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{{Adams
{{Adams
| number = ML13038A091
| number = ML21181A225
| issue date = 04/30/1992
| issue date = 12/17/2021
| title = 8, Design and Fabrication Code Case Acceptability ASME Section III Division 1
| 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
| document report number = RG-1.084, Rev. 28
| document report number = RG-1.084, Rev 39
| package number = ML21181A221
| document type = Regulatory Guide
| document type = Regulatory Guide
| page count = 18
| page count = 55
}}
}}
{{#Wiki_filter:U.S. NUCLEAR REGULATORY COMMISSION                                                               Revision 28 April 1992 REGULATORY GUIDE
{{#Wiki_filter:U.S. NUCLEAR REGULATORY COMMISSION  
                                OFFICE OF NUCLEAR REGULATORY RESEARCH
 
                                                            REGULATORY GUIDE 1.84 DESIGN AND FABRICATION CODE CASE ACCEPTABILITY
REGULATORY GUIDE 1.84, REVISION 39
                                                        ASME SECTION III DIVISION 1
 
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==
or modified as necessary to ensure a quality product in keeping with the required safety function.
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 


Section 50.55a, "Codes and Standards," of
This RG applies to reactor licensees and applicants subject to 10 CFR Part 50, Section 50.55a, Codes and standards.
10 CFR Part 50, "Domestic Licensing of Production                                  Criterion 30, "Quality of Reactor Coolant Pres- and Utilization Facilities," requires, in part, that com-                    sure Boundary," of the same appendix requires, in ponents of the reactor coolant pressure boundary be                          part, that components that are part of the reactor designed, fabricated, erected, and tested in accor-                          coolant pressure boundary be designed, fabricated, dance with the requirements for Class 1 components                          erected, and tested to the highest quality standards of Section III, "Nuclear Power Plant Components," 1                          practical.


of the American Society of Mechanical Engineers                                    Appendix B, "Quality Assurance Criteria for Nu- (ASME) Boiler and Pressure Vessel Code or equiva-                            clear Power Plants and Fuel Reprocessing Plants," to lent quality standards. Footnote 6 to §50.55a states                        10 CFR Part 50 requires, in part, that measures be that the use of specific Code Cases may be authorized                        established for the control of special processing of by the Commission upon request pursuant to                                  materials and that proper testing be performed.
Applicable Regulations


§50.55a(a) (2) (ii), which requires that proposed alter- natives to the described requirements or portions                                  This regulatory guide lists those Section III
*
thereof provide an acceptable level of quality and                           ASME Code Cases oriented to design and fabrication safety.                                                                      that are generally acceptable to the NRC staff for im- plementation in the licensing of light-water-cooled nu- General Design Criterion 1, "Quality Standards                        clear power plants.
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.


and Records," of Appendix A, "General Design Cri- teria for Nuclear Power Plants," to 10 CFR Part 50                                  Any information collection activities mentioned requires, in part, that structures, systems, and compo-                      in this regulatory guide are contained as requirements nents important to safety be designed, fabricated,                           in 10 CFR Part 50, which provides the regulatory ba- erected, and tested to quality standards commensu-                          sis for this guide. The information collection require- rate with the importance of the safety function to be                        ments in 10 CFR Part 50 have been cleared under performed. Where generally recognized codes and                              OMB Clearance No. 3150-0011.
*
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.


standards are used, Criterion 1 requires that they be                                               
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==
==B. DISCUSSION==
identified and evaluated to determine their applicabil- ity, adequacy, and sufficiency and be supplemented                                The ASME Boiler and Pressure Vessel Commit- tee publishes a document entitled "Code Cases." 1 Generally, the individual Code Cases that make up this document explain the intent of Code rules or pro-
Reason for Revision
    'Copies may be obtained from the American Society of Me- chanical Engineers, United Engineering Center, 345 East 47th                vide for alternative requirements under special cir- Street, New York, New York 10017.                                           cumstances.
 
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 includes Section 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 its Section 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.


USNRC REGULATORY GUIDES                              The guides are issued in the following ten broad divisions:
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,  
Regulatory Guides are issued to describe and make available to the pub- lic methods acceptable to the NRC staff of implementing specific parts of the Commission's regulations, to delineate techniques used by the       1. Power Reactors                    6. Products staff in evaluating specific problems or postulated accidents, or to pro-  2. Research and Test Reactors        7. Transportation vide guidance to applicants. Regulatory Guides are not substitutes for      3. Fuels and Materials Facilities    8. Occupational Health regulations, and compliance with them is not required. Methods and          4. Environmental and Siting          9, Antitrust and Financial Review solutions different from those set out in the guides will be acceptable if 5. Materials and Plant Protection    10. General they provide a basis for the findings requisite to the issuance or continu- ance of a permit or license by the Commission.


Copies of issued guides may be purchased from the Government Printing This guide was issued after consideration of comments received from        Office at the current GPO price. Information on current GPO prices may the public. Comments and suggestions for improvements in these              be obtained by contacting the Superintendent of Documents, U.S.
1 Section III, Division 2 Code Cases are addressed in RG 1.136. Section III, Division 3 Code Cases are addressed


guides are encouraged at all times, and guides will be revised, as ap-      Government Printing Office, Post Office Box 37082, Washington, DC
in a new RG currently under development.
  propriate, to accommodate comments and to reflect new information or      20013-7082, telephone (202)275-:2060 or (202)275-2171.


experience.
RG 1.84, Rev. 39, Page 5 Backfitting.


Written comments may be submitted to the Regulatory Publications          Issued guides may also be purchased from the National Technical Infor- Branch, DFIPS, ADM, U.S. Nuclear Regulatory Commission, Washing-          mation Service on a standing order basis. Details on this service may be ton, DC 20555,                                                             obtained by writing NTIS, 5285 Port Royal Road, Springfield, VA 22161.
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.


Most Code Cases are eventually superseded by              to accommodate new Code Cases and any revisions revision to the Code and then are annulled by action            of existing Code Cases.
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.


of the ASME. In such cases, the intent of the annulled Code Case becomes part of the revised                               
RG 1.84, Rev. 39, Page 6


==C. REGULATORY POSITION==
==C. REGULATORY POSITION==
Code, and therefore continued use of the Code Case intent is sanctioned under the rules of the Code. In                    1. The Section III ASME Code Cases 2 listed other cases, the Code Case is annulled because it is            below (by number, date of ASME approval, and no longer acceptable or there is no further                      title) are acceptable to the NRC staff for application requirement for it. A Code Case that was approved                in the construction of components for light- for a particular situation and not for a generic                water-cooled nuclear power plants. Their use is application should be used only for construction of              acceptable within the limitations stated in the the approved situation because annulment of such a              "Inquiry" and "Reply" sections of each individual Code Case could result in construction that would not            Code Case, within the limitations of such NRC or meet Code requirements.                                          other requirements as may exist, and within the The Code Cases listed in this guide are limited to         additional limitations recommended by the NRC staff given with the individual Code Case in the listing.
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 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°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
 
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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
 
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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
 
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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
 
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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
 
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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
 
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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
 
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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
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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°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 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°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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BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
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 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°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 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°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
 
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°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
 
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


those cases applicable to Section III that are oriented toward design and fabrication.                                  The categorization of Code Cases used in this guide is intended to facilitate the Code Case listing and is not All published Code Cases in the area of design            intended to indicate a limitation on its usage.
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


and fabrication that are applicable to Section III of                    a. Design-oriented Code Cases (Code Case the Code and were in effect on April 30, 1990, were reviewed for inclusion in this guide. In addition to the        number, date of ASME approval,3 and title):
9/20/10
listing of acceptable Code Cases, this revision of the guide includes listings of (1) Code Cases that were                          (1) Code Cases applicable to piping design:
N-644 Weld Procedure Qualification for Procedures Exempt from PWHT in Class 1, 2, and 3 Construction, Section III, Division 1 Reinstated
identified as acceptable in a prior version of this            N-160-1          07-18-85    Finned Tubing for Construc- regulatory guide and that were annulled after the                                07-18-88    tion, Section III, Division 1 original issuance of this guide (June 1974) and
2/14/03 N-655 Use of SA-738, Grade B, for Metal Containment Vessels, Class MC, Section III,  
(2) Code Cases that were identified as acceptable in            N-453-1        11-30-88    Nickel-Chromium-Molybde- num-Copper Stainless Steel a prior version of this regulatory guide and that were superseded by revised Code Cases after the original                                            (UNS N08925) Seamless and issuance of this guide (June 1974). Code Cases that                                          Welded Pipe for Class 2 and 3 are not listed herein are either not endorsed or will                                        Construction Section III, Divi- require supplementary provisions on an individual                                            sion 1 basis to attain endorsement status.                             N-454          12-07-87    Nickel-Chromium-Molybde- num-Copper Stainless Steel The endorsement of a Code Case by this guide constitutes acceptance of its technical position for                                          (UNS    N08925)       Wrought Fittings for Class 2 and 3 applications not precluded by regulatory or other Construction Section III, Divi- requirements or by the recommendations in this or sion 1 other regulatory guides. Contingent endorsement is N-455          12-07-87    Nickel-Chromium-Molybde- indicated in regulatory position C.1.c for specific num-Copper Stainless Steel cases. However, it is the responsibility of the user to (UNS      N08925)        Forged make certain that no regulatory requirements are Flanges and Fittings for Class violated and that there are no conflicts with other
Division 1 For metal containment vessels up to 1.75 inches thick, the following requirements apply:
                                                                                              2 and 3 Construction Section recommended limitations resulting from Code Case III, Division 1 usage.
(1)   Supplementary Requirement S17, Vacuum Carbon-Deoxidized Steel, of Material Specification SA-738 must be applied to the material.


