, Division 1, Class 1, 2 and 3 The safety analysis report should provide the following information:
(1) If stress limits are used in excess of those specified for the upset operating condition, it should be demonstrated how the pressure relief function is ensured. Refer to paragraph 3.1, Section I, of the Code Case for Class and paragraph 3.2, Section II, of the Code Case for Class 2 and 3 pressure relief
1/1/83
 
RG 1.84, Rev. 39, Page 30
CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
valves.
 
(2) If Code Case 1660 is to be used in conjunction with the Code Case, it should be stated that the stress limits of Code Case 1660 supersede those of paragraph 3.2(b), Section I, of Code Case 1711. Functional assurance of (1)
above is required in all situations.
 
N-106-2
(1720-2)
Weld End Preparation for Section III, Division 1 Construction The acceptance of weld-end preparations other than those shown in Figures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.
 
8/14/93 N-110
(1727)
Alternate Test Fluids, Section III, Division 1 The applicant should provide justification in the referencing safety analysis report for the fluid selected for use in the pressure test. The information provided should demonstrate that the fluid selected will not have deleterious effects on the material of the pressure boundary and that the fluid may be safely used at the specified temperature and pressure of the test. When the fluid selected for use is the operating fluid, additional information is not required.
 
1/1/79 N-116
(1734)
Weld Design for Use for Section III, Division 1, Class 1, 2, 3 and MC
Construction of Component Supports If the configuration of Figure 1 of the Code Case is used for Class 1 and MC
component supports, full-penetration welds should be used. The application of the configuration shown in Figures 2 and 3 should be restricted to the welding of cans for spring encapsulation in spring hangers. In Figure 3, the length of the leg of the fillet weld adjacent to the plate should be equal to the thickness of the exposed edge of the plate. In addition, the leg of the fillet weld adjacent to the shell should be equal to the thickness of the exposed end of the shell.
 
1/1/78 N-146-1
(1780-1)
Hydrostatic Testing and Stamping of Components, Section III, Division 1, Construction On a generic basis, the application of the Code Case is limited to pumps and valves. Application to other components should be treated on a case-by-case basis. Each licensing application in which the Code Case is to be used should contain information showing that, as a minimum, the closure fixture will impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly. A closure fixture for the part being tested that is similar in size and shape to the actual mating part is considered adequate to impose these loads. It is not intended that the hydrostatic testing simulate piping reaction loadings.
 
1/1/82 N-175
(1818)
Welded Joints in Component Standard Supports, Section III, Division 1 That portion of the unwelded housing that is limited to 90 degrees maximum should include a minimum of two sectors that are uniform in length.
 
7/1/79 N-199 Intervening Elements, Section III, Division 1, Classes 1, 2, 3, and MC
Component Construction The applicants should provide information in the referencing safety analysis report that demonstrates that all intervening elements have been designed in compliance with the requirements of the respective design specification.
 
1/1/81
 
RG 1.84, Rev. 39, Page 31 CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
N-208-2 Fatigue Analysis for Precipitation Hardening Nickel Alloy Bolting Material to Specification SB-637 N07718 for Class 1 Construction, Section III, Division 1
(1) In Figure A, the words No mean stress shall be implemented with the understanding that it denotes Maximum mean stress.
 
(2) In Figure A, y shall be implemented with the understanding that it denotes max.
 
10/14/11 N-238 High Temperature Furnace Brazing of Seat Rings in Valve Bodies or Bonnets for Section III, Division 1, Class 1, 2, and 3 Valves The furnace brazing process procedure qualification should verify nonsensitization, as given in Practices A or E of ASTM A 262-70, Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels (Ref. 8), or ASTM A 708-74, Practice for Detection of Susceptibility to Intergranular Corrosion in Severely Sensitized Austenitic Stainless Steels (Ref. 9), whenever materials subject to sensitization are to be brazed. Documentation is required for the use of a nonsensitizing brazing procedure for valves produced to this Code Case.
 
1/1/82 N-242-1 Materials Certification, Section III, Division 1, Classes 1, 2, 3, MC, and CS
Construction Applicants should identify, in their safety analysis reports, the components and supports for which the Code Case is being applied and should specify the respective paragraphs of the Code Case.
 
6/30/84 N-252 Low Energy Capacitive Discharge Welding Method for Temporary or Permanent Attachments to Components and Supports, Section III, Division 1, and XI
The applicant should indicate, in the safety analysis report, the application, the material, and the material thickness to which the strain gage or thermocouple will be attached by CD welding.
 
7/1/82 N-260-2 Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1, Classes 1, 2,
3, and MC
Type 308L welding materials should not be used to repair Grade F 316 N
forgings because of the difference in strength levels.
 
12/5/88 N-263 Alternate Thread Forms, Series and Fits for Component Supports, Section III, 
Division 1 The safety analysis report should do the following:
(1) Describe the application.
 
(2) Justify the need for the use of the Code Case.
 
(3) Demonstrate that the support design will withstand maximum conditions of loading with the worst combination of thread tolerance.
 
3/17/83 N-274 Alternative Rules for Examination of Weld Repairs for Section III, Division 1 Construction The ultrasonic examination procedures shall be proven by actual demonstration to the satisfaction of the authorized nuclear inspector that the procedures are capable of detecting unacceptable cracks in accordance with Section XI,
requirements.
 
6/30/86 N-275 Repair of Welds, Section III, Division 1 Use of the Code Case applies only when the removal of an indication requires that the full weld thickness be removed and when the backside of the weld
12/31/83
 
RG 1.84, Rev. 39, Page 32 CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
assembly joint is not accessible for the removal of examination material. If an indication is removed and weld-metal layers still remain, gouging through the wall to qualify for use of the Code Case is not acceptable. Instead, the cavity must be examined when such an indication has been removed.
 
N-279 Use of Torquing as a Locking Device for Section III, Division 1, Class 1, 2, 3, and MC Component Supports When torquing or other preloading is used as a locking device and the joint is later unloaded or disassembled, the bolting should be replaced unless it can be demonstrated or proved to the authorized nuclear inspector that the original bolting has not been permanently strained.
 
7/13/81 N-292 Depositing Weld Metal Prior to Preparing Ends for Welding, Section III,
Division 1, Class 1, 2, and 3 Class 3 piping that is longitudinally welded and that has a weld efficiency factor of 1.0, as selected from ASME Code, Table ND-3613.4-1, Weld Joint Efficiency Factor, must receive a 100-percent volumetric examination (radiographic testing or ultrasonic testing) of the deposited weld metal in accordance with ASME Code, ND-5000, Examination.
 
2/20/04 N-310-1 Certification of Bolting Materials, Section III, Division 1, Class 1, 2, 3, MC, and CS
Each applicant who applies the Code Case should include the answers to the following questions in the referencing safety analysis report:
(1)
Why does the bolting not meet ASME Code, NCA-3800 (or NA-3700)?
(2)
Where will the bolting be used in the plant?
(3)
How will the applicant show that the bolting material properties required by the equipment support design specification will be present in the actual bolting material?
7/1/82 N-314 Alternate Rules for Thread Engagement, Section III, Division 1 Applicants should identify the following items in their safety analysis report:
(1)
the minimum length of thread engagement 
(2)
the procedure used to establish thread engagement
5/11/84 N-348 N-348-1 N-348-2 Use of SA-574 Socket Weld Head Cap Screws, Section III, Division 1 Applicants safety analysis reports should justify why the use of these socket head cap screws will not result in early failure from stress-corrosion cracking.
 
9/7/85
2/20/89
8/14/93 N-350
Postweld Heat Treatment Thickness of Material, Section III, Division 1 Applicants wishing to use this Code Case for materials other than P-1 materials should demonstrate that the use of this Code Case will not adversely affect the required material properties.
 
9/5/85 N-383-1 Weld Repair of SA-182 Austenitic Forgings, Section III, Division 1, Classes 1, 2, and 3 Applicants who apply the provisions of this Code Case to permit material manufacturers to weld repair austenitic forgings without resolution heat treatment should give the NRC staff (through the safety analysis report) a justification as to why this is acceptable for their applications, including their evaluation of the susceptibility for stress-corrosion cracking.
 
9/5/85
 
RG 1.84, Rev. 39, Page 33 CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
N-397 Alternative Rules to the Spectral Broadening Procedures of N-1226.3 for Classes 1, 2, and 3 Piping, Section III, Division 1 The Code Case is acceptable for specific plant applications on a case-by-case basis, pending revision of RG 1.122, Development of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components (Ref. 10).
2/20/87 N-398 Reporting of Charpy-V Notch Test Results, Section III, Division 1 The Code Case is not acceptable for steam generator or reactor coolant pump supports. Applicants wishing to use this Code Case should indicate in the safety analysis report the component supports to which the Code Case is applied for review on a case-by-case basis.
 
2/20/87 N-404 Annealed Alloy UNS N06625 Over UNS N06600 Bimetallic Tubing, Section III, Division 1, Class 1 The outside layer of the bimetallic tubing should be limited to a minimum of
5 percent and to a maximum of 40 percent of the wall thickness. The tolerance on the outside layer of material should not exceed -0.000 to +0.007 inch of the specified design wall thickness.
 
12/11/95 N-411-1 Alternative Damping Values for Response Spectra Analysis of Class 1, 2, and 3 Piping, Section III, Division 1
(1)
The Code Case damping should be used completely and consistently, if it is used at all. (For equipment other than piping, the damping values specified in RG 1.61, Damping Values for Seismic Design of Nuclear Power Plants (Ref. 11), should be used.)
(2)
The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been employed. Such use is to be limited only to response spectral analyses [similar to that used in the study supporting its acceptance, NUREG/CR-3526, Impact of Changes in Damping and Spectrum Peak Broadening on the Seismic Response of Piping Systems (Ref. 12)]. The acceptance of the use with other types of dynamic analyses (e.g., time-history analyses or independent support motion method) is pending further justification.
 
(3)
When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and online mounted equipment should be checked.
 
(4)
This Code Case is not appropriate for analyzing the dynamic response of piping systems using supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420). 
(5)      This Code Case does not apply to piping in which stress corrosion-cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.
 
5/5/00
N-430
Alternative Requirements for Welding Workmanship and Visual Acceptance Criteria for Class 1, 2, 3 and MC Linear-Type and Standard Supports, Section III, Division 1
(1)
The applicant should demonstrate that the applicable supports are not subject to cyclic loading in excess of 20,000 cycles.
 
(2)
The first sentence of 3.0(f)(1) should be replaced with the following: For material 3/8 in. and less nominal thickness, undercut depth of 1/32 in. on one side of the member for the full length of the weld, or 1/32 i
 
====n. on one ====
7/1/93
 
RG 1.84, Rev. 39, Page 34 CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
side for one-half the length of the weld, and 1/16 in. for one-fourth of the length of the weld on the face of a rectangular tube or one-fourth the length of the weld on the same side of the member is acceptable.
 
N-595-4 Requirements for Spent Fuel Storage Canisters, Section III, Division 1 The canisters must be made from austenitic stainless steel Type 304 or 316.
 
10/14/11 N-656 Rules for the Construction of Inner Transportation Containments, Section III,
Division 3 The inner transportation containment must contain only solid and dry material.
 
5/11/10
1361-2 Socket Welds, Section III
Code Case 1361-2 was acceptable when used in connection with Section III,
Paragraph NB-3356, Fillet Welds.
 
3/1/79
1412-4 Modified High Yield Strength Steel for Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case. The material given in the Inquiry section of the Code Case should be SA-508, Class 4b, instead of SA-508, Class 4.
 
1/1/77
1423-2 Wrought Type 304 and 316 with Nitrogen Added, Sections I, III, VIII, Divisions 1 and 2 Code Case 1423-2 was acceptable subject to compliance with the recommendations in RG 1.31, Control of Ferrite Content in Stainless Steel Weld Metal (Ref. 13), and RG 1.44, Control of the Use of Sensitized Stainless Steel (Ref. 14).
7/1/77
1521-1 Use of H-Grades of SA-240, SA-479, SA-336, and SA-358, Section III
Code Case 1521-1 was acceptable subject to compliance with the recommendations contained in RG 1.31 (Ref. 13) and RG 1.44 (Ref. 14).
1/1/78
1528-3 High Strength Steel SA-508, Class 2 and SA-541, Class 2 Forgings, Section III,
Class 1 Components Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.
 
1/1/78
1569 Design of Piping for Pressure Relief Valve Station, Section III
Code Case 1569 was acceptable subject to compliance with the recommendations in RG 1.67, Installation of Over-Pressure Protection Devices (Ref. 15).
7/1/79
1606-1 Stress Criteria Section III, Classes 2 and 3 Piping Subject to Upset, Emergency, and Faulted Operating Conditions Code Case 1606-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
 
7/1/77
1607-1 Stress Criteria for Section III, Classes 2 and 3 Vessels Designed to NC/NC-3300
Excluding the NC-3200 Alternate Code Case 1607-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code
7/1/77
 
RG 1.84, Rev. 39, Page 35 CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
 
1635-1 Stress Criteria for Section III, Class 2 and 3 Valves Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1635-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class
2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
 
7/1/77
1636-1 Stress Criteria for Section III, Class 2 and 3 Pumps Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1636-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
 
7/1/77
1689-1 Alternate PWHT Time and Temperature for SA-182 Grade F-22, SA-387 Grade 22, Class 2, and SA-335 Grade P-22 Section III, Class 1, 2, 3 and CS
The alternate postweld heat treatment (PWHT) should be prequalified along with the applicable welding procedure in accordance with Section IX.
 
1/1/78
1783-1 Qualification of Nondestructive Examination Personnel, Section III, Division 1 The first sentence of Paragraph 1 of the Code Case should be replaced with the following: The certification of the Level III nondestructive examination personnel for the purpose of this Section of the Code will be the responsibility of the employer of the Level III individual. If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder.
 
1/1/79
 
RG 1.84, Rev. 39, Page 36
5. Code Cases Superseded by Revised Code Cases
 
The Code Cases listed in Table 5 were approved in prior versions of this guide and have since been superseded by revised Code Cases (on or after July 1, 1974). The date in Column 3 indicates the date on which the ASME approved the revision to the Code Case. Note that the NRC unconditionally approved the Code Cases listed without conditions. The versions of the Code Cases listed in Table 5 cannot be applied by the licensee or applicant for the first time after the effective date of this RG. To assist users, changes to superseded Code Cases are shaded in grey to distinguish them from those listed in previous versions of this guide. (Note: The NRC did not approve some of these Code Cases in previous versions of this guide.)
 
Table 5.  Section III Code Cases That Have Been Superseded by Revised Code Cases on or after July 1, 1974
 
CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
N-4-11
(1337-11)
N-4-12 Special Type 403 Modified Forgings or Bars, Section III, Division 1, Class 1 and CS
1/12/05
 
2/12/08 N-5
(1344-5)
Nickel-Chromium, Age-Hardenable Alloys (Alloy X750), Section III
12/13/82 N-7
(1358-5)
High Yield Strength Steel, Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.
 
12/13/82 N-20
(1484-3)
N-20-1 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at Nickel-Iron-Chromium Alloy 800 at a Specified Minimum Yield Strength of
40.0 ksi, Section III, Division 1, Class 1
9/5/85
 
12/7/87 N-20-2 N-20-3 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at Nickel-Iron-Chromium Alloy 800 at a Specified Minimum Yield Strength of
40.0-ksi and Cold Worked Alloy 800 at a yield strength of 47.0-ksi, Section III,
Division 1, Class 1
11/30/88
2/26/99 N-31
(1540-2)
Elastomer Diaphragm Valves, Section III, Class 2 and 3 Each applicant who applies the Code Case should indicate in the referencing safety analysis report that the service life of the elastomer diaphragm should not exceed the manufacturers recommended service life. This recommended service life should not exceed one-third of the minimum cycle life as established by the requirements of Paragraph 3 of the Code Case. In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.
 
7/18/85 N-55
(1609-1)
Inertia and Continuous Drive Friction Welding, Section I, III, IV, VIII,
Division 1 and 2, and IX
4/5/84 N-60
(1618-2)
N-60-1 Material for Core Support Structures, Section III, Division 1, Subsection NG
Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition.
 
5/25/83
 
9/17/84 N-60-2 N-60-3 N-60-4 Material for Core Support Structures, Section III, Division 1, Subsection NG
9/5/85
5/13/91
2/15/94 Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition. For SA-479 material, the maximum yield strength should not exceed 90,000 pounds
 
RG 1.84, Rev. 39, Page 37 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
per square inch (psi) because of the susceptibility of this material to environmental cracking.
 
N-60-5 Material for Core Support Structures, Section III, Division 1, Class 1 The maximum yield strength of strain-hardened austenitic stainless steel shall not exceed 90,000 psi because of the susceptibility of this material to environmental cracking.
 
2/20/04 N-62-2
(1621-2)
N-62-3 N-62-4 N-62-5 N-62-6 Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 Line Valves The Code Case requires Class 1 and Class 2 valve manufacturers to meet the provisions of Section III, Article NCA-4000, and Class 3 valve manufacturers should also meet the provisions of Article NCA-4000.
 
7/18/85
 
9/5/85
7/24/89
12/11/89
5/11/94 N-71-7
(1644-7)
N-71-8
(1644-8)
Additional Materials for Component Supports, Section III, Division 1, Subsection NF, Class 1, 2, 3 and MC Component Supports The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that (1) the impact test results for the material meet the Code requirements and (2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
5/15/78
 
1/7/80
N-71-9
(1644-9)
Additional Materials for Component Supports Fabricated by Welding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports In the last sentence of Paragraph 5.3 of the Code Case, reference should be made to Paragraph 4.5.2.2, Alternate Atmosphere Exposure Time Periods Established by Test, of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.
 
5/11/81 N-71-10
N-71-11 Additional Materials for Component Supports Fabricated by Welding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that
(1) the impact test results for the material meet Code requirements and
(2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
The last sentence of Paragraph 5.3 of the Code Case should reference Paragraph
4.5.2.2 of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.
 
6/17/82
2/14/83
 
RG 1.84, Rev. 39, Page 38 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
N-71-12 Additional Materials for Component Supports Fabricated by Welding, Section III, Division 1, Class 1, 2, 3 and MC
The maximum measured UTS of the component support material should not exceed 170 ksi in view of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that (1) the impact test results for the material meet Code requirements and
(2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
The last sentence of Paragraph 5.3 of the Code Case should reference Paragraph
4.5.2.2 of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.
 
Paragraph 16.2.2 is not acceptable as written and should be replaced with the following: When not exempted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710
Grade A material, it should be at least 1000&deg;F (540&deg;C) and should not exceed
1150&deg;F (620&deg;C) for Class 1 and Class 2 material and 1175&deg;F (640&deg;C) for Class 3 material. The new holding time at temperature for weld thickness (nominal)
should be 30 minutes for 2 inches or less, 1 hour per inch for thickness over
2 inches to 5 inches, and 5 hours plus 15 minutes for each additional inch over 5 inches.
 
2/20/84 N-71-13 N-71-14 N-71-15 N-71-16 N-71-17 N-71-18
 
Additional Materials for Subsection NF, Classes 1, 2, 3 and MC Component Supports Fabricated by Welding, Section III, Division 1
(1)
The maximum measured UTS of the component support material must not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking.
 
(2)
Certain applications may exist for which a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification must specify impact testing for the material. For these cases, the applicant must demonstrate that (1) the impact test results for the material meet the Code requirements and (2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
(3) In the last sentence of Paragraph 5.3 of the Code Case, reference must be made to Paragraph 5.3.2.3, Alternative Atmosphere Exposure Time Periods Established by Tests, of the AWS D1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.
 
(4) Paragraph 15.2.2 of the Code Case is not acceptable as written and must be replaced with the following: When not exempted by 15.2.1 above, the postweld heat treatment must be performed in accordance with NF-4622 except that ASTM A-710 Grade A Material must be at least 1000&deg;F (540&deg;C)
12/5/85
12/16/86
2/12/93
12/31/96
12/8/00
11/8/12
 
RG 1.84, Rev. 39, Page 39 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
and must not exceed 1150&deg;F (620&deg;C) for Class 1 and Class 2 material and
1175&deg;F (640&deg;C) for Class 3 material.
 
(5) The new holding time at temperature for weld thickness (nominal) must be
30 minutes for 2 inches or less; 1 hour per inch for thickness over 2 inches to
5 inches; and for thicknesses over 5 inches, 5 hours plus 15 minutes for each additional inch over 5 inches.
 
The fracture toughness requirements as listed in this Code Case apply only to piping supports, not to Class 1, Class 2, and Class 3 component supports.
 
N-71-19
 
Additional Materials for Subsection NF, Classes 1, 2, 3 and MC Component Supports Fabricated by Welding, Section III, Division 1
(1) The maximum measured ultimate tensile strength (UTS) of the component support material must not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking.
 
(2) In the last sentence of Paragraph 5.2 of Code Case N7119, reference must be made to Paragraph 5.3.2.3, Alternative Atmosphere Exposure Time Periods Established by Test, of the AWS D1.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for a longer period of time.
 
(3) Paragraph 16.2.2 of Code Case N-71-19 is not acceptable as written and must be replaced with the following: When not exempted by 16.2.1 above, the post weld heat treatment must be performed in accordance with NF4622 except that ASTM A-710 Grade A Material must be at least 1000&deg;F (540&deg;C)
and must not exceed 1150&deg;F (620&deg;C) for Class 1 and 2 material and 1175&deg;F
(640&deg;C) for Class 3 material.
 
(4) The new holding time at temperature for weld thickness (nominal) must be
30 minutes for welds 0.5 inch or less; 1 hour per inch of thickness for welds over 0.5 inch to 5 inches; and for thicknesses over 5 inches, 5 hours plus
15 minutes for each additional inch over 5 inches.
 
(5) The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, 2 and 3 component supports.
 
(6) When welding P-number materials listed in the Code Case, the corresponding S-number welding requirements shall apply.
 
6/30/16 N-95-1
(1701-1)
Determination of Capacities of Vacuum Relief Valves, Section III, Division 1 and
2, Class MC
7/9/79 N-102-1
(1714-2)
Postweld Heat Treatment of P-1 Material, Section III, Class MC
8/28/78 N-119-2
(1739-2)
N-119-3
(1739-3 N-119-4
(1739-4)
N-119-5 Pump Internal Items, Section III, Division 1, Class 1, 2, and 3
8/25/80
 
12/1/80
 
7/18/85
 
9/5/85 N-122 Stress Indices for Structural Attachments, Class 1, Section III, Division 1
7/24/89 N-133
(1761-1)
Use of SB-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves
1/14/77 N-133-1 N-133-2 Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 3
5/19/85
7/18/85
 
RG 1.84, Rev. 39, Page 40
CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
N-154
(1791)
Projection Resistance Welding of Valve Seats, Section III, Division 1, Class 1, 2 and 3 Valves
7/18/85 N-155-2 Fiberglass Reinforced Thermosetting Resin Pipe, Section III, Division 1
(1)
The design temperature for spray pond piping must be 100&deg;C (212&deg;F).
(2)
The allowable design stress must be the value obtained from the minimum hydrostatic design basis in Table 3611-1 of Code Case N-155-2 (Procedure A or B) or the value determined as one-sixth of the stress obtained from a short-time burst test for the pipe being qualified, whichever is lower. The short-time burst strength must be determined by bursting the pipe (ASTM
D-1599-74) using free-end mounting after it has been exposed to 1x105 pressure cycles from atmospheric to design pressure.
 
(3)
The value of K in Equation 9 of Paragraph 3652 must be limited to 1.2 unless it can be demonstrated that, with the use of a large value of K1, the functional capability of the system will not be impaired during upset and emergency conditions.
 
(4)
RTR piping must be uninsulated or uncovered and installed under conditions that make it readily accessible for inspection.
 
(5)
Preoperational and inservice inspections must be as follows:
(a)
During the preoperational testing period, tests must be made to verify that the piping is free of vibration induced by weather conditions or water flow that could fatigue the piping prematurely.
 
(b)
Fiberglass-reinforced piping components must be inspected in accordance with ASME Code, Section XI, for Code Class 3 components. In addition, all pipe supports must be inspected.
 
(c)
Inspection frequency for piping must be increased to once annually if an exterior weather-resistant coating is not provided.
 
2/11/16 N-160
(1797)
Finned Tubing for Construction, Section III, Division 1
7/18/85 N-188 Use of Welded Ni-Fe-Cr-Mo-Cu (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625)
Tubing, Section III, Division 1, Class 3
1/1/78 N-192 N-192-1 N-192-2 Use of Flexible Hose for Section III, Division 1, Class 1, 2, and 3 Construction The applicant should indicate the system application, design and operating pressure, and pressure-temperature rating of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC-ND-
3649.4(e), are required to be furnished with the application.
 
8/30/79
9/16/81
7/23/02 N-196 Exemption from the Shake-down Requirements When Plastic Analysis is Performed for Section III, Division 1, Class 1 Construction
1/8/79 N-207 Use of Modified SA-479 Type XM-19 for Section III, Division 1, Class 1, 2, or 3 Construction
3/19/79 N-208-1 Fatigue Analysis for Precipitation Hardening Nickel Alloy Bolting Material to Specification SB-637 N07718 for Section III Division 1, Class 1 Construction
2/14/03 N-214 N-214-1 Use of SA-351, Grade CN7M, for Valves for Section III, Division 1, Construction
9/7/82
5/25/83 N-224 Use of ASTM A500 Grade B and ASTM A501 Structural Tubing for Welded Attachments for Section III, Class 2 and 3 Construction
5/11/81
 
RG 1.84, Rev. 39, Page 41 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
N-237 Hydrostatic Testing of Internal Piping, Section III, Division 1
9/7/82 N-237-1 Hydrostatic Testing of Internal Piping, Section III, Division 1, Classes 2 and 3
5/25/83 N-242 Materials Certification, Section III, Division 1, Classes 1, 2, 3, MC, and CS
Construction Applicants should identify the components and supports that require the use of Paragraphs 1.0 through 4.0 of the Code Case in their safety analysis reports.
 
4/10/80
N-246 Use of SB-169 Alloy CA614, Section III, Division 1, Class 3
9/7/82 N-246-1 SB-169, Alloy C 61400, Section III, Division 1, Class 3
5/25/83 N-249 Additional Materials for Component Supports Fabricated without Welding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports Footnote 2 of the Code Case should apply to all materials listed in Tables 1, 2, 3,
4, and 5 of the Code Case and should be so indicated on line 5 of the Reply.
 
5/11/81 N-249-1 Additional Materials for Component Supports Fabricated without Welding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports Paragraph 7 of the Reply should reference the requirements in Paragraph NF-2600 instead of those in Paragraph NF-2800. This is a typographical error because Paragraph NF-2800 does not exist.
 
6/17/82 N-249-2 N-249-3 Additional Materials for Subsection NF Class 1, 2, 3, and MC Component Supports Fabricated without Welding, Section III, Division 1
2/14/83
2/20/84 N-249-4 N-249-5 Additional Material for Subsection NF, Classes 1, 2, 3, and MC Component Supports Fabricated without Welding, Section III, Division 1 The fracture toughness requirements, as listed in Code Case N-249-4, apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with Section 5.3.4 of NUREG-0800, Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition (SRP) (Ref. 16), or on a case-by-case basis.
 
9/17/84
4/8/85 N-249-6 N-249-7 N-249-8 N-249-9 N-249-10
N-249-11 N-249-12 N-249-13 Additional Material for Subsection NF, Classes 1, 2, 3, and MC Component Supports Fabricated without Welding, Section III, Division 1 The fracture toughness requirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with SRP
Section 5.3.4 (Ref. 16), or on a case-by-case basis. The following should be added to Paragraph 5 of the Code Case: For these cases, the owner should demonstrate that (1) the impact test results for the material meet Code requirements and (2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
9/5/85
12/5/85
12/16/86
5/6/89
5/13/91
2/12/93
5/11/94
12/8/00
N-249-14 Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component Supports Fabricated without Welding, Section III, Division 1
(1)
The fracture toughness requirements apply only to piping supports, not to Class 1, Class 2, and Class 3 component supports.
 
(2)
The following should be added to Paragraph (e) of the Code Case: For these cases, the owner must demonstrate that (1) the impact test results for the material meet Code requirements and (2) the material is not subject to
2/20/04
 
RG 1.84, Rev. 39, Page 42 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
N-249-15 N-249-16 Additional Materials for Subsection NF, Classes 1, 2, 3, and MC Supports Fabricated without Welding, Section III, Division 1
7/15/14
4/10/18 N-260
Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1, Classes 1, 2, 3, and MC
7/18/85 N-260-1 Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1, Classes 1, 2, 3, and MC
Type 308L welding materials should not be used to repair Grade F 316 N forgings because of the difference in strength levels.
 
12/5/85 N-265 Modified SA-487 Castings, Section III, Division 1, Class 1
5/19/85 N-284-1 Metal Containment Shell Buckling Design Methods, Section III, Division 1, Class MC
This Code Case is listed in RG 1.193.
 
10/2/00
N-284-2 N-284-3 Metal Containment Shell Buckling Design Methods, Class MC, TC, and SC
Construction, Section III, Divisions 1 and 3
1/10/07
12/17/12 N-299 Use of Nickel-Chromium-Molybdenum-Columbium Alloy 625 Forgings, Section III, Division 1, Class 2 and Class 3 Components
7/18/85 N-304 N-304-1 N-304-2 N-304-3 Use of 20 Cr-25Ni-6Mo (Alloy UNS N08366) Welded Tubes for Section III,
Division 1, Classes 2 and 3 Construction
7/12/84
5/19/85
12/5/85
2/23/87 N-309 Identification of Materials for Component Supports, Section III, Division 1
5/11/84 N-318 N-318-1 N-318-2 N-318-3 N-318-4 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping, Section III, Division 1 Applicants should identify the following in their safety analysis report:
(1)
the method of lug attachment
(2)
the piping system involved
(3)
the location in the system where the Code Case will be applied
2/20/84
7/12/84
9/5/85
12/11/89
4/28/94 N-319 N-319-1 N-319-2 Alternate Procedure for Evaluation of Stresses in Butt Weld Elbows in Class 1 Piping, Section III, Division 1
7/24/89
8/14/90
1/17/00
N-321 Use of Modified SA-249, Type 304, Section III, Division 1, Class 1 Construction
12/5/85 N-337 Use of ASTM B 525-70 Grade II, Type II, Sintered Austenitic Stainless Steel for Class 2, 3, and MC Component Standard Supports, Section III, Division 1
7/18/85 N-345 Attachment of AMS 5382 Alloy 31 Seat Rings by Friction Welding, Section III, 
Division 1, Classes 1, 2, and 3
12/13/82 N-352 Use of SA-638 Grade 660 Forgings and Bars below 700&deg;F without Stress Rupture Tests, Section III, Division 1
7/18/85 N-362 Alternate Rules for Pressure Testing of Containment Items, Section III,
Division 1
12/13/82
 
RG 1.84, Rev. 39, Page 43 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
N-362-1 Pressure Testing of Containment Items, Section III, Division 1, Classes 1, 2, and MC
7/12/84 N-370
N-370-1 Modified SA-705 Grade XM-13 Forgings, Section III, Division 1
7/18/85
12/5/85 N-371
12Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals, Section III,
Division 1
7/18/85 N-373-1 N-373-2 Alternative PWHT Time at Temperature for P-No. 5 Material, Section III,
Division 1, Classes 1, 2, and 3
9/7/01
11/2/04 N-379 Bimetallic Tubing Section III, Division 1, Class 1
7/18/85 N-383 Weld Repair of SA-182 Austenitic Forgings, Section III, Division 1, Classes 1, 2, and 3 Applicants who apply the provisions of the Code Case to permit material manufacturers to weld repair austenitic forgings without resolution heat treatment should justify to the NRC staff (through the safety analysis report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress-corrosion cracking.
 
7/18/85 N-391 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Class 1 Piping, Section III, Division 1
7/24/89 N-391-1 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Class 1 Piping, Section III, Division 1 The following typographical errors need to be corrected:
(1)
In Equation 3, the + sign should be changed to an = sign.
 
(2)
In Equation 4, the first + sign should be changed to an = sign.
 
8/24/95 N-392 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Classes 2 and 3 Piping, Section III, Division 1
12/11/89 N-392-1 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Classes 2 and 3 Piping, Section III, Division 1 Applicants should identify the following in their safety analysis report:
(1)
the method of lug attachment
(2)
the piping system involved
(3)
the location in the system where the Code Case will be applied
12/11/92 N-392-2 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Classes 2 and 3 Piping, Section III, Division 1 Applicants should identify in their safety analysis report:
(1)
the method of lug attachment
(2)
the piping system involved
(3)
the location in the system where the Code Case will be applied
12/12/94 N-411 Alternative Damping Values for Seismic Analysis of Classes 1, 2, and 3 Piping Sections, Section III, Division 1
(1)
The damping values specified may be used to analyze piping response for seismic and other dynamic loads that are being filtered through building structures provided that the response mode frequencies are limited to
33 hertz and below. Within this range, the Code Case damping should be used completely and consistently, if it is used at all. (For equipment other
2/20/86
 
RG 1.84, Rev. 39, Page 44 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
than piping, the damping values specified in RG 1.61 (Ref. 11), should be used.)
(2)
The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been employed. Such use should be limited only to response spectral analyses [similar to that used in the study supporting its acceptance, NUREG/CR-3526 (Ref. 12)]. The acceptance of the use with other types of dynamic analyses (e.g., time- history analysis) is pending further justification.
 
(3)
When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and online mounted equipment should be checked.
 
(4)
This Code Case is not appropriate for analyzing the dynamic response of piping systems that use supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420).
(5)
This Code Case does not apply to piping in which stress-corrosion cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.
 
