Regulatory Guide 1.84: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(StriderTol Bot change)
 
(21 intermediate revisions by the same user not shown)
Line 1: Line 1:
{{Adams
{{Adams
| number = ML13064A111
| number = ML21181A225
| issue date = 07/31/1993
| issue date = 12/17/2021
| title = 9, 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 29
| document report number = RG-1.084, Rev 39
| package number = ML21181A221
| document type = Regulatory Guide
| document type = Regulatory Guide
| page count = 20
| page count = 55
}}
}}
{{#Wiki_filter:U.S. NUCLEAR REGULATORY  
{{#Wiki_filter:U.S. NUCLEAR REGULATORY COMMISSION  
COMMISSION
 
REGO. 1 TORY Revision 29 July 1993 GUIDE OFFICE OF NUCLEAR REGULATORY
REGULATORY GUIDE 1.84, REVISION 39
RESEARCH REGULATORY  
 
GUIDE 1.84 DESIGN AND FABRICATION
Issue Date: December 2021 Technical Lead: Bruce Lin
CODE CASE ACCEPTABILITY
 
ASME SECTION III DIVISION 1
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==
Section 50.55a, "Codes and Standards," of 10 CFR Part 50, "Domestic Licensing of Production and Utilization Facilities," requires, in part, that com-ponents of the reactor coolant pressure boundary be designed, fabricated, erected, and tested in accor-dance with the requirements for Class 1 components of S~ection III, "Nuclear Power Plant Components," 1 of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code or equiva-lerit quality standards.
Purpose


Footnote 6 to §50.55a states that the use of specific Code Cases may be authorized by the Commission upon request pursuant to§ 50.55a (a) (3), which requires that proposed alterna-tives to the described requirements or portions thereof provide an acceptable level of quality and safety.General Design Criterion
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).  
1, "Quality Standards and Records," of Appendix A, "General Design Cri-teria for Nuclear Power Plants," to 10 CFR Part 50 requires, in part, that structures, systems, and compo-nents important to safety be designed, fabricated, erected, and tested to quality standards commensu-rate with the importance of the safety function to be performed.


Where generally recognized codes and'Copies may be obtained from the American Society of Me-chanical Engineers, United Engineering Center, 345 East 47th Street, New York, New York 10017.standards are used, Criterion
Applicability 
1 requires that they be identified and evaluated to determine their applicabil- ity, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keeping with the required safety functio


====n. Criterion ====
This RG applies to reactor licensees and applicants subject to 10 CFR Part 50, Section 50.55a, Codes and standards.
30, "Quality of Reactor Coolant Pres-sure Boundary," of the same appendix 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.


Appendix B, "Quality Assurance Criteria for Nu-clear Power Plants and Fuel Reprocessing Plants," to 10 CFR Part 50 requires, in part, that measures be established for the control of special processing of materials and that proper testing be performed.
Applicable Regulations


This regulatory guide lists those Section III ASME Code Cases oriented to design and fabrication that are generally acceptable to the NRC staff for im-plementation in the licensing of light-water-cooled niu-clear power plants.-Any information collection activities mentioned in this regulatory guide are contained as requirements in 10 CFR Part 50, which provides the regulatory ba-sis for this guide. The information collection require-ments in 10 CFR Part 50 have been approved by the USNlRC REGULATORY
*
GUIDES Regulatory Guides are issued to describe and make available to the pub-lic such information as methods acceptable to the NRC staff for imple-menting specific parts of the Commission's regulations, techniques used by the staff in evaluating specific problems or postulated acci-dents, and data needed by the NRC staff in Its review of applications for permits and licenses.
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.


Regulatory Guides are not substitutes for regula-tions, and compliance with them Is not required.
*
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.


Methods and solutions different from those set out in the guides will be acceptable if they pro-vide a basis for the findings requisite to the issuance or continuance of a permit or license by the Commission.
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.


This guide was Issued after consideration of comments received from the public. Comments and suggestions for improvements in these guides are encouraged at all times, and guides will be revised, as ap-propriate, to accommodate comments and to reflect new information or experience.
*
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.


Written comments may be submitted to the Regulatory Publications Branch, DFIPS, ADM, U.S. Nuclear Regulatory Commission, Washing-ton, DC 20555.The guides are issued in the following ten broad divisions:
*
1. Power Reactors 6. Products 2. Research and Test Reactors
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.