Acceptance or endorsement by the NRC staff                              (2) Code Cases applicable to valve design:
(2)   Supplementary Requirement S20, Maximum Carbon Equivalent for Weldability, of Material Specification SA-738 must be applied to the material.
applies only to those Code Cases or Code Case N-133-3        07-18-85      Use of SB-148 Alloys 952 and revisions with the date of ASME approval as shown                                07-18-88      954 Section III, Division 1, in the regulatory position of this guide. Earlier or Class 3 later revisions of a Code Case are not endorsed by this guide. New Code Cases will require evaluation by            N-313          05-11-81 Alternate Rules for Half- the NRC staff to determine if they qualify for                                  11-28-83. Coupling Branch            Connec- inclusion in the approved list. Because of the                                   11-28-86 tions, Section III, Division 1
                                                                      2 continuing change in the status of Code Cases, it is                  A numerical listing of the Code Cases appears in the ap- pendix.


planned that this guide will require periodic updating              3 When more than one date is given, the earlier date is that on which the Code Case was approved by the ASME and the later date(s) is that on which the Code Case was reaffirmed by
2/25/02 N-692 Use of Standard Welding Procedures, Section III, Division 1
    *Lines indicate substantive changes from Revision 27.        the ASME.
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


1.84-2
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.


N-394        02-20-84  Restricting Lift to Achieve                consistently, if used at all. (For equipment other
3/1/76
            07-30-86  Reduced Relieving Capacities                than piping, the damping values specified in
8/9/77
            07-30-89  of Full Lift, Nozzle Type, and             Regulatory Guide 1.61, "Damping Values for Flat Seated Safety and Safety              Seismic Design of Nuclear Power Plants," should Relief Valves for Compress-                 be used.) (2) The damping values specified may ible Fluid Applications, Sec-              be used only in those analyses in which current tion III, Division 1, Classes 2             seismic spectra and procedures have been em- and 3                                       ployed. Such use should be limited only to re- N-410        12-05-84 Certified Relieving Capacities              sponse spectral analyses. (similar to that used in
1484-1 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600) at a Specified Minimum Yield Strength of 40.0 ksi, Section III, Class 1
              07-27-88 of Pressure Relief Valves                    the study supporting its acceptance-Reference Having Set Pressure of 3 psig              NUREG/CR-3526). The acceptance of the use up to but Not Including 15                  with other types of dynamic analyses (e.g., time- psig Installed for Overpressure            history analysis or independent support motion Protection of Compressible                  method) is pending further justification. (3)
11/4/74
                        Fluid Systems, Section III,                 When used for reconciliation work or for support Division 1, Classes 2 and 3                optimization of existing designs, the effects of in- N-442        02-23-87 1977 Addendum to ANSI/                       creased motion on existing clearances and on
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
              04-30-90 ASME          PTC    25.3-1976,            line mounted equipment should be checked. (4)
8/13/76
                        Safety and Safety Relief                  This Code Case is not appropriate for analyzing Valves, Class 1, 2, 3, and                 the dynamic response of piping systems using MC, Section III, Division 1                supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420). (5) This Code Case is not applica-
1492 Post Weld Heat Treatment, Section I, III, and VIII, Division 1 and 2
          (3)  Other Code Cases related to design:                ble to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is N-119-6      09-05-85  Pump Internal Items, Section                made and is reviewed by the NRC staff.
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.


07-27-88  III, Division 1, Class 1, 2, and 3                                  N-412        04-15-85  Alternative Rules for Witness- N-196-1        01-08-79  Exemption from the Shake-                            04-15-88  ing the Piping System Pressure
12/16/74
              01-21-82  down Requirements When                                          Tests of Classes 1, 2, and 3
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.
              01-21-85  Plastic Analysis is Performed                                  Piping Systems, Section III,
            .01-21-88  for Section III Division 1,                                     Division 1 Class 1 and CS Construction            N-420        02-14-85  Linear Energy Absorbing Sup- N-243          08-30-79  Boundaries Within Castings                          02-14-88  ports for Subsection NF,
              07-16-82  Used for Core Support Struc-                                    Classes 1, 2, and 3 Construc-
              05-19-85  tures, Section III, Division 1,                                tion, Section III, Division 1
              05-19-88  Class CS
                                                                    Code Case N-420 is acceptable subject to the fol- N-247          07-09-79  Certified Design Report Sum- lowing conditions in addition to those conditions
              01-21-82  mary for Component Stan- specified in the Code Case. Each applicant desir-
              01-21-85  dard Supports, Section III,
                                                                    ing to use the Code Case should provide the fol-
              01-21-88  Division 1, Class 1, 2, 3 and lowing information prior to implementing the MC
                                                                    Case: (1) indication of systems in which energy- N-309-1        12-05-85  Identification of Materials for absorbing supports are to be used, (2) fatigue de-
              07-27-88  Component Supports, Section                sign, (3) piping system analysis results consider- Ill, Division 1                            ing inelastic behavior of supports, and (4) plans N-319-1        07-24-89  Alternate      Procedure    for for inservice examination of energy absorbers.


Evaluation of Stresses in Butt Weld Elbows in Class 1 Pip- ing, Section III, Division 1 N-433        12-16-86  Non-Threaded Fasteners for N-411-1      02-20-86  Alternative Damping Values
11/4/74
                                                                              12-16-89    Section III, Division 1, Class
1618 Material for Core Support Structures, Section III, Subsection NG
              02-20-89  for Response Spectra Analysis
(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.
                                                                                          1, 2, and 3 Component and of Classes 1, 2, and 3 Piping,                                Piping Supports, Section III,
                          Section III, Division 1                                         Division 1 N-476        05-06-89  Class 1, 2, 3, and MC Linear Code Case N-411-1 is acceptable subject to the                                      Component Supports-Design following conditions in addition to those condi-                                     Criteria for Single Angle tions specified in the Code Case: (1) The Code                                      Members, Section III, Divi- Case damping should be used completely and                                          sion 1, Subsection NF
                                                          1.84-3


b. Fabrication-oriented Code Cases:                          2.    In equation (4) the first + sign should be changed to an = sign.
(2) Use of alloy ASTM A-564 Grade 631 is not acceptable on a generic basis.


(1)    Code Cases related to welding and                                                                          f*
3/3/75
brazing:                                                        N-392-1      12-11-89  Procedure for Evaluation of the Design of Hollow Circular N-154-1      12-05-85  Projection Resistance Welding                                  Cross Section Welded Attach-
              12-05-88  of Valve Seats, Section III,                                    ments on Classes 2 and 3 Pip- Division 1, Class 1, 2 and 3                                   ing, Section III, Division 1 Valves                                    Code Case N-392-1 is acceptable subject to the N-262        01-07-80  Electric    Resistance    Spot          following conditions in addition to those condi-
              09-07-82  Welding for Structural Use in              tions specified in the Code Case: Applicants
              09-05-85  Component Supports, Section                should identify in their Safety Analysis Report:
              07-27-88  III, Division 1                            (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys- N-304-4      02-23-87  Use of 20Cr-25Ni-6Mo (Alloy                tem where the Case is to be applied.


12-11-89  UNS N08366) Plate, Sheet, Strip and Welded Pipe, Class          N-393        11-28-83    Repair Welding Structural
RG 1.84, Rev. 39, Page 48 CODE CASE
                        2"and 3 Section III, Division 1                     07-30-86    Steel Rolled Shapes and N-315        02-14-83  Repair of Bellows, Section III,                     07-30-89    Plates for Component Sup-
NUMBER
              02-19-86  Division 1                                                      ports, Section III, Division 1
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
              02-19-89                                          N-395        12-11-89    Laser Welding, Section III,
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
                                                                                          Division 1 Code Case N-315 is acceptable subject to the fol-          N-452        03-08-89    Specialized      Subcontracted lowing conditions in addition to those conditions                                    Welding Process (Electron specified in the Code Case: Prior to implementa-                                    Beam Welding), Section III,
DATE
    tion of the Code Case, the applicant should pre-                                    Division 1 sent a description of the repair and a justification      N-464        03-08-89    Laser Welding of Lap-Joints, why the bellows should be repaired rather than                                      Section III, Division 1, Class 2 replaced. Following receipt of approval for the                                      and 3 Construction repair, but prior to making the repair, the appli- cant should present the results of the qualifica-                    (2)    - Other    Code    Cases  related  to tion on the full-scale facsimile bellows, including        fabrication:
1618-1 Material for Core Support Structures, Section III, Subsection NG
    the"design requirements, to ensure that the repair meets the requirements of the design specifica-           N-215        05-15-78    Integrally Finned . Titanium tion.                                                                                Tubes, Section II, Division 1, Class 3 Construction N-316        12-11-81  Alternate Rules for Fillet            N-240        03-19-79    Hydrostatic Testing of Open
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.
              09-17-84  Weld Dimensions for Socket                          01-21-82    Ended Piping, Section III,
              09-17-87  Welded Fittings, Section III,                      09-17-84    Division 1 Division 1, Class 1, 2, and 3                      09-17-87 N-241        07-09-79    Hydrostatic Testing of Piping, N-345-1      12-13-82  Attachment of AMS 5382                              01-21-82    Section III, Division 1
              06-30-88  Alloy 31 Seat Rings by Fric-                        09-17-84 tion Welding, Section III,                          09 -17-8 7 Division 1, Classes 1, 2, and 3 N-368
                                                                              12-11-89
                                                                              07-06-83    Pressure Testing of Pump I
N-391-1      07-24-89  Procedure for Evaluation of the Design of Hollow Circular                      06-30-87    Discharge, Section III, Divi- Cross Section Welded Attach-                                    sion 1, Classes 2 and 3 ments on Class 1 Piping, Sec-              Code Case N-368 is acceptable subject to the fol- tion III, Division 1                      lowing condition in addition to those conditions specified in the Code Case: Applicants using this Code Case N-391-1 is acceptable subject to the                Code Case should provide information to dem- onstrate that the length of discharge piping is rea- following conditions in addition to those specified in the Code Case: The following typographical                  sonably short.


errors need to be corrected:
3/1/76
                                                                N-369        02-14-83    Resistance Welding of Bel-
1626 Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings, Section I, Section III, and Section VIII, Division 1 and 2
      1.    In equation (3) the + sign should be                              02-19-86    lows, Section III, Division 1 changed to an = sign.                                              02-19-89                                    I
1/8/79
                                                          1.84-4
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.