N-418 Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028 and UNS N08904)
Tubing, Section III, Division 1, Classes 2 and 3
7/30/86 N-438 N-438-1 N-438-2 Fe-24.5Ni-21Cr-6.5 Mo-0.2N (Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction, Section III,
Division 1
3/8/89 Reinstated on 5/24/96
7/27/92 N-438-3 UNS N08367 Material, Section III, Division 1, Class 2 and 3 Construction
5/24/96 N-439 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Forgings, Plate, Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction, Section III,
Division 1
7/10/00
N-440
Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction, Section III, Division 1
7/10/00
N-441 N-441-1 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction, Section III, Division 1
11/25/92
7/10/00
N-443 N-443-1 High Yield Strength Cr-Mo Steel, Class 1 Components, Section III, Division 1
3/8/89
11/11/99 N-453 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Welded Pipe for Class 2 and 3 Construction, Section III, Division 1
11/30/88 N-453-1 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Seamless and Welded Pipe for Class 2 and 3 Construction, Section III, Division 1
4/30/92 N-453-2 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925 and N08926) Seamless and Welded Pipe for Class 2 and 3 Construction, Section III,
Division 1
12/12/95 N-454 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Wrought Fittings for Class 2 and 3 Construction, Section III, Division 1
4/30/92 N-455 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Forged Flanges and Fittings for Class 2 and 3 Construction, Section III, Division 1
4/30/92
 
RG 1.84, Rev. 39, Page 45 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
N-466 Modified 9Cr-1Mo Material, Section III, Division 1, Classes 1, 2, and 3
4/30/90
N-469 Martensitic Stainless Steel for Class 1, 2, and 3 Components, Section III,
Division 1
6/14/00
N-474 Design Stress Intensities and Yield Strength Values for Alloy 690 with a Minimum Yield Strength of 35 ksi, Class 1 Components, Section III, Division 1
3/5/90
N-474-1 Design Stress Intensities and Yield Strength Values for UNS N06690 with a Minimum Specified Yield Strength of 35 ksi, Class 1 Components, Section III,
Division 1
12/9/93 N-484 Real Time Radioscopic Examination of Welds, Section III, Division 1
12/16/91 N-492 Grade 9 Titanium Alloy Tubing, Section III, Division 1, Class 1, 2, and 3
5/11/94 N-497 Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials, Section III, Division 1, Class 2 and 3 Construction
12/9/93 N-500
 
N-500-1 N-500-2 N-500-3 Alternative Rules for Standard Supports for Classes 1, 2, 3, and MC, Section III,
Division 1
12/9/93
 
8/14/01
2/20/04
8/5/11 N-510
Borated Stainless Steel for Class CS Core Support Structures and Class 1 Components, Section III, Division 1
12/12/94 N-520
 
N-520-1 N-520-2 N-520-3 N-520-4 N-520-5 Alternative Rules for Renewal of N-type Certificates for Plants Not in Active Construction, Section III, Division 1
10/26/94


"  Class 3 valve manufacturers must also meetthe provisions of NCA-4000 because all Code Class valve items are subject to the licensee
5/9/03
's 10 CFR 50, Appendix Bapproved QA program.N-71-17Additional Materials for Subsection NF, Class 1, 2, 3, and MCComponent Supports Fabricated by Welding, Section III,
11/1/07
Division 16/98E(1) The maximum measured ultimate tensile strength (UTS)of the component support material must not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking.
11/10/09
3/13/12
5/18/2012 N-539 UNS N08367 in Class 2 and 3 Valves, Section III, Division 1
8/16/16 N-564 N-564-1 UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction, Section III,  
Division 1
7/30/98
12/31/96 N-570


(2) Certain applications may exist where a UTS value of up to 190 Ksi could be considered acceptable for a material and, under this condition, the Design Specification must specify impact testing for the material.  For these cases, it must be demonstrated by the applicant that:  (a) the impact test results for the material meet Code requirements, (b) the material is not subject to stress corrosion cracking by virtue of the fact that:  (i) a corrosive environment is not present and (ii) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.
Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1,
2, 3, and MC, Section, III, Division 1
3/28/06
1/5/06 N-570-1 Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1, 2,
3, and MC, Section III, Division 1 The provisions of ANSI/AISC N690-1994 s2, Supplement No. 2 to the Specification for the Design, Fabrication, and Erection of Steel of Safety-Related Structures for Nuclear Facilities, must be met.


CODE CASENUMBERTABLE 2, CONDITIONALLY ACCEPTABLE CODE CASESSUPPLEMENT/EDITIONTITLE / CONDITION
1/5/06 N-580
10N-71-17(cont'd)Additional Materials for Subsection NF, Class 1, 2, 3, and MCComponent Supports Fabricated by Welding, Section III,
N-580-1 Use of Alloy 600 with Columbium Added, Section III, Division 1
Division 16/98E(3) In the last sentence of paragraph 5.3, reference must bemade to paragraph 4.5.2.2, "Alternate AtmosphereExposure Time Periods Established by Test," of the AWSD.1.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time.
5/26/97
5/20/98 N-594 Repairs to P-4 and P-5A Castings without Postweld Heat Treatment Class 1, 2, and 3 Construction, Section III, Division 1
3/2/98 N-595-3 Requirements for Spent Fuel Storage Canisters, Section III, Division 1 The canisters must be made from austenitic stainless steel Type 304 or 316.


(4) Paragraph 16.2.2 is not acceptable as written and must be replaced with the following: 
4/8/02 N-621 Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800&deg;F, Section III,
"When not exempted by16.2.1 above, the postweld heat treatment must be performed in accordance with NF-4622 except that ASTM
Division 1  
A-710 Grade A Material must be at least 1000F (540C)and must not exceed 1150F (620C) for Class 1 and Class2 material and 1175F (640C) for Class 3 material.(5) The new holding time at temperature for weld thickness (nominal) must be 30 minutes for
11/2/04
1/2 inch or less, 1 hour perinch for thickness over
1/2 inch to 5 inches, and 5 hours plus15 minutes for each additional inch over 5 inches.


(6) The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class
RG 1.84, Rev. 39, Page 46 CODE CASE
1, Class 2, and Class 3 component supports.N-155-2Fiberglass Reinforced Thermosetting Resin Pipe, Section III, Division 18/98E(1) The design temperature for spray pond piping must be
NUMBER
100C (212F).(2) The allowable design stress must be the value obtained from the minimum hydrostatic design basis (HDB) in Table
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
3611-1 of Code Case N-155-2 (Procedure A or B) or the value determined as one-sixth of the stress obtained from a short-time burst test for the pipe being qualified, whichever is lower.  The short-time burst strength must be determined by bursting the pipe (ASTM D-1599-74) using free-end mounting after it has been exposed to 10
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
5 pressure cyclesfrom atmospheric to design pressure.
DATE
N-625 Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800&deg;F, Section III,  
Division 1  
3/28/01 N-635 Use of 22Cr-5Ni-3Mo-N (Alloy UNS S31803) Forgings, Plate, Bar, Welded and Seamless Pipe, and/or Tube, Fittings, and Fusion Welded Pipe with Addition of Filler Metal, Classes 2 and 3, Section III, Division 1
2/14/03 N-637 Use of 44Fe-25Ni-21Cr-Mo (Alloy UNS N08904) Plate, Bar, Fittings, Welded Pipe, and Welded Tube, Classes 2 and 3, Section III, Division 1


(3) The value of  
9/20/10
"K" in equation 9 of paragraph 3652 mustbe limited to 1.2 unless it can be demonstrated that with the use of a large value of K
N-644 Weld Procedure Qualification for Procedures Exempt from PWHT in Class 1, 2, and 3 Construction, Section III, Division 1 Reinstated
1 the functional capability of thesystem will not be impaired during upset and emergency conditions.
2/14/03 N-655 Use of SA-738, Grade B, for Metal Containment Vessels, Class MC, Section III,
Division 1 For metal containment vessels up to 1.75 inches thick, the following requirements apply:
(1)    Supplementary Requirement S17, Vacuum Carbon-Deoxidized Steel, of Material Specification SA-738 must be applied to the material.


(4) RTR piping must be uninsulated or uncovered and installed under conditions that make it readily accessible for inspection.
(2)   Supplementary Requirement S20, Maximum Carbon Equivalent for Weldability, of Material Specification SA-738 must be applied to the material.


CODE CASENUMBERTABLE 2, CONDITIONALLY ACCEPTABLE CODE CASESSUPPLEMENT/EDITIONTITLE / CONDITION
2/25/02 N-692 Use of Standard Welding Procedures, Section III, Division 1
11N-155-2(cont'd)Fiberglass Reinforced Thermosetting Resin Pipe, Section III, Division 18/98E(5) Preoperational and inservice inspections must be asfollows:  (a) During the preoperational testing period, tests must be made to verify that the piping is free of vibration induced by weather conditions or water flow that could fatigue the piping prematurely.  (b) Fiberglass-reinforced piping components must be inspected in accordance with ASME Code, Section XI, for Code Class 3 components.  In addition, all pipe supports must be inspected.  (c)
5/9/16 N-755-3 Use of Polyethylene (PE) Class 3 Plastic Pipe, Section III, Division 1
Inspection frequency for piping must be increased to once annually if an exterior weather-resistant coating is not provided.N-249-13Additional Materials for Subsection NF, Class 1, 2, 3, and MCComponent Supports Fabricated Without Welding, Section III,
5/11/17 N-757 Alternative Rules for Acceptability for Class 2 and 3 Valves (DN 25) and Smaller with Welded and Nonwelded End Connections Other Than Flanges, Section III,  
Division 19/95E(1) The fracture toughness requirements apply only topiping supports and not to Class 1, Class 2, and Class 3 component supports.
Division 1
1/21/07 N-759 N-759-1 Alternative Rules for Determining Allowable External Pressure and Comprehensive Stresses for Cylinders, Cones, Spheres, and Formed Heads, Class 1, 2, and 3, Section III, Division 1
10/4/06
10/19/07 N-760
N-760-1 Welding of Valve Plugs to Valve Stem Retainers, Classes 1, 2, and 3, Section III,
Division 1
3/27/07
2/12/08 N-801 N-801-1 N-801-2 Rules for Repair of N-Stamped Class 1, 2, and 3 Components, Section III,  
Division 1
8/12/12
5/9/16
5/11/17 N-822 N-822-1 N-822-2 N-822-3 Application of the ASME Certification Mark Section III, Divisions 1, 2, 3, and 5
12/6/11
12/17/12
12/28/15
8/2/16 N-863 Postweld Heat Treatment (PWHT) of Valve Seal Welds for P4 and P5A Materials, Section III, Division 1
2/16/17 N-870
Rules for the Elimination of External Surface Defects on Class 1, 2, and 3 Piping, Pumps, or Valves After Component Stamping and Prior to Completion of the N-3 Data Report, Section III, Division 1
11/2/17
1332-6 Requirements for Steel Forgings, Section III, Division 1
3/1/79
1335-9 Requirements for Bolting Materials
8/28/78


(2) The following is to be added to paragraph (e) of the
RG 1.84, Rev. 39, Page 47 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
1337-9
1337-10
Special Type 403 Modified Forgings or Bars, Section III
4/28/75
5/15/78
1395-3 SA-508, Class 2 Forgings with Modified Manganese Content, Section III or Section VIII, Division 2
1/8/79
1407-2 Time of Examination for Class 1, 2, and 3, Section III Vessels
7/1/74
1414-3
1414-4 High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.


Code Case:
3/1/76
(a) For these cases, it must be demonstrated by the Owner that:  (i) the impact test results for the material meet Code requirements, and (ii) the material is not subject to stress corrosion cracking by virtue of the fact that: a corrosive environment is not present; the component that contains the material has essentially no residual stresses or assembly stresses; and it does not experience frequent sustained loads in service.N-292Depositing Weld Metal Prior to Preparing Ends for Welding,Section III, Division 1, Class 1, 2, and 312/95EClass 3 piping that is longitudinally welded and that has aweld efficiency factor of 1.0 as selected from Table ND-3613.4-1, "Weld Joint Efficiency Factor," must receive a100 percent volumetric examination (RT or UT) of the deposited weld metal in accordance with the requirements of ND-5000, "Examination.
8/9/77
1484-1 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600) at a Specified Minimum Yield Strength of 40.0 ksi, Section III, Class 1
11/4/74
1484-2 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at a Specified Minimum Yield Strength of 40.0 ksi, Section III, Class 1
8/13/76
1492 Post Weld Heat Treatment, Section I, III, and VIII, Division 1 and 2
3/3/75
1508 Allowable Stresses, Design Intensity and/or Yield Strength Values, Section I, III,  
and VIII, Divisions 1 and 2
6/30/75
1516-1 Welding of Seats in Valves for Section III Applications
8/11/75
1540-1 Elastomer Diaphragm Valves, Section III, Classes 2 and 3
1/14/77
1541-1 Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III
Construction
9/30/76
1541-2 Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III,
Division 1 Construction
5/15/78
1552 Design by Analysis of Section III, Class 1 Valves
8/29/77
1553 Upset Heading and Roll Threading of SA-453 for Bolting in Section III
3/3/75
1555 Certification of Safety Relief Valves on Liquids
1/14/77
1557-2 Steel Products Refined by Secondary Remelting
1/8/79
1606 Stress Criteria for Section III, Class 2 and 3 Piping Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1606 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.


"
12/16/74
CODE CASENUMBERTABLE 2, CONDITIONALLY ACCEPTABLE CODE CASESSUPPLEMENT/EDITIONTITLE / CONDITION
1607 Stress Criteria for Section III, Classes 2 and 3 Vessels Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1607 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
12N-500-1Alternative Rules for Standard Supports for Class 1, 2, 3, andMC, Section III, Division 11/98E(1) The requirements of NF-3330, "High Cycle FatigueDesign for Class 1," must be met for Class 1 StandardSupports for fatigue consideration.


(2) The requirements of NF-3225, "Design of Bolting," andNF-3324.6, "Webs, Flanges, and Stiffeners," must be metfor bolted joints.N-626Use of Plastic Analysis for the Design of Type B ContainmentComponents for Nuclear Material Transportation Casks, Section III, Division 35/98E(1) For the acceptability of a design by analysis, ParagraphWB-3211, "Requirements for Acceptability," of Section III,Division 3, Subsection WB, "Class TP (Type B)Containment," Subparagraphs (a) through (d) must be applied.
11/4/74
1618 Material for Core Support Structures, Section III, Subsection NG
(1) Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition.


(2) There is a typographical error in the title of Paragraph (a)(2) of the Code Case.  Paragraph WB-3277 does not exist.  Paragraph WB-3227, "Applications of InelasticAnalysis Procedures," of Section III, Division 3, SubsectionWB, "Class TP (Type B) Containment," is to be used.(3) The first paragraph of WB-3324, "Design for LocalPuncture Associated with a Hypothetical Accident Condition," of Section III, Division 3, Subsection WB, "ClassTP (Type B) Containment," must be applied.  The secondparagraph of WB-3324 may be applied.  In lieu of the third paragraph of WB-3324, the following may be applied:
(2) Use of alloy ASTM A-564 Grade 631 is not acceptable on a generic basis.
"Inlieu of the application of the equation for outer shell thickness (treq) the response of the containment boundary topuncture test loadings may be evaluated using plastic analysis according to the rules in Appendix F, "Rules forEvaluation of Service Loadings with Level D Service Limits."3. ANNULLED UNCONDITIONALLY APPROVED SECTION III CODE CASESThe Code Cases listed in the table below were previously unconditionallyapproved by the NRC and have been annulled by the ASME.  The ASME issues Section III Code Cases quarterly in supplements to a specific edition, i.e., a new edition of Section III is published every three years, and supplements are published quarterly.


Hence, there are 12 supplements to each edition.  Column 3 of the table lists the ASME
3/3/75
annulment date.


13TABLE 3 - ANNULLED UNCONDITIONALLY APPROVED SECTION III CODE CASESCODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATEN-1-7(1332-7)Requirements for Steel Forgings, Section III, Division 17/1/82N-2(1334-3)Requirements for Corrosion-Resisting Steel Bars and Shapes,Section III1/1/81N-3-10(1335-10)Requirements for Bolting Materials, Section III9/16/84N-5-1Nickel Chromium Age Hardenable Alloys (Alloy X750), SectionIII, Division 1, Classes 1, 2, 3, MC, and CS12/13/85N-6(1345-2)Requirements for Nickel-Molybdenum-Chromium-Iron Alloys,Section III3/1/79N-9-4(1395-4)SA-508, Class 2 Forgings with Modified Manganese Content,Section III7/1/82N-10(1407-3)Time of Examination for Classes, 1, 2, and 3, Section III
RG 1.84, Rev. 39, Page 48 CODE CASE
Vessels9/17/87N-15(1456-2)Substitution of Ultrasonic Examination for ProgressivePenetrant or Magnetic Particle Examination of Partial Penetration and Oblique Nozzle Attachment Welds, Section III3/1/79N-17(1474-1)Integrally Finned Tubes for Section III1/21/91N-22(1498-1)SA-508-Class 2 and 3, Minimum Tempering Temperature,Section III7/1/82N-24(1516-2)Welding of Seats or Minor Internal Permanent Attachments inValves for Section III Applications1/1/80N-26(1527)Integrally Finned Tubes, Section III1/21/91N-30-1(1539-1)Metal Bellows and Metal Diaphragm Stem Sealed Valves,Section III, Division 1, Classes 1, 2, and 31/1/81N-32-3(1541-3)Hydrostatic Testing of Embedded Class 2 and Class 3 Pipingfor Section III, Division 1 Construction7/1/79N-33(1542-1)Type 403 Forgings or Bars for Bolting Material, Section III1/21/85N-35-1(1552-1)Design by Analysis of Section III, Class 1 Valves7/1/79 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 14N-37-3
NUMBER
(1557-3)Steel Products Refined by Secondary Remelting, Section IIIand VIII, Division 1 and 27/1/82N-41(1571)Additional Material for SA-234 Carbon Steel Fittings, Section III1/21/85N-43(1578)SB-167 Nickel-Chromium-Iron (Alloy 600) Pipe or Tube,Section III7/1/82N-46(1588)Electro-Etching of Section III Code Symbols3/19/82N-47-33Class 1 Components in Elevated Temperature Service,Section III, Division 17/1/96N-48-2Fabrication and Installation of Elevated TemperatureComponents, Section III, Division 17/1/96N-49-4Examination of Elevated Temperature Nuclear Components,Section III, Class 17/1/96N-50-1Testing of Elevated Temperature Components, Section III,Division 1, Class 17/1/96N-51-2Protection Against Overpressure of Elevated TemperatureComponents, Section III, Division 1, Class 17/1/96N-55-1(1609)Inertia and Continuous Drive Friction Welding, Section III, Division 14/5/87N-56(1612)Use of Type 308 Stainless Steel Rod and Bar for Section III,Class 1, 2, 3, and CS Construction7/1/78N-61(1620)Stress Category for Partial Penetration Welded Penetrations,Section III, Class Construction1/8/82N-65-1(1626-1)Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings,Section I and III1/21/85N-66-1(1630-1)External Pressure Charts for High Yield Strength CarbonSteels and Low alloy Steels, (Yield Strength above 38 Ksi to 60
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
Ksi Inclusive) For Section III, Class 1, 2, 3, and MC12/5/87N-68(1634-2)Use of SB-359 for Section III, Division, 1, Class 3 Construction7/1/78N-77(1660)Overpressure Protection Under Emergency OperatingConditions for Section III, Class 17/1/77N-81(1665)Pressure-Temperature Ratings for Class 1 Valves Made from 5Cr-1/2 Mo, Section III7/1/78 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 15N-82
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
(1677)Clarification of Flange Design Loads, Section III, Class 1, 2, and 33/1/79N-84(1681-1)Organizations Accepting Overall Responsibility for Section IIIConstruction3/1/79N-90(1692)Rules for Design of Welded Class 1 Pumps7/1/78N-94(1700)Determination of Capacities of Liquid Relief Valves, Section III,Division 1, Class 1, 2, and 33/19/82N-95-2(1701-2)Determination of Capacities of Vacuum Relief Valves, SectionIII, Division 1, Classes 2, 3, and MC and Division 2 Concrete Containments7/9/82N-96-1(1702-1)Flanged Valves Larger than 24 inches for Section III, Division1, Class 1, 2, and 3 Construction1/1/80N-101(1712)Nameplates and Stamping for Section III, Division 1, Class 1,2, 3 and MC Construction as Referenced in NA-83003/1/79N-102-2Postweld Heat Treatment of P-1 Material, Section III, Class MC6/30/84N-107-1(1722-1)Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division 11/8/82N-108(1724)Deviation from the Specified Silicon Ranges in ASME MaterialSpecifications, Section III, Division 1, and VIII, Division 1 and 27/1/78N-109(1726)Refinement of Low Alloy Steel Heat Affected Zone UnderOverlay Cladding, Section III, Division 1, Class 1 Components3/1/79N-111(1729)Minimum Edge Distance-Bolting for Section III, Division 1,Class 1, 2, and 3 and MC Construction of Component Supports3/1/79N-114(1732)Hardsurfaced Valves with Inlet Connections less than 2-in.Nominal Pipe Size for Section III, Division 1, Class 1 and 2 Construction1/1/79N-115(1733)Evaluation of Safe Shut Down Earthquake Loadings forSection III, Division 1, Class MC Containment Vessels1/1/78N-119-4(1739-4)
DATE
N-119-6Pump Internal Items, Section III, Division 1, Class 1, 2, and 312/1/833/14/94N-121(1744)Carbon Steel Pipe Flanges Larger than 24 in.,Section III, Division 1, Class 2 and 3 Construction3/1/79 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 16N-123
1618-1 Material for Core Support Structures, Section III, Subsection NG
(1746)Leak Testing of Seal Welds, Section III, Division 1, Class 1, 2,and 3 Construction3/1/79N-124(1747)Requirements for Martensitic Stainless Forgings with 13%Chromium and 4% Nickel, Section III, Division 17/13/87N-125(1748)Low Carbon Austenitic Stainless Steel Pipe Welded With FillerMetal, Section III, Division 1, Construction7/1/78N-126(1754)Hard Surfacing by the Spray-Fuse Method, Section III, Class 1,2, and 3 Construction7/1/88N-127(1755-1)Alternative Rules for Examination of Welds in Piping, SectionIII, Class 1 and 2 Construction2/20/92N-139Testing of Electroslag Wire and Flux for Class 1, 2, 3, MC, andCS Construction, Section III, Division 11/1/79N-140(1772)Use of SA-453 Bolts in Service Below 800F Without StressRupture Tests, Section III, Division 112/31/85N-142-1(1774-1)Minimum Wall Thickness for Class 2 and 3 Valves, Section III, Division 11/1/80N-147(1781)Use of Modified SA-487 Grade CA6NM, Section III, Division 1,Class 1, 2, 3, MC or CS7/1/78N-148(1782)Use of Copper-Nickel Alloy 962 for Castings, Section III,Division 1, Class 3 Construction6/30/83N-154(1791)Projection Resistance Welding of Valve Seats, Section III,Division 1, Class 1, 2and 3 Valves1/14/80N-156(1793)Structural Steel Rolled Shapes, Section III, Division I, Class 2,3, and MC2/14/86N-157(1794)Use of Seamless Al-Br, Alloy CDA 614 Pipe, Section III,Division 1, Class 31/7/83N-158(1795)Examination of Weld Repairs in Forgings, Section III, Division1, Class 1, 2, 3, MC and CS7/1/78N-159(1796)Body Neck Thickness Determination for Valves with InletConnections 4-Inch Nominal Pipe Size and Smaller, Section III,
Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition.
Division 1, Class 1, 2, and 37/1/78N-174(1812)Size of Fillet Welds for Socket Welding of Piping, Section III, Division 11/1/81N-176-1(1819-1)Use of Type XM-19 for Construction, Section III, Division 1,Class 1, 2, and 38/25/83 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 17N-177
(1820)Alternative Ultrasonic Examination Technique, Section III, Division 11/1/84N-178Use of ASTM B271, CDA 954, Alloy 9C for Class 3Construction, Section III, Division 11/1/80N-179Openings in Valves for Section III, Division 1, Class 1, 2 and 3Construction7/11/80N-180Examination of Springs for Class 1 Component StandardsSupports, Section III, Division 17/1/78N-181Steel Castings Refined by the Argon Decarburization Process,Section III, Division 1, Construction7/11/80N-182Alternate Rules for Procedure Qualification Base MaterialOrientation, Section III, Division 1, Class 2 and 3 Construction7/1/81N-183Use of Modified SA-182 Grade F22 for Section III, Division 1,Class 1, 2 and 3 Construction1/1/80N-184Roll Threading of SA-453 Bolting for Section III,Division 1, Class 1, 2, 3 or CS Construction7/1/79N-188-1Use of Welded Ni-Fe-Cr-Mo-Cu (Alloy 825) and Ni-Cr-Mo-Cb(Alloy 625) Tubing, Section III, Division 1, Class 2 and 38/14/96N-189Primary Membrane Plus Primary Bending Stress IntensityLimits for Other Than Solid Rectangular Sections for Section III, Division 1, Class MC Construction7/1/79N-190Use of SA-455 for Class 3 Components, Section III, Division 17/1/78N-193Use of SB-61 and SB-62 Bronze for Section III,Division 1, Class 3 Flange and Socket Weld End Valves11/21/80N-196-1Exemption from the Shakedown Requirements When PlasticAnalysis Is Performed for Section III, Division 1, Class 1 and CS Construction7/1/92N-204Use of Modified SA-508, Class 3, and SA-541, Class 3 forSection III, Division 1, Class 1, 2, and 3 Components1/1/81N-206Use of ASTM B151-75 Copper-Nickel Alloy 706 Rod and Barfor Section III, Division 1, Class 3 Construction6/30/83N-207-1Use of Modified SA-479 Type XM-19 for Section III, Division 1,Class 1, 2, 3, or CS Construction1/21/85N-212(1693)Welding Procedure Qualification of Dissimilar Metal WeldsWhen "Buttering" with Alloy Weld Metal and Heat Treatment May Be Involved, Section III, Division 1, and Section IX.1/1/81 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 18N-214-2Use of SA-351 Grade CN7M, for Valves, Section III, Division 112/31/83N-215Integrally Finned Titanium Tubes, Section III, Division 1, Class3 Construction5/15/81N-217-1Postweld Heat Treatment of Weld Deposit Cladding onClasses 1, 2, 3, MC, and CS Items, Section III,
Division 12/23/87N-220Code Effective Date for Component Supports,Section III, Division 17/13/81N-223Requirements for Stainless Steel Precipitation Hardening,Section III, Division 1, Class MC11/20/81N-224-1Use of ASTM A500 Grade B and ASTM A501 StructuralTubing for Welded Attachments for Section III, Class 2, 3, and


MC4/5/90N-225Certification and Identification of Material for ComponentSupports, Section III, Division 11/1/81N-226Temporary Attachment of Thermocouples, Section III, Division1, Class 1, 2 and 3 Component Supports1/1/80N-227Examination of Repair Welds, Section III, Class 2 and 3 Tanks7/9/82N-228Alternate Rules for Sequence of Completion of Code DataReport Forms and Stamping for Section III,
3/1/76
Class 1, 2, 3 and MC Construction3/19/82N-229Alternate Rules for Fabrication Welding SB-148 Alloy CDA 954for Section III, Division 1, Class 3 Construction1/21/88N-231Alternate Methods for Leak Detection in the Attachment Weldsof Leak Chase Channels, Section III, Division 2, Class CC7/1/92N-233Alternate Rules for PWHT of P-No. 6, Group 4 Material forSection III, Division 1, Class 3 Construction9/17/87N-237-2Hydrostatic Testing of Internal Piping, Section III, Division 1, Classes 2 and 37/1/88N-240Hydrostatic Testing of Open Ended Piping, Section III, Division 17/1/97N-241Hydrostatic Testing of Piping, Section III, Division 17/1/97N-245Use of ASTM B61-76 and B62-76 Copper Alloy Castings forSection III, Division 1, Class 3 Construction7/17/85 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 19N-246-2SB-169 Alloy C61400, Section III, Division 1, Class 3Construction 7/27/95N-247Certified Design Report Summary for Component StandardSupports, Section III, Division 1, Class 1, 2, 3 and MC4/30/93N-248Alternative Reference Radiographs, Section III, Division 1,Classes 1, 2, 3, MC, and CS Construction7/1/80N-259Ni-Cu-Al Bolting Material SB 164 Modified, Section III,Division 1, Class 31/1/84N-261Weld Procedure Qualification for Materials with ImpactRequirements for Section III, Division 1, Class 3 Construction12/13/82N-262Electric Resistance Spot Welding for Structural Use inComponent Supports, Section III, Division 17/27/91N-265-1Modified SA-487 Castings, Section III, Division 1, Class 18/14/97N-267Double-Wall Radiography, Section III, Division 1, Class 1 and 27/1/81N-271Simplified Method for Analyzing Flat Face Flanges with Metalto Metal Contact Outside the Bolt Circle for Section III, Class 2,
1626 Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings, Section I, Section III, and Section VIII, Division 1 and 2  
3, and MC Construction2/14/86N-272Compiling Data Report Forms, Section III, Division 11/1/82N-276Welding of SA-358 Pipe, Section III, Division 12/14/86N-277Use of Type XM-19 Austenitic Stainless Steel for Section III,Division 1, Class MC Construction9/17/80N-280Alternate Rules for Examination of Welds in Section III, Class 3Storage Tanks7/1/81N-281Welding Operator Performance Qualification, Section III, Division 17/1/81N-282Nameplates for Valves, Section III, Division 1, Class 1, 2, and3 Construction7/30/89N-294SB-148 Alloys 952 and 954, and SB-62 Alloy 836 Fittings,Section III, Division 1, Class 27/27/95N-295NCA-1140, Materials, Section III, Division 16/30/82N-296Welding Material, Section III, Division 1 Construction12/1/83N-298Examination of Component Supports, Section III, Division 1,Class 1, 2, 3, and MC12/1/83 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 20N-299-1Use of Nickel-Chromium-Molybdenum-Columbium Alloy 625Forgings, Section III, Division 1, Class 2 and Class 3 Components2/23/87N-300Pressure-Temperature Ratings, Hydrostatic Tests, andMinimum Wall Thickness of Valves, Section III,
1/8/79
Division 1, Class 112/1/83N-302Tack Welding, Section III, Division 1, Construction11/28/83N-309-1Identification of Materials for Component Supports, Section III, Division 17/1/95N-313Alternative Rules for Half-Coupling Branch Connections,Section III, Division 1, Class 27/1/96N-316Alternative Rules for Fillet Weld Dimensions for SocketWelding Fittings, Section III, Division 1, Class 1, 2, and 38/14/93N-317ASTM A276 Bar, Section III, Division7/1/82N-320Alternate PWHT for SA-487, Grade CA6NM, Section III, Division 112/31/83N-321-1Use of Modified SA-249, Grade TP 304, Section III, Division 1, Class 112/5/88N-324Qualification of Authorized Nuclear Inspector Supervisor(Concrete) and Authorized Nuclear Inspector (Concrete),
1634
Section III, Division 2, Classes CB and CC7/27/95N-328Thermit Brazing or Welding of Nonstructural Attachments,Section III, Division 19/17/87N-336Examination of Welds Inaccessible During Pressure Test,Section III, Division 1, Class MC6/30/83N-337-1Use of ASTM B 525-70 Grade II, Type II, Sintered AusteniticStainless Steel for Classes 2, 3, and MC Component Standard Supports, Section III, Division 13/14/94N-339Examination of Ends of Fillet Welds, Section III,Division 1, Classes 1, 2, and MC9/17/84N-341Certification of Level III NDE Examiner, Section III, Division 1 and 27/1/88N-342Use of SA-249 and SA-312 Type 317 Stainless Steel, SectionIII, Division 1, Classes 1, 2, and 34/2/85N-346Explosive Welding, Section III, Division 16/30/86 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 21N-347Continuous Electric Resistance Seam Welding ofP-No. 8 Materials for Component Supports, Section III,
1634-1 Use of SB-359 for Section III, Class 3 Construction
Division 112/13/85N-349Pressure Testing Piping Systems, Section III, Division 1, Classes 2 and 312/31/85N-352-1Use of SA-638 Grade 660 Forgings and Bars Below 700FWithout Stress Rupture Tests, Section III, Division 16/30/86N-353Marking of SA-354 Grade BD Bolting, Section III, Division 19/5/88N-354-1Subcontracted Service, Section III, Division 28/14/94N-355Calibration Block for Angle Beam Ultrasonic Examination ofLarge Fittings in Accordance with Appendix III-34108/9/96N-357Certification of Material for Component Supports, Section III,Division 1, Subsection NF7/1/88N-359Weld Connection for Coaxial Cylinders, Section III, Division 1, Class 112/31/84N-362-2Pressure Testing of Containment Items, Section III, Division 1,Classes 1, 2, and MC7/1/88N-367SA-372 Type V, Grade 1, Class B, Section III, Division 12/19/89N-368Pressure Testing of Pump Discharge Piping, Section III,Division 1, Classes 2 and 37/1/95N-370-2Modified SA-705 Type XM-13 Forgings, Section III, Division 18/14/97N-371-112Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals,Section III, Division 17/18/88N-372SB-163 Ni-Fe-Cr-Mo-Cu Alloy 825 (UNS N08825) Tubing,Section III, Division 112/31/83N-376Pressure Testing of Embedded Class 2 and 3 Piping, SectionIII, Division 17/30/86N-377Effective Throat Thickness of Partial Penetration GrooveWelds, Section III, Division 1, Classes 1, 2, and 312/31/83N-378Examination of Piping Support Material, Section III, Division 1, Class 110/28/86N-379-1 Bimetallic Tubing, Section III, Division 1, Class 17/18/91 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 22N-384-1Use of Prepackaged General Purpose Cement Grouts, EpoxyGrouts, and Epoxy Bonding, Section III, Division 2, Class CC7/27/91N-388Component Support Bolting, Section III, Division 1, Classes 2,3, and MC2/23/87N-393Repair Welding Structural Steel Bolted Shapes and Plates forComponent Supports, Section III, Division 17/27/95N-403Reassembly of Subsection NF Component and PipingSupports, Section III, Division 17/1/95N-410Certified Relieving Capacities of Pressure Relief Valves HavingSet Pressure of 3 psig up to but Not including 15 psig Installed for Overpressure Protection of Compressible Fluid Systems, Section III, Division 1, Classes 2 and 33/14/00N-412Alternative Rules for Witnessing the Piping System PressureTests of Classes 1, 2, and 3 Piping Systems, Section III,
8/12/74
Division 14/15/91N-413Minimum Size of Fillet Welds for Subsection NF Linear TypeSupports, Section III, Division 12/14/88N-414Tack Welds for Class 1, 2, 3 and MC Components and PipingSupports, Section III, Division 12/20/92N-418-1Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028and UNS N08904) Tubing, Section III, Division 1, Classes 2
8/13/76
1644
1644-1  
1644-2  
1644-3 Additional Materials for Component Supports, Section III, Subsection NF,  
Class 1, 2, 3, and MC Construction The maximum measured UTS of the component support material should not exceed 170 ksi.