===7. Transportation===
Related Guidance
3. Fuels and Materials Facilities
8. Occupational Health 4. Environmental and Siting 9. Antitrust and Financial Review 5. Materials and Plant Protection
10. General Copies of issued guides may be purchased from the Government Printing Office at the current GPO price. Information on current GPO prices may be obtained by contacting the Superintendent of Documents, U.S.Government Printing Office, Post Office Box 37082, Washington, DC 20013-7082, telephone
(202)512-2249 or (202)512-2171.


Issued guides may also be purchased from the National Technical Infor-mation Service on a standing order basis. Details on this service may be obtained by writing NTIS, 5285 Port Royal Road, Springfield, VA 22161.
*
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.


Office of Management and Budget, Approval No.3150-0011.
*
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==
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-.vide for alternative requirements under special cir-.cumstances.
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 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.
 
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 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.


Most Code Cases are eventually superseded by revision to the Code and then are annulled by action of the ASME. In such cases, the intent of the annulled Code Case becomes part of the revised Code, and therefore continued use of the Code Case intent is sanctioned under the rules of the Code. In other cases, the Code Case is annulled because it is no longer acceptable or there is no further requirement for it. A Code Case that was approved for a particular situation and not for a generic: application should be used only for construction of the approved situation because annulment of such a Code Case could result in construction that would not meet Code requirements.
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.


The Code Cases listed in this guide are limited to those cases applicable to Section III that are oriented toward design and fabrication.
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.