N-414        02-20-86    Tack Welds for Class 1, 2, 3          1720-2      11-20-78  Weld End Preparation for
4/28/75
            02-20-89    and MC Components and                (N-106-2) 08-28-81      Section III, Division 1 Con- Piping Supports, Section III,                     09-17-84  struction Division 1                                        09-17-87 N-430        02-28-86    Alternative Requirements for              Code Case 1720-2 (N-106-2) is acceptable sub-
6/30/75
            02-28-89    Welding Workmanship and                  ject to the following condition in addition to Visual Acceptance Criteria for            those conditions specified in the Code Case: The Class 1, 2, 3 and MC Linear-             acceptance of weld end preparations other than Type and Standard Supports,               those shown in Figures 1, 2, and 3 of the Code Section III, Division 1                   Case should be evaluated on a case-by-case Code Case N-430 is acceptable subject to the fol-              basis.
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.


lowing conditions in addition to those conditions          1792-2      01-08-79    Fiberglass Reinforced Ther- specified in the Code Case: (1) The applicant              (N-155-2) 01-21-82      mosetting Resin Pipe, Section should demonstrate that.the applicable supports                        01-21-85    III, Division 1 are not subject to cyclic loading in excess of                          01-21-88
8/13/76
    20,000 cycles and (2) the first sentence of
3/3/77
    3.0(f) (1) should be replaced with the following:              Code Case 1792-2 (N-155-2) is acceptable sub-
11/21/77
    "For material 3/8 in. and less nominal thickness,            ject to the following condition in addition to undercut depth of 1/32 in. on one side of the                  those conditions specified in the Code Case: The member for the full length of the weld, or 1/32                applicant should comply with the additional re- in. on one side for one-half the length of the                quirements that are specified in Regulatory Guide weld, and 1/16 in. for one-fourth the length of                1.72, "Spray Pond Piping Made from Fiberglass- the weld on the face of a rectangular tube or                  Reinforced Thermosetting Resin."
1682 Alternate Rules for Material Manufacturers and Suppliers, Section III,  
    one-fourth the length of the weld on the same              N-192-2      09-16-81    Use of Braided Flexible Con- side of the member is acceptable."                                    09-17-84    nectors, Section III, Division
Subarticle NA-3700
                                                                            09-17-87    1, Class 2 and 3 c. Code Cases with contingent approval:                    Code Case N-192-2 is acceptable subject to the following conditions in addition to those condi- N-31-1       07-18-85  Elastomer Diaphragm Valves,               tions specified in the Code Case: The applicant
8/11/75
              07-18-88    Section III, Class 2 and 3               should indicate system application, design and Code Case N-31-1 is acceptable subject to the                  operating pressure, and pressure-temperature following conditions in addition to those condi-              rating of the flexible hose. Data to demonstrate tions specified in the Code Case: Each applicant              compliance of the flexible hose with NC/
1683 Bolt Holes for Section III, Division 1, Class 1, 2, 3 and MC Component Supports
    who applies the Code Case should indicate in the              ND-3649, particularly NC/ND-3649.4(e), are re- referencing Safety Analysis Report that the serv-              quired to be furnished with the application.
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.


ice life of the elastomer diaphragm should not            N-284        08-25-80 Metal        Containment  Shell exceed the manufacturer's recommended serv-                            05-25-83 Buckling Design Methods, ice life. This recommended service life should
9/10/76
                                                                            07-30-86 Section III, Division 1, Class not exceed 1/3 of the minimum cycle life as es-
1695 Brazing, Section III, Class 3
                                                                            07-30-89- MC
11/3/75
    tablished by the requirements of paragraph 3 of the Code Case. In addition, the service life of the            Code Case N-284 is acceptable subject to the fol- elastomer diaphragm should not exceed 5 years,                 lowing condition in addition to those conditions and the combined service and storage life of the              specified in the Code Case: Prior to implementa- elastomer diaphragm should not exceed 10 years.              tion of the Code Case, the applicant must dem- onstrate to the satisfaction of the NRC staff (via Safety Analysis Report) that any axisymmetric
1701 Determination of Capacities of Vacuum Relief Valves, Section III, Class MC  
              12-11-89  Internal and External Valve N-62-6                                                            techniques that are proposed will be applicable to Items, Section III, Division 1,           a vessel having large asymmetric openings and Class 1, 2 and 3                         that the overall margin used to prevent shell Code Case N-62-6 is acceptable subject to the                buckling is acceptable.
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.


following condition in addition to those condi- N-292        01-05-81 Depositing Weld Metal Prior tions specified in the Code Case: The Code re-
3/1/76
                                                                            11-28-83 to Preparing Ends for Weld- quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality                          07-30-86 ing, Section III, Division 1, Assurance,"    and, in addition, Class 3 valve                        07-30-89 Class 1, 2, and 3 Construction manufacturers should also meet the provisions of              Code Case N-292 is acceptable subject to the fol- NCA 4000.                                                     lowing conditions in addition to those conditions
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.
                                                        1.84-5


specified in the Code Case: Class 3 piping that is                1477-1          03-09-72    Use of. 1970 Addenda of longitudinally welded and that has a weld effi-                                  01-01-78   ANSI B31.7, Section III
11/20/78  
      ciency factor of .1.0 as selected from Table                      1494-1          03-03-73    Weld Procedure Qualification ND-3613.4-1 should receive a 100 percent                                          01-01-78    Test, Section III
      volumetric examination (RT or UT) of the de-                      1506            12-13-71    Stress Intensification Factors, posited weld metal in accordance with the re-                                    01-01-78    Section III, Class 2 and 3 quirements of ND-500


===0. Piping===
RG 1.84, Rev. 39, Page 49 CODE CASE
                                                                        1516-2          08-11-75    Welding of Seats or Minor In- N-318-4          12-11-89    Procedure for Evaluation of                (N-24)          07-01-78    ternal    Permanent Attach- the Design of Rectangular                                              ments in Valves for Section Cross Section Attachments on                                          III Applications Class 2 or 3 Piping, Section              1516-2          11-20-788  Welding of Seats or Minor In- III, Division 1                            (N-24)          01-01-80    ternal    Permanent        Attach- Code Case N-318-4 is acceptable subject to the                                              ments in Valves for Section following conditions in addition to those condi-                                            III Applications tions specified in the Code Case. Applicants                      15339          06-14-72    Pressure Temperature Ratings should identify in their Safety Analysis Report:                                07-01-75    of SA-351 Grades CF8A,
NUMBER
        (1) the method of lug attachment, (2) the piping                                            CF3, and CF3M, Section III
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
        system involved, and (3) the location in the sys-               1535-2          04-30-73    Hydrostatic Testing of Section tem where the Case is to be applied.                                            03-21-77    III, Class 1 Valves
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
                                                                        1536            08-14-72    Closing Seam for Electrical
DATE
        2. Code Cases that were endorsed by the NRC in
1722 Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division 1, and VIII,  
                                                                                        07-01-77    Penetrations for Section III,
Division 1 and 2
a prior version of this guide and were later annulled                                                Class 2, 3, and MC
1/8/79
by action of the ASME should be considered as
1741 Interim Rules for the Required Number of Impact Tests for Rolled Shapes, Section III, Division 1, Subsection NF, Component Supports
                                                                        1539-1         11-21-77    Metal Bellows and Metal deleted from the list of acceptable Code Cases as of (N-30-1)        01-01-81    Diaphragm        Stem      Sealed the date of the ASME action that approved the                                                        Valves, Section III, Division annulment. Such Code Cases, which were annulled
1/14/77
                                                                                                      1, Classes 1, 2, and 3 on or after July 1, 1974, are listed below by number,                    1541-3          05-15-78    Hydrostatic Testing of Em-
1755 Alternate Rules for Examination of Welds in Piping, Class 1 and 2 Construction, Section III, Division 1
                    4            5 effective dates, and title.                                              (N-32-3)        07-01-79    bedded Class 2 and Class 3
1/14/77
1361-2         03-09-72      Socket    Welds,   Section   III                                   Piping for Section III, Divi-
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.
                03-01-79                                                                            sion 1 Construction N-32-4          03-16-81    Hydrostatic Testing of Em- Code Case 1361-2 was acceptable when used in                                    03-16-84    bedded Class 2 and 3 Piping connection with Section III, paragraph NB-3356, for Section III, Division 1 Fillet Weld


====s. Construction====
5/15/78
1461-16          03-09-72    Electron Beam Welding, Sec-                    Code Case N-32-4 was acceptable subject to the
1761 Use of SG-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves
                  02-16-77     tion 1, 111, and VIII, Division                 following conditions in addition to those condi-
1/14/77  
                              1 and 2                                         tions specified in the Code Case:
1769 Qualification of NDE Level III Personnel, Section III, Division 1
1470-27          12-18-72 External Pressure Charts for                       The acceptance was based on the following clari-
2/16/77
                  11-04-74 High-Strength Carbon Steels                        fication and interpretation. Code Case N-32-4 and for Low-Alloy Steels,                       does not replace paragraph NC/ND 6129, "Pro- Section VIII, Division 1 and                   visions for Embedded or Inaccessible Welded
1774 Minimum Wall Thickness for Class 2 and 3 Valves, Section III, Division 1  
                              2, and Section III
7/11/77
                                                                              Joints in Piping," of the Cod
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.