and 37/27/95N-420Linear Energy Absorbing Supports for Subsection NF, Classes1, 2, and 3 Construction1/1/99N-421Brazing Using a Radiant Energy Source, Section III, Division 16/30/86N-430Alternative Requirements for Welding Workmanship and VisualAcceptance Criteria for Class 1, 2, 3, and MC Linear-Type and Standard Supports7/1/93N-433Non-Threaded Fasteners for Section III, Division 1, Class 1, 2,and 3 Components and Piping Supports12/16/95N-438-4UNS N08367 Material, Section III, Division 1, Class 2 and 3Construction7/1/98N-4421977 Addendum to ANSI/ASME PTC 25.3-1976, Safety andSafety Relief Valves, Class 1, 2, 3, and MC,
4/28/75
Section III, Division 13/8/92 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 23N-443-2High Yield Strength Cr-Mo Steel, Class 1 Components, SectionIII, Division 11/1/01N-451Alternative Rules for Analysis of Piping Under SeismicLoading, Class 1, Section III, Division 18/14/96N-459SA-508 Basic Oxygen-Ladle Furnace Process for CodeConstruction, Section III, Division 13/14/94N-462Alternative Rules for Analysis of Piping Products UnderSeismic Loading, Class 2 and 3 Piping Systems, Section III, Division 15/24/96N-466-1Modified 9Cr-1Mo Material, Section III, Division 1, Classes 1,2, and 38/14/97N-468Alternative Method of Earthquake Description for Class 2 and3 Piping of Low Seismicity Sites, Section III, Division 111/92N-470Class MC Material Requirements [NE-2121(c)], Section III, Division 13/8/92N-474-2Design Stress Intensities and Yield Strength Values for UNSN06690 With a Minimum Specified Yield Strength of 35 ksi, Class 1 Components, Section III, Division 11/1/00N-475Materials in Inventory, Section III, Division 112/11/92N-476Class 1, 2, 3, and MC Linear Component Supports - DesignCriteria for Single Angle Members, Section III, Division 1, Subsection NF7/1/96N-482Direct Quenched Stainless Bar, ASTM A 479-88b,Section III, Division 13/5/93N-484-1Real Time Radioscopic Examination of Welds, Section III, Division 112/16/94N-492-1Grade 9 Titanium Alloy Tubing, Section III, Division 1, Class 1,2, and 31/1/00N-497-1Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials,Section III, Division 1, Class 2 and 3 Construction1/1/99N-501Alternative Rules for NCA-3800, 1990 Addenda,Section III, Division 112/31/93N-502SA-268, Grade 26-3-3 (UNS S44660), Section III, Classes 2 and 31/1/00N-507Identification of Welders, Section III, Division 27/27/95 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 24N-540Guidance on Implementation of NCA-3800 Revisions in 1994Addenda, Section III, Division 16/30/98N-549Stamping and Flow Certification of Rupture Disk Devices,Classes 2 and 3, Section III, Division 13/19/99N-551Alternative Methods of Analysis, NC/ND-3673.1, Class 2 and 3Applications, Section III, Division 18/14/97N-559SA-203, Grade E (Plate) and SA-350, Grade LF3 (Forging),3.5% Ni Nominal Composition Used in Class 1 Construction, Section III, Division 15/24/991141-7Foreign Produced Steel7/23/761434-1Postweld Heat Treatment of SA-487 Class 8N Steel Castings,Section III1/1/781461-1Electron Beam Welding, Section I, III, and VIII, Division 1 and 22/16/771470-2External Pressure Charts for High-Strength Carbon Steels andfor Low-Alloy Steels, Section VIII, Division 1 and 2, and Section III11/4/741471-1Vacuum Electron Beam Welding of Tube Sheet Joints,Section III1/1/781475-1Ferritic-Austenitic Stainless Steel Seamless Tubes for SectionIII, Class 2 and 3 Construction7/1/751477-1Use of 1970 Addenda of ANSI B31.7, Section III1/1/781494-1Weld Procedure Qualification Test, Section III1/1/78 1506Stress Intensification Factors, Section III, Class 2 and 3 Piping1/1/78 1515Ultrasonic Examination of Ring Forgings for Shell Sections,Section III, Class 1 Vessels7/1/77 1529Materials for Instrument Line Fittings, Section III7/1/73 1531Electrical Penetrations, Special Alloys for ElectricalPenetration Seals, Section III3/21/77 1532Section III, Class 3 Components Made of 8 Percent and 9Percent Nickel Steel1/1/78 1533Pressure Temperature Ratings of SA-351 Grades CF8A, CF3,and CF3M, Section III7/1/751535-2Hydrostatic Testing of Section III, Class 1 Valves3/21/77 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 25 1536Closing Seam for Electrical Penetrations for Section III, Class2, 3, and MC7/1/771553-1Upset Heading and Roll Threading of SA-453 for Bolting inSection III1/1/761555-1Certification of Safety Relief Valves, Section III, Division 11/1/78 1567Testing Lots of Carbon and Low Alloy Steel CoveredElectrodes, Section III1/1/78 1568Testing Lots of Flux Cored and Fabricated Carbon and LowAlloy Steel Welded Electrodes, Section III1/1/78 1573Vacuum Relief Valves, Section III1/1/78 1574Hydrostatic Test Pressure for Safety Relief Valves, Section III12/31/741580-1Buttwelded Alignment Tolerance and Acceptable Slopes forConcentric Centerlines for Section III, Class 1, 2, and 3 Construction1/1/78 1581Power-Operated Pressure Relief Valves, Section III3/1/79 1583Use of 80-40 Carbon Steel Castings, Section III3/21/77 1587SA-508 Class 3 Forgings with 0.4/1.0 Ni for Section III and VIII,Division 2 Construction12/31/75 1590Chemical Analysis Variations, Section III Construction3/21/77 1601Limits of Reinforcement for Two-Thirds Area, Section III, Class 17/1/741602-1Use of SB-42 Alloy 122, SB-111 Alloys 122, 715 and 706 andSB-466 Alloys 706 and 715, Section III, Class 2 and 3 Components12/31/74 1603Toughness Tests When Cross-Section Limits Orientation andLocation of Specimens7/1/74 1605Cr-Ni-Mo-V Bolting Material for Section III, Class 1Components3/17/801608-1Use of ASME SB-265, SB-337, SB-338, and SB-381, Grades1, 2, 3, and 7 Unalloyed Titanium and ASTM B-363 Titanium Welding Fittings, Section III, Class 2 and 3 Components3/21/77 1613Use of SA-372 Class IV Forgings, Section III Construction1/1/78 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 26 1614Hydrostatic Testing of Piping Prior To or Following theInstallation of Spray Nozzles for Section III, Classes 1, 2, and
6/30/75
3 Piping Systems1/1/79 1615Use of A587-73, Section III, Class 3 Construction1/1/78 1616Ultrasonic Examination of Seamless Austenitic Steel Pipe,Section III, Class 1 Construction7/1/75 1622PWHT of Repair Welds in Carbon Steel Castings, Section III,Class 1, 2, and 31/1/76 1623Design by Analysis for Section III, Class 1 Sleeve-Coupled andOther Patented Piping Joints3/1/79 1625Repair of Section III Class 2 and 3 Tanks12/31/74 1633Brazing of Seats to Class 1, 2, and 3 Valve Body or Bonnets,Section III1/1/78 1637Effective Date for Compliance with NA-3700 ofSection III1/1/75 1645Use of DeLong Diagram for Calculating the Delta FerriteContent of Welds in Section III, Class 1, 2, and CS
11/3/75  
Construction1/1/76 1648SA-537 Plates for Section III, Class 1, 2, 3, and MCComponents7/1/76 1649Modified SA-453-GR 660 for Class 1, 2, 3, and CSConstruction1/1/76 1650Use of SA-414 Grade C for Class 2 and 3 Components,Section III, Division 112/31/74 1651Interim Requirements for Certification of Component Supports,Section III, Subsection NF3/1/79 1657Stress Criteria for Class 2 and 3 Atmospheric and LowPressure (0-15 psig) Steel Storage Tanks7/1/77 1659Interconnection of Two Piping Systems for Section III, Class 1,2, and 3 Construction7/1/77 1661Postweld Heat Treatment P-No.1 Materials for Section III, Class 1 Vessels1/1/78 1662Shop Assembly of Components, Appurtenances and PipingSubassemblies for Section III, Class 1, 2, 3, and MC
3/1/76  
Construction1/1/78 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 27 1664Use of Cr-Ni-Fe-Mo-Cu-Cb Stabilized Alloy Cb-3 for Section IIIClass 2 and 3 Construction3/21/77 1666Use of SB-12, Alloy 122 for Class 2 and 3 Construction7/1/751682-1Alternate Rules for Material Manufacturers and Suppliers,Section III, Subarticle NA-370012/31/75 1672Nuclear Valves for Section III, Division 1, Class 1, 2, 3Construction3/21/77 1675Tubesheet to Shell or Formed Head Weld Joints, Section III, Class 1 Vessels7/1/76 1676Clarification of Stress Intensities in Curved Pipe or WeldedElbows, Section III7/1/76 1678Butterfly Valves of Circular Cross Section Larger than 24 in.NPS for Section III, Class 2 and 3 Construction1/1/801683-1Bolt Holes for Section III, Class 1, 2, 3 and MC ComponentSupports7/1/76 1684A637 Grade 718 for Bolting Class 1 and 2 Construction1/1/76 1685Furnace Brazing Section III, Class 1, 2, 3 and MC Construction1/1/78 1686Furnace Brazing, Section III, Subsection NF, ComponentSupports1/1/78 1690Stock Materials for Section III Construction, Section III, Division 11/1/77 1691Ultrasonic Examination in Lieu of Radiography of Repair Weldsfor Vessels, Section III, Class 11/1/78 1703Brazing of Copper Alloys, Section III, Class 21/1/78 1706Data Report Forms for Component Supports, Section III, Class1, 2 and 312/31/75 1713Small Material Items, Section III, Division 1, Class 1, 2, 3, CSand MC12/31/75 1718Design of Structural Connections for Linear Type ComponentSupports, Section III, Division 1, Class 1, 2 and 3 and MC7/1/76 1719Single-Welded, Full-Penetration Sidewall Butt Joints inAtmospheric Storage Tanks, Section III, Division 1, Class 27/1/76 CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 28 1728Steel Structural Shapes and Small Material Products forComponents Supports, Section II, Division 1 Construction7/1/77 1740Weld Metal Test, Section III, Class 1, 2, 3, MC and CS7/1/761741-1Interim Rules for the Required Number of Impact Tests forRolled Shapes, Section III, Division 1, Subsection NF,
1644-4
Components Supports1/1/78 1742Use of SB-75 Annealed Copper Alloy 122, Section III, Division1, Class 2 Construction7/1/76 1743Use of SB-98 Cu-SiB Rod CDA651 Section III, Division 1,Class 2 Components7/1/76 1760Maximum Dimensions for Isolated Pores in Welds
1644-5
-Class 1Components, Section III, Division 17/1/77 1765Machining After Hydrostatic Testing Class 2 and 3Construction, Section III, Division 17/1/77 1766Testing Requirements for Welding Materials, Class 1, 2, 3, MCand CS Construction, Section III, Division 17/1/77 1767Examination of Tubular Products Without Filler Metal-Class 1Construction, Section III, Division 11/1/77 1768Permanent Attachments to Containment Vessels
1644-6 Additional Materials for Component Supports and Alternate Design Requirements for Bolted Joints, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC  
-Class MC,Section III, Division 11/1/781769-1Qualification of NDE Level III Personnel, Section III, Division 110/1/77 1773Use of Other Product Forms of Materials for Valves, SectionIII, Division 17/1/77 1775Data Report Forms for Core Support Structures, Class CS,Section III, Division 18/13/79 1777Use of SA-106, Grade C in Class MC Construction, Section III, Division 17/1/77 1787Depth of Weld Repairs for Forgings, Section III, Division 1,Class 1, 2, 3, MC and CS Construction1/1/78 1798Use of ASTM A352-75, Grades LCA and LCC, Section III,Division 1, Class 1, 2, and 31/1/78 1808F-Number Classification of Low Alloy and Carbon Steel BareRod Electrodes, Sections I, II, III, IV, V, VIII, and IX.1/1/78 1810Testing Lots of Carbon Steel Solid, Bare Welding Electrode orWire, Section III, Division 1, Class 1, 2, 3, MC, and CS3/3/80
Construction The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190-ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that  
CODE CASENUMBERTABLE 3ANNULLED UNCONDITIONALLY APPROVEDCODE CASES ANNULMENTDATE 29 1819Use of Type XM-19 for Construction, Section III, Division 1,Class 1, 2, 31/1/784. ANNULLED CONDITIONALLY ACCEPTABLE SECTION III CODE CASESThe annulled Code Cases listed in Table 4 below were conditionally approved bythe NRC.  The ASME issues Section III Code Cases quarterly in supplements to a specific edition, i.e., a new edition of Section III is published every three years, and supplements are published quarterly.  Hence, there are 12 supplements to each edition.TABLE 4 - ANNULLED CONDITIONALLY ACCEPTABLESECTION III CODE CASESCODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
(1) the impact test results for the material meet Code requirements and
CASESANNULMENTDATETITLE / CONDITIONN-11-5(1414-5)High Yield Strength Cr-Mo Steel for Section III, Division 1, Class
(2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
1 Vessels8/29/80The information required to be developed by Note 1 in theCode Case should be provided in each referencing Safety Analysis Report.N-31-1Elastomer Diaphragm Valves, Section III, Division 1, Classes 2 and 37/1/93Each applicant who applies the Code Case should indicatein the referencing Safety Analysis Report that the service life of the elastomer diaphragm should not exceed the manufacturer
's recommended service life.  Thisrecommended service life should not exceed 1/3 of the minimum cycle life as established by the requirements of paragraph 3 of the Code Case.  In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
8/13/76
CASESANNULMENTDATETITLE / CONDITION
3/3/77
30N-32-4Hydrostatic Testing of Embedded Class 2 and Class 3 Pipingfor Section III, Division 1 Construction3/16/84The acceptance of Code Case N-32-4 was based on thefollowing clarification and interpretation.  Code Case N-32-
11/21/77
4 does not replace paragraph NC/ND-6129, "Provisions forEmbedded or Inaccessible Welded Joints in Piping," of theCode.  The intent of the Code Case is to (1) provide additional testing above Code requirements and (2) permit liquid penetrant or magnetic particle testing in place of radiographic testing for Class 3 piping with 3/8" nominal wall thickness or less.
1682 Alternate Rules for Material Manufacturers and Suppliers, Section III,
Subarticle NA-3700
8/11/75
1683 Bolt Holes for Section III, Division 1, Class 1, 2, 3 and MC Component Supports
3/1/76
1689 Alternate PWHT Time and Temperature for SA-182 Grade F22, Section III,
Class 1, 2, 3 and CS
The alternate PWHT should be prequalified along with the applicable welding procedure in accordance with Section IX.


Paragraph (1) contains an additional requirement to the Code.  It was, therefore, acceptable but unnecessary to include in the Code Case.
9/10/76
1695 Brazing, Section III, Class 3
11/3/75
1701 Determination of Capacities of Vacuum Relief Valves, Section III, Class MC
3/20/78
1702 Flanged Valves Larger than 24 Inches for Section III, Class 1, 2 and 3 Construction
7/11/77
1714 Postweld Heat Treatment of P-1 Material, Section III, Class MC
7/11/77
1720
Weld End Preparation for Section III, Division Construction Weld end preparations other than those shown in Figures 1, 2, and 3 of the Code Case are not acceptable on a generic basis. Such alternative end preparations should be treated on a case-by-case basis.


Paragraph (2) is a variation in the volumetric examination technique and was acceptable as written.  Paragraph (3)
3/1/76
contains an additional requirement and is not a relaxation of the Code.  It was, therefore, acceptable but unnecessary to include in the Code Case.N-92(1698)Waiver of Ultrasonic Transfer Method, Section III, V, and VIII, Division 17/13/81The material from which the basic calibration block isfabricated should be of the same product form, alloy, and heat treatment as the material being examined.  Alloys of equivalent P-number grouping may be used for the fabrication of calibration blocks if adjustments to signal height can be made to compensate for sound beam attenuation difference between the calibration block and the material under examination by following the transfer method procedure of T-535.1(d), Article 5, Section V,
1720-1 Weld End Preparation for Section III, Division Construction The acceptance of weld end preparations other than those shown in Figures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.
ASME B&PV Code, 1977 Edition.


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
11/20/78
CASESANNULMENTDATETITLE / CONDITION
31N-100(1711)Pressure Relief Valve Design Rules, Section III, Division 1,Class 1, 2 and 31/1/83The following information should be provided in the SafetyAnalysis Report:
(1) If stress limits are used in excess of those specified for the upset operating condition, it should be demonstrated how the pressure relief function is ensured.  Refer to paragraph 3.1, Section I, of the Case for Class and paragraph 3.2, Section II, of the Case for Class 2 and 3 pressure relief valves.


(2) If Case 1660 is to be used in conjunction with the Case, it should be stated that the stress limits of Case 1660
RG 1.84, Rev. 39, Page 49 CODE CASE
supersede those of paragraph 3.2(b), Section I, of Case
NUMBER
1711.  Functional assurance of (1) above is required in all situations.N-106-2(1720-2)Weld End Preparation for Section III, Division 1 Construction8/14/93The acceptance of weld end preparations other than thoseshown in Figures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.N-110(1727)Alternate Test Fluids, Section III, Division 11/1/79The applicant should provide justification in the referencingSafety Analysis Report for the fluid selected for use in the pressure test.  The information provided should demonstrate that the fluid selected will not have deleterious effects on the material of the pressure boundary and that the fluid may be safely used at the specified temperature and pressure of the test.  When the fluid selected for use is the operating fluid, additional information is not required.
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
1722 Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division 1, and VIII,  
Division 1 and 2  
1/8/79
1741 Interim Rules for the Required Number of Impact Tests for Rolled Shapes, Section III, Division 1, Subsection NF, Component Supports
1/14/77
1755 Alternate Rules for Examination of Welds in Piping, Class 1 and 2 Construction, Section III, Division 1
1/14/77
1759 Material for Internal Pressure Retaining Items for Pressure Relief Valves, Section III, Division 1, Class 1, 2, and 3 Applicants using this Code Case should also use Code Case 1711 for the design of pressure relief valves.


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
5/15/78
CASESANNULMENTDATETITLE / CONDITION
1761 Use of SG-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves
32N-116(1734)Weld Design for Use for Section III, Division 1, Class 1, 2, 3 andMC Construction of Component Supports1/1/78If the configuration of Figure 1 of the Code Case is used forClass 1 and MC components supports, full penetration welds should be used.  The application of the configuration shown in Figures 2 and 3 should be restricted to the welding of cans for spring encapsulation in spring hangers.
1/14/77
1769 Qualification of NDE Level III Personnel, Section III, Division 1
2/16/77
1774 Minimum Wall Thickness for Class 2 and 3 Valves, Section III, Division 1
7/11/77
1780
Hydrostatic Testing and Stamping of Pumps for Class 1 Construction, Section III, Division 1 Each licensing application in which the Code Case is to be used should present information that satisfactorily demonstrates that the subassembly tests adequately simulate the pressure loadings. In addition, the closure fixture for the test subassembly should adequately simulate the rigidity of adjacent subassemblies and also simulate the interface loadings from adjacent subassemblies that would result from a hydrostatic pressure test of a complete pump assembly.


In Figure 3, the length of the leg of the fillet weld adjacent to the plate should be equal to the thickness of the exposed edge of the plate; also, the leg of the fillet weld adjacent to the shell should be equal to the thickness of the exposed end of the shell.N-146-1(1780-1)Hydrostatic Testing and Stamping of Components, Section III,Division 1, Construction1/1/82On a generic basis, the application of the Code Case islimited to pumps and valves.  Application to other components should be treated on a case-by-case basis.
As a minimum, the closure fixture should impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly. Hydrostatic testing should not simulate piping reactor loadings.


Each licensing application in which the Code Case is to be used should contain information showing that, as a minimum the closure fixture will impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly.  A closure fixture for the part being tested that is similar in size and shape to the actual mating part is considered adequate to impose these loads.  It is not intended that piping reaction loadings be simulated in the hydrostatic testing.N-175(1818)Welded Joints in Component Standard Supports, Section III, Division 17/1/79That portion of the unwelded housing that is limited to 90maximum should include a minimum of two sectors that are uniform in length.N-199Intervening Elements, Section III, Division 1, Classes 1, 2, 3and MC Component Construction1/1/81The applicants should provide information in thereferencing Safety Analysis Report that demonstrates that all intervening elements have been designed in compliance with the requirements of the respective design specification.
3/10/78
1783 Qualification of Nondestructive Personnel, Section III, Division 1 The first sentence of Paragraph 1 of the Code Case should be replaced with the following: The certification of the Level III nondestructive examination personnel for the purposes of this Section of the Code shall be the responsibility of the employer of the Level III individual. If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder.


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
1/14/77
CASESANNULMENTDATETITLE / CONDITION
33N-238High Temperature Furnace Brazing of Seat Rings in ValveBodies or Bonnets for Section III, Division 1, Class 1, 2, and 3


Valves1/1/82The furnace brazing process procedure qualification shouldinclude a verification for nonsensitization as given in ASTM
RG 1.84, Rev. 39, Page 50
A 262-70, Practices A or E, or ASTM A 708-74 whenever materials subject to sensitization are to be brazed.


Documentation is required that a nonsensitizing brazing procedure was employed for valves produced to this Case.N-242-1Materials Certification, Section III, Division 1, Classes 1, 2, 3,MC, and CS Construction6/30/84Applicants should identify in their Safety Analysis Reportsthe components and supports for which the Code Case is being applied and should specify the respective paragraphs of the Code Case.N-252Low Energy Capacitive Discharge Welding Method forTemporary or Permanent Attachments to Components and Supports, Section III, Division 1, and XI7/1/82The applicant should indicate in the Safety Analysis Reportthe application, the material, and the material thickness to which the strain gage or thermocouple will be attached by CD welding.N-260-2Weld Repair of SA-182 Type 316 Forgings, Section III, Division1, Classes 1, 2, 3, and MC12/5/88Type 308L welding materials should not be used to repairgrade F 316 N forgings because of the difference in strength levels.N-263Alternate Thread Forms, Series and Fits for ComponentSupports, Section III, Division 13/17/83The following information should be provided in the SafetyAnalysis Report: (1) a description of the application, (2) a need for the use of the Code Case, and (3) a demonstration that support design will withstand maximum conditions of loading with the worst combination of thread tolerance.
==D. IMPLEMENTATION==
The purpose of this section is to provide information to applicants and licensees regarding the NRC
staffs plans for using this regulatory guide. This regulatory guide lists the ASME BPV Code, Section III  
Code Cases that the NRC has approved for use as voluntary alternatives to the mandatory ASME BPV
Code provisions that are incorporated by reference into 50.55a. The requirements addressing implementation of Section III Code Cases are contained in 10 CFR 50.55a(b)(4). An applicants or a licensees voluntary application of an approved Code Case does not constitute backfitting, inasmuch as there is no imposition of a new requirement or new position. No backfitting is intended or approved in connection with the issuance of this guide.


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
RG 1.84, Rev. 39, Page 51 REFERENCES2F3
CASESANNULMENTDATETITLE / CONDITION
34N-274Alternative Rules for Examination of Weld Repairs for SectionIII, Division 1 Construction6/30/86The ultrasonic examination procedures shall be proven byactual demonstration, to the satisfaction of the Authorized Nuclear Inspector, that the procedures are capable of detecting unacceptable cracks according to Section XI
requirements.N-275Repair of Welds, Section III, Division 112/31/83Use of the Code Case is applicable only when the removalof an indication requires that the full weld thickness be removed and, in addition, the backside of the weld assembly joint is not accessible for the removal of examination material.  If an indication is removed and weld-metal layers still remain, it is not acceptable to gouge through the wall in order to qualify for use of the Code Case. Instead, examination of the cavity is required when such an indication has been removed.N-279Use of Torquing as a Locking Device for Section III, Division 1,Class 1, 2, 3, and MC Component Supports7/13/81When torquing or other preloading is used as a lockingdevice and the joint is later unloaded or disassembled, the bolting should be replaced unless it can be demonstrated or proved to the Authorized Nuclear Inspector that the original bolting has not been permanently strained.N-310-1Certification of Bolting Materials, Section III, Division 1, Class 1,2, 3, MC and CS7/1/82Each applicant who applies the Code Case should indicatein the referencing Safety Analysis Report (1) in what way the bolting does not meet NCA-3800 (or NA-3700), (2)
where the bolting will be used in the plant, and (3) how it will be shown that the bolting material properties required by the Equipment Support Design Specification are present in the actual bolting material.N-314Alternate Rules for Thread Engagement, Section III, Division 15/11/84Applicants should identify in their Safety Analysis Report(1) the minimum length of thread engagement and (2) the procedure used to establish thread engagement.


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
1.
CASESANNULMENTDATETITLE / CONDITION
35N-348N-348-1 N-348-2Use of SA-574 Socket Weld Head Cap Screws, Section III, Division 19/7/852/20/89
8/14/93Applicants should justify in their Safety Analysis Reportswhy use of these socket head cap screws will not result in early failure from stress corrosion cracking.N-350Postweld Heat Treatment
-Thickness of Material, Section III, Division 19/5/85Applicants wishing to use this Case for other than P-1materials should demonstrate that the use of this Case will not adversely affect the required material properties.N-383-1Weld Repair of SA-182 Austenitic Forgings, Section III, Division1, Classes 1, 2, and 39/5/85Applicants who apply the provisions of this Case to permitmaterial manufacturers to weld repair austenitic forgings without resolution heat treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.N-397Alternative Rules to the Spectral Broadening Procedures ofN-1226.3 for Classes 1, 2, and 3 Piping, Section III, Division 12/20/87The Code Case is acceptable for specific plant applicationson a case-by-case basis pending revision of Regulatory Guide 1.122, "Development of Floor Design ResponseSpectra for Seismic Design of Floor-Supported Equipment or Components.


"N-398Reporting of Charpy-V Notch Test Results, Section III, Division 12/20/87The Code Case is not acceptable to steam generator orreactor coolant pump supports. Applicants wishing to use this Code should indicate in the Safety Analysis Report the component supports to which the case is applied for review on a case-by-case basis.
American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section III,
Rules for Construction of Nuclear Power Plant Components, Division 1, New York, NY.3F4
2.


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
Code of Federal Regulations (CFR), Domestic Licensing of Production and Utilization Facilities Part 50, Chapter 1, Title 10, Energy.
CASESANNULMENTDATETITLE / CONDITION
36N-404Annealed Alloy UNS N06625 Over UNS N06600 BimetallicTubing, Section III, Division 1, Class 112/11/95The outside layer of the bimetallic tubing should be limitedto a minimum of 5 percent and to a maximum of 40 percent of the wall thickness.  The tolerance on the outside layer of material should not exceed -0.000 to +0.007 inches of the specified design wall thickness.N-411-1Alternative Damping Values for Response Spectra Analysis ofClass 1, 2, and 3 Piping, Section III, Division 15/5/00(1) The Code Case damping should be used completelyand consistently, if used at all.  (For equipment other than piping, the damping values specified in Regulatory Guide
1.61, "Damping Values for Seismic Design of NuclearPower Plants," are to be used).(2) The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been employed.  Such use is to be limited only to response spectral analyses (similar to that used in the study supporting its acceptance, NUREG/CR-3526).
The acceptance of the use with other types of dynamic analyses (e.g., time-history analyses or independent support motion method) is pending further justification.


(3) When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and on-line mounted equipment should be checked.
3.


(4) This Code Case is not appropriate for analyzing the dynamic response of piping systems using supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420).
CFR, Licenses, Certifications, and Approvals for Nuclear Power Plants, Part 52, Chapter 1, Title 10, Energy.
(5) This Code Case is not applicable to piping in which stress corrosion cracking has occurred unless a case- specific evaluation is made and is reviewed by the NRC
staff.


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
4.
CASESANNULMENTDATETITLE / CONDITION
37N-430Alternative Requirements for Welding Workmanship and VisualAcceptance Criteria for Class 1, 2, 3 and MC Linear-Type and Standard Supports, Section III, Division 17/1/93(1) The applicant should demonstrate that the applicablesupports are not subject to cyclic loading in excess of
20,000 cycles; and
(2) The first sentence of 3.0(f)(1) should be replaced with the following:
"For material 3/8 in. and less nominalthickness, undercut depth of 1/32 in. on one side of the member for the full length of the weld, or 1/32 in. on one side for one-half the length of the weld, and 1/16 in. for one-fourth of the length of the weld on the face of a rectangular tube or one-fourth the length of the weld on the same side of the member is acceptable.


"1361-2Socket Welds, Section III3/1/79Code Case 1361-2 was acceptable when used inconnection with Section III, paragraph NB-3356, Fillet Welds.1412-4Modified High Yield Strength Steel for Section III, Division 1, Class 1 Vessels1/1/77The information required to be developed by Note 1 in theCode Case should be provided in each referencing Safety Analysis Report.  The material given in the Inquiry section of the Code Case should be SA-508, Class 4b, instead of SA-508, Class 4.1423-2Wrought Type 304 and 316 with Nitrogen Added, Sections I, III,VIII, Division 1 and 27/1/77Code Case 1423-2 was acceptable subject to compliancewith the recommendations contained in Regulatory Guides
U.S. Nuclear Regulatory Commission (NRC) Regulatory Guide (RG) 1.147, Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1, Washington, DC.
1.31, "Control of Ferrite Content in Stainless Steel WeldMetal," and 1.44, "Control of the Use of SensitizedStainless Steel.


"
5.
CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
CASESANNULMENTDATETITLE / CONDITION
381521-1Use of H-Grades of SA-240, SA-479, SA-336, andSA-358, Section III1/1/78Code Case 1521-1 was acceptable subject to compliancewith the recommendations contained in Regulatory Guides
1.31, "Control of Ferrite Content in Stainless Steel WeldMetal," and 1.44, "Control of the Use of SensitizedStainless Steel.


"1528-3High Strength Steel SA-508, Class 2 and SA-541, Class 2Forgings, Section III, Class 1 Components1/1/78The information required to be developed by Note 1 in theCode Case should be provided in each referencing Safety Analysis Report.
NRC, RG 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code, Washington, DC.


1569Design of Piping for Pressure Relief Valve Station, Section III7/1/79Code Case 1569 was acceptable subject to compliancewith the recommendations contained in Regulatory Guide
6.
1.67, "Installation of Over-pressure Protection Devices.


"1606-1Stress Criteria Section III, Classes 2 and 3 Piping Subject toUpset, Emergency, and Faulted Operating Conditions7/1/77Code Case 1606-1 was acceptable subject to theinterpretation that the stress limit designations of
NRC, RG 1.193, ASME Code Cases Not Approved for Use, Washington, DC.
"Upset,""Emergency," and "Faulted" do not necessarily implyagreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.


These designations should be established and justified in the design specifications.1607-1Stress Criteria for Section III, Classes 2 and 3 VesselsDesigned to NC/NC-3300 Excluding the NC-3200 Alternate7/1/77Code Case 1607-1 was acceptable subject to theinterpretation that the stress limit designations of
7.
"Upset,""Emergency," and "Faulted" do not necessarily implyagreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.


These designations should be established and justified in the design specifications.
NRC, RG 1.136, Design Limits, Loading Combinations, Materials, Construction, and Testing of Concrete Containments, Washington, DC


CODE CASENUMBERTABLE 4ANNULLED CONDITIONALLY ACCEPTABLE CODE
8.
CASESANNULMENTDATETITLE / CONDITION
391635-1Stress Criteria for Section III, Class 2 and 3 Valves Subjected toUpset, Emergency, and Faulted Operating Conditions7/1/77Code Case 1635-1 was acceptable subject to theinterpretation that the stress limit designations of
"Upset,""Emergency," and "Faulted" do not necessarily implyagreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.


These designations should be established and justified in the design specifications.1636-1Stress Criteria for Section III, Class 2 and 3 Valves Subjected toUpset, Emergency, and Faulted Operating Conditions7/1/77Code Case 1636-1 was acceptable subject to theinterpretation that the stress limit designations of
American Society for Testing and Materials International (ASTM) A 262-70, Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels, West Conshohocken, PA.4F5
"Upset,""Emergency," and "Faulted" do not necessarily implyagreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.


These designations should be established and justified in the design specifications.1689-1Alternate PWHT Time and Temperature for SA-182 GradeF-22, SA-387 Grade 22, Class 2, and SA-335 Grade P-22 Section III, Class 1, 2, 3 and CS1/1/78The alternate postweld heat treatment should beprequalified along with the applicable welding procedure in accordance with ASME Section IX.1783-1Qualification of Nondestructive Examination Personnel, SectionIII, Division 11/1/79The first sentence of paragraph (1) should be replaced withthe following:
9.
"The certification of the Level IIInondestructive examination personnel for the purpose of this Section of the Code will be the responsibility of the employer of the Level III individual.  If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder.