All published Code Cases in the area of design and fabrication that are applicable to Section III of* the Code and were in effect on August 14, 1991.were reviewed for inclusion in this guide. In addition to the listing of acceptable Code Cases, this revision of the guide includes listings of (1) Code Cases that were identified as acceptable in a prior version of this regulatory guide and that were annulled after the original issuance of this guide (June 1974) and (2) Code Cases that were identified as acceptable in a prior version of this regulatory guide and that were;superseded by revised Code Cases after the original issuance of this guide (June 1974). Code Cases that are not listed herein are either not endorsed or will require supplementary provisions on an individual basis to attain endorsement status.The endorsement of a Code Case by this guide: constitutes acceptance of its technical position for applications not precluded by regulatory or other requirements or by the recommendations in this or other regulatory guides. Contingent endorsement is, indicated in regulatory position C.1.c for specific: cases. However, it is the responsibility of the user to make certain that no regulatory requirements are: violated and that there are no conflicts with other*Lines indicate substantive changes from Revision 28.recommended limitations resulting from Code Case usage.Acceptance or endorsement by the NRC staff applies only to those Code Cases or Code Case revisions with the date of ASME approval as shown in the regulatory position of this guide. Earlier or later revisions of a Code Case are not endorsed by this guide. New Code Cases will require evaluation by the NRC staff to determine if they qualify for inclusion in the approved list. Because of the continuing change in the status of Code Cases, it is planned that this guide will require periodic updating to accommodate new Code Cases and any revisions of existing Code Cases.C. REGULATORY
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.
POSITION 1. The Section III ASME Code Cases 2 listed below (by number, date of ASME approval, and title)are acceptable to the NRC staff for application in the construction of components for light-water-cooled nuclear power plants. Their use is acceptable within the limitations stated in the "Inquiry" and "Reply" sections of each individual Code Case, within the limitations of such NRC or other requirements as~may exist, and within the additional limitations recommended by the NRC staff given with the individual Code Case in the listing. The categorization of Code Cases used in this guide is intended to facilitate the Code Case listing and is not intended to indicate a limitation on its usage.a. Design-oriented Code Cases (Code Case number, date of ASME approval, 3 and title): (1) Code Cases applicable to piping design: N-160-1 07-18-85 07-18-88 03-14-91 Finned Tubing for Construc-tion, Section III, Division 1 Ný453-1 11-30-88 Nickel-Chromium-Molybde- num-Copper Stainless Steel (UNS N08925) Seamless and Welded Pipe for Class 2 and 3 Construction Section III, Divi-sion 1 N-454 12-07-87 Nickel-Chromium-Molybde-
12-03-90 num-Copper Stainless Steel (UNS N08925) Wrought Fittings for Class 2 and 3 Construction Section III, Divi-sion 1 2 A numerical listing of the Code Cases appears in the ap-pendix.3 M'hen 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 the ASME.-1.84-2 N-455 12-07-87 Nickel-Chromium-Molybde-
12-03-90 num-Copper Stainless Steel (UNS N08925) Forged Flanges and Fittings for Class 2 and 3 Construction Section III, Division 1 (2) Code Cases applicable to valve design: N-133-3 07-18-85 07-18-88 03-14-91 N-313 05-11-81 11-28-83 11-28-86 11-28-89 Use of SB-148 Alloys 952 and 954 Section III, Division 1, Class 3 Alternate Rules for Half-Coupling Branch Connec-tions, Section III, Division 1 N-394 02-20-84 Restricting Lift to Achieve 07-30-86 Reduced Relieving Capacities
07-30-89 of Full Lift, Nozzle Type, and Flat Seated Safety and Safety Relief Valves for Compress-ible Fluid Applications, Sec-tion III, Division 1, Classes 2 and 3 N-410 12-05-84 Certified Relieving Capacities
07-27-88 of Pressure Relief Valves 03-14-91 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 N-442 02-23-87 1977 Addendum to ANSI/04-30-90 ASME PTC 25.3-1976, Safety and Safety Relief Valves, Class 1, 2, 3, and MC, Section III, Division 1 N-309-1 12-05-85 Identification of Materials for 07-27-88 Component Supports, Section 03-14-91 Ill, Division 1 N-411-1 02-20-86 Alternative Damping Values 02-20-89 for Response Spectra Analysis of Classes 1, 2, and 3 Piping, Section III, Division 1 Code Case N-411-1 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: (1) The Code Case damping should be used completely and consistently, if used at all. (For equipment other than piping, the damping values specified in Regulatory Guide 1.61, "Damping Values for Seismic Design of Nuclear Power Plants," should be used.) (2) The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been em-ployed. Such use should be limited only to re-sponse spectral analyses (similar to that used in the study supporting its acceptance-Reference NUREG/CR-3526).
The acceptance of the use with other types of dynamic analyses (e.g., time-history analysis 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 in-creased motion on existing clearances and on line mounted equipment should be checked. (4) This Code Cage is not appropriate for analyzing the dynamic response of piping systems using sup-ports 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-ble to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.N-420 02-14-85 Linear Energy Absorbing Sup-02-14-88 ports for Subsection NF, 03-14-91 Classes 1, 2, and 3 Construc-tion, Section III, Division 1 Code Case N-420 is acceptable subject to the: fol-lowing conditions in addition to those conditions specified in the Code Case. Each applicant desir-ing to use the Code Case should provide the fol-lowing information prior to implementing the Case: (1) indication of systems in which energy-absorbing supports are to be used, (2) fatigue de-sign, (3) piping system analysis results considering inelastic behavior of supports, and (4) plans for inservice examination of energy absorbers.
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.