====e. The intent of the====
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.
1471-1          03-09-72 Vacuum            Electron      Beam                Code Case is to (1) provide additional testing
                  01-01-78 Welding of Tube Sheet Joints,                      above Code requirement and (2) permit liquid Section III                                    penetrant or magnetic particle testing in place of
      4 Earlier date-date Code Case was approved by ASME;                      radiographic testing for Class 3 piping with 3/8"
later date-date Code Case was annulled. Where more than two dates appear, the last date is the date that the Code Case                nominal wall thickness or less.


was annulled, The middle date (or dates) was the date of re-              8 affirmation of the Code Case.                                                This revision of the Code Case was originally approved by
3/10/78
    5 Code Cases 1355-3, 1534, and 1554, which were listed in            the ASME on 8-11-75 and was annulled on 7-1-78 because of the publication of revisions to Section III in the Winter 1977 the original issue of this guide, were annulled by ASME action Addenda. However, the users did not believe that the Code prior
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.
    6 to July 1, 1974.                                               Case was covered in the Code revision; therefore, ASME reaf- Code Case 1461-1 is no longer listed as a Section III Code        firmed the Case on 11-20-78. Because of these circumstances Case and is therefore deleted from the acceptable listing.              and because there were no changes in the Code Case, the NRC
      7 The annulment of Code Case 1470-2 was effective upon              considers that this Case was in effect during the period 7-1-78 ASME approval of Code Case 1630. However, because of an                through 11-20-78.


9 oversight, the annulment was not noted until publication of                Code Case was annulled on date as indicated, but the an- Supplement No. 13 to the 1974 Code Cases.                              nulment was first indicated in Revision 12 to this guide.
1/14/77


1.84-6
RG 1.84, Rev. 39, Page 50


Paragraph (1) contains an additional require-                    3 components for fluid systems. These designa- ment to the Code. It was, therefore, acceptable                  tions should be established and justified in the but unnecessary to include in the Code Case.                     design specifications.
==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.


Paragraph (2) is a variation in the volumetric examination technique and was acceptable as written. Paragraph (3) contains an additional re-          1607-1         11-04-74    Stress Criteria for Section III,
RG 1.84, Rev. 39, Page 51 REFERENCES2F3
    quirement and is not a relaxation of the Code. It                        07-01-77    Classes 2 and 3 Vessels was, therefore, acceptable but unnecessary to in-                                    Designed      to    NC/ND-3300
    clude in the Code Case.                                                               Excluding        the    NC-3200
                                                                                          Alternate Code Case 1607-1 was acceptable subject to the
1552-1        08-29-77  Design by Analysis of Section                interpretation that the stress limit designations of (N-35-1)      07-01-79  III, Class 1 Valves                          "Upset," "Emergency," and "Faulted" do not
1553-19      03-03-75  Upset Heading and Roll                        necessarily imply agreement with specified plant
              01-01-76  Threading of SA-453 for Bolt-                conditions applicable to ASME Code Class 2 and ing in Section III                            3 components for fluid systems. These designa-
1555-1        01-14-77 Certification of Safety Relief                  tions should be established and justified in the
              01-01-78 Valves, Section III, Division 1                design specifications.


1569          03-03-7510 Design      of    Piping    for
1.
              07-01-79 Pressure Relief Valve Sta- tion, Section III                      N-55-1         04-05-84    Inertia and Continuous Drive Code Case 1569 was acceptable subject to com-              (1609)        04-05-87    Friction Welding, Section III,
    pliance with the recommendations contained in                                        Division 1 Regulatory Guide 1.67, "Installation of Over-              1614          12-17-7310 Hydrostatic Testing of Piping pressure Protection Devices."                                            01-01-79 Prior To. or Following the In- stallation of Spray Nozzles for Section III, Classes 1, 2, and
1573          04-30-73  Vacuum Relief Valves, Sec-                                        3 Piping Systems
              01-01-78  tion III                                1620          03-02-74 Stress Category for Partial
1574          04-30-73  Hydrostatic Test Pressure for          (N-6 1)      01-08-79 Penetration Welded Penetra-
              12-31-74  Safety Relief Valves, Section                        01-08-82 tions, Section III, Class 1 III                                                              Construction
1580-1        11-05-73  Buttwelded Alignment Toler-            1623          03-02-74 Design by Analysis for Section
              01-01-78  ance and Acceptable Slopes                            03-01-79 III, Class I Sleeve-Coupled for Concentric Centerlines for                                    and Other Patented Piping Section III, Class 1, 2, and 3                                    Joints Construction                            1630-1        07-10-78 External Pressure Charts for
1581          06-25-73  Power-Operated Pressure Re-            (N-66-1)      07-10-81 High Yield Strength Carbon
              03-01-79  lief Valves, Section III                                          Steels and Low Alloy Steels.


1588          08-13-73  Electro-Etching of Section III                                    (Yield Strength above 38 Ksi (N-46)       03-19-79  Code Symbols                                                      to 60 Ksi Inclusive.) For Sec-
American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section III,  
              03-19-82                                                                    tion III, Class 1, 2, 3, and MC
Rules for Construction of Nuclear Power Plant Components, Division 1, New York, NY.3F4
1601        11-05-73  Limits of Reinforcement for            1630-1         12-11-8111 External Pressure Charts for
2.
              07-01-74  Two-Thirds Area, Section III,           (N-66-1)      12-05-84 High Yield Strength Carbon Class 1                                                12-05-87 Steels and Low Alloy Steels.


1606-1      12-16-74    Stress Criteria Section III,                                      (Yield Strength above 38 Ksi
Code of Federal Regulations (CFR), Domestic Licensing of Production and Utilization Facilities Part 50, Chapter 1, Title 10, Energy.
              07-01-77  Classes 2 and 3 Piping Subject                                    to 60 Ksi Inclusive.) Section to Upset, Emergency, and                                         III, Division 1, Class 1, 2, 3, Faulted Operating Conditions                                      and MC
                                                                1633          04-29-74 Brazing of Seats to Class 1, 2, Code Case 1606-1 was acceptable subject to the                            01-01-78 and 3 Valve Body or Bonnets, interpretation that the stress limit designations of                                  Section III
      "Upset," "Emergency," and "Faulted" do not                    "1The Code Case was annulled on July 10, 1981 (ASME
    necessarily imply agreement with specified plant          mandatory annulment date). It was reinstated on Decem- ber 11, 1981. Because of the circumstances and because there conditions applicable to ASME Code Class 2 and              were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 7-10-81 through
10 Corrected date.                                              12-11-81.


1.84-7
3.


1635-112      08-12-74    Stress Criteria for Section III,        1672            11-04-74  Nuclear Valves for Section
CFR, Licenses, Certifications, and Approvals for Nuclear Power Plants, Part 52, Chapter 1, Title 10, Energy.
              07-01-77    Class 2 and 3 Valves Sub-                              03-21-77  1II, Division 1, Class 1, 2, 3 jected to Upset, Emergency,                                       Construction and       Faulted    Operating        1675            12-16-74  Tubesheet to Shell or Formed Conditions                                              07-01-76  Head Weld Joints, Section Code Case 1635-1 was acceptable subject to the                                          III, Class 1 Vessels interpretation that the stress limit designations of        16769          12-16-74  Clarification of Stress Intensi-
      "Upset," "Emergency," and "Faulted" do not                                  07-01-76  ties in Curved Pipe or Welded necessarily imply agreement with specified plant                                        Elbows,' Section III
      conditions applicable to ASME Code Class 2 and              1677            12-16-74  Clarification of Flange Design
      3 components for fluid systems. These designa-              (N-82)          03-01-79  Loads, Section III, Class 1, 2, tions should be established and justified in the                                        and 3 design specifications.                                      1678            12-16-74  Butterfly Valves of Circular
                                                                                    01-08-79  Cross Section Larger than 24
1636-112      08-12-74    Stress Criteria for Section III,                        01-01-80  in. NPS for Section III, Class
              07-01-77    Class 2 and 3 Pumps Sub-                                          2 and 3 Construction jected to Upset, Emergency,             1681-113        03-03-75  Organizations        Accepting and        Faulted    Operating        (N-84)          03-01-79  Overall Responsibility for Sec- Conditions                                                        tion III Construction
                                                                    1683-1          03-01-76  Bolt Holes for Section III,
      Code Case 1636-1 was acceptable subject to the
                                                                                    07-01-76  Class 1, 2, 3 and MC Compo- interpretation that the stress limit designations of
        "Upset," "Emergency," and "Faulted" do not                                            nent Supports
                                                                    1685          04-28-75    Furnace Brazing Section III,
      necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and                              01-01-78  Class 1, 2, 3 and MC Con- struction
        3 components for fluid systems. These designa-
                                                                    1686.          03-03-75  Furnace Brazing, Section III,
      tions should be established and justified in the
                                                                                    01-01-78    Subsection NF, Component design specifications.