"5. CODE CASES SUPERSEDED BY REVISED CODE CASES The Code Cases listed in Table 5 were approved in prior versions of the guide andhave since been superseded by revised Code Cases (on or after July 1, 1974).  The date in Column 3 indicates the date on which the ASME approved the revision to the Code
ASTM A 708-74, Practice for Detection of Susceptibility to Intergranular Corrosion in Severely Sensitized Austenitic Stainless Steels, West Conshohocken, PA.
40Case.  Note: Code Cases listed without conditions were unconditionally approved for useby the NRC.TABLE 5 - SECTION III CODE CASES THAT HAVE BEENSUPERSEDED BY REVISED CODE CASES ON OR AFTER JULY 1, 1974CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATEN-5(1344-5)Nickel-Chromium, Age-Hardenable Alloys (Alloy X750),Section III12/13/82N-7(1358-5)High Yield Strength Steel, Section III, Division 1, Class 1 Vessels12/13/82The information required to be developed by Note 1 in theCode Case should be provided in each referencing Safety Analysis Report.N-20(1484-3)
N-20-1SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) atNickel-Iron-Chromium Alloy 800 at a Specified Minimum Yield Strength of 40.0 Ksi, Section III, Division 1, Class 19/5/8512/7/87N-20-2N-20-3SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) atNickel-Iron-Chromium Alloy 800 at a Specified Minimum Yield Strength of 40.0 Ksi and Cold Worked Alloy 800 at a yield strength of 47.0 Ksi, Section III, Division 1, Class 111/30/882/26/99N-30-1(1539)Metal Bellows and Metal Diaphragm Stem Sealed Valves, SectionIII, Classes 1, 2, and 311/21/77N-31(1540-2)Elastomer Diaphragm Valves, Section III, Class 2 and 37/18/85Each applicant who applies the Code Case should indicate inthe referencing Safety Analysis Report that the service life of the elastomer diaphragm should not exceed the manufacturer
's recommended service life.  Thisrecommended service life should not exceed 1/3 of the minimum cycle life as established by the requirements of paragraph 3 of the Code Case.  In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.N-55(1609-1)Inertia and Continuous Drive Friction Welding, Section I, III, IV,VIII, Division 1 and 2, and IX4/5/84N-60(1618-2)
N-60-1Material for Core Support Structures, Section III, Division 1,Subsection NG5/25/839/17/84Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition.


CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 41N-60-2 N-60-3 N-60-4Material for Core Support Structures, Section III, Division 1,Subsection NG9/5/855/13/91
10. NRC, RG 1.122, Development of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components, Washington, DC.
2/15/94Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition. For SA-479 material, the maximum yield strength should not exceed 90,000 psi in view of the susceptibility of this material to environmental cracking.N-62-2(1621-2)
N-62-3 N-62-4 N-62-5 N-62-6Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 Line Valves7/18/859/5/857/24/8912/11/895/11/94The Code requires that Class 1 and Class 2 valvemanufacturers meet the provisions of NCA 4000, "QualityAssurance," and, in addition, Class 3 valve manufacturersshould also meet the provisions of NCA-4000.N-71-7(1644-7)
N-71-8
(1644-8)Additional Materials for Component Supports, Section III, Division1, Subsection NF, Class 1, 2, 3 and MC Component Supports5/15/781/7/80The maximum measured ultimate tensile strength (UTS) ofthe component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking.  Certain applications may exist where a UTS value of up to 190 Ksi could be considered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that: (1) the impact test results for the material meet Code requirements and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present, and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.N-71-9(1644-9)Additional Materials for Component Supports Fabricated byWelding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports5/11/81In the last sentence of paragraph 5.3, reference should bemade to paragraph 4.5.2.2, "Alternate Atmosphere ExposureTime Periods Established by Test," of the AWS D.1.1 Codefor the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time.


CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 42N-71-10
11. NRC, RG 1.61, Damping Values for Seismic Design of Nuclear Power Plants, Washington, DC.
N-71-11Additional Materials for Component Supports Fabricated byWelding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports6/17/822/14/83The maximum measured ultimate tensile strength (UTS) ofthe component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking.  Certain applications may exist where a UTS value of up to 190 Ksi could be considered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that: (1) the impact test results for the material meet Code requirements and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present, and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.  In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alternate Atmosphere Exposure TimePeriods Established by Test," of the AWS D.1.1 Code for theevidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time.N-71-12Additional Materials for Component Supports Fabricated byWelding, Section III, Division 1, Class 1, 2, 3 and MC2/20/84The maximum measured ultimate tensile strength (UTS) ofthe component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking.  Certain applications may exist where a UTS value of up to 190 Ksi could be considered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that:
(1) the impact test results for the material meet Code requirements and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present, and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.  In the last sentence of paragraph
5.3, reference should be made to paragraph 4.5.2.2,
"Alternate Atmosphere Exposure Time Periods Established CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 43N-71-12 (cont'd)Additional Materials for Component Supports Fabricated byWelding, Section III, Division 1, Class 1, 2, 3 and MC2/20/84by Test," of the AWS D.1.1 Code for the evidence presented toand accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time.  Paragraph 16.2.2 is not acceptable as written and should be replaced with the following:
When not exempted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710 Grade A material, it should be at least 1000F (540C) and should not exceed 1150F (620C)for Class 1 and Class 2 material and 1175F (640C) for Class 3material.  The new holding time at temperature for weld thickness (nominal) should be 30 minutes for
1/2 inch or less,1 hour per inch for thickness over
1/2 inch to 5 inches, and 5hours plus 15 minutes for each additional inch over 5 inches.N-71-13N-71-14 N-71-15 N-71-16 (cont'd)Additional Materials for Subsection NF, Classes 1, 2, 3 and MCComponent Supports Fabricated by Welding, Section III, Division 112/5/8512/16/862/12/9312/31/96The maximum measured ultimate tensile strength (UTS) ofthe component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking.  Certain applications may exist where a UTS value of up to 190 Ksi could be considered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that:
(1) the impact test results for the material meet Code requirements, and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present, and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.  In the last sentence of paragraph
5.3, reference should be made to paragraph 4.5.2.2,
"Alternate Atmosphere Exposure Time Periods Establishedby Test," of the AWS D.1.1 Code for the evidence presentedto and accepted  by the Authorized Inspector concerning exposure of electrodes for longer periods of tim


====e. Paragraph====
3 Publicly available NRC published documents are available electronically through the NRC Library on the NRCs public Web site at http://www.nrc.gov/reading-rm/doc-collections/ and through the NRCs Agencywide Documents Access and Management System (ADAMS) at http://www.nrc.gov/reading-rm/adams.html. The documents can also be viewed online or printed for a fee in the NRCs Public Document Room (PDR) at 11555 Rockville Pike, Rockville, MD. For problems with ADAMS, contact the PDR staff at (301) 415-4737 or (800) 397-4209; fax (301) 415-3548; or e-mail pdr.resource@nrc.gov.
16.2.2 is not acceptable as written and should be replaced with the following: When not exempted by 16.2.1, above, the postweld heat treatment should be performed in accordance with NF-4622 except that for ASTM A-710 Grade A material, it should be at least 1000F (540C) and should not exceed
1150F (620C) for Class 1 and Class 2 material and 1175F(640C) for Class 3 material.


CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 44N-71-13 N-71-14 N-71-15 N-71-16 (cont'd)Additional Materials for Subsection NF, Classes 1, 2, 3 and MCComponent Supports Fabricated by Welding, Section III, Division 112/5/8512/16/862/12/9312/31/96The new holding time at temperature for weld thickness(nominal) should be 30 minutes for
4 Copies of American Society of Mechanical Engineers (ASME) standards may be purchased from ASME, Two Park Avenue, New York, NY 10016-5990; telephone (800) 843-2763. Purchase information is available through the ASME Web-based store at https://www.asme.org/publications-submissions/publishing-information.
1/2 inch or less, 1 hour perinch for thickness over
1/2 inch to 5 inches, and 5 hours plus15 minutes for each additional inch over 5 inches.  The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with Section
5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis.  The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, Class 2, and Class 3 component supports.N-77(1630)External Pressure Charts for High Yield Strength Carbon Steelsand Low Alloy Steels (Yield strength above 38 Ksi to 60 Ksi Inclusive) For Section III, Class 1, 2, 3, and MC; and Section VIII,
Division 1 and 27/10/78N-95-1(1701-1)Determination of Capacities of Vacuum Relief Valves, Section III,Division 1 and 2, Class MC7/9/79N-102-1(1714-2)Postweld Heat Treatment of P-1 Material, Section III, Class MC8/28/78N-119-2(1739-2)
N-119-3
(1739-3 N-119-4
(1739-4)
N-119-5Pump Internal Items, Section III, Division 1, Class 1, 2, and 38/25/8012/1/80
7/18/85N-122Stress Indices for Structural Attachments, Class 1, Section III, Division 17/24/89N-133(1761-1)Use of SB-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves1/14/77N-133-1N-133-2Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 35/19/857/18/85N-154(1791)Projection Resistance Welding of Valve Seats, Section III, Division1, Class 1, 2 and 3 Valves12/5/85N-160(1797)Finned Tubing for Construction, Section III, Division 17/18/85 CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 45N-188Use of Welded Ni-Fe-Cr-Mo-Cu (Alloy 825) and Ni-Cr-Mo-Cb(Alloy 625) Tubing, Section III, Division 1, Class 31/1/78N-192N-192-1Use of Flexible Hose for Section III, Division 1, Class 1, 2, and 3Construction8/30/799/16/81The applicant should indicate system application, design andoperating pressure, and pressure-temperature rating of the flexible hose.  Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC-ND-3649.4(e), are required to be furnished with the application.N-196Exemption from the Shake-down Requirements When PlasticAnalysis is Performed for Section III, Division 1, Class 1 Construction1/8/79N-207Use of Modified SA-479 Type XM-19 for Section III, Division 1,Class 1, 2, or 3 Construction3/19/79N-214N-214-1Use of SA-351, Grade CN7M, for Valves for Section III, Division 1,Construction9/7/825/25/83N-224 Use of ASTM A500 Grade B and ASTM A501 Structural Tubing forWelded Attachments for Section III, Class 2 and 3 Construction5/11/81N-237Hydrostatic Testing of Internal Piping, Section III, Division 19/7/82N-237-1Hydrostatic Testing of Internal Piping, Section III, Division 1, Classes 2 and 35/25/83N-242Materials Certification, Section III, Division 1, Classes 1, 2, 3, MC,and CS Construction4/10/80Applicants should identify the components and supportsrequiring the use of paragraphs 1.0 through 4.0 of the Code Case in their Safety Analysis Reports.N-246Use of SB-169 Alloy CA614, Section III, Division 1, Class 39/7/82N-246-1SB-169, Alloy C 61400, Section III, Division 1, Class 35/25/83N-249Additional Materials for Component Supports Fabricated WithoutWelding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports5/11/81Footnote 2 of the Code Case should apply to all materialslisted in Tables 1, 2, 3, 4, and 5 of the Code Case and should be so indicated on line 5 of the
"Reply."
CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 46N-249-1Additional Materials for Component Supports Fabricated WithoutWelding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports6/17/82Paragraph 7 of the
"Reply" should reference the requirementsof NF-2600 instead of NF-2800.  This is a typographical error in that NF-2800 does not exist.N-249-2N-249-3Additional Materials for Subsection NF Class 1, 2, 3, and MCComponent Supports Fabricated Without Welding, Section III,
Division 12/14/832/20/84N-249-4N-249-5Additional Material for Subsection NF, Classes 1, 2, 3, and MCComponent Supports Fabricated Without Welding, Section III,
Division 19/17/844/8/85The fracture toughness requirements as listed in Code CaseN-249-4 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with Section 5.3.4 of the USNRC
Standard Review Plan (NUREG-0800) or on a case-by-case


basis.N-249-6N-249-7 N-249-8 N-249-9 N-249-10
5 Copies of American Society for Testing and Materials International (ASTM) standards may be purchased from ASTM, 100
N-249-11 N-249-12Additional Material for Subsection NF, Classes 1, 2, 3, and MCComponent Supports Fabricated Without Welding, Section III,
Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959; telephone (610) 832-9585. Purchase information is available through the ASTM Web site at http://www.astm.org.
Division 19/5/8512/5/8512/16/865/6/895/13/91
2/12/93
5/11/94The fracture toughness requirements apply only to pipingsupports and not to Classes 1, 2, and 3 component supports.


The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with Section
.  
5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis.  The following is to be added to paragraph (5) of the: For these cases, it should be demonstrated by the Owner that: (1) the impact test results for the material meet Code requirements, and (2) the material is not subject to stress corrosion cracking by virtue of the fact that: (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.N-260Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1,Classes 1, 2, 3, and MC7/18/85 CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 47N-260-1Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1,Classes 1, 2, 3, and MC12/5/85Type 308 L welding materials should not be used to repairgrade F 316 N forgings because of the difference in strength levels.N-265Modified SA-487 Castings, Section III, Division 1, Class 15/19/85N-299Use of Nickel-Chromium-Molybdenum-Columbium Alloy 625Forgings, Section III, Division 1, Class 2 and Class 3 Components7/18/85N-304N-304-1 N-304-2 N-304-3Use of 20 Cr-25Ni-6Mo (Alloy UNS N08366) Welded Tubes forSection III, Division 1, Classes 2 and 3 Construction7/12/845/19/85
12/5/85
2/23/87N-309Identification of Materials for Component Supports, Section III, Division 15/11/84N-318N-318-1 N-318-2 N-318-3 N-318-4Procedure for Evaluation of the Design of Rectangular CrossSection Attachments on Class 2 or 3 Piping, Section III, Division 12/20/847/12/849/5/8512/11/894/28/94Applicants should identify in their Safety Analysis Report: (1)the method of lug attachment, (2) the piping system involved, and (3) the location in the system where the Case is to be


applied.N-319N-319-1 N-319-2Alternate Procedure for Evaluation of Stresses in Butt WeldElbows in Class 1 Piping, Section III, Division 17/24/898/14/90
RG 1.84, Rev. 39, Page 52
1/17/00N-321Use of Modified SA-249, Type 304, Section III, Division 1, Class 1Construction12/5/85N-337Use of ASTM B 525-70 Grade II, Type II, Sintered AusteniticStainless Steel for Class 2, 3, and MC Component Standard Supports, Section III, Division 17/18/85N-345Attachment of AMS 5382 Alloy 31 Seat Rings by Friction Welding,Section III, Division 1, Classes 1, 2, and 312/13/82N-352Use of SA-638 Grade 660 Forgings and Bars Below 700FWithout Stress Rupture Tests, Section III, Division 17/18/85N-362Alternate Rules for Pressure Testing of Containment Items,Section III, Division 112/13/82N-362-1Pressure Testing of Containment Items, Section III, Division 1,Classes 1, 2, and MC7/12/84 CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 48N-370
12. NUREG/CR-3526, Impact of Changes in Damping and Spectrum Peak Broadening on the Seismic Response of Piping Systems, Washington, DC, March 1984. (ADAMS Accession No.
N-370-1Modified SA-705 Grade XM-13 Forgings, Section III, Division 17/18/8512/5/85N-37112Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals,Section III, Division 17/18/85N-379 Bimetallic Tubing Section III, Division 1, Class 17/18/85N-383Weld Repair of SA-182 Austenitic Forgings, Section III, Division 1,Classes 1, 2, and 37/18/85Applicants who apply the provisions of the Case to permitmaterial manufacturers to weld repair austenitic forgings without resolution heat treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.N-391Procedure for Evaluation of the Design of Hollow Circular CrossSection Welded Attachments on Class 1 Piping, Section III,
Division 17/24/89N-391-1Procedure for Evaluation of the Design of Hollow Circular CrossSection Welded Attachments on Class 1 Piping, Section III,
Division 18/24/95The following typographical errors need to be corrected: 1) Inequation (3) the + sign should be changed to an = sign, and
2) In equation (4) the first + sign should be changed to an =
sign.N-392Procedure for Evaluation of the Design of Hollow Circular CrossSection Welded Attachments on Classes 2 and 3 Piping, Section III, Division 112/11/89N-392-1Procedure for Evaluation of the Design of Hollow Circular CrossSection Welded Attachments on Classes 2 and 3 Piping, Section III, Division 112/11/92Applicants should identify in their Safety Analysis Report: (1)the method of lug attachment, (2) the piping system involved, and (3) the location in the system where the Case is to be


applied.
ML20088A672)


CODE CASENUMBERTABLE 5, CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 49N-392-2Procedure for Evaluation of the Design of Hollow Circular CrossSection Welded Attachments on Classes 2 and 3 Piping, Section III, Division 112/12/94Applicants should identify in their Safety Analysis Report: (1)the method of lug attachment, (2) the piping system involved, and (3) the location in the system where the Case is to be
13. NRC, RG 1.31, Control of Ferrite Content in Stainless Steel Weld Metal, Washington, DC.


applied.N-411Alternative Damping Values for Seismic Analysis of Classes 1, 2,and 3 Piping Sections, Section III, Division 12/20/86(1) The damping values specified may be used in analyzingpiping response for seismic and other dynamic loads being filtered through building structures provided response mode frequencies are limited to 33 Hz and below. Within this range, the Code Case damping should be used completely and consistently, if used at all.  (For equipment other than piping, the damping values specified in Regulatory Guide
14. NRC, RG 1.44, Control of the Use of Sensitized Stainless Steel, Washington, DC.
1.61, "Damping Values for Seismic Design of Nuclear PowerPlants," should be used).(2) The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been employed.  Such use should be limited only to response spectral analyses (similar to that used in the study supporting its acceptance
-Reference NUREG/CR-3526.  Theacceptance of the use with other types of dynamic analyses (e.g., time-history analysis) is pending further justification.


(3) When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and on line mounted equipment should be checked. (4) This Code Case is not appropriate for analyzing the dynamic response of piping systems using supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-
15. NRC, RG 1.67, Installation of Over-Pressure Protection Devices, Washington, DC.
420).  (5) This Code Case is not applicable to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.N-418Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028 andUNS N08904) Tubing, Section III, Division 1, Classes 2 and 37/30/86N-438N-438-1 N-438-2Fe-24.5Ni-21Cr-6.5 Mo-0.2N (Alloy UNS N08367) Seamless andWelded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and
3 Construction, Section III, Division 13/8/893/5/907/27/92N-438-3UNS N08367 Material, Section III, Division 1, Class 2 and 3Construction5/24/96 CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 50N-439Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Forgings, Plate,Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction, Section III, Division 17/10/00N-440Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and3 Construction, Section III, Division 17/10/00N-441N-441-1Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3Construction, Section III, Division 111/25/927/10/00N-443N-443-1High Yield Strength Cr-Mo Steel, Class 1 Components, Section III, Division 13/8/8911/11/99N-453Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNSN08925) Welded Pipe for Class 2 and 3 Construction, Section III,
Division 111/30/88N-453-1Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNSN08925) Seamless and Welded Pipe for Class 2 and 3 Construction, Section III, Division 14/30/92N-453-2Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNSN08925 and N08926) Seamless and Welded Pipe for Class 2 and
3 Construction, Section III, Division 112/12/95N-454Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNSN08925) Wrought Fittings for Class 2 and 3 Construction, Section III, Division 14/30/92N-455Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNSN08925) Forged Flanges and Fittings for Class 2 and 3 Construction, Section III, Division 14/30/92N-466Modified 9Cr-1Mo Material, Section III, Division 1, Classes 1, 2, and 34/30/90N-469Martensitic Stainless Steel for Class 1, 2, and 3 Components,Section III, Division 16/14/00N-474Design Stress Intensities and Yield Strength Values for Alloy 690With a Minimum Yield Strength of 35 ksi, Class 1 Components, Section III, Division 13/5/90N-474-1Design Stress Intensities and Yield Strength Values for UNSN06690 With a Minimum Specified Yield Strength of 35 ksi, Class
1 Components, Section III, Division 112/9/93N-484Real Time Radioscopic Examination of Welds, Section III, Division 112/16/91 CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 51N-492Grade 9 Titanium Alloy Tubing, Section III, Division 1, Class 1, 2, and 35/11/94N-497Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials, Section III,Division 1, Class 2 and 3 Construction12/9/93N-510Borated Stainless Steel for Class CS Core Support Structures andClass 1 Components, Section III, Division 112/12/94N-520Alternative Rules for Renewal of N-type Certificates for Plants Notin Active Construction, Section III, Division 110/26/94N-564-1UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction,Section III, Division 112/31/96N-580Use of Alloy 600 With Columbium Added, Section III, Division 15/20/981332-6Requirements for Steel Forgings, Section III and VIII, Division 11/8/791335-9Requirements for Bolting Materials8/28/781337-91337-10Special Type 403 Modified Forgings or Bars, Section III4/28/755/15/781395-3SA-508, Class 2 Forgings with Modified Manganese Content,Section III or Section VIII, Division 21/8/791407-2Time of Examination for Class 1, 2, and 3, Section III Vessels7/1/741414-31414-4High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels3/1/768/9/77The information required to be developed by Note 1 in the CodeCase should be provided in each referencing Safety Analysis Report.1484-1SB-163 Nickel-Chromium-Iron Tubing (Alloy 600) at a SpecifiedMinimum Yield Strength of 40.0 Ksi, Section III, Class 111/4/741484-2SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at aSpecified Minimum Yield Strength of 40.0 Ksi, Section III, Class 18/13/76 1492Post Weld Heat Treatment, Section I, III and VIII, Division 1 and 23/3/75 1508Allowable Stresses, Design Intensity and/or Yield Strength Values,Section I, III, and VIII, Divisions 1 and 26/30/751516-1Welding of Seats in Valves for Section III Applications8/11/751540-1Elastomer Diaphragm Valves, Section III, Classes 2 and 31/14/77 CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 521541-1Hydrostatic Testing of Embedded Class 2 and Class 3 Piping forSection III Construction9/30/761541-2Hydrostatic Testing of Embedded Class 2 and Class 3 Piping forSection III, Division 1 Construction5/15/78 1552Design by Analysis of Section III, Class 1 Valves8/29/77 1553Upset Heading and Roll Threading of SA-453 for Bolting in Section III3/3/75 1555Certification of Safety Relief Valves on Liquids1/14/771557-2Steel Products Refined by Secondary Remelting1/8/79 1606Stress Criteria for Section III, Class 2 and 3 Piping Subjected toUpset, Emergency, and Faulted Operating Conditions12/16/74Code Case 1606 was acceptable subject to the interpretationthat the stress limit designations of
"Upset," "Emergency,"and "Faulted" do not necessarily imply agreement withspecified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.  These designations should be established and justified in the design specifications.


1607Stress Criteria for Section III, Classes 2 and 3 Vessels Subjectedto Upset, Emergency, and Faulted Operating Conditions11/4/74Code Case 1607 was acceptable subject to the interpretationthat the stress limit designations of  
16. NRC, NUREG-0800, Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition, Washington, DC.
"Upset," "Emergency,"and "Faulted" do not necessarily imply agreement withspecified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.  These designations should be established and justified in the design specifications.


1618Material for Core Support Structures, Section III, Subsection NG3/3/75(a) Welding of age-hardenable alloy SA-453 Grade 660 andSA-637 Grade 688 should be performed when the material is in the solution-treated condition.  (b) Use of alloy ASTM A-
RG 1.84, Rev. 39, Appendix A, Page A-1 APPENDIX A
564 Grade 631 is not acceptable on a generic basis.1618-1Material for Core Support Structures, Section III, Subsection NG3/1/76Welding of age-hardenable alloy SA-453 Grade 660 andSA-637 Grade 688 should be performed when the material is in the solution-treated condition.


CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 53 1626Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings,Section I, Section III, and Section VIII, Division 1 and 21/8/79 16341634-1Use of SB-359 for Section III, Class 3 Construction8/12/748/13/76 16441644-1
SUPPLEMENTS ADDRESSED IN REVISION 39 OF REGULATORY GUIDE 1.84
1644-2
1644-3Additional Materials for Component Supports, Section III,Subsection NF, Class 1, 2, 3, and MC Construction4/28/756/30/75
11/3/753/1/76The maximum measured ultimate tensile strength of thecomponent support material should not exceed 170 Ksi.1644-41644-5
1644-6Additional Materials for Component Supports and Alternate DesignRequirements for Bolted Joints, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Construction8/13/763/3/7711/21/77The maximum measured ultimate tensile strength (UTS) ofthe component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking.  Certain applications may exist where a UTS value of up to 190 Ksi could be considered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that (1) the impact test results for the material meet code requirements, and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.


1682Alternate Rules for Material Manufacturers and Suppliers, SectionIII, Subarticle NA-37008/11/75 1683Bolt Holes for Section III, Division 1, Class 1, 2, 3 and MCComponent Supports3/1/76 1689Alternate PWHT Time and Temperature for SA-182 Grade F22,Section III, Class 1, 2, 3 and CS9/10/76The alternate postweld heat treatment should be prequalifiedalong with the applicable welding procedure in accordance with ASME Section IX.
EDITION
SUPPLEMENT
NUMBER
NUMERICAL LISTING OF SECTION III CODE CASES IN
SUPPLEMENT
2015
0
N-192-35F1, N-4931, N-645-11, N-6461, N-6571, N-852
2015
1 None
2015
2 N-855, N-856
2015
3 N-755-3
2015
4 N-822-3
2015
5 N-155-3, N-213-16F2, N-5581, N-707-17F3, N-7441, N-8281, N-859, N-8618F4, N-8624
2015
6 N-71-20, N-670-11, N-692-1, N-801-2  
2015
7 N-822-4, N-863
2017
0
N-71-20, N-539-1, N-801-3, N-866, N-870, N-8724
2017
1 N-755-4, N-863-1, N-879
2017
2 None
2017
3 None
2017
4 N-659-39F5, N-870-1, N-8815
2017
5 N-721-1, N-883
2017
6 N-249-16, N-510-11, N-7281, N-886, N-887 
2017
7 None
2019
0
N-249-17, N-290-24, N-483-31, N-519-15, N-884, N-891
2019
1 None


1695Brazing, Section III, Class 311/3/75 1701Determination of Capacities of Vacuum Relief Valves, Section III, Class MC3/20/78 CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 54 1702Flanged Valves Larger than 24 inches for Section III, Class 1, 2and 3 Construction7/11/77 1714Postweld Heat Treatment of P-1 Material, Section III, Class MC7/11/77 1720Weld End Preparation for Section III, Division Construction3/1/76Weld end preparations other than those shown in Figures 1,2, and 3 of the Code Case are not acceptable on a generic basis.  Such alternative end preparations should be treated on a case-by-case basis.1720-1Weld End Preparation for Section III, Division Construction11/20/78The acceptance of weld end preparations other than thoseshown in Figures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.
1 Annulled.


1722Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division1, and VIII, Division 1 and 21/8/79 1741Interim Rules for the Required Number of Impact Tests for RolledShapes, Section III, Division 1, Subsection NF, Component Supports1/14/77 1755Alternate Rules for Examination of Welds in Piping, Class 1 and 2Construction, Section III, Division 11/14/77 1759Material for Internal Pressure Retaining Items for Pressure ReliefValves, Section III, Division 1, Class 1, 2, and 35/15/78Applicants using this Case should also use Code Case 1711for the design of pressure relief valves.
2 This is a Division 2 Code Case and is addressed in RG 1.136.


1769Qualification of NDE Level III Personnel, Section III, Division 12/16/77 1774Minimum Wall Thickness for Class 2 and 3 Valves, Section III, Division 17/11/77 1780Hydrostatic Testing and Stamping of Pumps for Class 1Construction, Section III, Division 13/10/78Each licensing application in which the Code Case is to beused should present information that satisfactorily demonstrates that the subassembly tests adequately simulate the pressure loadings.  Also, the closure fixture for the test subassembly should adequately simulate the rigidity of adjacent subassemblies and also simulate the interface loadings from adjacent subassemblies that would result from CODE CASENUMBERTABLE 5,  CODE CASES SUPERSEDED BYREVISED CODE CASESREVISIONDATE 55 1780
3 This is a Division 3 Code Case and is not addressed in this RG.
(continued)Hydrostatic Testing and Stamping of Pumps for Class 1Construction, Section III, Division 13/10/78a hydrostatic pressure test of a complete pump assembly.  Asa minimum, the closure fixture should impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly.  It is not intended that piping reactor loadings be simulated in the hydrostatic testing.


1783Qualification of Nondestructive Personnel, Section III, Division 11/14/77The first sentence of paragraph (1) should be replaced withthe following:
4 This is a Division 5 Code Case and is not addressed in this RG.
"The certification of the Level III nondestructiveexamination personnel for the purposes of this Section of the Code shall be the responsibility of the employer of the Level III individual.  If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder.


"1761Use of SB-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves1/14/77
5 This Code Case is not acceptable for use (See RG 1.193).  
56Appendix ASUPPLEMENTS ADDRESSED IN REVISION 32 TO REGULATORY GUIDE 1.84EDITIONSUPPLEMENTNUMBER BNCS a APPROVALDATE OF CODECASES INSUPPLEMENT
b19924February 12, 199319925April 27, 1993
19926August 9, 1993
19927December 9, 1993
19928February 15, 1994
19929May 11, 1994
199210August 5, 1994
199211December 12, 1994
199212March 14, 1995
19951June 9, 1995
19952August 24, 1995
19953December 12, 1995
19954March 19, 1996
19955May 24, 1996
19956August 9, 1996
19957December 31, 1996
19958March 12, 1997
19959May 26, 1997
199510August 14, 1997
199511December 12, 1997
199512March 2, 1998
19981May 20, 1998
19982July 30, 1998
19983February 15, 1999
19984February 26, 1999 EDITIONSUPPLEMENTNUMBER BNCS a APPROVALDATE OF CODECASES INSUPPLEMENT
b 5719985May 7, 199919986September 24, 1999
19987November 11, 1999
19988January 17, 2000
19989March 28, 2000
199810October 2, 2000
199811December 8, 2000
a  BNCS - ASME Board on Nuclear Codes and Standards b  Publication generally is 3 months after BNCS approval.