N-433 12-16-86 Non-Threaded Fasteners for 12-16-89 Section III, Division 1, Class 1, 2, and 3 Component and Piping Supports, Section IIi, Division 1 (3) Other Code Cases related to design: I N-119-6 09-05-85 07-27-88 03-14-91 N-196-1 01-08-79 01-21-82 01-21-85 01-21-88 12-03-90 N-243 08-30-79 07-16-82 05-19-85 05-19-88 03-14-91 N-247 07-09-79 01-21-82 01-21-85 01-21-88 03-14-91 Pump Internal Items, Section Ill, Division 1, Class 1, 2, and 3 Exemption from the Shake-down Requirements When Plastic Analysis is Performed for Section III Division 1, Class 1 and CS Construction Boundaries Within Castings Used for Core Support Struc-tures, Section III, Division 1, Class CS Certified Design Report Sum-mary for Component Stan-dard Supports, Section III, Division 1, Class 1, 2, 3 and MC I 1.84-3 N-476 05-06-89 Class 1, 2, 3, and MC Linear Component Supports-Design Criteria for Single Angle Members, Section III, Divi-sion 1, Subsection NF b. Fabrication-oriented Code Cases: (1) Code Cases related to welding and brazing: N-154-1 12-05-85 Projection Resistance Welding 12-05-88 of Valve Seats, Section III, Division 1, Class 1, 2 and 3 Valves N-262 01-07-80 Electric Resistance Spot 09-07-82 Welding for Structural Use in 09-05-85 Component Supports, Section 07-27-88 III, Division 1 in the Code Case: The following typographical er-rors need to be corrected:
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.
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.N-392-1 12-11-89 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attach-ments on Classes 2 and 3 Pip-ing, Section III, Division 1 Code Case N-392-1 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys-tem where the Case is to be applied.N-393 11-28-83 Repair Welding Structural
07-30-86 Steel Rolled Shapes and 07-30-89 Plates for Component Sup-ports, Section III, Division 1 N-395 12-11-89 Laser -Welding, Section III, Division 1 N-452 03-08-89 Specialized Subcontracted Welding Process (Electron Beam Welding), Section III, Division I N-464 03-08-89 Laser Welding of Lap-Joints, Section III, Division 1, Class 2 and 3 Construction
(2) Other Code Cases related to fabrication:
03-14-91 N-304-4 02-23-87 12-11-89 N-315 02-14-83 02-19-86 02-19-89 Use of 20Cr-25Ni-6Mo (Alloy UNS N08366) Plate, Sheet, Strip and Welded Pipe, Class 2 and 3 Section III, Division 1 Repair of Bellows, Section III, Division 1 Code Case N-315 is acceptable subject to the fol-lowing conditions in addition to those conditions specified in the Code Case: Prior to implementa- tion of the Code Case, the applicant should pre-sent a description of the repair and a justification why the bellows should be repaired rather than replaced.


Following receipt of approval for the repair, but prior to making the repair, the appli-cant should present the results of the qualification on the full-scale facsimile bellows, including the design requirements, to ensure that the repair meets the requirements of the design specifica- tion.I I I N-316 12-11-81 09-17-84 09-17-87 08-14-90 N-345-1 12-13-82 06-30-88 03-14-91 Alternate Rules for Fillet Weld Dimensions for Socket Welded Fittings, Section III, Division 1, Class 1, 2, and 3 Attachment of AMS 5382 Alloy 31 Seat Rings by Fric-tion Welding, Section III, Division 1, Classes 1, 2, and 3 N-240 03-19-79 01-21-82 09-17-84 09-17-87 08-14-90 N-241 07-09-79 01-21-82 09-17-84 09-17-87 12-11-89 N-368 07-06-83 06-30-87 08-14-90 Hydrostatic Testing of Open Ended Piping, Section III, Division 1 Hydrostatic Testing of Piping, Section III, Division 1 Pressure Testing of Pump Discharge, Section III, Divi-sion 1, Classes 2 and 3 I N-391-1 07-24-89 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attach-ments on Class 1 Piping, Sec-tion III, Division 1 Code Case N-391-1 is acceptable subject to the following conditions in addition to those specified Code Case N-368 is acceptable subject to the fol-lowing condition in addition to those conditions specified in the Code Case: Applicants using this Code Case should provide information to demon-strate that the length of discharge piping is rea-sonably short.N-369 02-14-83 Resistance Welding of Bel-02-19-86 lows, Section III, Division 1 02-19-89 1.84-4 N-414 02-20-86 Tack Welds for Class 1, 2, 3 02-20-89 and MC Components and Piping Supports, Section III, Division 1 N-430 02-28-86 Alternative Requirements for 02-28-89 Welding Workmanship and Visual Acceptance Criteria for Class 1, 2, 3 and MC Linear-Type and Standard Supports, Section III, Division 1 Code Case N-430 is acceptable subject to the fol-lowing conditions in addition to those conditions specified in the Code Case: (1) The applicant should demonstrate that the applicable supports are not subject to cyclic loading in excess of 20,000 cycles and (2) the first sentence of 3.0(f)(1)  
3/16/84 N-92
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 in. on one side for one-half the length of the weld, and 1/16 in. for one-fourth 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." c. Code Cases with contingent approval: manufacturers should also meet the provisions of NCA 4000.1720-2 11-20-78 (N-106-2)
(1698)  
08-28-81 09-17-84 09-17-87 08-14-90 Weld End Preparation for Section III, Division 1 Con-struction I I N-31-1 07-18-85 Elastomer Diaphragm Valves, 07-18-88 Section III, Class 2 and 3 03-14-91 Code Case N-31-1 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: Each applicant who applies the Code Case should indicate in the referencing Safety Analysis Report that the serv-ice life of the elastomer diaphragm should not ex-ceed the manufacturer's recommended service life. This recommended service life should not exceed 1/3 of the minimum cycle life as estab-lished by the requirements of paragraph
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.
3 of the Code Case. In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.N-62-6 12-11-89 Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 Code Case N-62-6 is acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The Code re-quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve Code Case 1720-2 (N-106-2)
is acceptable sub-ject to the following condition in addition to those conditions specified in the Code Case: The ac-ceptance 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.1792-2 01-08-79 Fiberglass Reinforced Ther-(N-155-2)
01-21-82 mosetting Resin Pipe, Section 01-21-85 III, Division 1 01-21-88 03-14-91 Code Case 1792-2 (N-155-2)
is acceptable sub-ject to the following condition in addition to those conditions specified in the Code Case: The appli-cant should comply with the additional require-ments that are specified in Regulatory Guide 1.72, "Spray Pond Piping Made from Fiberglass- Reinforced Thermosetting Resin." N-192-2 09-16-81 Use of Braided Flexible Con-09-17-84 nectors, Section III, Division 09-17-87 1, Class 2 and 3 08-14-90 Code Case N-192-2 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: The applicant should indicate system application, design and operating pressure, and pressure-temperature rat-ing of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC/ND-3649.4(e), are re-quired to be furnished with the application.