Supports
4.
1651            0.8-12-74    Interim Requirements for Cer-          1689-1        09-10-76    Alternate PWHT Time and
                03-01-79    tification of Component Sup-                          01-01-78  Temperature      for    SA-182 ports, Section III,. Subsection'                                  Grade F-22, SA-387 Grade NF                                                                22, Class 2, and SA-335
1657            11-04-74 Stress Criteria for Class 2                                            Grade P-22 Section III, Class
                07-01-77 and 3 Atmospheric and Low                                              1, 2, 3 and CS
                            Pressure (0-15 psig) Steel Code Case 1689-1 was acceptable subject to the Storage Tanks
1659            11-04-74 Interconnection of Two Piping                      following condition in addition to that specified
                07-01-77 Systems for Section III, Class                    in the Code Case: The alternate postweld heat
                              1, 2, and 3 Construction                      treatment should be prequalified along with the
1660          11-04-74 Overpressure Protection Un-                        applicable welding procedure in accordance with ASME Section IX.


(N-77)         03-01-79 der Emergency            Operating Conditions for Section III,            1692            04-28-75  Rules for Design of Welded Class 1                                (N-90)         07-01-78  Class 1 Pumps
U.S. Nuclear Regulatory Commission (NRC) Regulatory Guide (RG) 1.147, Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1, Washington, DC.
1661          11-04-74 Postweld          Heat    Treatment        1695-1          11-03-75  Brazing, Section 11, Division
                01-01-78 P-No. 1 Materials for Section                              01-01-78    1, Class 3 III, Class 1 Vessels                    1700            11-03-75  Determination of Capacities
1662          11-04-74 Shop Assembly of Compo-                    (N-94)          03-19-79  of Liquid Relief Valves, Sec-
                01-01-78 nents, Appurtenances and                                    03-19-82  tion Il, Division 1, Class 1, 2, Piping Subassemblies for Sec- and 3 tion III, Class 1, 2, 3 and MC          1701-2          07-09-79    Determination of Capacities Construction                            (N-95-2)        07-09-82  of Vacuum Relief Valves,
1665          11-04-74 Pressure-Temperature Ratings                                            Section   III,  Division    1, (N-81)        07-01-78 for Class 1 Valves Made from                                            Classes 2, 3, and MC and
                            5 Cr-1/2 Mo, Section III                                            Division 2 Concrete Contain- ments
    ' 2 Code Cases 1635 and 1636 were approved by ASME on                ' 3 Code Case 1681 was approved by ASME on 12-16-74 July 1, 1974, and revised on August 12, 1974. Because Code            and revised on 3-3-75. Because Code Case 1681 was not in Cases 1635 and 1636 were not in effect on September 1, 1974,        effect on March 31, 1975, the Code Case was not included in they are not included in this guide.                                this guide.


1.84-8
5.


1702-1        07-11-77    Flanged Valves Larger than                  should provide justification in the referencing (N-96-1)      01-01-80    24 inches for Section III,                  Safety Analysis Report for the fluid selected for Division 1, Class 1, 2 and 3                use in the pressure test. The information pro- Construction                                vided should demonstrate that the fluid selected
NRC, RG 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code, Washington, DC.
1703          06-30-75    Brazing of Copper Alloys Sec-              will not have deleterious effects on the material
                01-01-78    tion III, Class' 2                          of the pressure boundary and that the fluid may
1706          06-30-75    Data Report Forms for Com-                  be safely used at the specified temperature and
                12-31-75    ponent Supports, Section 11,                pressure of the test. When the fluid selected for Class 1, 2 and 3          1,               use is the operating fluid, additional information
1711            11-03-75    Pressure Relief Valve Design                is not required.


(N-100)        01-08-79    Rules, Section III, Division 1,
6.
                01-21-82    Class 1, 2 and 3                      1729            11-03-75  Minimum          Edge    Distance-
                01-01-83                                          (N-111)          03-01-79  Bolting for Section III, Divi- sion 1, Class 1, 2, and 3 and Code Case 1711 was acceptable subject to the                                              MC Construction of Compo- following conditions in addition to those condi-                                          nent Supports tions specified in the Code Case. The following                1732            11-03-75    Hardsurfaced Valves with In- information should be provided in the Safety                  (N-114)        01-01-79    let Connections less than 2-in.


Analysis Report:                                                                          Nominal Pipe Size for Section III, Division 1 Class 1 and 2
NRC, RG 1.193, ASME Code Cases Not Approved for Use, Washington, DC.
        (1)    If stress limits are used in excess of those Construction specified for the upset operating condition,
                                                                    1733            11-03-75    Evaluation of Safe Shut Down it should be demonstrated how the pressure (N-115)        01-01-78    Earthquake Loadings for Sec- relief function is ensured. Refer to para- tion III, Division 1, Class MC
                graph 3.1, Section 1, of the Case for Class 1 Containment Vessels and paragraph 3.2, Section II, of the Case
                                                                      1734            11-03-75    Weld Design for Use for Sec- for Class 2 and 3 pressure relief valves.


(N-116)        01-01-78    tion III, Division 1, Class 1, 2,
7.
        (2)    If Case 1660 is to be used in conjunction                                          3 and MC Construction of with this Case, it should be stated that the                                        Component Supports stress limits of Case 1660 supersede those                  Code Case 1734 was acceptable subject to the of paragraph 3.2(b), Section I, of Case                    following conditions in addition to those condi-
                1711. Functional assurance of (1) above is                tions specified in the Code Case: If the configu- required in all situations.                                ration of Figure 1 of the Code Case is used for Class 1 and MC component supports, full pene-
    1712            08-11-75    Nameplates and Stamping for                  tration welds should be used. The application of (N-101)        03-01-79    Section III, Division 1, Class              the configuration shown in Figures 2 and 3
                                1, 2, 3 and MC Construction                  should be restricted to the welding of cans for as Referenced in NA-8300                    spring encapsulation in spring hanger


====s. In Figure====
NRC, RG 1.136, Design Limits, Loading Combinations, Materials, Construction, and Testing of Concrete Containments, Washington, DC
    17189          08-11-75    Design of Structural Connec-                  3, the length of the leg of the fillet weld adjacent
                    07-01-76                                                  to the plate should be equal to the thickness of tions for Linear Type Compo- nent Supports, Section III,                   the exposed end of the plate; also, the leg of the Division 1, Class 1, 2 and 3                  fillet weld adjacent to the shell should be equal to and MC                                      the thickness of the exposed end of the shell.


17199          08-11-75    Single-Welded, Full-Penetra-
8.
                                                                        1739-4        11-17-80      Pump Internal Items, Section
                    07-01-76    tion Sidewall Butt Joints in Atmospheric Storage Tanks,              (N-119-4)      12-01-83      III, Division 1, Class 1, 2, Section III, Division 1, Class 2                                    and 3
      1726          11-03-75    Refinement of Low Alloy                1744          03-01-76      Carbon Steel Pipe Flanges (N-109)        03-01-79    Steel Heat Affected Zone Un-          (N-121)        03-01-79      Larger than 24 in., Section der Overlay Cladding, Section                                        111, Division 1, Class 2 and 3 III, Division 1, Class 1 Com-                                        Construction ponents                                1765          04-26-76      Machining After Hydrostatic
      1727            12-22-75    Alternate Test Fluids, Section                        07-01-77      Testing    Class  2    and    3 (N-110)        01-01-79    III, Division 1                                                      Construction, Section III, Di- vision 1 Code Case 1727 was acceptable subject to the                1768            06-29-76      Permanent Attachments to following condition in addition to those condi-                              01-01-78      Containment      Vessels-Class MC, Section 1I1, Division tions specified in the Code Case: The applicant                                                                        I
                                                                  1.84-9


1769-1        02-16-77    Qualification of NDE Level            1808        02-16-77  F-Number Classification 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
              10-01-77    I1l Personnel, Section III, Di-                    01-01-78  Low Alloy and Carbon Steel vision 1                                                      Bare Rod        Electrodes Sec-
1774-1        07-11-77 Minimum Wall Thickness for                                       tions I, II, Il1, IV, V, VIII,
(N-142-1)    01-01-80 Class 2 and 3 Valves, Section                                    and IX
                          Ill, Division 1                        1812        03-23-77    Size of Fillet Welds for Socket
1775          08-13-76 Data Report Forms for Core (N-174)     01-07-80  Welding of Piping, Section
              08-13-79 Support Structures, Class CS,
                                                                              01-01-81    III, Division 1 Section III, Division 1
                                                                1818        03-23-77  Welded Joints in Component
1780-1        07-10-78 10 Hydrostatic      Testing    and (N-146-1)                                                        (N-175)      07-01-79    Standard Supports, Section
              12-11-81 Stamping of Components,
              01-01-82 Section        1II,    Division    1                              111, Division 1 Construction Code Case 1818 was acceptable subject to the Code Case 1780-1 was acceptable subject to the                  following condition in addition to those condi- following conditions in addition to those condi-                tions specified in the Code Case: That portion of tions specified in the Code Case: On a generic                  the unwelded housing that is limited to 900 maxi- basis, the application of the Code Case is limited              mum should include a minimum of two sectors to pumps and valves. Application to other com-                  that are uniform in length.