1  Except for those Code Cases pertaining to high temperature gas-cooled reactors; Section III, Division 2; liquidmetal; and submerged spent fuel waste casks.
APPENDIX B
NUMERICAL LISTING OF CURRENT SECTION III CODE CASES
AND TABLE WHERE EACH CODE CASE IS LISTED


2 Code Case is not acceptable for use; See Regulatory Guide 1.193.
RG 1.84, Rev. 39, Appendix B, Page B-1 Code Case Number Approval Date Table Where Code Case Is Listed N-4-13
2/12/08 Table 1 N-60-6
12/6/11 Table 1 N-62-7
2/3/03 Table 2 N-71-20
7/17/16 Table 2 N-131-1
2/3/03 Table1 N-133-3
2/3/03 Table 1 N-154-1
2/3/03 Table 1 N-155-3
2/11/16 Table 2 N-205
2/25/02 Table 1 N-213-1
2/11/16 Division 2 N-249-17
4/10/18 Table 1 N-258-2
3/28/01 Division 2 N-284-4
10/8/12 Table 1 N-290-2
12/17/18 Division 5 N-312
3/28/01 Division 2 N-315
2/3/03 Table 1 N-319-3
2/3/03 Table 1 N-351
1/17/00
Table 1 N-369
5/9/03 Table 1 N-373-3
10/8/04 Table 1 N-405-1
2/20/04 Table 1 N-452
5/9/03 Table 1 N-453-3
8/14/01 Table 1 N-454-1
6/17/03 Table 1 N-455-1
7/17/03 Table 1 N-469-1
2/3/03 Table 1 N-500-4
10/14/11 Table 1 N-505
5/4/04 Table 1 N-511
5/4/04 Table 1 N-519-1
1/16/19 RG 1.193 N-520-6
12/11/12 Table 1 N-525
7/23/02 Table 1 N-530
2/3/03 RG 1.193 N-539-1
8/16/16 Table 1 N-548
9/7/01 Table 1 N-564-2  
2/3/03 Table 1 Code Case Number Approval Date Table Where Code Case Is Listed N-565
12/3/99 RG 1.193 N-570-2
9/9/08 Table 1 N-579
2/3/03 Table 1 N-580-2
1/4/08 Table 1 N-594-1
10/14/11 Table 1 N-607
5/4/04 Table 1 N-610
5/4/04 Table 1 N-620
5/4/04 Table 1 N-621-1
10/8/04 Table 1 N-625-1
2/20/04 Table 1 N-631
7/23/02 Table 1 N-632
2/3/03 Division 2 N-633
6/14/02 Division 2 N-635-1
2/14/03 Table 1 N-636
7/23/02 Table 1 N-637-1
9/20/10
Table 1 N-642
2/3/03 Table 1 N-644-1
3/28/01 Table 1 N-650
2/20/04 Table 1 N-655-2
6/6/10
Table 1 N-659-3
10/12/17 RG 1.193 N-673
8/7/03 RG 1.193 N-692-1
5/9/16 Table 1 N-698
11/18/03 Table 1 N-699
1/5/06 Table 1 N-703
5/4/04 Table 1 N-707-1
2/18/16 Division 3 N-708
9/21/08 Table 1 N-710
5/4/04 Table 1 N-721-1
10/20/16 Table 1 N-725
1/12/05 Table 1 N-727
2/24/06 Table 1 N-736
1/5/06 Table 1 N-738
7/1/05 Table 1 N-741
10/11/05 Table 1 N-746
1/5/06 Table 1


58Appendix BNumerical Listing of Section III Code Cases inSupplement 4, 1992 Edition, through Supplement 11, 1998, Edition
APPENDIX B
1N-4-11N-7-1 N-20-3 N-20-4 N-31-1 N-47-30
NUMERICAL LISTING OF CURRENT SECTION III CODE CASES
N-47-31 N-47-32 N-47-33 N-48-2 N-49-4 N-50-1 N-51-2 N-60-5 N-62-6 N-62-7 N-71-16 N-71-17 N-106-2 N-119-6 N-122-2 N-131-1 N-133-3 N-154-1 N-155-2 N-160-1 N-171 N-188-1 N-192-2 N-196-1 N-205 N-208-1 N-208-2 N-213 N-231 N-240
AND TABLE WHERE EACH CODE CASE IS LISTED
N-241 N-243 N-246-2 N-247 N-249-12 N-249-13 N-262N-265-1N-284-1 2N-292 N-294 N-304-4 N-309-1 N-313 N-315 N-316 N-318-4 N-318-5 N-319-2 N-319-3 N-324 N-329 N-337-1 N-345-1 N-348-2 N-351 N-354-1 N-368 N-369 N-370-2 N-373-1 N-379-1 N-384-1 N-387 N-391-1 N-391-2 N-392-2 N-392-3 N-393 N-394 N-395 N-403 N-404 N-405-1 N-410
N-411-1 N-418-1 N-420
N-430
N-433N-438-1N-438-3 N-438-4 N-439 N-439-1 N-440
N-440-1 N-441-1 N-441-2 N-443-2 N-451 N-452 N-453-3 N-454-1 N-455-1 N-459 N-462 N-464 N-466-1 N-469 N-469-1 N-474-2 N-475 N-476 N-482 N-483-2 2N-483-3 2N-484-1 N-492-1 N-493 N-497-1 N-500
N-500-1 N-501 N-502 N-505 N-507 N-510 2N-510-1 2N-511 N-519 2N-520
N-520-1N-525N-530 2N-539 N-540
N-548 N-549 N-550
N-551 N-558 N-559 N-564 N-564-1 N-564-2 N-565 2N-570
N-572 N-579 N-580
N-580-1 N-594 N-595 2N-595-1 2N-595-2 2N-596 N-607 N-608 N-610
N-611 N-620
N-621 N-625 N-626 N-631 N-632 N-635 N-636 N-637 N-642 N-644 N-646
59REGULATORY ANALYSISA separate regulatory analysis was not prepared for this regulatory guide.  The regulatorybasis for this guide is the regulatory analysis prepared for the amendment to 10 CFR 50.55a,
"Codes and Standards," that incorporates this regulatory guide by reference.A copy of the Regulatory Analysis is available for inspection and/or copying for a feeat the NRC
's Public Document Room at 11555 Rockville Pike, Public File Area (O-1F21),Rockville, MD.  The PDR
's mailing address is USNRC PDR, Washington, DC 20555-0001;telephone (301)415-4737 or toll-free 1-(800)397-4209; fax (301)415-3548; e-mail


<PDR@NRC.GOV> . Electronic copies of the Regulatory Analysis are available in NRC
RG 1.84, Rev. 39, Appendix B, Page B-2 Code Case Number Approval Date Table Where Code Case Is Listed N-748
'sPublic Electronic Reading Room, which can be accessed through the NRC
9/9/08 Division 3 N-755-4
's website,ML031490533.}}
5/11/17 Table 2 N-756
1/21/07 Table 1 N-757-1
9/21/07 Table 2 N-759-2
1/4/08 Table 1 N-760-2
10/10/08 Table 1 N-761
9/20/10
RG 1.193 N-763
8/28/08 Division 2 N-767
1/4/08 Table 1 N-774
9/3/08 Table 1 N-777
10/10/08 Table 1 N-779
1/26/09 Table 2 N-782
1/30/09 Table 1 N-785
10/12/09 Table 1 N-791
9/20/10
Division 2 N-792-1
8/12/12 RG 1.193 N-793
9/20/10
Division 2 N-794
9/20/10
Division 2 N-796
10/18/10
Division 2 N-801-3
5/11/17 Table 1 N-804
10/14/11 RG 1.193 N-807
4/20/11 Division 2 N-811
8/5/11 Division 2 N-812-1
1/10/13 Division 5 N-815
12/6/11 Table 1 N-816
12/6/11 Table 1 N-817
12/6/11 Table 1 N-818-1
8/20/14 RG 1.193 N-819
12/6/11 Table 1 N-820
12/29/11 Division 2 N-822-4
8/2/16 Table 1 N-833
1/2/13 Division 2 N-834
10/22/13 Table 1 N-836
10/22/13 Table 1 N-837
10/22/13 RG 1.193 N-841
1/6/14 Table 1 Code Case Number Approval Date Table Where Code Case Is Listed N-844
2/9/14 Table 1 N-846
7/25/14 RG 1.193 N-850
10/20/14 Division 2 N-852
2/9/15 Table 2 N-855
7/8/15 Table 1 N-856
7/16/15 Table 1 N-859
1/20/16 Table 1 N-861
2/11/16 Division 5 N-862
2/11/16 Division 5 N-863-1
2/16/17 Table 1 N-866
11/14/16 Table 1 N-870-1
11/2/17 Table 1 N-872
10/20/16 Division 5 N-879
5/10/17 Table 1 N-881
12/4/17 RG 1.193 N-883
1/29/18 Table 2 N-884
10/23/18 Table 1 N-886
5/2/18 Table 2 N-887
5/2/18 Table 1 N-891
12/17/18 Table 1}}


{{RG-Nav}}
{{RG-Nav}}

Latest revision as of 03:18, 16 March 2025

9, Design, Fabrication, and Materials Code Case Acceptability, ASME Section III
ML21181A225
Person / Time
Issue date: 12/17/2021
From: Bill Lin
NRC/RES/DE
To:
Roche-Rivera, R; Lin, B
Shared Package
ML21181A221 List:
References
RG-1.084, Rev 39
Download: ML21181A225 (55)
v • d • e


U.S. NUCLEAR REGULATORY COMMISSION

REGULATORY GUIDE 1.84, REVISION 39

Issue Date: December 2021 Technical Lead: Bruce Lin

Written suggestions regarding this guide or development of new guides may be submitted through the NRCs public Web site in the NRC Library at https://nrcweb.nrc.gov/reading-rm/doc-collections/reg-guides/, under Document Collections, in Regulatory Guides, at https://nrcweb.nrc.gov/reading-rm/doc-collections/reg-guides/contactus.html.

Electronic copies of this RG, previous versions of this guide, and other recently issued guides are available through the NRCs public Web site under the Regulatory Guides document collection of the NRC Library at https://nrcweb.nrc.gov/reading-rm/doc- collections/reg-guides/. This RG is also available through the NRCs Agencywide Documents Access and Management System (ADAMS) at http://www.nrc.gov/reading-rm/adams.html, under Accession No. ML21181A225. The regulatory analysis may be found in ADAMS under Accession No. ML21196A096. The associated draft guide DG-1366 may be found in ADAMS under Accession No. ML20120A633, and the staff responses to the public comments on DG-1366 may be found in ADAMS under Accession No ML21196A100.

DESIGN, FABRICATION, AND MATERIALS CODE CASE

ACCEPTABILITY, ASME SECTION III

A. INTRODUCTION

Purpose

This regulatory guide (RG) lists the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code,Section III, Division 1, Rules for Construction of Nuclear Power Plant Components (Ref. 1), Code Cases that the U.S. Nuclear Regulatory Commission (NRC) has approved for use as voluntary alternatives to the mandatory ASME BPV Code provisions that are incorporated by reference into Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Domestic Licensing of Production and Utilization Facilities (Ref. 2).

Applicability

This RG applies to reactor licensees and applicants subject to 10 CFR Part 50, Section 50.55a, Codes and standards.

Applicable Regulations

General Design Criterion (GDC) 1, Quality Standards and Records, of Appendix A, General Design Criteria for Nuclear Power Plants, to 10 CFR Part 50 requires, in part, that structures, systems, and components important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be performed. Where generally recognized codes and standards are used, GDC 1 requires that they be identified and evaluated to determine their applicability, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keeping with the required safety function.

10 CFR Part 50, Appendix A, GDC 30, Quality of Reactor Coolant Pressure Boundary, requires, in part, that components that are part of the reactor coolant pressure boundary be designed, fabricated, erected, and tested to the highest quality standards practical.

RG 1.84, Rev. 39, Page 2

10 CFR Part 50, Appendix B, Quality Assurance Criteria for Nuclear Power Plants and Fuel Processing Plants, requires, in part, that measures be established for the control of special processing of materials and that proper testing be performed.

10 CFR 50.55a(c) requires, in part, that components of the reactor coolant pressure boundary must be designed, fabricated, erected, and tested in accordance with the requirements for the Class 1 components of ASME BPV Code,Section III, or equivalent quality standards.

10 CFR 52.79(a)(11) (Ref. 3) requires the final safety analysis report to include a description of the program(s), and their implementation, necessary to ensure that the systems and components meet the requirements of the ASME Boiler and Pressure Vessel Code and the ASME Code for Operation and Maintenance of Nuclear Power Plants in accordance with 50.55a of this chapter.

Related Guidance

RG 1.147, Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1 (Ref. 4), lists the ASME BPV Code,Section XI, Rules for Inservice Inspection of Nuclear Power Plant Components, Code Cases that the NRC has approved for use as voluntary alternatives to the mandatory ASME BPV Code provisions that are incorporated into 10 CFR 50.55a.

RG 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code (Ref. 5), lists the ASME Operation and Maintenance Code (OM Code) Code Cases that the NRC has approved for use as voluntary alternatives to the mandatory ASME OM Code provisions that are incorporated into 10 CFR 50.55a.

RG 1.193, ASME Code Cases Not Approved for Use (Ref. 6), lists the ASME BPV Code,Section III and Section XI, Code Cases and the ASME OM Code Cases that the NRC has not approved for generic use.

RG 1.136, Design Limits, Loading Combinations, Materials, Construction, and Testing of Concrete Containments (Ref. 7), endorses ASME BPV Code,Section III, Division 2, Code for Concrete Containments and addresses the acceptance of ASME BPV Code,Section III, Division

2 Code Cases.

Purpose of this Regulatory Guide

The NRC incorporated this RG into 10 CFR 50.55a by reference. The RG contains new Code Cases and revisions to existing Code Cases that the staff has approved for use, as listed in Tables 1 and 2 of this guide. The RG also states the requirements that govern the use of Code Cases. Licensees may voluntarily use Code Cases approved by the NRC as an alternative to compliance with the ASME Code provisions that have been incorporated by reference into 10 CFR 50.55a. Because the status of Code Cases continually changes, the staff plans to periodically update 10 CFR 50.55a and this guide to accommodate new Code Cases and any revisions to existing Code Cases.

Paperwork Reduction Act

This RG provides voluntary guidance for implementing the mandatory information collections in

10 CFR Parts 50 and 52 that are subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et. seq.).

These information collections were approved by the Office of Management and Budget (OMB), under control numbers 3150-0011 and 3150-0151, respectively. Send comments regarding this information

RG 1.84, Rev. 39, Page 3 collection to the FOIA, Library, and Information Collections Branch ((T6-A10M), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by e-mail to Infocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, NEOB-10202 (3150-0011 and

3150-0151), Office of Management and Budget, Washington, DC, 20503.

Public Protection Notification

The NRC may not conduct or sponsor, and a person is not required to respond to, a collection of information unless the document requesting or requiring the collection displays a currently valid OMB

control number.

RG 1.84, Rev. 39, Page 4

B. DISCUSSION

Reason for Revision

RG 1.84, Revision 39, includes new information reviewed by the NRC on the Section III Code Cases listed in Supplements 0 through 7 to the 2015 Edition, Supplements 0 through 7 to the 2017 Edition, and Supplements 0 and 1 to the 2019 Edition of the ASME BPV Code. This revision updates and supersedes RG 1.84, Revision 38, which included information from Supplement 11 to the 2010 Edition and Supplements 0 through 7 to the 2013 Edition. This revision also removes ASME BPV Code,Section III, Division 2 and Division 3 Code Cases0F1 from this RG.

Background

Provisions of the ASME Code have been used since 1971 as one part of the framework to establish the necessary design, fabrication, construction, testing, and performance requirements for structures, systems, and components important to safety. Among other things, ASME standards committees develop improved methods for the construction and inservice inspection of ASME Class 1, 2, 3, metal containment (MC), and concrete containment (CC) nuclear power plant components. A broad spectrum of stakeholders participates in the ASME process to help ensure consideration of various interests.

ASME publishes a new edition of the BPV Code, which includesSection III, every 2 years. In

10 CFR 50.55a(a)(1)(i), the NRC references the latest edition of Section III that the agency has approved for use. ASME also publishes Code Cases quarterly. Code Cases provide alternatives that ASME

developed and approved. This RG identifies the Code Cases that the NRC has determined to be acceptable alternatives to applicable parts of Section III. Under 10 CFR 50.55a(z), a licensee or applicant may request authorization to use Section III Code Cases that the NRC has not yet endorsed. In 10 CFR 50.55a(z), the NRC permits the use of alternatives to the Code requirements referenced in 10 CFR 50.55a provided that the proposed alternatives result in an acceptable level of quality and safety and their use is authorized by the Director of the Office of Nuclear Reactor Regulation.

The NRC incorporates the ASME BPV Code by reference into 10 CFR 50.55a. NRC approved Code Cases provide an acceptable voluntary alternative to the mandatory ASME Code provisions. The regulation at 10 CFR 50.55a(b)(4) provides the requirements related to the implementation of ASME

Section III Code Cases. When a licensee initially applies a Code Case listed in Table 1 or 2 of this guide, it must implement the most recent version of that Code Case incorporated by reference in 10 CFR 50.55a.

ASME may annul a Code Case because its provisions have been incorporated into the Code, the application for which it was specifically developed no longer exists, or experience has shown that the design analysis or construction method is no longer required. After ASME annuls a Code Case and after the NRC amends 10 CFR 50.55a and this guide, applicants or licensees may not implement that Code Case for the first time. However, a licensee or an applicant that implemented the Code Case before its annulment may continue to use that Code Case until it voluntarily updates itsSection III Code of Record.

If the NRC incorporated a Code Case by reference into 10 CFR 50.55a and ASME later annulled it because experience has shown that the design analysis or construction method is no longer required, the NRC will amend 10 CFR 50.55a and this guide to remove the approval of the annulled Code Case.

Licensees or applicants should not begin to implement such annulled Code Cases in advance of the rulemaking. Notwithstanding these requirements, the Commission may impose new or revised Code requirements, including implementation schedules, that it determines are consistent with 10 CFR 50.109,

1 Section III, Division 2 Code Cases are addressed in RG 1.136. Section III, Division 3 Code Cases are addressed

in a new RG currently under development.

RG 1.84, Rev. 39, Page 5 Backfitting.

A Code Case may be revised, for example, to incorporate user experience. The licensee or applicant cannot apply an older or superseded version of the Code Case for the first time. If an applicant or a licensee applied a Code Case listed in Table 1 or 2 of this guide before it was listed as superseded, it may continue to use the Code Case until it updates its Construction Code of Record (an applicant would update its application). If a Code Case is incorporated by reference into 10 CFR 50.55a and ASME later issues a revised version of the Code Case because experience has shown that the design analysis, construction method, examination method, or testing method is inadequate, the NRC will amend 10 CFR 50.55a and the relevant RG to remove the approval of the superseded Code Case. Applicants and licensees should not begin to implement such superseded Code Cases in advance of the rulemaking.

With regard to the use of any Code Case, the user is responsible for ensuring that the provisions of the Code Case do not conflict with the licensees commitments or regulatory requirements.

RG 1.84, Rev. 39, Page 6

C. REGULATORY POSITION

For RG 1.84, Revision 39, the NRC reviewed the Section III Code Cases listed in Supplements 0

through 7 to the 2015 Edition, Supplements 0 through 7 to the 2017 Edition, and Supplements 0 and 1 to the 2019 Edition of the ASME BPV Code.1F2 RG 1.84, Revision 39 supersedes the information in Revision

38. Appendix A to this guide lists the supplements reviewed by the NRC, the editions, the supplement numbers, and the numerical listing of Section III Code Cases in each supplement. Appendix B to this guide lists all current Section III Code Cases and table where each code case is listed. The following five tables list the Code Cases addressed by this RG:

a. Table 1, Acceptable Section III Code Cases, lists Code Cases that are acceptable to the NRC for application in the design and construction of light-water-cooled nuclear power plants.

b. Table 2, Conditionally Acceptable Section III Code Cases, lists Code Cases that are acceptable as long as they are used with the identified conditions (i.e., the Code Case is generally acceptable;

however, the NRC has determined that requirements in the Code Case, which are alternative requirements to the BPV Code, must be supplemented to provide an acceptable level of quality and safety).

c. Table 3, Annulled Unconditionally Approved Section III Code Cases, lists Code Cases that have been annulled by ASME.

d. Table 4, Annulled Conditionally Acceptable Section III Code Cases, lists Code Cases that the NRC

found to be acceptable as long as the licensee used them with the identified conditions; however, they were subsequently annulled by ASME.

e. Table 5,Section III Code Cases That Have Been Superseded by Revised Code Cases on or after July 1, 1974, lists Code Cases that have been superseded through revision.

2 ASME Section III, Division 2 Code Cases are addressed in RG 1.136. The NRC did not review Code Cases that pertain to

Section III, Division 3 and Division 5.

RG 1.84, Rev. 39, Page 7

1. Acceptable Section III Code Cases

The NRC finds the Code Cases listed in Table 1 to be acceptable for application in the design and construction of components and their supports for water-cooled nuclear power plants. RG 1.193 lists the ASME Code Cases that the NRC determined to be unacceptable. ASME publishes the Code Cases quarterly in supplements to each edition. To assist users, new and revised Code Cases are shaded in grey to distinguish them from those approved in previous versions of this guide. For Code Cases previously listed in this guide, the third column of Table 1 lists the dates of ASME approvals. For new or revised Code Cases, the third column of Table 1 lists the supplement and edition in which each Code Case was published (e.g., 5/17E means Supplement 5 to the 2017 Edition of the ASME BPV Code).

Table 1. Acceptable Section III Code Cases

CODE CASE

NUMBER

TABLE 1 ACCEPTABLE SECTION III CODE CASES

DATE OR

SUPPLEMENT/

EDITION

N-4-13 Special Type 403 Modified Forgings or Bars,Section III, Division 1, Class 1 and CS

2/12/08 N-60-6 Material for Core Support Structures,Section III, Division I

12/6/11 N-131-1

(1759-1)

Material for Internal Pressure Retaining Items for Pressure Relief Valves,Section III, Division 1, Class 1, 2, and 3

2/3/03 N-133-3 Use of SB-148 Alloys 952 and 954,Section III, Division 1, Class 3

2/3/03 N-154-1 Projection Resistance Welding of Valve Seats,Section III, Division 1, Classes 1, 2, and 3

2/3/03 N-205 Use of Ductile Iron SA-395,Section III, Division 1, Class 3

2/25/02 N-249-17 Additional Materials for Subsection NF, Classes 1, 2, 3, and MC Supports Fabricated without Welding,Section III, Division 1

0/19E

N-284-4 Metal Containment Shell Buckling Design Methods, Class MC, TC, and SC

Construction,Section III, Divisions 1 and 3

10/8/12 N-315 Repair of Bellows,Section III, Division 1

2/3/03 N-319-3 Alternate Procedure for Evaluation of Stresses in Butt Welding Elbows in Class 1 Piping,Section III, Division 1

2/3/03 N-351 Use of Subsize Charpy V-Notch Specimens,Section III, Division 1

1/17/00

N-369 Resistance Welding of Bellows,Section III, Division 1

5/9/03 N-373-3 Alternative PWHT Time at Temperature for P-No. 5A or P-No. 5B Group 1 Material, Classes 1, 2, and 3

10/8/04 N-405-1 Socket Welds,Section III, Division 1

2/20/04 N-452 Specialized Subcontracted Welding Process (Electron Beam Welding),

Section III, Division 1

5/9/03 N-453-3 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) for Class 2 and 3 Construction,Section III, Division 1

8/14/01 N-454-1 Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNS N08925 and N08926) Wrought Fittings for Class 2 and 3 Construction,Section III,

Division 1

6/17/03

RG 1.84, Rev. 39, Page 8 CODE CASE

NUMBER

TABLE 1 ACCEPTABLE SECTION III CODE CASES

DATE OR

SUPPLEMENT/

EDITION

N-455-1 Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNS N08925 and N08926) Forged Flanges and Fittings for Class 2 and 3,Section III, Division 1

6/17/03 N-469-1 Martensitic Stainless Steel for Class 1, 2, and 3 Components,Section III,

Division 1

2/3/03 N-500-4 Alternative Rules for Standard Supports for Classes 1, 2, 3 and MC,

Section III, Division 1

10/14/11 N-505 Alternative Rules for the Examination of Butt Welds Used as Closure Welds for Electrical Penetration Assemblies in Containment Structures,Section III,

Division 1

5/4/04 N-511 Design Temperature for Atmospheric and 0-15 psi Storage Tanks,Section III,

Division 1

5/4/04 N-520-6 Alternative Rules for Renewal of Active or Expired N-Type Certificates for Plants Not in Active Construction,Section III, Division 1

12/11/12 N-525 Design Stress Intensities and Yield Strength Values for UNS N06690 with a Minimum Specified Yield Strength of 30 ksi, Class 1 Components,Section III,

Division 1

7/23/02 N-539-1 UNS N08367 in Class 2 and 3 Valves,Section III, Division 1

0/17E

N-548 Air Cooling of SA-182 Grades F304, F304L, F316, F316L Forgings Instead of Liquid Quenching After Solution Heat Treatment, Class 1, 2, and 3,Section III,

Division 1

9/7/01 N-564-2 UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction,Section III,

Division 1

2/3/03 N-570-2 Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1, 2, 3, and MC,Section III, Division 1

9/9/08 N-579 Use of Nonstandard Nuts, Class 1, 2, and 3, MC, CS Components and Supports Construction,Section III, Division 1

2/3/03 N-580-2 Use of Alloy 600 with Columbium Added,Section III, Division 1

1/4/08 N-594-1 Repairs to P-4 and P-5A Castings without Postweld Heat Treatment Class 1,

2, and 3 Construction,Section III, Division 1

10/14/11

N-607 Guidance on Implementation of NS Certificate of Accreditation,Section III,

Division 1

5/4/04 N-610

Alternative Reference Stress Intensity Factor (K1R) Curve for Class Components,Section III, Division 1

5/4/04 N-620

Rules for Class 1 Type M Pumps,Section III, Division 1

5/4/04 N-621-1 Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800°F,Section III,

Division 1

10/8/04 N-625-1 Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800°F,Section III,

Division 1

2/20/04 N-631 Use of Fracture Toughness Test Data to Establish Reference Temperature for Pressure Retaining Materials Other Than Bolting for Class 1 Vessels,Section III, Division 1

7/23/02

RG 1.84, Rev. 39, Page 9 CODE CASE

NUMBER

TABLE 1 ACCEPTABLE SECTION III CODE CASES

DATE OR

SUPPLEMENT/

EDITION

N-635-1 Use of 22Cr-5Ni-3Mo-N (Alloy UNS S31803) Forgings, Plate, Bar, Welded and Seamless Pipe, and/or Tube, Fittings, and Fusion Welded Pipe with Addition of Filler Metal, Classes 1, 2 and 3,Section III, Division 1

2/14/03 N-636 Use of 18Cr-13Ni-3Mo (Alloy UNS S31703), 19Cr-15Ni-4Mo (Alloy UNS

S31725), and 18.5Cr-15.5Ni-4.5Mo-N (Alloy UNS S31726) Forgings, Seamless Tubing, Plate, Welded Tubing, Welded and Seamless Pipe, Welded Pipe with Addition of Filler Metal and Fittings, Classes 2 and 3,Section III,

Division 1

7/23/02 N-637-1 Use of 44Fe-25Ni-21Cr-Mo (Alloy UNS N08904) Plate, Bar, Fittings, Welded Pipe, and Welded Tube, Classes 2 and 3,Section III, Division 1

9/20/10

N-642 Alternative Rules for Progressive Liquid Penetrant Examination of Groove Welds In P-No. 8 Materials 3/16 in. (5 mm) Thick and Less Made by Autogenous Machine or Automatic Welding,Section III, Division 1

2/3/03 N-644-1 Weld Procedure Qualification for Procedures Exempt From PWHT

in Classes 1, 2, and 3 Construction,Section III, Division 1

3/28/01 N-650

Use of SA-537, Class 2 Plate Material in Non-pressure Boundary Application Service 700°F to 850°F, Class 1 or CS,Section III, Division 1

2/20/04 N-655-2 Use of SA-738, Grade B, for Metal Containment Vessels, Class MC,Section III,

Division 1

6/6/10

N-692-1 Use of Standard Welding Procedures,Section III, Division 1

6/15E

N-698 Design Stress Intensities and Yield Strength for UNS N06690 with a Minimum Specified Yield Strength of 35 ksi (240 MPa), Class 1 Components,Section III,

Division 1

11/18/03 N-699 Use of Titanium Grade 2 (UNS R50400) Tube and Bar, and Grade 1 (UNS R50250) Plate and Sheet for Class 1 Construction,Section III,

Division 1

1/5/06 N-703 Use of Strain Hardened Austenitic Material at Lower Design Stress Values for Class 1 Valves,Section III, Division 1

5/4/04 N-708

Use of JIS G-4303, Grades SUS304, SUS304L, SUS316, and SUS316L,

Section III, Division 1

9/21/07 N-710

Use of Zirconium Alloy UNS R60702, Bars, Forgings, Plate, Seamless and Welded Fittings, Seamless and Welding Tubing, and Seamless and Welded Pipe, for Class 3 Construction,Section III, Division 1

5/4/04 N-721-1 Alternative Rules for Linear Piping Supports,Section III, Division 1

5/17E

N-725 Design Stress Values for UNS N06690 with Minimum Specified Yield Strength of 35 ksi (240 MPa), Classes 2 and 3 Components,Section III, Division 1

1/12/05 N-727 Dissimilar Welding Using Continuous Drive Friction Welding for Reactor Vessel CRDM/CEDM Nozzle to Flange/Adapter Welds, Classes 1,Section III,

Division 1

2/24/06 N-736 Use UNS S32050 Welded and Seamless Pipe and Tubing, Forgings, and Plates Conforming to SA-249/SA-249M, SA-479/SA-479M, and SA-240/SA-240M,

and Grade CK35MN Castings Conforming to ASTM A 743-03 for Construction of Class 1, 2, and 3 Components,Section III, Division 1

1/5/06

RG 1.84, Rev. 39, Page 10

CODE CASE

NUMBER

TABLE 1 ACCEPTABLE SECTION III CODE CASES

DATE OR

SUPPLEMENT/

EDITION

N-738 NDE of Full Penetration Butt Welds in Class 2 Supports,Section III,

Division 1

7/1/05 N-741 Use of 22Cr-5Ni-3Mo-N (Alloy UNS S32205 Austenitic/ferritic Duplex Stainless Steel) Forging, Plate, Welded and Seamless Pipe Tubing, and Fittings to SA-240, SA-0789, A 790-04a, SA-815, Classes 2 and 3,Section III,

Division 1

10/11/05 N-746 Use of 46Fe-24Ni-21Cr-6Mo-Cu-N (UNS N08367) Bolting Materials for Class 2 and 3 Components,Section III, Division 1

1/5/06 N-756 Alternative Rules for Acceptability for Class 1 Valves, NPS (DN 25) and Smaller with Nonwelded End connections Other Than Flanges,Section III,

Division 1

1/21/07 N-759-2 Alternative Rules for Determining Allowable External Pressure and Comprehensive Stress for Cylinders, Cones, Spheres, and Formed Heads,Section III, Division 1

1/4/08 N-760-2 Welding of Valve Plugs to Valve Stem Retainers, Classes 1, 2, and 3,Section III, Division 1

10/10/08 N-767 Use of 21 Cr-6Ni-9Mn (Alloy UNS S21904) Grade GXM-11 (Conforming to SA-182/SA-182M and SA-336/SA-336M), Grade TPXM-11 (Conforming to SA-312/SA-312M) and Type XM-11 (Conforming to SA-666) Material, for Class-1 Construction,Section III, Division 1

1/4/08 N-774 Use of 13Cr-4Ni (Alloy UNS S41500) Grade F6NM Forgings Weighing in Excess of 10,000 lb (4,540 kg) and Otherwise Conforming to the Requirements of SA-336/SA-336M for Class 1, 2, and 3 Construction,Section III, Division 1

9/3/08 N-777 Calibration of Cv Impact Test Machines,Section III, Divisions 1, 2, and 3

10/10/08 N-782 Use of Editions, Addenda, and Cases,Section III, Division 1

1/30/09 N-785 Use of SA-479/SA-479M, UNS S41500 for Class 1 Welded Construction,Section III, Division 1

10/12/09 N-801-3 Rules for Repair of N-Stamped Class 1, 2, and 3 Components,Section III,

Division 1

1/17E

N-815 Use of SA-358/SA-358M Grades Fabricated as Class 3 or Class 4 Welded Pipe, Class CS Core Support Construction,Section III, Division 1

12/6/11 N-816 Use of Temper Bead Weld Repair Rules Adopted in 2010 Edition and Earlier Editions,Section III, Division 1

12/6/11 N-817 Use of Die Forgings, SB-247, UNS A96061, Class T6, with Thickness

4.000 in. Material, Class 2 Construction (1992 Edition or Later),Section III,

Division 1

12/6/11 N-819 Use of Die Forgings, SB-247, UNS A96061, Class T6, with Thickness

4.000 in. Material, Class 2 Construction (1989 Edition with the 1991 Addenda or Earlier),Section III, Division 1

12/6/11 N-822-4 Application of the ASME Certification Mark,Section III, Divisions 1, 2, 3, and

5

7/15E

N-834 ASTM A988/A988M-11 UNS S31603, Subsection NB, Class 1 Components,Section III, Division 1

10/22/13 N-836 Heat Exchanger Tube Mechanical Plugging, Class 1,Section III, Division 1

10/22/13

RG 1.84, Rev. 39, Page 11 CODE CASE

NUMBER

TABLE 1 ACCEPTABLE SECTION III CODE CASES

DATE OR

SUPPLEMENT/

EDITION

N-841 Exemptions to Mandatory Post Weld Heat Treatment (PWHT) of SA-738 Grade B for Class MC Applications,Section III, Division 1

1/6/14 N-844 Alternatives to the Requirements of NB-4250(c)Section III, Division 1

2/9/14 N-855 SB-148 C95800 Valves for Class 3 Construction,Section III, Division 1

2/15E

N-856 SA-494 Grade CW-12MW (UNS N30002) Nickel Alloy Castings for Construction of NPS 21/2 and Smaller Flanged Valves for Class 3 Construction,Section III, Division 1

2/15E

N-859 Construction of ASME B16.9 Wrought Buttwelding Fittings and ASME B16.11 Forged Fittings Made From SB-366 UNS N04400 Material for Section III,

Class 3 Construction,Section III, Division 1

5/15E

N-863-1 Postweld Heat Treatment (PWHT) of Valve Seal Welds for P4 and P5A

Materials,Section III, Division 1

1/17E

N-866 Alternative Materials for Construction of Section III, Class 2 Vessels,Section III, Division 1

0/17E

N-870-1 Rules for the Elimination of External Surface Defects on Class 1, 2, and 3 Piping, Pumps, or Valves After Component Stamping and Prior to Completion of the N-3 Data Report,Section III, Division 1

4/17E

N-879 Use of Micro-Alloyed Carbon Steel Bar in Patented Mechanical Joints and Fittings, Classes 1, 2, and 3,Section III, Division 1

1/17E

N-884 Procedure to Determine Strain Rate for Use With the Environmental Fatigue Design Curve Method and the Environmental Fatigue Correction Factor, Fen, Method as Part of an Environmental Fatigue Evaluation for Components Analyzed per the NB-3200 Rules,Section III, Division 1

0/19E

N-887 Alternatives to the Requirements of NB-4424.2(a), Figure NB-4250-2, and Figure NB-4250-3,Section III, Division 1

6/17E (with errata issued in

3/19E)

N-891 Alternative Requirements to Appendix XXVI, XXVI-2400, XXVI-4130, and XXVI-4131 for Inspection and Repair of Indentations for Polyethylene Pipe and Piping Components,Section III, Division 1

0/19E

RG 1.84, Rev. 39, Page 12

2. Conditionally Acceptable Section III Code Cases

The NRC finds the Code Cases listed in Table 2 to be acceptable for application in the design and construction of components and their supports for water-cooled nuclear power plants within the limitations indicated by the NRC. Unless otherwise stated, limitations indicated by the NRC are in addition to the conditions specified in the Code Case. ASME publishes Code Cases quarterly in supplements to each edition. To assist users, new and revised Code Cases are shaded in grey to distinguish them from those approved in previous versions of this guide. For Code Cases previously listed in this guide, the third column of Table 1 lists the date of ASME approval. For new or revised Code Cases, the third column of Table 1 lists the supplement and edition in which each Code Case was published (e.g., 5/17E means Supplement 5 to the 2017 Edition of the ASME BPV Code).

Table 2. Conditionally Acceptable Section III Code Cases

CODE CASE

NUMBER

TABLE 2 CONDITIONALLY ACCEPTABLE SECTION III CODE CASES

TITLE/CONDITION

DATE OR

SUPPLEMENT/

EDITION

N-62-7 Internal and External Valve Items,Section III, Division 1, Classes 1, 2, and 3 The Code requires that Class 1 and Class 2 valve manufacturers to meet the provisions of Section III, Article NCA-4000, Quality Assurance. Class 3 valve manufacturers must also meet the provisions of Article NCA-4000

because all Code Class valve items are subject to the licensees 10 CFR Part 50,

Appendix B, approved quality assurance program.

2/3/03 N-71-20

Additional Materials for Subsection NF, Class 1, 2, 3, and MC Supports Fabricated by Welding,Section III, Division 1

(1) The maximum measured ultimate tensile strength (UTS) of the component support material must not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking.

(2) In the last sentence of Paragraph 5.2 of Code Case N-71-20, the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for a longer period of time must be consistent with Paragraph 5.3.2.3, Alternative Atmosphere Exposure Time Periods Established by Test, of the AWS D1.1 Code.

(3) Paragraph 16.2.2 of Code Case N-71-20 is replaced with the following:

When not exempted by 16.2.1 above, the post weld heat treatment must be performed in accordance with NF-4622 except that ASTM A-710 Grade A Material must be at least 1000°F (540°C) and must not exceed 1150°F

(620°C) for Class 1 and 2 material and 1175°F (640°C) for Class 3 material.

(4) The new holding time at temperature for weld thickness (nominal) must be

30 minutes for welds 0.5 inch or less; 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch of thickness for welds over 0.5 inch to 5 inches; and for thicknesses over 5 inches, 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 minutes for each additional inch over 5 inches.

(5) The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, 2 and 3 component supports.

(6) When welding P-number materials listed in the Code Case, the corresponding S-number welding requirements apply.