N-284 08-25-80 Metal Containment Shell 05-25-83 Buckling Design Methods, 07-30-86 Section III, Division 1, Class 07-30-89 MC Code Case N-284 is acceptable subject to the fol-lowing condition in addition to those conditions specified in the Code Case: Prior to implementa- tion of the Code Case, the applicant must dem-onstrate to the satisfaction of the NRC staff (via Safety Analysis Report) that any axisymmetric techniques that are proposed will be applicable to a vessel having large asymmetric openings and that the overall margin used to prevent shell buckling is acceptable.
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


1.84-5 N-292 01-05-81 Depositing Weld Metal Prior 11-28-83 to Preparing Ends for Weld-07-30-86 ing, Section III, Division 1, 07-30-89 Class 1, 2, and 3 Construction Code Case N-292 is acceptable subject to the fol-lowing conditions in addition to those conditions specified in the Code Case: Class 3 piping that is longitudinally welded and that has a weld effi-ciency factor of 1.0 as selected from Table ND-3613.4-1 should receive a 100 percent volumetric examination (RT or UT) of the depos-ited weld metal in accordance with the require-ments of ND-5000.N-318-4 12-11-89 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping, Section III, Division 1 Code Case N-318-4 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys-tem where the Case is to be applied.2. Code Cases that were endorsed by the NRC in a prior version of this guide and were later annulled by action of the ASME should be considered as deleted from the list of acceptable Code Cases as of the date of the ASME action that approved the annulment.
RG 1.84, Rev. 39, Page 30  
CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III  
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
valves.


Such Code Cases, which were annulled on or after July 1, 1974, are listed below by number, effective dates, 4 and title.5 1361-2 03-09-72 Socket Welds, Section III 03-01-79 Code Case 1361-2 was acceptable when used in connection with Section III, paragraph NB-3356, Fillet Welds.1461-16 03-09-72 Electron Beam Welding, Sec-02-16-77 tion 1, 111, and VIII, Division 1 and 2 4 Earlier date-date Code Case was approved by ASME;later date-date Code Case was annulled.
(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.


Where more than two dates appear, the last date is the date that the Code Case was annulled.
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.