ponents should be treated on a case-by-case ba- sis. Each licensing application in which the Code Case is to be used should contain information showing that, as a minimum, the closure fixture            N-179        07-11-77    Openings in Valves for Sec- will impose loads that result in stresses equal to                      07-11-80    tion III, Division 1, Class 1, 2 or greater than those. induced during the hydro-                                    and 3 Construction static test of a complete pump assembly. A clo-            N-182        07-11-77    Alternate Rules for Procedure sure fixture for the part being tested that is simi-                    07-01-81    Qualification Base Material lar in size and shape to the actual mating part is                                  Orientation, Section III, Divi- considered adequate to impose these loads. It is                                    sion 1, Class 2 and 3 Con- not intended that piping reaction loadings be                                        struction simulated in the hydrostatic testing.                      N-184        07-11-77    Roll Threading of SA-453
9.
                                                                              07-01-79    Bolting for Section III, Divi-
1783-1      01-14-77    Qualification of Nondestruc-                                  sion 1, Class 1, 2, 3 or CS
              01-01-79    tive Examination Personnel,                                    Construction Section III, Division 1              N-189        08-29-77    Primary Membrane Plus Pri-
                                                                              07-01-79    mary Bending Stress Intensity Code Case 1783-1 was acceptable subject to the                                      Limits for Other Than Solid following condition in addition to those condi- Rectangular Sections for Sec- tions specified in the Code Case: The first sen- tion III, Division 1, Class MC
    tence of paragraph (1) should be replaced with Construction the following: "The certification of the Level III
    nondestructive examination personnel for the                N-193        11-21-77    Use of SB-61 and SB-62 purpose of this Section of the Code shall be the                        11-21-80    Bronze for Section III, Di- responsibility of the employer of the Level III in-                                  vision 1, Class 3 Flange and dividual. If the employer is not a Certificate                                      Socket Weld End Valves Holder, then the verification of such certificate is        N-199        03-20-78    Intervening Elements, Section the responsibility of the Certificate Holder."                          01-01-81    1II, Division 1, Classes 1, 2, 3 and MC Component Con- struction
1791        01-14-77    Projection Resistance Welding (N-154)      01-14-80    of Valve Seats, Section III,
                          Division 1, Class 1, 2 and 3              Code Case N-199 was acceptable subject to the Valves                                    following condition in addition to those condi-
1796        01-14-77    Body Neck Thickness Deter-                tions specified in the Code Case: The applicant (N-159)      07-01-78    mination for Valves with Inlet            should provide information in the referencing Connections 4-Inch Nominal                Safety Analysis Report that demonstrates that all Pipe Size and Smaller, Sec-                intervening elements have been designed in com- tion III, Division 1, Class 1, 2,          pliance with the requirements of the respective and 3                                      design specification.


1.84-10
ASTM A 708-74, Practice for Detection of Susceptibility to Intergranular Corrosion in Severely Sensitized Austenitic Stainless Steels, West Conshohocken, PA.


1693        03-20-78    Welding Procedure Qualifica-          N-252        11-19-79  Low Energy Capacitive Dis- (N-212)      01-01-81    tion of Dissimilar Metal Welds                    07-01-82  charge Welding Method for When "Buttering" with Alloy                                  Temporary or Permanent At- Weld Metal and Heat Treat-                                    tachments to Components and ment May Be Involved, Sec-                                    Supports, Section III, Division tion III, Division 1, and Sec-                                1, and XI
10. NRC, RG 1.122, Development of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components, Washington, DC.
                        tion IX                                  Code Case N-252 was acceptable subject to the N-214-2      05-25-83 Use of SA-351 Grade CN7M,                    following conditions in addition to those condi-
            12-31-83 for Valves, Section III, Divi-              tions specified in the Code Case: The applicant sion 1                                    should indicate in the Safety Analysis Report the N-217-1      01-07-80 Postweld Heat Treatment of                   application, the material, and the material thick-
            09-07-82 Weld Deposit Cladding on                    ness to which the strain gage or thermocouple
            12-05-84 Classes 1, 2, 3, MC, and CS                  will be attached by CD welding.


09-05-85 Items, Section III, Division 1
11. NRC, RG 1.61, Damping Values for Seismic Design of Nuclear Power Plants, Washington, DC.
            02-23-87                                          N-260-2      12-05-85  Weld Repair of SA-182 Type N-220        08-28-78 Code Effective Date for Com-                          12-05-88  316 Forgings, Section Il1, Di-
            07-13-81 ponent Supports, Section III,                                    vision 1, Classes 1, 2, 3, and
            07-13-84 Division 1                                                      MC
N-226        11-20-78 Temporary Attachment of
            01-01-80 Thermocouples, Section III,                  Code Case N-260-2 was acceptable subject to the Division 1, Class 1, 2 and 3              following condition in addition to those condi- tions specified in the Code Case: Type 308 L
                        Component Construction welding materials should not be used to repair N-228        03-19-79 Alternate Rules for Sequence                grade F 316 N forgings because of the difference
            03-19-82 of Completion of Code Data                  in strength levels.


Report Forms and Stamping for Section III, Class 1, 2, 3 N-261        05-15-80  Weld Procedure Qualification and MC Construction
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.
                                                                            12-13-82    for Materials with Impact Re- N-229        01-08-79 Alternate Rules for Fabrica- quirements for Section II,
            01-21-82 tion Welding SB-148 Alloy Division 1, Class 3 Construc-
            01-21-85 CDA 954 for Section III, Di-                                    tion
            01-21-88 vision 1, Class 3 Construction          N-263        03-17-80    Alternate Thread Forms, Se- N-233        01-08-79 Alternate Rules for PWHT of                          03-17-83    ries and Fits for Component
            01-21-82 P-No. 6, Group 4 Material for                                     Supports, Section III, Divi-
            09-17-84 Section III, Division 1, Class                                    sion 1
            09-17-87 1, 2, or 3 Construction N-237-2      05-25-83 Hydrostatic Testing of Inter-                Code Case N-263 was acceptable subject to the
            07-30-86 nal Piping, Section III, Di-                  following conditions in addition to those condi-
              12-07-87 vision 1, Classes 2 and 3                  tions specified in the Code Case. The following information should be provided in the Safety
            07-01-88 Analysis Report: (1) a description of the appli- N-238        05-14-79 High Temperature Furnace cation, (2) a need for the use of the Code Case,
            01-01-82 Brazing of Seat Rings in Valve              and (3) a demonstration that support design will Bodies or Bonnets for Section            withstand maximum conditions of loading with III, Division 1, Class 1, 2, and        the worst combination of thread tolerance.


3 Valves N-271        03-17-80    Simplified Method for Ana- Code Case N-238 was acceptable subject to the
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.
                                                                            02-14-86    lyzing Flat Face Flanges with following conditions in addition to those condi- Metal to Metal Contact Out- tions specified in the Code Case: The furnace                                      side the Bolt Circle for Sec- brazing process procedure qualification should                                    tion III, Class 2, 3, and MC
    include a verification for nonsensitization as                                    Construction given in ASTM A 262-70, Practices A or E, or              N-272        05-15-80    Compiling    Data    Report ASTM A 708-74 whenever materials subject to                            01-01-82    Forms, Section III, Division 1 sensitization are to be brazed. Documentation is         N-275        05-15-80    Repair of Welds, Section Il1, required that a nonsensitizing brazing procedure                      12-07-82    Division 1 was employed for valves produced to this Case.                         12-31-83
                                                        1.84-11


Code Case N-275 was acceptable subject to the                  tions specified in the Code Case: Applicants following condition in addition to those condi-                should identify in their Safety Analysis Report tions specified in the Code Case: Use of the                    (1) the minimum length of thread engagement Code Case is applicable only when the removal                  and (2) the procedure used to establish thread of an indication requires that the full weld thick-            engagement.
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.


ness be removed and, in addition, the backside of the weld assembly joint is not accessible for            N-320        07-13-81    Alternate PWHT for SA-487, the removal of examination material. If an indi-                          12-31-83  Grade CA6NM, Section III,
.  
    cation is removed and weld-metal layers still re-                                  Division 1 main; it is not acceptable to gouge through the            N-328        12-11-81 Thermit Brazing or Welding wall in order to qualify for use of the Code Case.                      09-17-84 of Nonstructural Attachments, Instead, examination of the cavity is required                          09-17-87 Section III, Division 1 when such an indication has been removed.                  N-336        06-17-82 Examination of Welds Inac-
                                                                            06-30-83 cessible During Pressure Test, Section III, Division 1, Class N-276        03-17-80  Welding of SA-358 Pipe, Sec-
                                                                            -        .  MC
            02-14-83  ti6n III,, Division 1                  N-339        06-17-82  Examination of Ends of Fillet
            02-14-86
                                                                            09-17-84  Welds, Section III, Division 1, N-279        05-15-80  Use of Torquing as a Locking Classes 1, 2, and MC
            07-13-81  Device for Section III, Divi-          N-341        06-17-82  Certification of Level III NDE
                        sion 1, Class 1, 2, 3, and MC
                                                                            05-19-85  Examiner, Section III, Divi- Component Supports
                                                                            02-23-87  sion 1 and 2 Code Case N-279 was acceptable subject to the                            07-01-88 following condition in addition to those condi-            N-346        06-17-82  Explosive Welding,      Section tions specified in the Code Case: When torquing                          05-19-85  III, Division 1 or other preloading is used as a locking device                          06-30-86 and the joint is later unloaded or disassembled,          N-347          12-07-82  Continuous      Electric  Resis- the bolting should be replaced unless it can be                          12-13-85  tance    Seam    Welding' of demonstrated or proved to the authorized nu-                                        P-No. 8 Materials for Compo- clear inspector that the original bolting has not                                  nent Supports, Section III,
    been permanently strained.                                                          Division 1 N-349          07-16-82  Pressure Testing Piping Sys-
                                                                              12-31-85  tems, Section III, Division 1, N-280        05-15-80    Alternate Rules for Examina-                                  Classes 2 and 3
            07-01-81    tion of Welds in Section III,        N-350          12-07-82  Postweld Heat Treatment- Class 3 Storage Tanks                                09-05-85  Thickness of Material, Sec- N-281        05-15-80    Welding Operator Perform-                                      tion III, Division 1
            07-01-81    ance Qualification, Section III, Division 1                            Code Case N-350 was acceptable subject to the N-282        05-15-80    Nameplates for Valves, Sec-                following condition in addition to those condi-
            05-25-83    tion III, Division 1, Class 1, 2,        tions specified in the Code Case: Applicants
            07-30-86    and 3 Construction                        wishing to use this Case for other than P-1 mate- rials should demonstrate that the use of this Case
            07-30-89 N-300        11-17-80    Pressure-Temperature        Rat-          will not adversely affect the required material
            12-01-83    ings, Hydrostatic Tests, and              properties.