6/15E

RG 1.84, Rev. 39, Page 13 CODE CASE

NUMBER

TABLE 2 CONDITIONALLY ACCEPTABLE SECTION III CODE CASES

TITLE/CONDITION

DATE OR

SUPPLEMENT/

EDITION

N-155-3 Fiberglass Reinforced Thermosetting Resin Pipe,Section III, Division 1

(1)

The design temperature for spray pond piping must be 100°C (212°F).

(2)

The allowable design stress must be the value obtained from the minimum hydrostatic design basis in Table 3611-1 of Code Case N-155-2 (Procedure A or B) or the value determined as one-sixth of the stress obtained from a short-time burst test for the pipe being qualified, whichever is lower. The short-time burst strength must be determined by bursting the pipe (ASTM D-1599-74) using free-end mounting after it has been exposed to 1x105 pressure cycles from atmospheric to design pressure.

(3)

The value of K in Equation 9 of Paragraph 3652 must be limited to 1.2 unless it is demonstrated that, with the use of a large value of K1, the functional capability of the system will not be impaired during upset and emergency conditions.

(4)

RTR piping must be uninsulated or uncovered and installed under conditions that make it readily accessible for inspection.

(5)

Preoperational and inservice inspections must be as follows:

(a)

During the preoperational testing period, tests must be made to verify that the piping is free of vibration induced by weather conditions or water flow that could fatigue the piping prematurely.

(b)

Fiberglass-reinforced piping components must be inspected in accordance with ASME Code,Section XI, for Code Class 3 components. In addition, all pipe supports must be inspected.

(c)

Inspection frequency for piping must be increased to once annually if an exterior weather-resistant coating is not provided.

5/15E

N-755-4 Use of Polyethylene (PE) Class 3 Plastic Pipe,Section III, Division 1

(1)

When performing fusing procedure qualification testing in accordance with paragraphs -2420 and -4330 of this Code Case, the following essential variables must be used for butt fusion joints:

(a)

Joint Type: A change in the type of joint from that qualified, except that a square butt joint qualifies as a mitered joint.

(b)

Pipe Surface Alignment: A change in the pipe outside diameter (O.D.) surface misalignment of more than 10 percent of the wall thickness of the thinner member to be fused.

(c)

PE Material: Each lot of polyethylene source material to be used in production (as mentioned in paragraph (XXVI-2310(c)).

(d)

Wall Thickness: Each thickness to be fused in production (as mentioned in paragraph (XXVI-2310(c)).

(e)

Diameter: Each diameter to be fused in production (as mentioned in paragraph (XXVI-2310(c)).

(f)

Cross-sectional Area: Each combination of thickness and diameter (as mentioned in paragraph (XXVI-2310(c)).

(g)

Position: Maximum machine carriage slope when greater than 20

degrees from horizontal (as mentioned in paragraph (XXVI-

4321(c)).

(h)

Heater Surface Temperature: A change in the heater surface

1/17E

RG 1.84, Rev. 39, Page 14 CODE CASE

NUMBER

TABLE 2 CONDITIONALLY ACCEPTABLE SECTION III CODE CASES

TITLE/CONDITION

DATE OR

SUPPLEMENT/

EDITION

temperature to a value beyond the range tested (as mentioned in paragraph (XXVI-2321).

(i)

Ambient Temperature: A change in ambient temperature to less than 50F (10C) or greater than 125F (52C) (as mentioned in paragraph (XXVI-4412(b)).

(j)

Interfacial Pressure: A change in interfacial pressure to a value beyond the range tested (as mentioned in paragraph (XXVI-2321).

(k)

Decrease in Melt Bead Width: A decrease in melt bead size from that qualified.

(l)

Increase in Heater Removal Time: An increase in heater plate removal time from that qualified.

(m)

Decrease in Cool-down Time: A decrease in the cooling time at pressure from that qualified.

(n)

Fusing Machine Carriage Model: A change in the fusing machine carriage model from that tested (as mentioned in paragraph (XXVI-

2310(d)).

(2)

When performing procedure qualification for High Speed Tensile Impact testing of butt fusion joints in accordance with XXVI-2300 or XXVI-

4330, if the specimen breaks away from the fusion zone it must be retested. When performing fusing operator qualification bend tests of butt fusion joints in accordance with XXVI-4342, guided side bend testing must be used for all thicknesses greater than 1.25 inches.

N-757-1 Alternative Rules for Acceptability for Class 2 and 3 Valves (DN 25) and Smaller with Welded and Nonwelded End Connections Other Than Flanges,Section III, Division 1 The design provisions of ASME Section III, Division 1, Appendix XIII, shall not be used for Class 3 valves.

9/21/07 N-779 Alternative Rules for Simplified Elastic-Plastic Analysis Class 1,Section III,

Division 1 Acceptable for use with code editions Summer 1979 addenda and later.

1/26/09 N-852 Application of the ASME NPT Stamp,Section III, Divisions 1, 2, 3, and 5 Licensees may use the NPT Code Symbol Stamp with the letters arranged horizontally as specified in ASME BPV Code Case N-852 for the service life of a component that had the NPT Code Symbol Stamp applied during the time period from January 1, 2005 through December 31, 2015.

0/15E

N-883 Construction of Items Prior to the Establishment of a Section III, Division 1 Owner,Section III, Division 1 This Code Case may only be used for the construction of items by a holder of a construction permit, operating license, or combined license under 10 CFR Part

50 or Part 52. This Code Case may not be used by a holder of a manufacturing license or standard design approval or by a design certification applicant.

5/17E

N-886 Use of Polyethylene Pipe for Class 3,Section III, Division 1 For above ground applications, licensees must ensure the plant fire protection program addresses any HDPE consistent with the requirements of 10 CFR

50.48.

6/17E

RG 1.84, Rev. 39, Page 15

3. Annulled Unconditionally Approved Section III Code Cases

The NRC had previously approved the Code Cases listed in Table 3 unconditionally, but they have since been annulled by ASME. To assist users, new annulled Code Cases are shaded in grey to distinguish them from those listed in previous versions of this guide.

Table 3. Annulled Unconditionally Approved Section III Code Cases

CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-1-7

(1332-7)

Requirements for Steel Forgings,Section III, Division 1

7/1/82 N-2

(1334-3)

Requirements for Corrosion-Resisting Steel Bars and Shapes,Section III

1/1/82 N-3-10

(1335-10)

Requirements for Bolting Materials,Section III

9/16/84 N-5-1 Nickel Chromium Age Hardenable Alloys (Alloy X750),Section III,

Division 1, Classes 1, 2, 3, MC, and CS

12/13/85 N-6

(1345-2)

Requirements for Nickel-Molybdenum-Chromium-Iron Alloys,Section III

3/1/79 N-7-1

High Yield Strength Steel, Class 1,Section III, Division 1

2/22/05 N-9-4

(1395-4)

SA-508, Class 2 Forgings with Modified Manganese Content,Section III

7/1/82 N-10

(1407-3)

Time of Examination for Classes, 1, 2, and 3,Section III Vessels

9/17/87 N-15

(1456-2)

Substitution of Ultrasonic Examination for Progressive Penetrant or Magnetic Particle Examination of Partial Penetration and Oblique Nozzle Attachment Welds,Section III

3/1/79 N-17

(1474-1)

Integrally Finned Tubes for Section III

1/21/91 N-20-4 SB-163, Cold Worked UNS N08800; and SB-163 UNS N06600,

UNS N06690, and UNS N08800 to Supplementary Requirements S2 of SB-163,Section III, Division 1, Class 1

9/18/01 N-22

(1498-1)

SA-508-Class 2 and 3, Minimum Tempering Temperature,Section III

7/1/82 N-24

(1516-2)

Welding of Seats or Minor Internal Permanent Attachments in Valves for Section III Applications

1/1/80

N-30-1

(1539-1)

Metal Bellows and Metal Diaphragm Stem Sealed Valves,Section III,

Division 1, Classes 1, 2, and 3

1/1/81 N-32-3

(1541-3)

Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III, Division 1 Construction

7/1/79 N-33

(1542-1)

Type 403 Forgings or Bars for Bolting Material,Section III

1/21/85 N-35-1

(1552-1)

Design by Analysis of Section III, Class 1 Valves

7/1/79

RG 1.84, Rev. 39, Page 16 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-37-3

(1557-3)

Steel Products Refined by Secondary Remelting,Section III and VIII,

Division 1 and 2

7/1/82 N-41

(1571)

Additional Material for SA-234 Carbon Steel Fittings,Section III

1/21/85 N-43

(1578)

SB-167 Nickel-Chromium-Iron (Alloy 600) Pipe or Tube,Section III

7/1/82 N-46

(1588)

Electro-Etching of Section III Code Symbols

3/19/82 N-48-2 Fabrication and Installation of Elevated Temperature Components,Section III, Division 1

7/1/96 N-49-4 Examination of Elevated Temperature Nuclear Components,Section III,

Class 1

7/1/96 N-50-1 Testing of Elevated Temperature Components,Section III, Division 1, Class 1

7/1/96 N-51-2 Protection against Overpressure of Elevated Temperature Components,Section III, Division 1, Class 1

7/1/96 N-55-1

(1609)

Inertia and Continuous Drive Friction Welding,Section III, Division 1

4/5/87 N-56

(1612)

Use of Type 308 Stainless Steel Rod and Bar for Section III, Class 1, 2, 3, and CS Construction

7/1/78 N-61

(1620)

Stress Category for Partial Penetration Welded Penetrations,Section III,

Class Construction

1/8/82 N-65-1

(1626-1)

Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings,Section I and III

1/21/85 N-66-1

(1630-1)

External Pressure Charts for High Yield Strength Carbon Steels and Low Alloy Steels (Yield Strength above 38 ksi to 60 ksi Inclusive) For Section III, Class 1, 2, 3, and MC

12/5/87 N-68

(1634-2)

Use of SB-359 for Section III, Division, 1, Class 3 Construction

7/1/78 N-77

(1660)

Overpressure Protection under Emergency Operating Conditions for Section III, Class 1

7/1/77 N-81

(1665)

Pressure-Temperature Ratings for Class 1 Valves Made from 5 Cr-1/2 Mo,Section III

7/1/78 N-82

(1677)

Clarification of Flange Design Loads,Section III, Class 1, 2, and 3

3/1/79 N-84

(1681-1)

Organizations Accepting Overall Responsibility for Section III

Construction

3/1/79 N-90

(1692)

Rules for Design of Welded Class 1 Pumps

7/1/78 N-94

(1700)

Determination of Capacities of Liquid Relief Valves,Section III, Division 1, Class 1, 2, and 3

3/19/82 N-95-2

(1701-2)

Determination of Capacities of Vacuum Relief Valves,Section III,

Division 1, Classes 2, 3, and MC and Division 2 Concrete Containments

7/9/82

RG 1.84, Rev. 39, Page 17 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-96-1

(1702-1)

Flanged Valves Larger than 24 Inches for Section III, Division 1, Class 1,

2, and 3 Construction

1/1/80

N-101

(1712)

Nameplates and Stamping for Section III, Division 1, Class 1, 2, 3 and MC

Construction as Referenced in NA-8300

3/1/79 N-102-2 Postweld Heat Treatment of P-1 Material,Section III, Class MC

6/30/84 N-107-1

(1722-1)

Vacuum, Carbon Deoxidized SA-508 Forgings,Section III, Division 1

1/8/82 N-108

(1724)

Deviation from the Specified Silicon Ranges in ASME Material Specifications,Section III, Division 1, and VIII, Division 1 and 2

7/1/78 N-109

(1726)

Refinement of Low Alloy Steel Heat Affected Zone under Overlay Cladding,Section III, Division 1, Class 1 Components

3/1/79 N-111

(1729)

Minimum Edge Distance-Bolting for Section III, Division 1, Class 1, 2, and

3 and MC Construction of Component Supports

3/1/79 N-114

(1732)

Hardsurfaced Valves with Inlet Connections Less Than 2-in. Nominal Pipe Size for Section III, Division 1, Class 1 and 2 Construction

1/1/79 N-115

(1733)

Evaluation of Safe Shut Down Earthquake Loadings for Section III,

Division 1, Class MC Containment Vessels

1/1/78 N-119-6 Pump Internal Items,Section III, Division 1, Class 1, 2, and 3

3/14/94 N-121

(1744)

Carbon Steel Pipe Flanges Larger than 24 in.,Section III, Division 1, Class 2 and 3 Construction

3/1/79 N-122-2 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 1 Piping,Section III, Division 1

8/20/09 N-123

(1746)

Leak Testing of Seal Welds,Section III, Division 1, Class 1, 2, and 3 Construction

3/1/79 N-124

(1747)

Requirements for Martensitic Stainless Forgings with 13% Chromium and

4% Nickel,Section III, Division 1

7/13/87 N-125

(1748)

Low Carbon Austenitic Stainless Steel Pipe Welded with Filler Metal,Section III, Division 1, Construction

7/1/78 N-126

(1754)

Hard Surfacing by the Spray-Fuse Method,Section III, Class 1, 2, and 3 Construction

7/1/88 N-127

(1755-1)

Alternative Rules for Examination of Welds in Piping,Section III, Class 1 and 2 Construction

2/20/92 N-139 Testing of Electroslag Wire and Flux for Class 1, 2, 3, MC, and CS Construction,Section III, Division 1

1/1/79 N-140

(1772)

Use of SA-453 Bolts in Service below 800°F without Stress Rupture Tests,Section III, Division 1

12/31/85 N-142-1

(1774-1)

Minimum Wall Thickness for Class 2 and 3 Valves,Section III, Division 1

1/1/80

N-147

(1781)

Use of Modified SA-487 Grade CA6NM,Section III, Division 1, Class 1, 2, 3, MC, or CS

7/1/78 N-148

(1782)

Use of Copper-Nickel Alloy 962 for Castings,Section III, Division 1, Class 3 Construction

6/30/83

RG 1.84, Rev. 39, Page 18 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-156

(1793)

Structural Steel Rolled Shapes,Section III, Division I, Class 2, 3, and MC

2/14/86 N-157

(1794)

Use of Seamless Al-Br, Alloy CDA 614 Pipe,Section III, Division 1, Class 3

1/7/83 N-158

(1795)

Examination of Weld Repairs in Forgings,Section III, Division 1, Class 1, 2, 3, MC, and CS

7/1/78 N-159

(1796)

Body Neck Thickness Determination for Valves with Inlet Connections

4-Inch Nominal Pipe Size and Smaller,Section III, Division 1, Class 1, 2, and 3

7/1/78 N-160-1 Finned Tubing for Construction,Section III, Division 1

10/14/11 N-174

(1812)

Size of Fillet Welds for Socket Welding of Piping,Section III, Division 1

1/1/81 N-176-1

(1819-1)

Use of Type XM-19 for Construction,Section III, Division 1, Class 1, 2, and 3

8/25/83 N-177

(1820)

Alternative Ultrasonic Examination Technique,Section III, Division 1

1/1/84 N-178 Use of ASTM B271, CDA 954, Alloy 9C for Class 3 Construction,Section III, Division 1

1/1/80

N-179 Openings in Valves for Section III, Division 1, Class 1, 2 and 3 Construction

7/11/80

N-180

Examination of Springs for Class 1 Component Standards Supports,Section III, Division 1

7/1/78 N-181 Steel Castings Refined by the Argon Decarburization Process,Section III,

Division 1, Construction

7/11/80

N-182 Alternate Rules for Procedure Qualification Base Material Orientation,Section III, Division 1, Class 2 and 3 Construction

7/1/81 N-183 Use of Modified SA-182 Grade F22 for Section III, Division 1, Class 1, 2 and 3 Construction

1/1/80

N-184 Roll Threading of SA-453 Bolting for Section III, Division 1, Class 1, 2, 3, or CS Construction

7/1/79 N-188-1 Use of Welded Ni-Fe-Cr-Mo-Cu (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625)

Tubing,Section III, Division 1, Class 2 and 3

8/14/96 N-189 Primary Membrane Plus Primary Bending Stress Intensity Limits for Other Than Solid Rectangular Sections for Section III, Division 1, Class MC

Construction

7/1/79 N-190

Use of SA-455 for Class 3 Components,Section III, Division 1

7/1/78 N-192-3 Use of Braided Flexible Connectors,Section III, Division 1, Class 2 and 3

1/7/15 N-193 Use of SB-61 and SB-62 Bronze for Section III, Division 1, Class 3 Flange and Socket Weld End Valves

11/21/80

N-196-1 Exemption from the Shakedown Requirements When Plastic Analysis Is Performed for Section III, Division 1, Class 1 and CS Construction

7/1/92

RG 1.84, Rev. 39, Page 19 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-204 Use of Modified SA-508, Class 3, and SA-541, Class 3 for Section III,

Division 1, Class 1, 2, and 3 Components

1/1/81 N-206 Use of ASTM B151-75 Copper-Nickel Alloy 706 Rod and Bar for Section III, Division 1, Class 3 Construction

6/30/83 N-207-1 Use of Modified SA-479 Type XM-19 for Section III, Division 1, Class 1, 2,

3, or CS Construction

1/21/85 N-212

(1693)

Welding Procedure Qualification of Dissimilar Metal Welds When Buttering with Alloy Weld Metal and Heat Treatment May Be Involved,Section III, Division 1, and Section IX

1/1/81 N-214-2 Use of SA-351 Grade CN7M, for Valves,Section III, Division 1

12/31/83 N-215 Integrally Finned Titanium Tubes,Section III, Division 1, Class 3 Construction

5/15/81 N-217-1 Postweld Heat Treatment of Weld Deposit Cladding on Classes 1, 2, 3, MC, and CS Items,Section III, Division 1

2/23/87 N-220

Code Effective Date for Component Supports,Section III, Division 1

7/13/81 N-223 Requirements for Stainless Steel Precipitation Hardening,Section III,

Division 1, Class MC

11/20/81 N-224-1 Use of ASTM A500 Grade B and ASTM A501 Structural Tubing for Welded Attachments for Section III, Class 2, 3, and MC

4/5/90

N-225 Certification and Identification of Material for Component Supports,Section III, Division 1

1/1/81 N-226 Temporary Attachment of Thermocouples,Section III, Division 1, Class 1, 2 and 3 Component Supports

1/1/80

N-227 Examination of Repair Welds,Section III, Class 2 and 3 Tanks

7/9/82 N-228 Alternate Rules for Sequence of Completion of Code Data Report Forms and Stamping for Section III, Class 1, 2, 3, and MC Construction

3/19/82 N-229 Alternate Rules for Fabrication Welding SB-148 Alloy CDA 954 for Section III, Division 1, Class 3 Construction

1/21/88 N-231 Alternate Methods for Leak Detection in the Attachment Welds of Leak Chase Channels,Section III, Division 2, Class CC

7/1/92 N-233 Alternate Rules for PWHT of P-No. 6, Group 4 Material for Section III,

Division 1, Class 3 Construction

9/17/87 N-237-2 Hydrostatic Testing of Internal Piping,Section III, Division 1, Classes 2 and 3

7/1/88 N-240

Hydrostatic Testing of Open Ended Piping,Section III, Division 1

7/1/97 N-241 Hydrostatic Testing of Piping,Section III, Division 1

7/1/97 N-243 Boundaries within Castings Used for Core Support Structures,Section III,

Division 1, Class CS

10/14/11 N-245 Use of ASTM B61-76 and B62-76 Copper Alloy Castings for Section III,

Division 1, Class 3 Construction

7/17/85 N-246-2 SB-169 Alloy C61400,Section III, Division 1, Class 3 Construction

7/27/95

RG 1.84, Rev. 39, Page 20

CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-247 Certified Design Report Summary for Component Standard Supports,Section III, Division 1, Class 1, 2, 3 and MC

4/30/93 N-248 Alternative Reference Radiographs,Section III, Division 1, Classes 1, 2, 3, MC, and CS Construction

7/1/80

N-259 Ni-Cu-Al Bolting Material SB 164 Modified,Section III, Division 1, Class 3

1/1/84 N-261 Weld Procedure Qualification for Materials with Impact Requirements for Section III, Division 1, Class 3 Construction

12/13/82 N-262 Electric Resistance Spot Welding for Structural Use in Component Supports,Section III, Division 1

7/27/91 N-265-1 Modified SA-487 Castings,Section III, Division 1, Class 1

8/14/97 N-267 Double-Wall Radiography,Section III, Division 1, Class 1 and 2

7/1/81 N-271 Simplified Method for Analyzing Flat Face Flanges with Metal to Metal Contact outside the Bolt Circle for Section III, Class 2, 3, and MC

Construction

2/14/86 N-272 Compiling Data Report Forms,Section III, Division 1

1/1/82 N-276 Welding of SA-358 Pipe,Section III, Division 1

2/14/86 N-277 Use of Type XM-19 Austenitic Stainless Steel for Section III, Division 1, Class MC Construction

9/17/80

N-280

Alternate Rules for Examination of Welds in Section III, Class 3 Storage Tanks

7/1/81 N-281 Welding Operator Performance Qualification,Section III, Division 1

7/1/81 N-282 Nameplates for Valves,Section III, Division 1, Class 1, 2, and 3 Construction

7/30/89 N-294 SB-148 Alloys 952 and 954, and SB-62 Alloy 836 Fittings,Section III,

Division 1, Class 2

7/27/95 N-295 NCA-1140, Materials,Section III, Division 1

6/30/82 N-296 Welding Material,Section III, Division 1 Construction

12/1/83 N-298 Examination of Component Supports,Section III, Division 1, Class 1, 2, 3, and MC

12/1/83 N-299-1 Use of Nickel-Chromium-Molybdenum-Columbium Alloy 625 Forgings,Section III, Division 1, Class 2 and Class 3 Components

2/23/87 N-300

Pressure-Temperature Ratings, Hydrostatic Tests, and Minimum Wall Thickness of Valves,Section III, Division 1, Class 1

12/1/83 N-302 Tack Welding,Section III, Division 1, Construction

11/28/83 N-304-4 Use of 20Cr-25Ni-6Mo (Alloy UNS N08366) Plate, Sheet, Strip, and Welded Pipe, Class 2 and 3,Section III, Division 1

1/1/03 N-309-1 Identification of Materials for Component Supports,Section III, Division 1

7/1/95 N-313 Alternative Rules for Half-Coupling Branch Connections,Section III,

Division 1, Class 2

7/1/96 N-316 Alternative Rules for Fillet Weld Dimensions for Socket Welding Fittings,Section III, Division 1, Class 1, 2, and 3

8/14/93

RG 1.84, Rev. 39, Page 21 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-317 ASTM A276 Bar,Section III, Division 1

7/1/82 N-318-5 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping,Section III, Division 1

8/20/09 N-320

Alternate PWHT for SA-487, Grade CA6NM,Section III, Division 1

12/31/83 N-321-1 Use of Modified SA-249, Grade TP 304,Section III, Division 1, Class 1

12/85/88 N-324 Qualification of Authorized Nuclear Inspector Supervisor (Concrete) and Authorized Nuclear Inspector (Concrete),Section III, Division 2, Classes CB and CC

7/27/95 N-328 Thermit Brazing or Welding of Nonstructural Attachments,Section III,

Division 1

9/17/87 N-329 Examination of Bar Material,Section III, Division 1, Class 1

10/14/11 N-336 Examination of Welds Inaccessible during Pressure Test,Section III,

Division 1, Class MC

6/30/83 N-337-1 Use of ASTM B 525-70 Grade II, Type II, Sintered Austenitic Stainless Steel for Classes 2, 3, and MC Component Standard Supports,Section III,

Division 1

3/14/94 N-339 Examination of Ends of Fillet Welds,Section III, Division 1, Classes 1, 2, and MC

9/17/84 N-341 Certification of Level III NDE Examiner,Section III, Divisions 1 and 2

7/1/88 N-342 Use of SA-249 and SA-312 Type 317 Stainless Steel,Section III, Division 1, Classes 1, 2, and 3

4/2/85 N-345-1 Attachment of AMS 5382 Alloy 31 Seat Rings by Friction Welding,Section III, Division 1, Classes 1, 2, and 3

3/28/01 N-346 Explosive Welding,Section III, Division 1

6/30/86 N-347 Continuous Electric Resistance Seam Welding of P-No. 8 Materials for Component Supports,Section III, Division 1

12/13/85 N-349 Pressure Testing Piping Systems,Section III, Division 1, Classes 2 and 3

12/13/85 N-352-1 Use of SA-638 Grade 660 Forgings and Bars below 700°F without Stress Rupture Tests,Section III, Division 1

6/30/86 N-353 Marking of SA-354 Grade BD Bolting,Section III, Division 1

9/5/88 N-354-1 Subcontracted Service,Section III, Division 2

8/14/94 N-355 Calibration Block for Angle Beam Ultrasonic Examination of Large Fittings in Accordance with Appendix III-3410

8/9/96 N-357 Certification of Material for Component Supports,Section III, Division 1, Subsection NF

7/1/88 N-359 Weld Connection for Coaxial Cylinders,Section III, Division 1, Class 1

12/31/84 N-362-2 Pressure Testing of Containment Items,Section III, Division 1, Classes 1,

2, and MC

7/1/88 N-367 SA-372 Type V, Grade 1, Class B,Section III, Division 1

2/19/89 N-368 Pressure Testing of Pump Discharge Piping,Section III, Division 1, Classes 2 and 3

7/1/95

RG 1.84, Rev. 39, Page 22 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-370-2 Modified SA-705 Type XM-13 Forgings,Section III, Division 1

8/14/97 N-371-1

12Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals,Section III,

Division 1

7/18/88 N-372 SB-163 Ni-Fe-Cr-Mo-Cu Alloy 825 (UNS N08825) Tubing,Section III,

Division 1

12/31/83 N-376 Pressure Testing of Embedded Class 2 and 3 Piping,Section III, Division 1

7/30/86 N-377 Effective Throat Thickness of Partial Penetration Groove Welds,Section III, Division 1, Classes 1, 2, and 3

12/31/83 N-378 Examination of Piping Support Material,Section III, Division 1, Class 1

10/28/86 N-379-1 Bimetallic Tubing,Section III, Division 1, Class 1

7/18/91 N-384-1 Use of Prepackaged General Purpose Cement Grouts, Epoxy Grouts, and Epoxy Bonding,Section III, Division 2, Class CC

7/27/91 N-387 Certification of Level III NDE Examiner,Section III, Division 2

9/18/01 N-388 Component Support Bolting,Section III, Division 1, Classes 2, 3, and MC

2/23/87 N-391-2 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Class 1 Piping,Section III, Division 1

5/4/04 N-392-3 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Classes 2 and 3 Piping,Section III, Division 1

5/4/04 N-393 Repair Welding Structural Steel Bolted Shapes and Plates for Component Supports,Section III, Division 1

7/27/95 N-394 Restricting Lift to Achieve Reduced Relieving Capacities of Full Lift, Nozzle Type, and Flat Seated Safety and Safety Relief Valves for Compressible Fluid Applications,Section III, Division 1, Classes 2 and 3

3/2/01 N-395 Laser Welding,Section III, Division 1

9/18/01 N-403 Reassembly of Subsection NF Component and Piping Supports,Section III,

Division 1

7/1/95 N-410

Certified Relieving Capacities of Pressure Relief Valves Having Set Pressure of 3 psig up to but Not Including 15 psig Installed for Overpressure Protection of Compressible Fluid Systems,Section III,

Division 1, Classes 2 and 3

3/14/00

N-412 Alternative Rules for Witnessing the Piping System Pressure Tests of Classes 1, 2, and 3 Piping Systems,Section III, Division 1

4/15/91 N-413 Minimum Size of Fillet Welds for Subsection NF Linear Type Supports,Section III, Division 1

2/14/88 N-414 Tack Welds for Class 1, 2, 3 and MC Components and Piping Supports

2/20/92 N-418-1 Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028 and UNS N08904) Tubing,Section III, Division 1, Classes 2 and 3

7/27/95 N-420

Linear Energy Absorbing Supports for Subsection NF, Classes 1, 2, and 3 Construction

1/1/99 N-421 Brazing Using a Radiant Energy Source,Section III, Division 1

6/30/86

RG 1.84, Rev. 39, Page 23 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-433 Non-Threaded Fasteners for Section III, Division 1, Class 1, 2, and 3 Components and Piping Supports

12/16/95 N-438-4 UNS N08367 Material,Section III, Division 1, Class 2 and 3 Construction

7/1/98 N-439-1 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Forgings, Plate, Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction,Section III,

Division 1

9/18/01 N-440-1 Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction,Section III, Division 1

9/18/01 N-441-2 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction,Section III, Division 1

9/18/01 N-442

1977 Addendum to ANSI/ASME PTC 25.3-1976, Safety and Safety Relief Valves, Class 1, 2, 3, and MC,Section III, Division 1

3/8/92 N-443-2 High Yield Strength Cr-Mo Steel, Class 1 Components,Section III,

Division 1

1/1/01 N-451 Alternative Rules for Analysis of Piping under Seismic Loading, Class 1,Section III, Division 1

8/14/96 N-459 SA-508 Basic Oxygen-Ladle Furnace Process for Code Construction,Section III, Division 1

3/14/94 N-462 Alternative Rules for Analysis of Piping Products under Seismic Loading, Class 2 and 3 Piping Systems,Section III, Division 1

5/24/96 N-464 Laser Welding of Lap Joints,Section III, Division 1, Classes 2 and 3 Construction

5/9/03 N-466-1 Modified 9Cr-1Mo Material,Section III, Division 1, Classes 1, 2, and 3

8/14/97 N-468 Alternative Method of Earthquake Description for Class 2 and 3 Piping of Low Seismicity Sites,Section III, Division 1

1/1/92 N-470

Class MC Material Requirements [NE-2121(c)],Section III, Division 1

3/8/92 N-474-2 Design Stress Intensities and Yield Strength Values for UNS N06690 with a Minimum Specified Yield Strength of 35 ksi, Class 1 Components,Section III, Division 1

1/1/00

N-475 Materials in Inventory,Section III, Division 1

12/11/92 N-476 Class 1, 2, 3, and MC Linear Component SupportsDesign Criteria for Single Angle Members,Section III, Division 1, Subsection NF

7/1/96 N-482 Direct Quenched Stainless Bar, ASTM A 479-88b,Section III, Division 1

3/5/93 N-484-1 Real Time Radioscopic Examination of Welds,Section III, Division 1

12/16/94 N-492-1 Grade 9 Titanium Alloy Tubing,Section III, Division 1, Class 1, 2, and 3

1/1/00

N-493 Alternative Radiographic Acceptance Criteria for Vessels Used as Shipping Casks,Section III, Division 1, Class 1

2/9/15 N-497-1 Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials,Section III, Division 1, Class 2 and 3 Construction

1/1/99 N-501 Alternative Rules for NCA-3800, 1990 Addenda,Section III, Division 1

12/31/93 N-502 SA-268, Grade 26-3-3 (UNS S44660),Section III, Classes 2 and 3

1/1/00

RG 1.84, Rev. 39, Page 24 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

N-507 Identification of Welders,Section III, Division 2

7/27/05 N-540

Guidance on Implementation of NCA-3800 Revisions in 1994 Addenda,Section III, Division 1

6/30/98 N-549 Stamping and Flow Certification of Rupture Disk Devices, Classes 2 and 3,Section III, Division 1

3/19/99 N-550

Alternative Rules for Examination of Welds in Instrument Tubing, Classes 1 and 2,Section III, Division 1

5/20/01 N-551 Alternative Methods of Analysis, NC/ND-3673.1, Class 2 and 3 Applications,Section III, Division 1

8/14/97 N-558 Stamping of Class 2 Vessels Fabricated to Subsection NB,Section III,

Division 1

2/11/16 N-559 SA-203, Grade E (Plate) and SA-350, Grade LF3 (Forging), 3.5% Ni Nominal Composition Used in Class 1 Construction,Section III, Division 1

5/24/99 N-572 Use of SG-425 (UNS N08825) Bar and Rods for Class 1 Construction,Section III, Division 1

5/24/99 N-596 Use of Alternative Reference Specimens,Section III, Division 1

2/20/04 N-608 Applicable Code Edition and Addenda, NCA-1140(a)(2),Section III,

Division 1

5/20/01 N-611 Use of Stress Limits as an Alternate to Pressure Limits Subsection NC/ND-3500,Section III, Division 1

7/1/2013 N-646 Alternative Stress Intensification Factors for Circumferential Fillet Welded or Socket Welded Joints for Class 2 or 3 Piping,Section III, Division 1

11/10/14 N-657 Use of the N-1A Data Report for Spent Fuel Canisters,Section III,

Division 1

2/9/15 N-732 Magnetic Particles Examination of forgings for Construction,Section III,

Division 1

10/14/11 N-744 Use of Metric Units Boiler and Pressure Vessel Code,Section III, Divisions

1 and 3, and Section V and IX

2/11/16 N-802 Rules for Repair of Stamped Components by the N-Certificate Holder That Originally Stamped the Component,Section III, Division 1

8/12/12

1141-7 Foreign Produced Steel

7/23/76

1434-1 Postweld Heat Treatment of SA-487 Class 8N Steel Castings,Section III

1/1/78

1461-1 Electron Beam Welding,Section I, III, and VIII, Division 1 and 2

2/16/77

1470-2 External Pressure Charts for High-Strength Carbon Steels and for Low-Alloy Steels,Section VIII, Division 1 and 2, and Section III