The middle date (or dates) was the date of re-affirmation of the Code Case.5 Code Cases 1355-3, 1534, and 1554, which were listed in the original issue of this guide, were annulled by ASME action prior to July 1, 1974.6 Code Case 1461-1 is no longer listed as a Section III Code Case and is therefore deleted from the acceptable listing.1470-27 12-18-72 External Pressure Charts for 11-04-74 High-Strength Carbon Steels and for Low-Alloy Steels, Section VIII, Division 1 and 2, and Section III 1471-1 03-09-72 Vacuum Electron Beam 01-01-78 Welding of Tube Sheet Joints, Section III 1477-1 03-09-72 Use of 1970 Addenda of 01-01-78 ANSI B31.7, Section III 1494-1 03-03-73 Weld Procedure Qualification
8/14/93 N-110
01-01-78 Test, Section III 1506 12-13-71 Stress Intensification Factors, 01-01-78 Section III, Class 2 and 3 Piping 1516-2 08-11-75 Welding of Seats or Minor In-(N-24) 07-01-78 ternal Permanent Attach-ments in Valves for Section III Applications
(1727)  
1516-2 11-20-788 Welding of Seats or Minor In-(N-24) 01-01-80 ternal Permanent Attach-ments in Valves for Section III Applications
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.
15339 06-14-72 Pressure Temperature Ratings 07-01-75 of SA-351 Grades CF8A, CF3, and CF3M, Section III 1535-2 04-30-73 Hydrostatic Testing of Section 03-21-77 III, Class 1 Valves 1536 08-14-72 Closing Seam for Electrical
07-01-77 Penetrations for Section III, Class 2, 3, and MC 1539-1 11-21-77 Metal Bellows and Metal (N-30-1) 01-01-81 Diaphragm Stem Sealed Valves, Section III, Division 1, Classes 1, 2, and 3 1541-3 05-15-78 Hydrostatic Testing of Em-(N-32-3) 07-01-79 bedded Class 2 and Class 3 Piping for Section III, Divi-sion 1 Construction N-32-4 03-16-81 Hydrostatic Testing of Ern-03-16-84 bedded Class 2 and 3 Piping for Section III, Division 1 Construction Code Case N-32-4 was. acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: 7 The annulment of Code Case 1470-2 was effective upon ASME approval of Code Case 1630. However, because of an oversight, the annulment was not noted until publication of Supplement No. 13 to the 1974 Code Cases.eThis revision of the Code Case was originally approved by 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 Addenda. However, the users did not believe that the Code Case was covered in the Code revision;
therefore, ASME reaf-firmed the Case on 11-20-78.


Because of these circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period 7-1-78 through 11-20-78.9 Code Case was annulled on date as indicated, but the an-nulment was first indicated in Revision 12 to this guide.i.84-6 The acceptance was based on the following clari-fication and interpretation.
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.


Code Case N-32-4 does not replace paragraph NC/ND 6129, "Provi-sions 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 requirement and (2) permit liquid penetrant or magnetic particle testing in place of radiographic testing for Class 3 piping with 3/8" nominal wall thickness or les
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.


====s. Paragraph ====
1/1/82 N-175
(1) contains an additional requirement to the Code. It was, therefore, acceptable but un-necessary to include in the Code Case. Paragraph (2) is a variation in the volumetric examination technique and was acceptable as written. Para-graph (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.1606-1 12-16-74 Stress Criteria Section III, 07-01-77 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 applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.
(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.


1607-1 11-04-74 Stress Criteria for Section III, 07-01-77 Classes 2 and 3 Vessels Designed to NC/ND-3300
7/1/79 N-199 Intervening Elements, Section III, Division 1, Classes 1, 2, 3, and MC
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 applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.
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.