Minimum Wall Thickness of Valves, Section III, Division        N-357          12-13-82  Certification of Material for
RG 1.84, Rev. 39, Page 52
                          1, Class 1                                          05-19-85  Component Supports, Section N-302        03-16-81    Tack Welding, Section IIi,                          07,-01-88  III, Division 1, Subsection NF
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.
              11-28-83  Division 1, Construction              N-359          12-13-82  Weld Connection for Coaxial N-309        05-11-81    Identification of Materials for                      12-31-84  Cylinders, Section III, Divi-
            05-11-84    Component Supports, Section                                    sion 1, Class 1 III, Division 1                      N-362-2        07-12-84  Pressure Testing of Contain- N-314        05-11-81    Alternate Rules for Thread                          04-05-87  ment Items, Section III, Divi-
            05-11-84    Engagement, Section III, Di-                        07-27-87  sion 1, Classes 1, 2, and MC
                        vision 1                                            07-01-88 N-376          05-25-83  Pressure Testing of Embedded Code Case N-314 was acceptable subject to the                            07-30-8*6  Class 2 and 3 Piping, Section following conditions in addition to those condi-                                    III, Division 1
                                                        1.84-12


N-377          04-04-83    Effective Throat Thickness of          1516-1      06-25-73    Welding of Seats in Valves for
ML20088A672)  
              12-31-83    Partial Penetration Groove                          08-11-75    Section III Applications Welds, Section III, Division 1,        1539          11-06-72  Metal Bellows and Metal Dia- Classes 1, 2, and 3                    (N-30-1)     11-21-77  phragm Stem Sealed Valves, N-383-1        07-18-85    Weld Repair of SA-182 Aus-                                      Section III, Classes 1, 2,
              09-05-85    tenitic Forgings, Section III,                                  and 3 Division 1, Classes 1, 2, and 3        1540-1        03-03-73  Elastomer Diaphragm Valves,
                                                                                01-14-77  Section III, Classes 2 and 3 Code Case N-383 was acceptable subject to the              1540-2        01-14-77  Elastomer Diaphragm Valves, following condition in addition to those condi-            (N-31)        01-07-80  Section III, Class 2 and 3 tions specified in the Code Case: Applicants who
                                                                                02-14-83 apply the provisions of this Case to permit mate-
                                                                                07-18-85 rial manufacturers to weld repair austenitic forg- ings without re-solution heat treatment should provide justification to the NRC staff (via the                  Code Case 1540-2 (N-31) was acceptable subject Safety Analysis Report) why this is acceptable for              to the following conditions in addition to those their applications, including their evaluation of                conditions specified in the Code Case: Each ap- the susceptibility for stress corrosion cracking.              plicant who applies the Code Case should indi- cate in the referencing Safety Analysis Report N-397          02-20-84    Alternative Rules to the Spec-              that the service life of the elastomer diaphragm
              02-20-87    tral Broadening Procedures of              should not exceed the manufacturer's recom- N-1226.3 for Classes 1, 2,                  mended service life. This recommended service and 3 Piping, Section III, Di-              life should not exceed 1/3 of the minimum cycle vision 1                                    life as established by the requirements of para- Code Case N-397 was acceptable subject to the                    graph 3 of the Code Case. In addition, the serv- following condition in addition to those condi-                  ice life of the elastomer diaphragm should not tions specified in the Code Case. The Code Case                  exceed 5 years, and the combined service and is acceptable for specific plant applications on a              storage life of the elastomer diaphragm should case-by-case basis pending revision of Regulatory                not exceed 10 years.


Guide 1.122, "Development of Floor Design Re- sponse Spectra for Seismic Design of Floor-                  1541-1      08-13-73  Hydrostatic Testing of Em- Supported Equipment or Components.                                       09-30-76  bedded Class 2 and Class 3 Piping for Section III Con- N-413          02-14-85    Minimum Size of Fillet Welds struction
13. NRC, RG 1.31, Control of Ferrite Content in Stainless Steel Weld Metal, Washington, DC.
              02-14-88    for Subsection NF Linear
                                                                  1541-2      09-30-76  Hydrostatic Testing of Em- Type Supports, Section III,
                                                                                05-15-78  bedded Class 2 and Class 3 Division I
                                                                                          Piping for Section III, Divi- N-421          02-14-85    Brazing Using a Radiant En-                                    sion 1 Construction
              05-19-85    ergy Source, Section III, Divi-
                                                                  1552        12-18-72  Design by Analysis of Section
              06-30-86    sion 1
                                                                                08-29-77  III, Class 1 Valves
      3. Code Cases that were endorsed by the NRC in              1553        12-18-72    Upset Heading and Roll a prior version of this guide and were superseded by                            03-03-75  Threading of SA-453 for Bolt- revised Code Cases on or after July 1, 1974, should                                        ing, Section III
be considered as not endorsed as of the date of the                1555        12-18-72    Certification of Safety Relief ASME action that approved the revised version of                               01-14-77  Valves on Liquids the Code Cases. These Code Cases that are no longer                1606        11-05-73    Stress Criteria for Section III,
endorsed are listed in the following by number,                                12-16-74    Class 2 and 3 Piping Sub- effective dates, 14 and title.                                                            jected to Upset, Emergency, and      Faulted    Operating
15081s        12-13-71    Allowable Stresses, Design In-                                  Conditions
                06-30-75    tensity and/or Yield Strength Code Case 1606 was acceptable subject to the Values, Section I, 11, and                interpretation that the stress limit designations of VIII, Divisions 1 and 2
                                                                      "Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant
    '"Earlier date-date Code Case was approved by ASME;
later date-dale revision of Code Case was approved by                  conditions applicable to ASME Code Class 2 and ASME.                                                                  3 components for fluid systems. These designa-
    15Code Case 1508 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceptable            tions should be established and justified in the listing.                                                              design specifications.


1.84-13
14. NRC, RG 1.44, Control of the Use of Sensitized Stainless Steel, Washington, DC.


1607        11-05-73  Stress Criteria for Section Ill,     N-62-5      07-24-89  Internal and External Valve
15. NRC, RG 1.67, Installation of Over-Pressure Protection Devices, Washington, DC.
            11-04-74  Classes 2 and 3 Vessels Sub-                      12-11-89  Items, Section III, Division 1, jected to Upset, Emergency,                                  Class 1, 2 and 3 and Faulted Operating Condi-                                                                It Code Case N-62-5 was acceptable subject to the tions following condition in addition to those condi- Code Case 1607 was acceptable subject to the                tions specified in the Code Case: The Code re- interpretation that the stress limit designations of         quires that Class 1 and Class 2 valve manufactur-
    "Upset," "Emergency," and "Faulted" do not                  ers meet the provisions of NCA 4000, "Quality necessarily imply agreement with specified plant            Assurance," and, in addition, Class 3 valve conditions applicable to ASME Code Class 2 and              manufacturers should also meet the provisions of
    3 components for fluid systems. These designa-              NCA 4000.


tions should be established and justified in the design specifications.                                   1630        11-04-74  External Pressure Charts for (N-77)      07-10-78  High Yield Strength Carbon Steels and Low Alloy Steels.
16. NRC, NUREG-0800, Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition, Washington, DC.


1609-1       03-01-76  Inertia and Continuous Drive                                (Yield strength above 38 Ksi (N-55)      08-28-78  Friction Welding, Section I;                                to 60 Ksi Inclusive.) For Sec-
RG 1.84, Rev. 39, Appendix A, Page A-1 APPENDIX A
            07-13-81  III, IV, VIII, Division 1 and                                tion III, Class 1, 2, 3, and
            04-05-84   2, and IX                                                    MC; and Section VIII, Divi-
1621-2      05-25-77  Internal and External Valve                                  sion 1 and 2 (N-62-2)    05-15-80  Items, Section III, Division 1,     1683        03-03-75  Bolt Holes for Section III, Di-
            05-25-83  Class 1, 2 and 3 Line Valves                      03-01-76  vision 1, Class 1, 2, 3 and MC
            07-18-85                                                                Component Supports
                                                            1689        06-30-75  Alternate PWHT Time and Code Case 1621-2 (N-62-2) was acceptable sub-
                                                                          09-10-76  Temperature      for    SA-182 ject to the following condition in addition to Grade F22 Section III, Class those conditions specified in the Code Case: The
                                                                                    1, 2, 3 and CS
    Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000,              Code Case 1689 was acceptable subject to the
    "Quality Assurance," and, in addition, Class 3              following condition in addition to that specified valve manufacturers should also meet the provi-              in the Code Case: The alternate postweld heat sions of NCA 4000.                                          treatment should be prequalified along with the applicable welding procedure in accordance with ASME Section IX.