11/4/74

1471-1 Vacuum Electron Beam Welding of Tube Sheet Joints,Section III

1/1/78

1475-1 Ferritic-Austenitic Stainless Steel Seamless Tubes for Section III,

Class 2 and 3 Construction

7/1/75

1477-1 Use of 1970 Addenda of ANSI B31.7,Section III

1/1/78

1494-1 Weld Procedure Qualification Test,Section III

1/1/78

1506 Stress Intensification Factors,Section III, Class 2 and 3 Piping

1/1/78

RG 1.84, Rev. 39, Page 25 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

1515 Ultrasonic Examination of Ring Forgings for Shell Sections,Section III,

Class 1 Vessels

7/1/77

1529 Materials for Instrument Line Fittings,Section III

7/1/73

1531 Electrical Penetrations, Special Alloys for Electrical Penetration Seals,Section III

3/21/77

1532 Section III, Class 3 Components Made of 8 Percent and 9 Percent Nickel Steel

1/1/78

1533 Pressure Temperature Ratings of SA-351 Grades CF8A, CF3, and CF3M,

Section III

7/1/75

1535-2 Hydrostatic Testing of Section III, Class 1 Valves

3/21/77

1536 Closing Seam for Electrical Penetrations for Section III, Class 2, 3, and MC

7/1/77

1553-1 Upset Heading and Roll Threading of SA-453 for Bolting in Section III

1/1/76

1555-1 Certification of Safety Relief Valves,Section III, Division 1

1/1/78

1567 Testing Lots of Carbon and Low Alloy Steel Covered Electrodes,Section III

1/1/78

1568 Testing Lots of Flux Cored and Fabricated Carbon and Low Alloy Steel Welded Electrodes,Section III

1/1/78

1573 Vacuum Relief Valves,Section III

1/1/78

1574 Hydrostatic Test Pressure for Safety Relief Valves,Section III

12/31/74

1580-1 Buttwelded Alignment Tolerance and Acceptable Slopes for Concentric Centerlines for Section III, Class 1, 2, and 3 Construction

1/1/78

1581 Power-Operated Pressure Relief Valves,Section III

3/1/79

1583 Use of 80-40 Carbon Steel Castings,Section III

3/21/77

1587 SA-508 Class 3 Forgings with 0.4/1.0 Ni for Section III and VIII,

Division 2 Construction

12/31/75

1590

Chemical Analysis Variations,Section III Construction

3/21/77

1601 Limits of Reinforcement for Two-Thirds Area,Section III, Class 1

7/1/74

1602-1 Use of SB-42 Alloy 122, SB-111 Alloys 122, 715 and 706 and SB-466 Alloys 706 and 715,Section III, Class 2 and 3 Components

12/31/74

1603 Toughness Tests When Cross-Section Limits Orientation and Location of Specimens

7/1/74

1605 Cr-Ni-Mo-V Bolting Material for Section III, Class 1 Components

3/17/80

1608-1 Use of ASME SB-265, SB-337, SB-338, and SB-381, Grades 1, 2, 3, and 7 Unalloyed Titanium and ASTM B-363 Titanium Welding Fittings,Section III, Class 2 and 3 Components

3/21/77

1613 Use of SA-372 Class IV Forgings,Section III Construction

1/1/78

1614 Hydrostatic Testing of Piping Prior To or Following the Installation of Spray Nozzles for Section III, Classes 1, 2, and 3 Piping Systems

1/1/79

1615 Use of A587-73,Section III, Class 3 Construction

1/1/78

RG 1.84, Rev. 39, Page 26 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

1616 Ultrasonic Examination of Seamless Austenitic Steel Pipe,Section III,

Class 1 Construction

7/1/75

1622 PWHT of Repair Welds in Carbon Steel Castings,Section III, Class 1, 2, and 3

1/1/76

1623 Design by Analysis for Section III, Class 1 Sleeve-Coupled and Other Patented Piping Joints

3/1/79

1625 Repair of Section III, Class 2 and 3 Tanks

12/31/74

1633 Brazing of Seats to Class 1, 2, and 3 Valve Body or Bonnets,Section III

1/1/78

1637 Effective Date for Compliance with NA-3700 of Section III

1/1/75

1645 Use of DeLong Diagram for Calculating the Delta Ferrite Content of Welds in Section III, Class 1, 2, and CS Construction

1/1/76

1648 SA-537 Plates for Section III, Class 1, 2, 3, and MC Components

7/1/76

1649 Modified SA-453-GR 660 for Class 1, 2, 3, and CS Construction

1/1/76

1650

Use of SA-414 Grade C for Class 2 and 3 Components,Section III,

Division 1

12/31/74

1651 Interim Requirements for Certification of Component Supports,Section III,

Subsection NF

3/1/79

1657 Stress Criteria for Class 2 and 3 Atmospheric and Low Pressure

(0-15 psig) Steel Storage Tanks

7/1/77

1659 Interconnection of Two Piping Systems for Section III, Class 1, 2, and 3 Construction

7/1/77

1661 Postweld Heat Treatment P-No.1 Materials for Section III, Class 1 Vessels

1/1/78

1662 Shop Assembly of Components, Appurtenances, and Piping Subassemblies for Section III, Class 1, 2, 3, and MC Construction

1/1/78

1664 Use of Cr-Ni-Fe-Mo-Cu-Cb Stabilized Alloy Cb-3 for Section III,

Class 2 and 3 Construction

3/21/77

1666 Use of SB-12, Alloy 122 for Class 2 and 3 Construction

7/1/75

1672 Nuclear Valves for Section III, Division 1, Class 1, 2, 3 Construction

3/21/77

1675 Tubesheet to Shell or Formed Head Weld Joints,Section III, Class 1 Vessels

7/1/76

1676 Clarification of Stress Intensities in Curved Pipe or Welded Elbows,Section III

7/1/76

1678 Butterfly Valves of Circular Cross Section Larger Than 24 in. NPS for Section III, Class 2 and 3 Construction

1/1/80

1682-1 Alternate Rules for Material Manufacturers and Suppliers,Section III,

Subarticle NA-3700

12/31/75

1683-1 Bolt Holes for Section III, Class 1, 2, 3 and MC Component Supports

7/1/76

1684 A637 Grade 718 for Bolting Class 1 and 2 Construction

1/1/76

1685 Furnace Brazing Section III, Class 1, 2, 3 and MC Construction

1/1/78

1686 Furnace Brazing,Section III, Subsection NF, Component Supports

1/1/78

RG 1.84, Rev. 39, Page 27 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

1690

Stock Materials for Section III Construction,Section III, Division 1

1/1/77

1691 Ultrasonic Examination in Lieu of Radiography of Repair Welds for Vessels,Section III, Class 1

1/1/78

1703 Brazing of Copper Alloys,Section III, Class 2

1/1/78

1706 Data Report Forms for Component Supports,Section III, Class 1, 2 and 3

12/31/75

1713 Small Material Items,Section III, Division 1, Class 1, 2, 3, CS and MC

12/31/75

1718 Design of Structural Connections for Linear Type Component Supports,Section III, Division 1, Class 1, 2 and 3 and MC

7/1/76

1719 Single-Welded, Full-Penetration Sidewall Butt Joints in Atmospheric Storage Tanks,Section III, Division 1, Class 2

7/1/76

1728 Steel Structural Shapes and Small Material Products for Components Supports,Section II, Division 1 Construction

7/1/77

1740

Weld Metal Test,Section III, Class 1, 2, 3, MC, and CS

7/1/76

1741-1 Interim Rules for the Required Number of Impact Tests for Rolled Shapes,Section III, Division 1, Subsection NF, Components Supports

1/1/78

1742 Use of SB-75 Annealed Copper Alloy 122,Section III, Division 1, Class 2 Construction

7/1/76

1743 Use of SB-98 Cu-SiB Rod CDA651 Section III, Division 1, Class 2 Components

7/1/76

1760

Maximum Dimensions for Isolated Pores in WeldsClass 1 Components,Section III, Division 1

7/1/77

1765 Machining after Hydrostatic Testing Class 2 and 3 Construction,Section III, Division 1

7/1/77

1766 Testing Requirements for Welding Materials, Class 1, 2, 3, MC, and CS

Construction,Section III, Division 1

7/1/77

1767 Examination of Tubular Products without Filler MetalClass 1 Construction,Section III, Division 1

1/1/77

1768 Permanent Attachments to Containment VesselsClass MC,Section III,

Division 1

1/1/78

1769-1 Qualification of NDE Level III Personnel,Section III, Division 1

10/1/77

1773 Use of Other Product Forms of Materials for Valves,Section III,

Division 1

7/1/77

1775 Data Report Forms for Core Support Structures, Class CS,Section III,

Division 1

8/13/79

1777 Use of SA-106, Grade C in Class MC Construction,Section III, Division 1

7/1/77

1787 Depth of Weld Repairs for Forgings,Section III, Division 1, Class 1, 2, 3, MC and CS Construction

1/1/78

1798 Use of ASTM A352-75, Grades LCA and LCC,Section III, Division 1, Class 1, 2, and 3

1/1/78

RG 1.84, Rev. 39, Page 28 CODE CASE

NUMBER

TABLE 3 ANNULLED UNCONDITIONALLY APPROVED SECTION III

CODE CASES

ANNULMENT

DATE

1808 F-Number Classification of Low Alloy and Carbon Steel Bare Rod Electrodes, Sections I, II, III, IV, V, VIII, and IX.

1/1/78

1810

Testing Lots of Carbon Steel Solid, Bare Welding Electrode or Wire,Section III, Division 1, Class 1, 2, 3, MC, and CS

3/3/80

1819 Use of Type XM-19 for Construction,Section III, Division 1, Class 1, 2, 3

1/1/78

RG 1.84, Rev. 39, Page 29

4. Annulled Conditionally Acceptable Section III Code Cases

The NRC conditionally approved the Code Cases listed in Table 4; however, they were subsequently annulled by ASME. To assist users, new annulled Code Cases are shaded in grey to distinguish them from those listed in previous versions of this guide.

Table 4. Annulled Conditionally Acceptable Section III Code Cases

CODE

CASE

NUMBER

TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III

CODE CASES

TITLE/CONDITION

ANNULMENT

DATE

N-11-5

(1414-5)

High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.

8/29/80

N-31-1 Elastomer Diaphragm Valves,Section III, Division 1, Classes 2 and 3 Each applicant who applies the Code Case should indicate in the referencing safety analysis report that the service life of the elastomer diaphragm should not exceed the manufacturers recommended service life. This recommended service life should not exceed one-third of the minimum cycle life as established by the requirements of Paragraph 3 of the Code Case. In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.

7/1/93 N-32-4 Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III,

Division 1 Construction The acceptance of Code Case N-32-4 was based on the following clarification and interpretation. Code Case N-32-4 does not replace Paragraph NC/ND-6129, Provisions for Embedded or Inaccessible Welded Joints in Piping, of the Code.

The intent of the Code Case is to (1) provide additional testing above Code requirements and (2) permit liquid penetrant or magnetic particle testing in place of radiographic testing for Class 3 piping with a 3/8-inch nominal wall thickness or less.

Paragraph (1) contains an additional requirement to the Code. It was, therefore, acceptable but unnecessary to include in the Code Case. Paragraph (2) is a variation in the volumetric examination technique and was acceptable as written.

Paragraph (3) contains an additional requirement and is not a relaxation of the Code. It was, therefore, acceptable but unnecessary to include in the Code Case.

3/16/84 N-92

(1698)

Waiver of Ultrasonic Transfer Method,Section III, V, and VIII, Division 1 The material from which the basic calibration block is fabricated should be of the same product form, alloy, and heat treatment as the material being examined.

Alloys of equivalent P-number groupings may be used for the fabrication of calibration blocks if adjustments to signal height can be made to compensate for sound beam attenuation difference between the calibration block and the material under examination by following the transfer method procedure in the

1977 Edition of ASME Code,Section V, Article 5, T-535.1(d).

7/13/81 N-100

(1711)

Pressure Relief Valve Design Rules,Section III, Division 1, Class 1, 2 and 3 The safety analysis report should provide the following information:

(1) If stress limits are used in excess of those specified for the upset operating condition, it should be demonstrated how the pressure relief function is ensured. Refer to paragraph 3.1,Section I, of the Code Case for Class and paragraph 3.2,Section II, of the Code Case for Class 2 and 3 pressure relief

1/1/83

RG 1.84, Rev. 39, Page 30

CODE

CASE

NUMBER

TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III

CODE CASES

TITLE/CONDITION

ANNULMENT

DATE

valves.

(2) If Code Case 1660 is to be used in conjunction with the Code Case, it should be stated that the stress limits of Code Case 1660 supersede those of paragraph 3.2(b),Section I, of Code Case 1711. Functional assurance of (1)

above is required in all situations.

N-106-2

(1720-2)

Weld End Preparation for Section III, Division 1 Construction The acceptance of weld-end preparations other than those shown in Figures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.

8/14/93 N-110

(1727)

Alternate Test Fluids,Section III, Division 1 The applicant should provide justification in the referencing safety analysis report for the fluid selected for use in the pressure test. The information provided should demonstrate that the fluid selected will not have deleterious effects on the material of the pressure boundary and that the fluid may be safely used at the specified temperature and pressure of the test. When the fluid selected for use is the operating fluid, additional information is not required.

1/1/79 N-116

(1734)

Weld Design for Use for Section III, Division 1, Class 1, 2, 3 and MC

Construction of Component Supports If the configuration of Figure 1 of the Code Case is used for Class 1 and MC

component supports, full-penetration welds should be used. The application of the configuration shown in Figures 2 and 3 should be restricted to the welding of cans for spring encapsulation in spring hangers. In Figure 3, the length of the leg of the fillet weld adjacent to the plate should be equal to the thickness of the exposed edge of the plate. In addition, the leg of the fillet weld adjacent to the shell should be equal to the thickness of the exposed end of the shell.

1/1/78 N-146-1

(1780-1)

Hydrostatic Testing and Stamping of Components,Section III, Division 1, Construction On a generic basis, the application of the Code Case is limited to pumps and valves. Application to other components should be treated on a case-by-case basis. Each licensing application in which the Code Case is to be used should contain information showing that, as a minimum, the closure fixture will impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly. A closure fixture for the part being tested that is similar in size and shape to the actual mating part is considered adequate to impose these loads. It is not intended that the hydrostatic testing simulate piping reaction loadings.

1/1/82 N-175

(1818)

Welded Joints in Component Standard Supports,Section III, Division 1 That portion of the unwelded housing that is limited to 90 degrees maximum should include a minimum of two sectors that are uniform in length.

7/1/79 N-199 Intervening Elements,Section III, Division 1, Classes 1, 2, 3, and MC

Component Construction The applicants should provide information in the referencing safety analysis report that demonstrates that all intervening elements have been designed in compliance with the requirements of the respective design specification.

1/1/81

RG 1.84, Rev. 39, Page 31 CODE

CASE

NUMBER

TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III

CODE CASES

TITLE/CONDITION

ANNULMENT

DATE

N-208-2 Fatigue Analysis for Precipitation Hardening Nickel Alloy Bolting Material to Specification SB-637 N07718 for Class 1 Construction,Section III, Division 1

(1) In Figure A, the words No mean stress shall be implemented with the understanding that it denotes Maximum mean stress.

(2) In Figure A, y shall be implemented with the understanding that it denotes max.

10/14/11 N-238 High Temperature Furnace Brazing of Seat Rings in Valve Bodies or Bonnets for Section III, Division 1, Class 1, 2, and 3 Valves The furnace brazing process procedure qualification should verify nonsensitization, as given in Practices A or E of ASTM A 262-70, Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels (Ref. 8), or ASTM A 708-74, Practice for Detection of Susceptibility to Intergranular Corrosion in Severely Sensitized Austenitic Stainless Steels (Ref. 9), whenever materials subject to sensitization are to be brazed. Documentation is required for the use of a nonsensitizing brazing procedure for valves produced to this Code Case.

1/1/82 N-242-1 Materials Certification,Section III, Division 1, Classes 1, 2, 3, MC, and CS

Construction Applicants should identify, in their safety analysis reports, the components and supports for which the Code Case is being applied and should specify the respective paragraphs of the Code Case.

6/30/84 N-252 Low Energy Capacitive Discharge Welding Method for Temporary or Permanent Attachments to Components and Supports,Section III, Division 1, and XI

The applicant should indicate, in the safety analysis report, the application, the material, and the material thickness to which the strain gage or thermocouple will be attached by CD welding.

7/1/82 N-260-2 Weld Repair of SA-182 Type 316 Forgings,Section III, Division 1, Classes 1, 2,

3, and MC

Type 308L welding materials should not be used to repair Grade F 316 N

forgings because of the difference in strength levels.

12/5/88 N-263 Alternate Thread Forms, Series and Fits for Component Supports,Section III,

Division 1 The safety analysis report should do the following:

(1) Describe the application.

(2) Justify the need for the use of the Code Case.

(3) Demonstrate that the support design will withstand maximum conditions of loading with the worst combination of thread tolerance.

3/17/83 N-274 Alternative Rules for Examination of Weld Repairs for Section III, Division 1 Construction The ultrasonic examination procedures shall be proven by actual demonstration to the satisfaction of the authorized nuclear inspector that the procedures are capable of detecting unacceptable cracks in accordance with Section XI,

requirements.

6/30/86 N-275 Repair of Welds,Section III, Division 1 Use of the Code Case applies only when the removal of an indication requires that the full weld thickness be removed and when the backside of the weld

12/31/83

RG 1.84, Rev. 39, Page 32 CODE

CASE

NUMBER

TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III

CODE CASES

TITLE/CONDITION

ANNULMENT

DATE

assembly joint is not accessible for the removal of examination material. If an indication is removed and weld-metal layers still remain, gouging through the wall to qualify for use of the Code Case is not acceptable. Instead, the cavity must be examined when such an indication has been removed.

N-279 Use of Torquing as a Locking Device for Section III, Division 1, Class 1, 2, 3, and MC Component Supports When torquing or other preloading is used as a locking device and the joint is later unloaded or disassembled, the bolting should be replaced unless it can be demonstrated or proved to the authorized nuclear inspector that the original bolting has not been permanently strained.

7/13/81 N-292 Depositing Weld Metal Prior to Preparing Ends for Welding,Section III,

Division 1, Class 1, 2, and 3 Class 3 piping that is longitudinally welded and that has a weld efficiency factor of 1.0, as selected from ASME Code, Table ND-3613.4-1, Weld Joint Efficiency Factor, must receive a 100-percent volumetric examination (radiographic testing or ultrasonic testing) of the deposited weld metal in accordance with ASME Code, ND-5000, Examination.

2/20/04 N-310-1 Certification of Bolting Materials,Section III, Division 1, Class 1, 2, 3, MC, and CS

Each applicant who applies the Code Case should include the answers to the following questions in the referencing safety analysis report:

(1)

Why does the bolting not meet ASME Code, NCA-3800 (or NA-3700)?

(2)

Where will the bolting be used in the plant?

(3)

How will the applicant show that the bolting material properties required by the equipment support design specification will be present in the actual bolting material?

7/1/82 N-314 Alternate Rules for Thread Engagement,Section III, Division 1 Applicants should identify the following items in their safety analysis report:

(1)

the minimum length of thread engagement

(2)

the procedure used to establish thread engagement

5/11/84 N-348 N-348-1 N-348-2 Use of SA-574 Socket Weld Head Cap Screws,Section III, Division 1 Applicants safety analysis reports should justify why the use of these socket head cap screws will not result in early failure from stress-corrosion cracking.

9/7/85

2/20/89

8/14/93 N-350

Postweld Heat Treatment Thickness of Material,Section III, Division 1 Applicants wishing to use this Code Case for materials other than P-1 materials should demonstrate that the use of this Code Case will not adversely affect the required material properties.

9/5/85 N-383-1 Weld Repair of SA-182 Austenitic Forgings,Section III, Division 1, Classes 1, 2, and 3 Applicants who apply the provisions of this Code Case to permit material manufacturers to weld repair austenitic forgings without resolution heat treatment should give the NRC staff (through the safety analysis report) a justification as to why this is acceptable for their applications, including their evaluation of the susceptibility for stress-corrosion cracking.

9/5/85

RG 1.84, Rev. 39, Page 33 CODE

CASE

NUMBER

TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III

CODE CASES

TITLE/CONDITION

ANNULMENT

DATE

N-397 Alternative Rules to the Spectral Broadening Procedures of N-1226.3 for Classes 1, 2, and 3 Piping,Section III, Division 1 The Code Case is acceptable for specific plant applications on a case-by-case basis, pending revision of RG 1.122, Development of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components (Ref. 10).

2/20/87 N-398 Reporting of Charpy-V Notch Test Results,Section III, Division 1 The Code Case is not acceptable for steam generator or reactor coolant pump supports. Applicants wishing to use this Code Case should indicate in the safety analysis report the component supports to which the Code Case is applied for review on a case-by-case basis.

2/20/87 N-404 Annealed Alloy UNS N06625 Over UNS N06600 Bimetallic Tubing,Section III, Division 1, Class 1 The outside layer of the bimetallic tubing should be limited to a minimum of

5 percent and to a maximum of 40 percent of the wall thickness. The tolerance on the outside layer of material should not exceed -0.000 to +0.007 inch of the specified design wall thickness.

12/11/95 N-411-1 Alternative Damping Values for Response Spectra Analysis of Class 1, 2, and 3 Piping,Section III, Division 1

(1)

The Code Case damping should be used completely and consistently, if it is used at all. (For equipment other than piping, the damping values specified in RG 1.61, Damping Values for Seismic Design of Nuclear Power Plants (Ref. 11), should be used.)

(2)

The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been employed. Such use is to be limited only to response spectral analyses [similar to that used in the study supporting its acceptance, NUREG/CR-3526, Impact of Changes in Damping and Spectrum Peak Broadening on the Seismic Response of Piping Systems (Ref. 12)]. The acceptance of the use with other types of dynamic analyses (e.g., time-history analyses or independent support motion method) is pending further justification.

(3)

When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and online mounted equipment should be checked.

(4)

This Code Case is not appropriate for analyzing the dynamic response of piping systems using supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420).

(5) This Code Case does not apply to piping in which stress corrosion-cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.

5/5/00

N-430

Alternative Requirements for Welding Workmanship and Visual Acceptance Criteria for Class 1, 2, 3 and MC Linear-Type and Standard Supports,Section III, Division 1

(1)

The applicant should demonstrate that the applicable supports are not subject to cyclic loading in excess of 20,000 cycles.

(2)

The first sentence of 3.0(f)(1) should be replaced with the following: For material 3/8 in. and less nominal thickness, undercut depth of 1/32 in. on one side of the member for the full length of the weld, or 1/32 i

n. on one

7/1/93

RG 1.84, Rev. 39, Page 34 CODE

CASE

NUMBER

TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III

CODE CASES

TITLE/CONDITION

ANNULMENT

DATE

side for one-half the length of the weld, and 1/16 in. for one-fourth of the length of the weld on the face of a rectangular tube or one-fourth the length of the weld on the same side of the member is acceptable.

N-595-4 Requirements for Spent Fuel Storage Canisters,Section III, Division 1 The canisters must be made from austenitic stainless steel Type 304 or 316.

10/14/11 N-656 Rules for the Construction of Inner Transportation Containments,Section III,

Division 3 The inner transportation containment must contain only solid and dry material.

5/11/10

1361-2 Socket Welds,Section III

Code Case 1361-2 was acceptable when used in connection with Section III,

Paragraph NB-3356, Fillet Welds.

3/1/79

1412-4 Modified High Yield Strength Steel for Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case. The material given in the Inquiry section of the Code Case should be SA-508, Class 4b, instead of SA-508, Class 4.

1/1/77

1423-2 Wrought Type 304 and 316 with Nitrogen Added, Sections I, III, VIII, Divisions 1 and 2 Code Case 1423-2 was acceptable subject to compliance with the recommendations in RG 1.31, Control of Ferrite Content in Stainless Steel Weld Metal (Ref. 13), and RG 1.44, Control of the Use of Sensitized Stainless Steel (Ref. 14).

7/1/77

1521-1 Use of H-Grades of SA-240, SA-479, SA-336, and SA-358,Section III

Code Case 1521-1 was acceptable subject to compliance with the recommendations contained in RG 1.31 (Ref. 13) and RG 1.44 (Ref. 14).

1/1/78

1528-3 High Strength Steel SA-508, Class 2 and SA-541, Class 2 Forgings,Section III,

Class 1 Components Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.

1/1/78

1569 Design of Piping for Pressure Relief Valve Station,Section III

Code Case 1569 was acceptable subject to compliance with the recommendations in RG 1.67, Installation of Over-Pressure Protection Devices (Ref. 15).

7/1/79

1606-1 Stress Criteria Section III, Classes 2 and 3 Piping Subject to Upset, Emergency, and Faulted Operating Conditions Code Case 1606-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.

7/1/77

1607-1 Stress Criteria for Section III, Classes 2 and 3 Vessels Designed to NC/NC-3300

Excluding the NC-3200 Alternate Code Case 1607-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code

7/1/77

RG 1.84, Rev. 39, Page 35 CODE

CASE

NUMBER

TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III

CODE CASES

TITLE/CONDITION

ANNULMENT

DATE

Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.

1635-1 Stress Criteria for Section III, Class 2 and 3 Valves Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1635-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class

2 and 3 components for fluid systems. The design specifications should establish and justify these designations.

7/1/77

1636-1 Stress Criteria for Section III, Class 2 and 3 Pumps Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1636-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.

7/1/77

1689-1 Alternate PWHT Time and Temperature for SA-182 Grade F-22, SA-387 Grade 22, Class 2, and SA-335 Grade P-22 Section III, Class 1, 2, 3 and CS

The alternate postweld heat treatment (PWHT) should be prequalified along with the applicable welding procedure in accordance with Section IX.

1/1/78

1783-1 Qualification of Nondestructive Examination Personnel,Section III, Division 1 The first sentence of Paragraph 1 of the Code Case should be replaced with the following: The certification of the Level III nondestructive examination personnel for the purpose of this Section of the Code will be the responsibility of the employer of the Level III individual. If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder.

1/1/79

RG 1.84, Rev. 39, Page 36

5. Code Cases Superseded by Revised Code Cases

The Code Cases listed in Table 5 were approved in prior versions of this guide and have since been superseded by revised Code Cases (on or after July 1, 1974). The date in Column 3 indicates the date on which the ASME approved the revision to the Code Case. Note that the NRC unconditionally approved the Code Cases listed without conditions. The versions of the Code Cases listed in Table 5 cannot be applied by the licensee or applicant for the first time after the effective date of this RG. To assist users, changes to superseded Code Cases are shaded in grey to distinguish them from those listed in previous versions of this guide. (Note: The NRC did not approve some of these Code Cases in previous versions of this guide.)

Table 5. Section III Code Cases That Have Been Superseded by Revised Code Cases on or after July 1, 1974

CODE CASE

NUMBER

TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED

BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION

DATE

N-4-11

(1337-11)

N-4-12 Special Type 403 Modified Forgings or Bars,Section III, Division 1, Class 1 and CS

1/12/05

2/12/08 N-5

(1344-5)

Nickel-Chromium, Age-Hardenable Alloys (Alloy X750),Section III

12/13/82 N-7

(1358-5)

High Yield Strength Steel,Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.

12/13/82 N-20

(1484-3)

N-20-1 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at Nickel-Iron-Chromium Alloy 800 at a Specified Minimum Yield Strength of

40.0 ksi,Section III, Division 1, Class 1

9/5/85

12/7/87 N-20-2 N-20-3 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at Nickel-Iron-Chromium Alloy 800 at a Specified Minimum Yield Strength of

40.0-ksi and Cold Worked Alloy 800 at a yield strength of 47.0-ksi,Section III,

Division 1, Class 1

11/30/88

2/26/99 N-31

(1540-2)

Elastomer Diaphragm Valves,Section III, Class 2 and 3 Each applicant who applies the Code Case should indicate in the referencing safety analysis report that the service life of the elastomer diaphragm should not exceed the manufacturers recommended service life. This recommended service life should not exceed one-third of the minimum cycle life as established by the requirements of Paragraph 3 of the Code Case. In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.

7/18/85 N-55

(1609-1)

Inertia and Continuous Drive Friction Welding,Section I, III, IV, VIII,

Division 1 and 2, and IX

4/5/84 N-60

(1618-2)

N-60-1 Material for Core Support Structures,Section III, Division 1, Subsection NG

Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition.

5/25/83

9/17/84 N-60-2 N-60-3 N-60-4 Material for Core Support Structures,Section III, Division 1, Subsection NG

9/5/85

5/13/91

2/15/94 Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition. For SA-479 material, the maximum yield strength should not exceed 90,000 pounds

RG 1.84, Rev. 39, Page 37 CODE CASE

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DATE

per square inch (psi) because of the susceptibility of this material to environmental cracking.

N-60-5 Material for Core Support Structures,Section III, Division 1, Class 1 The maximum yield strength of strain-hardened austenitic stainless steel shall not exceed 90,000 psi because of the susceptibility of this material to environmental cracking.

2/20/04 N-62-2

(1621-2)

N-62-3 N-62-4 N-62-5 N-62-6 Internal and External Valve Items,Section III, Division 1, Class 1, 2 and 3 Line Valves The Code Case requires Class 1 and Class 2 valve manufacturers to meet the provisions of Section III, Article NCA-4000, and Class 3 valve manufacturers should also meet the provisions of Article NCA-4000.

7/18/85

9/5/85

7/24/89

12/11/89

5/11/94 N-71-7

(1644-7)

N-71-8

(1644-8)

Additional Materials for Component Supports,Section III, Division 1, Subsection NF, Class 1, 2, 3 and MC Component Supports The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that (1) the impact test results for the material meet the Code requirements and (2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.

5/15/78

1/7/80

N-71-9

(1644-9)

Additional Materials for Component Supports Fabricated by Welding,Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports In the last sentence of Paragraph 5.3 of the Code Case, reference should be made to Paragraph 4.5.2.2, Alternate Atmosphere Exposure Time Periods Established by Test, of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.

5/11/81 N-71-10

N-71-11 Additional Materials for Component Supports Fabricated by Welding,Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that

(1) the impact test results for the material meet Code requirements and

(2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.

The last sentence of Paragraph 5.3 of the Code Case should reference Paragraph

4.5.2.2 of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.

6/17/82

2/14/83

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DATE

N-71-12 Additional Materials for Component Supports Fabricated by Welding,Section III, Division 1, Class 1, 2, 3 and MC

The maximum measured UTS of the component support material should not exceed 170 ksi in view of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that (1) the impact test results for the material meet Code requirements and

(2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.

The last sentence of Paragraph 5.3 of the Code Case should reference Paragraph

4.5.2.2 of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.

Paragraph 16.2.2 is not acceptable as written and should be replaced with the following: When not exempted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710

Grade A material, it should be at least 1000°F (540°C) and should not exceed

1150°F (620°C) for Class 1 and Class 2 material and 1175°F (640°C) for Class 3 material. The new holding time at temperature for weld thickness (nominal)

should be 30 minutes for 2 inches or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thickness over

2 inches to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 minutes for each additional inch over 5 inches.

2/20/84 N-71-13 N-71-14 N-71-15 N-71-16 N-71-17 N-71-18

Additional Materials for Subsection NF, Classes 1, 2, 3 and MC Component Supports Fabricated by Welding,Section III, Division 1

(1)

The maximum measured UTS of the component support material must not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking.

(2)

Certain applications may exist for which a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification must specify impact testing for the material. For these cases, the applicant must demonstrate that (1) the impact test results for the material meet the Code requirements and (2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.

(3) In the last sentence of Paragraph 5.3 of the Code Case, reference must be made to Paragraph 5.3.2.3, Alternative Atmosphere Exposure Time Periods Established by Tests, of the AWS D1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.

(4) Paragraph 15.2.2 of the Code Case is not acceptable as written and must be replaced with the following: When not exempted by 15.2.1 above, the postweld heat treatment must be performed in accordance with NF-4622 except that ASTM A-710 Grade A Material must be at least 1000°F (540°C)

12/5/85

12/16/86

2/12/93

12/31/96

12/8/00

11/8/12

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DATE

and must not exceed 1150°F (620°C) for Class 1 and Class 2 material and

1175°F (640°C) for Class 3 material.

(5) The new holding time at temperature for weld thickness (nominal) must be

30 minutes for 2 inches or less; 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thickness over 2 inches to

5 inches; and for thicknesses over 5 inches, 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 minutes for each additional inch over 5 inches.

The fracture toughness requirements as listed in this Code Case apply only to piping supports, not to Class 1, Class 2, and Class 3 component supports.

N-71-19

Additional Materials for Subsection NF, Classes 1, 2, 3 and MC Component Supports Fabricated by Welding,Section III, Division 1

(1) The maximum measured ultimate tensile strength (UTS) of the component support material must not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking.

(2) In the last sentence of Paragraph 5.2 of Code Case N7119, reference must be made to Paragraph 5.3.2.3, Alternative Atmosphere Exposure Time Periods Established by Test, of the AWS D1.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for a longer period of time.

(3) Paragraph 16.2.2 of Code Case N-71-19 is not acceptable as written and must be replaced with the following: When not exempted by 16.2.1 above, the post weld heat treatment must be performed in accordance with NF4622 except that ASTM A-710 Grade A Material must be at least 1000°F (540°C)

and must not exceed 1150°F (620°C) for Class 1 and 2 material and 1175°F

(640°C) for Class 3 material.

(4) The new holding time at temperature for weld thickness (nominal) must be

30 minutes for welds 0.5 inch or less; 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch of thickness for welds over 0.5 inch to 5 inches; and for thicknesses over 5 inches, 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus

15 minutes for each additional inch over 5 inches.

(5) The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, 2 and 3 component supports.

(6) When welding P-number materials listed in the Code Case, the corresponding S-number welding requirements shall apply.

6/30/16 N-95-1

(1701-1)

Determination of Capacities of Vacuum Relief Valves,Section III, Division 1 and

2, Class MC

7/9/79 N-102-1

(1714-2)

Postweld Heat Treatment of P-1 Material,Section III, Class MC

8/28/78 N-119-2

(1739-2)

N-119-3

(1739-3 N-119-4

(1739-4)

N-119-5 Pump Internal Items,Section III, Division 1, Class 1, 2, and 3

8/25/80

12/1/80

7/18/85

9/5/85 N-122 Stress Indices for Structural Attachments, Class 1,Section III, Division 1

7/24/89 N-133

(1761-1)

Use of SB-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves

1/14/77 N-133-1 N-133-2 Use of SB-148 Alloys 952 and 954,Section III, Division 1, Class 3

5/19/85

7/18/85

RG 1.84, Rev. 39, Page 40

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DATE

N-154

(1791)

Projection Resistance Welding of Valve Seats,Section III, Division 1, Class 1, 2 and 3 Valves

7/18/85 N-155-2 Fiberglass Reinforced Thermosetting Resin Pipe,Section III, Division 1

(1)

The design temperature for spray pond piping must be 100°C (212°F).