N-55-1 04-05-84 Inertia and Continuous Drive (1609) 04-05-87 Friction Welding, Section I1I, Division 1 1552-1 (N-35-1)1553-19 08-29-77 07-01-79 03-03-75 01-01-76 Design by Analysis of Section III, Class 1 Valves Upset Heading and Roll Threading of SA-453 for Bolt-ing in Section III 1555-1 01-14-77 Certification of Safety Relief 01-01-78 Valves, Section III, Division 1 1569 03-03-7510
1/1/81  
Design of Piping for 07-01-79 Pressure Relief Valve Sta-tion, Section III Code Case 1569 was acceptable subject to com-pliance with the recommendations contained in Regulatory Guide 1.67, "Installation of Over-pressure Protection Devices." 1573 04-30-73 Vacuum Relief Valves, Sec-01-01-78 tion III 1574 04-30-73 Hydrostatic Test Pressure for 12-31-74 Safety Relief Valves, Section III 1580-1 11-05-73 Buttwelded Alignment Toler-01-01-78 ance and Acceptable Slopes for Concentric Centerlines for Section III, Class 1, 2, and 3 Construction
1614 12-17-7310Hydrostatic Testing of Piping 01-01-79 Prior To or Following the In-stallation of Spray Nozzles for Section III, Classes 1, 2, and 3 Piping Systems 1620 03-02-74 (N-61) 01-08-79 01-08-82 Stress Category for Partial Penetration Welded Penetra-tions, Section III, Class 1 Construction
1623 1581 06-25-73 03-01-79 1588 08-13-73 (N-46) 03-19-79 03-19-82 1601 11-05-73 07-01-74 Power-Operated Pressure Re-lief Valves, Section III Electro-Etching of Section III Code Symbols Limits of Reinforcement for Two-Thirds Area, Section III, Class 1 03-02-74 Design by Analysis for Section 03-01-79 III, Class I Sleeve-Coupled and Other Patented Piping Joints 1630-1 07-10-78 External Pressure Charts for (N-66-1) 07-10-81 High Yield Strength Carbon Steels and Low Alloy Steels.(Yield Strength above 38 Ksi to 60 Ksi Inclusive.)
For Sec-tion III, Class 1, 2, 3, and MC 1°Corrected date.1.84-7
1630-1 12-11-8111 External Pressure Charts for (N-66-1) 12-05-84 High Yield Strength Carbon 12-05-87 Steels and Low Alloy Steels.(Yield Strength above 38 Ksi to 60 Ksi Inclusive.)
Section III, Division 1, Class 1, 2, 3, and MC 1633 04-29-74 Brazing of Seats to Class 1, 2, 01-01-78 and 3 Valve Body or Bonnets, Section III 1635-112 08-12-74 Stress Criteria for Section III, 07-01-77 Class 2 and 3 Valves Sub-jected 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 applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.


1636-112 08-12-74 Stress Criteria for Section III, 07-01-77 Class 2 and 3 Pumps Sub-jected 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 applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.
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.