N-62-3      07-18-85  Internal and External Valve
SUPPLEMENTS ADDRESSED IN REVISION 39 OF REGULATORY GUIDE 1.84
            .09-05-85  Items, Section Il, Division 1,
                                                            1695        04-28-75  Brazing, Section III, Class 3 Class 1, 2 and 3 Line Valves
                                                                          11-03-75 Code Case N-62-3 was acceptable subject to the          1701        06-30-75  Determination of Capacities following condition in addition to those condi-                      03-20-78  of Vacuum Relief Valves Sec- tions specified in the Code Case: The Code re-                                  tion III, Class MC
    quires that Class 1 and Class 2 valve manufactur-        1701-1      03-20-78  Determination of Capacities ers meet the provisions of NCA 4000, "Quality            (N-95-1)    03-19-79  of Vacuum Relief Valves, Assurance," and, in addition, Class 3 valve                          07-09-79  Section III, Division 1 and manufacturers should also meet the provisions of                                2, Class MC
    NCA 4000.                                                1702        06-30-75  Flanged Valves Larger than
                                                                          07-11-77  24 inches for Section III,
                                                                                    Class 1, 2 and 3 Construc- N-62-4      09-05-85  Internal and External Valve                                  tion
            07-27-88  Items, Section III, Division 1,      1720        08-11-75  Weld End Preparation for
            07-24-89  Class 1, 2 and 3                                  03-01-76  Section III, Division 1 Con- struction Code Case N-62-4 was acceptable subject to the following condition in addition to those condi-              Code Case 1720 was acceptable subject to the tions specified in the Code Case: The Code re-              following condition in addition to those condi- quires that Class 1 and Class 2 valve manufactur-            tions specified in the Code Case: Weld end ers meet the provisions of NCA 4000, "Quality                preparations other than those shown in Figures Assurance," and, in addition, Class 3 valve                  1, 2, and 3 of the Code Case are not acceptable manufacturers should also meet the provisions of            on a generic basis. Such alternative end prepara- NCA 4000.                                                    tions should be treated on a case-by-case basis.


1.84-14
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


1720-1       03-01-76    Weld End Preparation for                    Code Case 1780 was acceptable subject to the
1 Annulled.
              11-20-78    Section III, Division 1 Con-                following conditions in addition to those condi- struction                                  tions specified in the Code Case: Each licensing Code Case 1720-1 was acceptable subject to the                  application in which the Code Case is to be used following condition in addition to those condi-                should present information that satisfactorily tions specified in the Code Case: The acceptance                demonstrates that the subassembly tests ade- of weld end preparations other than those shown                quately simulate the pressure loadings. Also, the in Figures 1, 2, and 3 of the Code Case should                  closure fixture for the test subassembly should be evaluated on a case-by-case basis.                            adequately simulate the rigidity of adjacent sub- assemblies and also simulate the interface load-
1739-2        08-28-78    Pump Internal Items, Section                ings from adjacent subassemblies that would re- (N-119-2) 08-25-80        III, Division 1, Class 1, 2,                sult from a hydrostatic pressure test of a and 3                                      complete pump assembly. As a minimum, the
1739-3        08-25-80 Pump Internal Items, Section                  closure fixture should impose loads that result in (N-119-3) 11-17-80 III,Division 1, Class 1, 2,                        stresses equal to or greater than those induced and 3                                      during the hydrostatic test of a complete pump
1739-4        02-20-8416 Pump Internal Items, Section                  assembly. It is not intended that piping reaction (N- 119-4) 07-18-85 III, Division 1, Class 1, 2,                      loadings be simulated in the hydrostatic testing.


and 3 N-119-5      07-18-85 Pump Internal Items, Section            1783          09-10-76    Qualification of Nondestruc-
2 This is a Division 2 Code Case and is addressed in RG 1.136.
              09-05-85 III, Division 1, Class 1, 2,                            01-14-77    tive Personnel, Section III,
                          and 3                                                            Division 1
1745          03-01-76 Stress Indices for Structural                  Code Case 1783 was acceptable subject to the (N-122)      01-08-79 Attachments, Class 1, Sec-                      following condition in addition to those condi-
              01-21-82 tion III, Division 1                          tions specified in the Code Case: The first sen-
              01-21-85                                                tence of paragraph (1) should be replaced with
              01-21-88                                                the following: "The certification of the Level III
              07-24-89                                                nondestructive examination personnel for the
1761          04-26-76 Use of SB-148 Alloy CA954                      purposes of this Section of the Code shall be the
              01-14-77 for Section III, Division 1,                    responsibility of the employer of the Level III in- Class 2 or 3 Flanged End                    dividual. If the employer is not a Certificate Valves                                      Holder, then the verification of such certificate is
1761-1        01-14-77    Use of SB-148 Alloy CA954,                the responsibility of the Certificate Holder."
(N-133)      01-07-80    Section III, Division 1, Class 3
              04-02-82                                          1791          03-17-8017  Projection Resistance Welding N-133-1      04-02-82    Use of SB-148 Alloys 952 and        (N-154)        09-09-82    of Valve Seats, Section III,
              05-19-85    954, Section III, Division 1,                      09-05-85    Division 1, Class 1, 2 and 3 Class 3                                              12-05-85    Valves N-133-2       05-19-85.    Use of SB-148 Alloys 952 and        1797          03-23-77    Finned Tubing for Construc-
              07-18-85    954 Section III, Division 1,        (N-160)        03-17-80    tion, Section III, Division 1 Class 3                                            09-07-82
1769          08-13-76    Qualification of NDE Level                          07-18-85
              02-16-77    III Personnel, Section III, Di-      N-192          01-09-78    Use of Flexible Hose for Sec- vision 1                                            08-30-79    tion III, Division 1, Class 1, 2,
1774          08-13-76    Minimum Wall Thickness for                                      and 3 Construction
              07-11-77    Class 2 and 3 Valves, Section              Code Case N-192 was acceptable subject to the III, Division 1                            following conditions in addition to those condi-
1780          09-10-76    Hydrostatic    Testing    and             tions specified in the Code Cas


====e. The applicant====
3 This is a Division 3 Code Case and is not addressed in this RG.
              03-10-78    Stamping of Pumps for Class 1              should indicate system application, design and Construction, Section III, Di-              operating pressure, and pressure-temperature vision 1                                    rating of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/
  '6 The Code Case was annulled on December 1, 1983                7
                                                                    ' The Code Case was annulled on January 14, 1980
(ASME mandatory annulment date). It was reinstated on Feb-      (ASME mandatory annulment date). It was reinstated on ruary 20, 1984. Because of the circumstances and because        March 17, 1980. Because of the circumstances and because there were no changes in the Code Case, the NRC considers        there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 12-1-83        that this Case was in effect during the period of 1-14-80
through 2-20-84.                                                through 3-17-80.


1.84-15
4 This is a Division 5 Code Case and is not addressed in this RG.


under regulatory position C.1 acceptable for                    3. Components ordered to a Code Case that was appropriate use. Other Code Cases may be                  previously approved for use need not be changed considered for use in accordance with footnote 6 of        because the Code Case has been subsequently the Codes and Standards rule, §50.55a of 10 CFR            annulled.
5 This Code Case is not acceptable for use (See RG 1.193).  


Part 50.                                                        4. Code Cases on the approved list may be applied to components that were in process of
APPENDIX B
    2. Components ordered to a specific version of a      construction prior to the effective date of the Code Code Case need not be changed because a                    Case within the limits specified in the Code Case and subsequent revision to the Code Case is listed as the      applicable regulations or recommended in other approved version in this guide.                            regulatory guides.
NUMERICAL LISTING OF CURRENT SECTION III CODE CASES
AND TABLE WHERE EACH CODE CASE IS LISTED


1.84-18
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
APPENDIX B
                NUMERICAL LISTING OF CODE CASES
NUMERICAL LISTING OF CURRENT SECTION III CODE CASES  
N-31-1                        N-284              N-395 N-62-6                        N-292              N-410
AND TABLE WHERE EACH CODE CASE IS LISTED
N-106-2 (1720-2)              N-304-4            N-411-1 N-119-6                      N-309-1            N-412 N-133-3                      N-313 N-414 N-154-1                      N-315 N-420
N-155-2 (1792-2)              N-316 N-430
N-160-1                      N-318-4 N-433 N-192-2                      N-319-1 N-442 N-196-1                      N-345-1 N-215                                            N-452 N-368 N-240                        N-369              N-453-1 N-241                        N-391-1            N-454 N-243                        N-392-1            N-455 N-247                        N-393              N-464 N-262                        N-394              N-476 THIS DOCUMENT WAS PRINTED USING RECYCLED PAPER
                              1-84-19


UNITED STATES                                  FIRST CLASS MAIL
RG 1.84, Rev. 39, Appendix B, Page B-2 Code Case Number Approval Date Table Where Code Case Is Listed N-748
NUCLEAR REGULATORY COMMISSION                        POSTAGE AND FEES PAID
9/9/08 Division 3 N-755-4
    WASHINGTON, D.C. 20555                                    USNRC
5/11/17 Table 2 N-756
                                                          PERMIT NO. G-67 OFFICIAL BUSINESS
1/21/07 Table 1 N-757-1
    PENALTY FOR PRIVATE USE, $300
9/21/07 Table 2 N-759-2
                                          .1 IbA
1/4/08 Table 1 N-760-2
                                        kUp  c)s F
10/10/08 Table 1 N-761
                                    EP            Gc c')}}
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

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

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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°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

CODE CASE

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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°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

RG 1.84, Rev. 39, Page 41 CODE CASE

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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

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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°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

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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