(2)

The allowable design stress must be the value obtained from the minimum hydrostatic design basis in Table 3611-1 of Code Case N-155-2 (Procedure A or B) or the value determined as one-sixth of the stress obtained from a short-time burst test for the pipe being qualified, whichever is lower. The short-time burst strength must be determined by bursting the pipe (ASTM

D-1599-74) using free-end mounting after it has been exposed to 1x105 pressure cycles from atmospheric to design pressure.

(3)

The value of K in Equation 9 of Paragraph 3652 must be limited to 1.2 unless it can be demonstrated that, with the use of a large value of K1, the functional capability of the system will not be impaired during upset and emergency conditions.

(4)

RTR piping must be uninsulated or uncovered and installed under conditions that make it readily accessible for inspection.

(5)

Preoperational and inservice inspections must be as follows:

(a)

During the preoperational testing period, tests must be made to verify that the piping is free of vibration induced by weather conditions or water flow that could fatigue the piping prematurely.

(b)

Fiberglass-reinforced piping components must be inspected in accordance with ASME Code,Section XI, for Code Class 3 components. In addition, all pipe supports must be inspected.

(c)

Inspection frequency for piping must be increased to once annually if an exterior weather-resistant coating is not provided.

2/11/16 N-160

(1797)

Finned Tubing for Construction,Section III, Division 1

7/18/85 N-188 Use of Welded Ni-Fe-Cr-Mo-Cu (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625)

Tubing,Section III, Division 1, Class 3

1/1/78 N-192 N-192-1 N-192-2 Use of Flexible Hose for Section III, Division 1, Class 1, 2, and 3 Construction The applicant should indicate the system application, design and operating pressure, and pressure-temperature rating of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC-ND-

3649.4(e), are required to be furnished with the application.

8/30/79

9/16/81

7/23/02 N-196 Exemption from the Shake-down Requirements When Plastic Analysis is Performed for Section III, Division 1, Class 1 Construction

1/8/79 N-207 Use of Modified SA-479 Type XM-19 for Section III, Division 1, Class 1, 2, or 3 Construction

3/19/79 N-208-1 Fatigue Analysis for Precipitation Hardening Nickel Alloy Bolting Material to Specification SB-637 N07718 for Section III Division 1, Class 1 Construction

2/14/03 N-214 N-214-1 Use of SA-351, Grade CN7M, for Valves for Section III, Division 1, Construction

9/7/82

5/25/83 N-224 Use of ASTM A500 Grade B and ASTM A501 Structural Tubing for Welded Attachments for Section III, Class 2 and 3 Construction

5/11/81

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DATE

N-237 Hydrostatic Testing of Internal Piping,Section III, Division 1

9/7/82 N-237-1 Hydrostatic Testing of Internal Piping,Section III, Division 1, Classes 2 and 3

5/25/83 N-242 Materials Certification,Section III, Division 1, Classes 1, 2, 3, MC, and CS

Construction Applicants should identify the components and supports that require the use of Paragraphs 1.0 through 4.0 of the Code Case in their safety analysis reports.

4/10/80

N-246 Use of SB-169 Alloy CA614,Section III, Division 1, Class 3

9/7/82 N-246-1 SB-169, Alloy C 61400,Section III, Division 1, Class 3

5/25/83 N-249 Additional Materials for Component Supports Fabricated without Welding,Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports Footnote 2 of the Code Case should apply to all materials listed in Tables 1, 2, 3,

4, and 5 of the Code Case and should be so indicated on line 5 of the Reply.

5/11/81 N-249-1 Additional Materials for Component Supports Fabricated without Welding,Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports Paragraph 7 of the Reply should reference the requirements in Paragraph NF-2600 instead of those in Paragraph NF-2800. This is a typographical error because Paragraph NF-2800 does not exist.

6/17/82 N-249-2 N-249-3 Additional Materials for Subsection NF Class 1, 2, 3, and MC Component Supports Fabricated without Welding,Section III, Division 1

2/14/83

2/20/84 N-249-4 N-249-5 Additional Material for Subsection NF, Classes 1, 2, 3, and MC Component Supports Fabricated without Welding,Section III, Division 1 The fracture toughness requirements, as listed in Code Case N-249-4, apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with Section 5.3.4 of NUREG-0800, Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition (SRP) (Ref. 16), or on a case-by-case basis.

9/17/84

4/8/85 N-249-6 N-249-7 N-249-8 N-249-9 N-249-10

N-249-11 N-249-12 N-249-13 Additional Material for Subsection NF, Classes 1, 2, 3, and MC Component Supports Fabricated without Welding,Section III, Division 1 The fracture toughness requirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with SRP

Section 5.3.4 (Ref. 16), or on a case-by-case basis. The following should be added to Paragraph 5 of the Code Case: For these cases, the owner should demonstrate that (1) the impact test results for the material meet Code requirements and (2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.

9/5/85

12/5/85

12/16/86

5/6/89

5/13/91

2/12/93

5/11/94

12/8/00

N-249-14 Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component Supports Fabricated without Welding,Section III, Division 1

(1)

The fracture toughness requirements apply only to piping supports, not to Class 1, Class 2, and Class 3 component supports.

(2)

The following should be added to Paragraph (e) of the Code Case: For these cases, the owner must demonstrate that (1) the impact test results for the material meet Code requirements and (2) the material is not subject to

2/20/04

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DATE

stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.

N-249-15 N-249-16 Additional Materials for Subsection NF, Classes 1, 2, 3, and MC Supports Fabricated without Welding,Section III, Division 1

7/15/14

4/10/18 N-260

Weld Repair of SA-182 Type 316 Forgings,Section III, Division 1, Classes 1, 2, 3, and MC

7/18/85 N-260-1 Weld Repair of SA-182 Type 316 Forgings,Section III, Division 1, Classes 1, 2, 3, and MC

Type 308L welding materials should not be used to repair Grade F 316 N forgings because of the difference in strength levels.

12/5/85 N-265 Modified SA-487 Castings,Section III, Division 1, Class 1

5/19/85 N-284-1 Metal Containment Shell Buckling Design Methods,Section III, Division 1, Class MC

This Code Case is listed in RG 1.193.

10/2/00

N-284-2 N-284-3 Metal Containment Shell Buckling Design Methods, Class MC, TC, and SC

Construction,Section III, Divisions 1 and 3

1/10/07

12/17/12 N-299 Use of Nickel-Chromium-Molybdenum-Columbium Alloy 625 Forgings,Section III, Division 1, Class 2 and Class 3 Components

7/18/85 N-304 N-304-1 N-304-2 N-304-3 Use of 20 Cr-25Ni-6Mo (Alloy UNS N08366) Welded Tubes for Section III,

Division 1, Classes 2 and 3 Construction

7/12/84

5/19/85

12/5/85

2/23/87 N-309 Identification of Materials for Component Supports,Section III, Division 1

5/11/84 N-318 N-318-1 N-318-2 N-318-3 N-318-4 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping,Section III, Division 1 Applicants should identify the following in their safety analysis report:

(1)

the method of lug attachment

(2)

the piping system involved

(3)

the location in the system where the Code Case will be applied

2/20/84

7/12/84

9/5/85

12/11/89

4/28/94 N-319 N-319-1 N-319-2 Alternate Procedure for Evaluation of Stresses in Butt Weld Elbows in Class 1 Piping,Section III, Division 1

7/24/89

8/14/90

1/17/00

N-321 Use of Modified SA-249, Type 304,Section III, Division 1, Class 1 Construction

12/5/85 N-337 Use of ASTM B 525-70 Grade II, Type II, Sintered Austenitic Stainless Steel for Class 2, 3, and MC Component Standard Supports,Section III, Division 1

7/18/85 N-345 Attachment of AMS 5382 Alloy 31 Seat Rings by Friction Welding,Section III,

Division 1, Classes 1, 2, and 3

12/13/82 N-352 Use of SA-638 Grade 660 Forgings and Bars below 700°F without Stress Rupture Tests,Section III, Division 1

7/18/85 N-362 Alternate Rules for Pressure Testing of Containment Items,Section III,

Division 1

12/13/82

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DATE

N-362-1 Pressure Testing of Containment Items,Section III, Division 1, Classes 1, 2, and MC

7/12/84 N-370

N-370-1 Modified SA-705 Grade XM-13 Forgings,Section III, Division 1

7/18/85

12/5/85 N-371

12Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals,Section III,

Division 1

7/18/85 N-373-1 N-373-2 Alternative PWHT Time at Temperature for P-No. 5 Material,Section III,

Division 1, Classes 1, 2, and 3

9/7/01

11/2/04 N-379 Bimetallic Tubing Section III, Division 1, Class 1

7/18/85 N-383 Weld Repair of SA-182 Austenitic Forgings,Section III, Division 1, Classes 1, 2, and 3 Applicants who apply the provisions of the Code Case to permit material manufacturers to weld repair austenitic forgings without resolution heat treatment should justify to the NRC staff (through the safety analysis report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress-corrosion cracking.

7/18/85 N-391 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Class 1 Piping,Section III, Division 1

7/24/89 N-391-1 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Class 1 Piping,Section III, Division 1 The following typographical errors need to be corrected:

(1)

In Equation 3, the + sign should be changed to an = sign.

(2)

In Equation 4, the first + sign should be changed to an = sign.

8/24/95 N-392 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Classes 2 and 3 Piping,Section III, Division 1

12/11/89 N-392-1 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Classes 2 and 3 Piping,Section III, Division 1 Applicants should identify the following in their safety analysis report:

(1)

the method of lug attachment

(2)

the piping system involved

(3)

the location in the system where the Code Case will be applied

12/11/92 N-392-2 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Classes 2 and 3 Piping,Section III, Division 1 Applicants should identify in their safety analysis report:

(1)

the method of lug attachment

(2)

the piping system involved

(3)

the location in the system where the Code Case will be applied

12/12/94 N-411 Alternative Damping Values for Seismic Analysis of Classes 1, 2, and 3 Piping Sections,Section III, Division 1

(1)

The damping values specified may be used to analyze piping response for seismic and other dynamic loads that are being filtered through building structures provided that the response mode frequencies are limited to

33 hertz and below. Within this range, the Code Case damping should be used completely and consistently, if it is used at all. (For equipment other

2/20/86

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DATE

than piping, the damping values specified in RG 1.61 (Ref. 11), should be used.)

(2)

The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been employed. Such use should be limited only to response spectral analyses [similar to that used in the study supporting its acceptance, NUREG/CR-3526 (Ref. 12)]. The acceptance of the use with other types of dynamic analyses (e.g., time- history analysis) is pending further justification.

(3)

When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and online mounted equipment should be checked.

(4)

This Code Case is not appropriate for analyzing the dynamic response of piping systems that use supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420).

(5)

This Code Case does not apply to piping in which stress-corrosion cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.

N-418 Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028 and UNS N08904)

Tubing,Section III, Division 1, Classes 2 and 3

7/30/86 N-438 N-438-1 N-438-2 Fe-24.5Ni-21Cr-6.5 Mo-0.2N (Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction,Section III,

Division 1

3/8/89 Reinstated on 5/24/96

7/27/92 N-438-3 UNS N08367 Material,Section III, Division 1, Class 2 and 3 Construction

5/24/96 N-439 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Forgings, Plate, Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction,Section III,

Division 1

7/10/00

N-440

Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction,Section III, Division 1

7/10/00

N-441 N-441-1 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction,Section III, Division 1

11/25/92

7/10/00

N-443 N-443-1 High Yield Strength Cr-Mo Steel, Class 1 Components,Section III, Division 1

3/8/89

11/11/99 N-453 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Welded Pipe for Class 2 and 3 Construction,Section III, Division 1

11/30/88 N-453-1 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Seamless and Welded Pipe for Class 2 and 3 Construction,Section III, Division 1

4/30/92 N-453-2 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925 and N08926) Seamless and Welded Pipe for Class 2 and 3 Construction,Section III,

Division 1

12/12/95 N-454 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Wrought Fittings for Class 2 and 3 Construction,Section III, Division 1

4/30/92 N-455 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Forged Flanges and Fittings for Class 2 and 3 Construction,Section III, Division 1

4/30/92

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NUMBER

TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED

BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION

DATE

N-466 Modified 9Cr-1Mo Material,Section III, Division 1, Classes 1, 2, and 3

4/30/90

N-469 Martensitic Stainless Steel for Class 1, 2, and 3 Components,Section III,

Division 1

6/14/00

N-474 Design Stress Intensities and Yield Strength Values for Alloy 690 with a Minimum Yield Strength of 35 ksi, Class 1 Components,Section III, Division 1

3/5/90

N-474-1 Design Stress Intensities and Yield Strength Values for UNS N06690 with a Minimum Specified Yield Strength of 35 ksi, Class 1 Components,Section III,

Division 1

12/9/93 N-484 Real Time Radioscopic Examination of Welds,Section III, Division 1

12/16/91 N-492 Grade 9 Titanium Alloy Tubing,Section III, Division 1, Class 1, 2, and 3

5/11/94 N-497 Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials,Section III, Division 1, Class 2 and 3 Construction

12/9/93 N-500

N-500-1 N-500-2 N-500-3 Alternative Rules for Standard Supports for Classes 1, 2, 3, and MC,Section III,

Division 1

12/9/93

8/14/01

2/20/04

8/5/11 N-510

Borated Stainless Steel for Class CS Core Support Structures and Class 1 Components,Section III, Division 1

12/12/94 N-520

N-520-1 N-520-2 N-520-3 N-520-4 N-520-5 Alternative Rules for Renewal of N-type Certificates for Plants Not in Active Construction,Section III, Division 1

10/26/94

5/9/03

11/1/07

11/10/09

3/13/12

5/18/2012 N-539 UNS N08367 in Class 2 and 3 Valves,Section III, Division 1

8/16/16 N-564 N-564-1 UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction,Section III,

Division 1

7/30/98

12/31/96 N-570

Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1,

2, 3, and MC, Section, III, Division 1

3/28/06

1/5/06 N-570-1 Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1, 2,

3, and MC,Section III, Division 1 The provisions of ANSI/AISC N690-1994 s2, Supplement No. 2 to the Specification for the Design, Fabrication, and Erection of Steel of Safety-Related Structures for Nuclear Facilities, must be met.

1/5/06 N-580

N-580-1 Use of Alloy 600 with Columbium Added,Section III, Division 1

5/26/97

5/20/98 N-594 Repairs to P-4 and P-5A Castings without Postweld Heat Treatment Class 1, 2, and 3 Construction,Section III, Division 1

3/2/98 N-595-3 Requirements for Spent Fuel Storage Canisters,Section III, Division 1 The canisters must be made from austenitic stainless steel Type 304 or 316.

4/8/02 N-621 Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800°F,Section III,

Division 1

11/2/04

RG 1.84, Rev. 39, Page 46 CODE CASE

NUMBER

TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED

BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION

DATE

N-625 Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800°F,Section III,

Division 1

3/28/01 N-635 Use of 22Cr-5Ni-3Mo-N (Alloy UNS S31803) Forgings, Plate, Bar, Welded and Seamless Pipe, and/or Tube, Fittings, and Fusion Welded Pipe with Addition of Filler Metal, Classes 2 and 3,Section III, Division 1

2/14/03 N-637 Use of 44Fe-25Ni-21Cr-Mo (Alloy UNS N08904) Plate, Bar, Fittings, Welded Pipe, and Welded Tube, Classes 2 and 3,Section III, Division 1

9/20/10

N-644 Weld Procedure Qualification for Procedures Exempt from PWHT in Class 1, 2, and 3 Construction,Section III, Division 1 Reinstated

2/14/03 N-655 Use of SA-738, Grade B, for Metal Containment Vessels, Class MC,Section III,

Division 1 For metal containment vessels up to 1.75 inches thick, the following requirements apply:

(1) Supplementary Requirement S17, Vacuum Carbon-Deoxidized Steel, of Material Specification SA-738 must be applied to the material.

(2) Supplementary Requirement S20, Maximum Carbon Equivalent for Weldability, of Material Specification SA-738 must be applied to the material.

2/25/02 N-692 Use of Standard Welding Procedures,Section III, Division 1

5/9/16 N-755-3 Use of Polyethylene (PE) Class 3 Plastic Pipe,Section III, Division 1

5/11/17 N-757 Alternative Rules for Acceptability for Class 2 and 3 Valves (DN 25) and Smaller with Welded and Nonwelded End Connections Other Than Flanges,Section III,

Division 1

1/21/07 N-759 N-759-1 Alternative Rules for Determining Allowable External Pressure and Comprehensive Stresses for Cylinders, Cones, Spheres, and Formed Heads, Class 1, 2, and 3,Section III, Division 1

10/4/06

10/19/07 N-760

N-760-1 Welding of Valve Plugs to Valve Stem Retainers, Classes 1, 2, and 3,Section III,

Division 1

3/27/07

2/12/08 N-801 N-801-1 N-801-2 Rules for Repair of N-Stamped Class 1, 2, and 3 Components,Section III,

Division 1

8/12/12

5/9/16

5/11/17 N-822 N-822-1 N-822-2 N-822-3 Application of the ASME Certification Mark Section III, Divisions 1, 2, 3, and 5

12/6/11

12/17/12

12/28/15

8/2/16 N-863 Postweld Heat Treatment (PWHT) of Valve Seal Welds for P4 and P5A Materials,Section III, Division 1

2/16/17 N-870

Rules for the Elimination of External Surface Defects on Class 1, 2, and 3 Piping, Pumps, or Valves After Component Stamping and Prior to Completion of the N-3 Data Report,Section III, Division 1

11/2/17

1332-6 Requirements for Steel Forgings,Section III, Division 1

3/1/79

1335-9 Requirements for Bolting Materials

8/28/78

RG 1.84, Rev. 39, Page 47 CODE CASE

NUMBER

TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED

BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION

DATE

1337-9

1337-10

Special Type 403 Modified Forgings or Bars,Section III

4/28/75

5/15/78

1395-3 SA-508, Class 2 Forgings with Modified Manganese Content,Section III or Section VIII, Division 2

1/8/79

1407-2 Time of Examination for Class 1, 2, and 3,Section III Vessels

7/1/74

1414-3

1414-4 High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.

3/1/76

8/9/77

1484-1 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600) at a Specified Minimum Yield Strength of 40.0 ksi,Section III, Class 1

11/4/74

1484-2 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at a Specified Minimum Yield Strength of 40.0 ksi,Section III, Class 1

8/13/76

1492 Post Weld Heat Treatment,Section I, III, and VIII, Division 1 and 2

3/3/75

1508 Allowable Stresses, Design Intensity and/or Yield Strength Values,Section I, III,

and VIII, Divisions 1 and 2

6/30/75

1516-1 Welding of Seats in Valves for Section III Applications

8/11/75

1540-1 Elastomer Diaphragm Valves,Section III, Classes 2 and 3

1/14/77

1541-1 Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III

Construction

9/30/76

1541-2 Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III,

Division 1 Construction

5/15/78

1552 Design by Analysis of Section III, Class 1 Valves

8/29/77

1553 Upset Heading and Roll Threading of SA-453 for Bolting in Section III

3/3/75

1555 Certification of Safety Relief Valves on Liquids

1/14/77

1557-2 Steel Products Refined by Secondary Remelting

1/8/79

1606 Stress Criteria for Section III, Class 2 and 3 Piping Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1606 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.

12/16/74

1607 Stress Criteria for Section III, Classes 2 and 3 Vessels Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1607 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.

11/4/74

1618 Material for Core Support Structures,Section III, Subsection NG

(1) Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition.

(2) Use of alloy ASTM A-564 Grade 631 is not acceptable on a generic basis.

3/3/75

RG 1.84, Rev. 39, Page 48 CODE CASE

NUMBER

TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED

BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION

DATE

1618-1 Material for Core Support Structures,Section III, Subsection NG

Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition.

3/1/76

1626 Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings,Section I, Section III, and Section VIII, Division 1 and 2

1/8/79

1634

1634-1 Use of SB-359 for Section III, Class 3 Construction

8/12/74

8/13/76

1644

1644-1

1644-2

1644-3 Additional Materials for Component Supports,Section III, Subsection NF,

Class 1, 2, 3, and MC Construction The maximum measured UTS of the component support material should not exceed 170 ksi.

4/28/75

6/30/75

11/3/75

3/1/76

1644-4

1644-5

1644-6 Additional Materials for Component Supports and Alternate Design Requirements for Bolted Joints,Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC

Construction The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190-ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that

(1) the impact test results for the material meet Code requirements and

(2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.

8/13/76

3/3/77

11/21/77

1682 Alternate Rules for Material Manufacturers and Suppliers,Section III,

Subarticle NA-3700

8/11/75

1683 Bolt Holes for Section III, Division 1, Class 1, 2, 3 and MC Component Supports

3/1/76

1689 Alternate PWHT Time and Temperature for SA-182 Grade F22,Section III,

Class 1, 2, 3 and CS

The alternate PWHT should be prequalified along with the applicable welding procedure in accordance with Section IX.

9/10/76

1695 Brazing,Section III, Class 3

11/3/75

1701 Determination of Capacities of Vacuum Relief Valves,Section III, Class MC

3/20/78

1702 Flanged Valves Larger than 24 Inches for Section III, Class 1, 2 and 3 Construction

7/11/77

1714 Postweld Heat Treatment of P-1 Material,Section III, Class MC

7/11/77

1720

Weld End Preparation for Section III, Division Construction Weld end preparations other than those shown in Figures 1, 2, and 3 of the Code Case are not acceptable on a generic basis. Such alternative end preparations should be treated on a case-by-case basis.

3/1/76

1720-1 Weld End Preparation for Section III, Division Construction The acceptance of weld end preparations other than those shown in Figures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.

11/20/78

RG 1.84, Rev. 39, Page 49 CODE CASE

NUMBER

TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED

BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION

DATE

1722 Vacuum, Carbon Deoxidized SA-508 Forgings,Section III, Division 1, and VIII,

Division 1 and 2

1/8/79

1741 Interim Rules for the Required Number of Impact Tests for Rolled Shapes,Section III, Division 1, Subsection NF, Component Supports

1/14/77

1755 Alternate Rules for Examination of Welds in Piping, Class 1 and 2 Construction,Section III, Division 1

1/14/77

1759 Material for Internal Pressure Retaining Items for Pressure Relief Valves,Section III, Division 1, Class 1, 2, and 3 Applicants using this Code Case should also use Code Case 1711 for the design of pressure relief valves.

5/15/78

1761 Use of SG-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves

1/14/77

1769 Qualification of NDE Level III Personnel,Section III, Division 1

2/16/77

1774 Minimum Wall Thickness for Class 2 and 3 Valves,Section III, Division 1

7/11/77

1780

Hydrostatic Testing and Stamping of Pumps for Class 1 Construction,Section III, Division 1 Each licensing application in which the Code Case is to be used should present information that satisfactorily demonstrates that the subassembly tests adequately simulate the pressure loadings. In addition, the closure fixture for the test subassembly should adequately simulate the rigidity of adjacent subassemblies and also simulate the interface loadings from adjacent subassemblies that would result from a hydrostatic pressure test of a complete pump assembly.

As a minimum, the closure fixture should impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly. Hydrostatic testing should not simulate piping reactor loadings.

3/10/78

1783 Qualification of Nondestructive Personnel,Section III, Division 1 The first sentence of Paragraph 1 of the Code Case should be replaced with the following: The certification of the Level III nondestructive examination personnel for the purposes of this Section of the Code shall be the responsibility of the employer of the Level III individual. If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder.

1/14/77

RG 1.84, Rev. 39, Page 50

D. IMPLEMENTATION

The purpose of this section is to provide information to applicants and licensees regarding the NRC

staffs plans for using this regulatory guide. This regulatory guide lists the ASME BPV Code,Section III

Code Cases that the NRC has approved for use as voluntary alternatives to the mandatory ASME BPV

Code provisions that are incorporated by reference into 50.55a. The requirements addressing implementation of Section III Code Cases are contained in 10 CFR 50.55a(b)(4). An applicants or a licensees voluntary application of an approved Code Case does not constitute backfitting, inasmuch as there is no imposition of a new requirement or new position. No backfitting is intended or approved in connection with the issuance of this guide.

RG 1.84, Rev. 39, Page 51 REFERENCES2F3

1.

American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section III,

Rules for Construction of Nuclear Power Plant Components, Division 1, New York, NY.3F4

2.

Code of Federal Regulations (CFR), Domestic Licensing of Production and Utilization Facilities Part 50, Chapter 1, Title 10, Energy.

3.

CFR, Licenses, Certifications, and Approvals for Nuclear Power Plants, Part 52, Chapter 1, Title 10, Energy.

4.

U.S. Nuclear Regulatory Commission (NRC) Regulatory Guide (RG) 1.147, Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1, Washington, DC.

5.

NRC, RG 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code, Washington, DC.

6.

NRC, RG 1.193, ASME Code Cases Not Approved for Use, Washington, DC.

7.

NRC, RG 1.136, Design Limits, Loading Combinations, Materials, Construction, and Testing of Concrete Containments, Washington, DC

8.

American Society for Testing and Materials International (ASTM) A 262-70, Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels, West Conshohocken, PA.4F5

9.

ASTM A 708-74, Practice for Detection of Susceptibility to Intergranular Corrosion in Severely Sensitized Austenitic Stainless Steels, West Conshohocken, PA.

10. NRC, RG 1.122, Development of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components, Washington, DC.

11. NRC, RG 1.61, Damping Values for Seismic Design of Nuclear Power Plants, Washington, DC.

3 Publicly available NRC published documents are available electronically through the NRC Library on the NRCs public Web site at http://www.nrc.gov/reading-rm/doc-collections/ and through the NRCs Agencywide Documents Access and Management System (ADAMS) at http://www.nrc.gov/reading-rm/adams.html. The documents can also be viewed online or printed for a fee in the NRCs Public Document Room (PDR) at 11555 Rockville Pike, Rockville, MD. For problems with ADAMS, contact the PDR staff at (301) 415-4737 or (800) 397-4209; fax (301) 415-3548; or e-mail pdr.resource@nrc.gov.

4 Copies of American Society of Mechanical Engineers (ASME) standards may be purchased from ASME, Two Park Avenue, New York, NY 10016-5990; telephone (800) 843-2763. Purchase information is available through the ASME Web-based store at https://www.asme.org/publications-submissions/publishing-information.

5 Copies of American Society for Testing and Materials International (ASTM) standards may be purchased from ASTM, 100

Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959; telephone (610) 832-9585. Purchase information is available through the ASTM Web site at http://www.astm.org.

.

RG 1.84, Rev. 39, Page 52

12. NUREG/CR-3526, Impact of Changes in Damping and Spectrum Peak Broadening on the Seismic Response of Piping Systems, Washington, DC, March 1984. (ADAMS Accession No.

ML20088A672)

13. NRC, RG 1.31, Control of Ferrite Content in Stainless Steel Weld Metal, Washington, DC.

14. NRC, RG 1.44, Control of the Use of Sensitized Stainless Steel, Washington, DC.

15. NRC, RG 1.67, Installation of Over-Pressure Protection Devices, Washington, DC.

16. NRC, NUREG-0800, Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition, Washington, DC.

RG 1.84, Rev. 39, Appendix A, Page A-1 APPENDIX A

SUPPLEMENTS ADDRESSED IN REVISION 39 OF REGULATORY GUIDE 1.84

EDITION

SUPPLEMENT

NUMBER

NUMERICAL LISTING OF SECTION III CODE CASES IN

SUPPLEMENT

2015

0

N-192-35F1, N-4931, N-645-11, N-6461, N-6571, N-852

2015

1 None

2015

2 N-855, N-856

2015

3 N-755-3

2015

4 N-822-3

2015

5 N-155-3, N-213-16F2, N-5581, N-707-17F3, N-7441, N-8281, N-859, N-8618F4, N-8624

2015

6 N-71-20, N-670-11, N-692-1, N-801-2

2015

7 N-822-4, N-863

2017

0

N-71-20, N-539-1, N-801-3, N-866, N-870, N-8724

2017

1 N-755-4, N-863-1, N-879

2017

2 None

2017

3 None

2017

4 N-659-39F5, N-870-1, N-8815

2017

5 N-721-1, N-883

2017

6 N-249-16, N-510-11, N-7281, N-886, N-887

2017

7 None

2019

0

N-249-17, N-290-24, N-483-31, N-519-15, N-884, N-891

2019

1 None

1 Annulled.

2 This is a Division 2 Code Case and is addressed in RG 1.136.

3 This is a Division 3 Code Case and is not addressed in this RG.

4 This is a Division 5 Code Case and is not addressed in this RG.

5 This Code Case is not acceptable for use (See RG 1.193).

APPENDIX B

NUMERICAL LISTING OF CURRENT SECTION III CODE CASES

AND TABLE WHERE EACH CODE CASE IS LISTED

RG 1.84, Rev. 39, Appendix B, Page B-1 Code Case Number Approval Date Table Where Code Case Is Listed N-4-13

2/12/08 Table 1 N-60-6

12/6/11 Table 1 N-62-7

2/3/03 Table 2 N-71-20

7/17/16 Table 2 N-131-1

2/3/03 Table1 N-133-3

2/3/03 Table 1 N-154-1

2/3/03 Table 1 N-155-3

2/11/16 Table 2 N-205

2/25/02 Table 1 N-213-1

2/11/16 Division 2 N-249-17

4/10/18 Table 1 N-258-2

3/28/01 Division 2 N-284-4

10/8/12 Table 1 N-290-2

12/17/18 Division 5 N-312

3/28/01 Division 2 N-315

2/3/03 Table 1 N-319-3

2/3/03 Table 1 N-351

1/17/00

Table 1 N-369

5/9/03 Table 1 N-373-3

10/8/04 Table 1 N-405-1

2/20/04 Table 1 N-452

5/9/03 Table 1 N-453-3

8/14/01 Table 1 N-454-1

6/17/03 Table 1 N-455-1

7/17/03 Table 1 N-469-1

2/3/03 Table 1 N-500-4

10/14/11 Table 1 N-505

5/4/04 Table 1 N-511

5/4/04 Table 1 N-519-1

1/16/19 RG 1.193 N-520-6

12/11/12 Table 1 N-525

7/23/02 Table 1 N-530

2/3/03 RG 1.193 N-539-1

8/16/16 Table 1 N-548

9/7/01 Table 1 N-564-2

2/3/03 Table 1 Code Case Number Approval Date Table Where Code Case Is Listed N-565

12/3/99 RG 1.193 N-570-2

9/9/08 Table 1 N-579

2/3/03 Table 1 N-580-2

1/4/08 Table 1 N-594-1

10/14/11 Table 1 N-607

5/4/04 Table 1 N-610

5/4/04 Table 1 N-620

5/4/04 Table 1 N-621-1

10/8/04 Table 1 N-625-1

2/20/04 Table 1 N-631

7/23/02 Table 1 N-632

2/3/03 Division 2 N-633

6/14/02 Division 2 N-635-1

2/14/03 Table 1 N-636

7/23/02 Table 1 N-637-1

9/20/10

Table 1 N-642

2/3/03 Table 1 N-644-1

3/28/01 Table 1 N-650

2/20/04 Table 1 N-655-2

6/6/10

Table 1 N-659-3

10/12/17 RG 1.193 N-673

8/7/03 RG 1.193 N-692-1

5/9/16 Table 1 N-698

11/18/03 Table 1 N-699

1/5/06 Table 1 N-703

5/4/04 Table 1 N-707-1

2/18/16 Division 3 N-708

9/21/08 Table 1 N-710

5/4/04 Table 1 N-721-1

10/20/16 Table 1 N-725

1/12/05 Table 1 N-727

2/24/06 Table 1 N-736

1/5/06 Table 1 N-738

7/1/05 Table 1 N-741

10/11/05 Table 1 N-746

1/5/06 Table 1

APPENDIX B

NUMERICAL LISTING OF CURRENT SECTION III CODE CASES

AND TABLE WHERE EACH CODE CASE IS LISTED

RG 1.84, Rev. 39, Appendix B, Page B-2 Code Case Number Approval Date Table Where Code Case Is Listed N-748

9/9/08 Division 3 N-755-4

5/11/17 Table 2 N-756

1/21/07 Table 1 N-757-1

9/21/07 Table 2 N-759-2

1/4/08 Table 1 N-760-2

10/10/08 Table 1 N-761

9/20/10

RG 1.193 N-763

8/28/08 Division 2 N-767

1/4/08 Table 1 N-774

9/3/08 Table 1 N-777

10/10/08 Table 1 N-779

1/26/09 Table 2 N-782

1/30/09 Table 1 N-785

10/12/09 Table 1 N-791

9/20/10

Division 2 N-792-1

8/12/12 RG 1.193 N-793

9/20/10

Division 2 N-794

9/20/10

Division 2 N-796

10/18/10

Division 2 N-801-3

5/11/17 Table 1 N-804

10/14/11 RG 1.193 N-807

4/20/11 Division 2 N-811

8/5/11 Division 2 N-812-1

1/10/13 Division 5 N-815

12/6/11 Table 1 N-816

12/6/11 Table 1 N-817

12/6/11 Table 1 N-818-1

8/20/14 RG 1.193 N-819

12/6/11 Table 1 N-820

12/29/11 Division 2 N-822-4

8/2/16 Table 1 N-833

1/2/13 Division 2 N-834

10/22/13 Table 1 N-836

10/22/13 Table 1 N-837

10/22/13 RG 1.193 N-841

1/6/14 Table 1 Code Case Number Approval Date Table Where Code Case Is Listed N-844

2/9/14 Table 1 N-846

7/25/14 RG 1.193 N-850

10/20/14 Division 2 N-852

2/9/15 Table 2 N-855

7/8/15 Table 1 N-856

7/16/15 Table 1 N-859

1/20/16 Table 1 N-861

2/11/16 Division 5 N-862

2/11/16 Division 5 N-863-1

2/16/17 Table 1 N-866

11/14/16 Table 1 N-870-1

11/2/17 Table 1 N-872

10/20/16 Division 5 N-879

5/10/17 Table 1 N-881

12/4/17 RG 1.193 N-883

1/29/18 Table 2 N-884

10/23/18 Table 1 N-886

5/2/18 Table 2 N-887

5/2/18 Table 1 N-891

12/17/18 Table 1


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