1660 11-04-74 Overpressure Protection Un-(N-77) 03-01-79 der Emergency Operating Conditions for Section III, Class 1 1661 11-04-74 Postweld Heat Treatment 01-01-78 P-No. 1 Materials for Section III, Class 1 Vessels 1662 11-04-74 Shop Assembly of Compo-01-01-78 nents, Appurtenances and Piping Subassemblies for Sec-tion III, Class 1, 2, 3 and MC Construction
(2) In Figure A, y shall be implemented with the understanding that it denotes max.
1665 11-04-74 Pressure-Temperature Ratings (N-81) 07-01-78 for Class 1 Valves Made from 5 Cr-1/2 Mo, Section III 1672 11-04-74 Nuclear Valves for Section 03-21-77 III, Division 1, Class 1, 2, 3 Construction
1675 12-16-74 Tubesheet to Shell or Formed 07-01-76 Head Weld Joints, Section III, Class 1 Vessels 16769 12-16-74 Clarification of Stress Intensi-07-01-76 ties in Curved Pipe or Welded Elbows, Section III 1677 12-16-74 Clarification of Flange Design (N-82) 03-01-79 Loads, Section III, Class i, 2, and 3 1678 12-16-74 Butterfly Valves of Circular 01-08-79 Cross Section Larger than 24 01-01-80 in. NPS for Section III, Class 2 and 3 Construction
16 81-113 03-03-75 Organizations Accepting (N-84) 03-01-79 Overall Responsibility for Sec-tion III Construction
1683-1 03-01-76 Bolt Holes for Section III, 07-01-76 Class 1, 2, 3 and MC Compo-nent Supports 1685 04-28-75 Furnace Brazing Section III, 01-01-78 Class 1, 2, 3 and MC Con-struction 1686 03-03-75 Furnace Brazing, Section III, 01-01-78 Subsection NF, Component Supports 1689-1 09-10-76 Alternate PWHT Time and 01-01-78 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 Code Case 1689-1 was acceptable subject to the following condition in addition to that specified in the Code Case: The alternate postweld heat treat-ment should be prequalified along with the appli-1 3 Code Case 1681 was approved by ASME on 12-16-74 and revised on 3-3-75. Because Code Case 1681 was not in effect on March 31, 1975, the Code Case was not included in this guide.1651 1657 1659 08-12-74 Interim Requirements for Cer-03-01-79 tification of Component Sup-ports, Section III, Subsection NF 11-04-74 Stress Criteria for Class 2 07-01-77 and 3 Atmospheric and Low Pressure (0-15 psig) Steel Storage Tanks 11-04-74 Interconnection of Two Piping 07-01-77 Systems for Section Ill, Class 1, 2, and 3 Construction"The Code Case was annulled on July 10, 1981 (ASME mandatory annulment date). It was reinstated on Decem-ber 11, 1981. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 7-10-81 through 12-11-81.'2 Code Cases 1635 and 1636 were approved by ASME on July 1, 1974, and revised on August 12, 1974. Because Code Cases 1635 and 1636 were not in effect on September
1, 1974, they are not included in this guide.1.84-8 cable welding procedure in accordance with ASME Section IX.1692 04-28-75 Rules for Design of Welded (N-90) 07-01-78 Class 1 Pumps 1695-1 11-03-75 Brazing, Section III, Division 01-01-78 1, Class 3 1700 11-03-75 Determination of Capacities (N-94) 03-19-79 of Liquid Relief Valves, Sec-03-19-82 tion III, Division 1, Class 1, 2, and 3 1701-2 07-09-79 Determination of Capacities (N-95-2) 07-09-82 of Vacuum Relief Valves, Section III, Division 1, Classes 2, 3, and MC and Division 2 Concrete Contain-ments 1702-1 07-11-77 Flanged Valves Larger than (N-96-1) 01-01-80 24 inches for Section III, Division 1, Class 1, 2 and 3 Construction
1703 06-30-75 Brazing of Copper Alloys Sec-01-01-78 tion III, Class 2 1706 06-30-75 Data Report Forms for Com-12-31-75 ponent Supports, Section III, Class 1, 2 and 3 1711 11-03-75 Pressure Relief Valve Design (N-100) 01-08-79 Rules, Section III, Division 1, 01-21-82 Class 1, 2 and 3 01-01-83 Code Case 1711 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. The following information should be provided in the Safety Analysis Report: (1) If stress limits are used in excess of those specified for the upset operating condition, it should be demonstrated how the pressure relief function is ensured. Refer to para-graph 3. 1, Section I, of the Case for Class 1 and paragraph
3.2, Section II, of the Case for Class 2 and 3 pressure relief valves.(2) If Case 1660 is to be used in conjunction with this Case, it should be stated that the stress limits of Case 1660 supersede those of paragraph
3.2(b), Section I, of Case 1711.Functional assurance of (1) above is re-quired in all situations.


1712 08-11-75 Nameplates and Stamping for (N-101) 03-01-79 Section III, Division 1, Class 1, 2, 3 and MC Construction as Referenced in NA-8300 17189 08-11-75 Design of Structural Connec-07-01-76 tions for Linear Type Compo-nent Supports, Section III, Division 1, Class 1, 2 and 3 and MC 17199 08-11-75 Single-Welded, Full-Penetra-
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.
07-01-76 tion Sidewall Butt Joints in Atmospheric Storage Tanks, Section III, Division 1, Class 2 1726 11-03-75 Refinement of Low Alloy (N-109) 03-01-79 Steel Heat Affected Zone Un-der Overlay Cladding, Section III, Division 1, Class 1 Com-ponents 1727 12-22-75 Alternate Test Fluids, Section (N-110) 01-01-79 III, Division 1 Code Case 1727 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The applicant should provide justification in the referencing Safety Analysis Report for the fluid selected for use in the pressure test. The information pro-vided 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.1729 11-03-75 Minimum Edge Distance-(N-111) 03-01-79 Bolting for Section III, Divi-sion 1, Class 1, 2, and 3 and MC Construction of Compo-nent Supports 1732 11-03-75 Hardsurfaced Valves with In-(N-114) 01-01-79 let Connections less than 2-in.Nominal Pipe Size for Section III, Division 1 Class 1 and 2 Construction
1733 11-03-75 Evaluation of Safe Shut Down (N-115) 01-01-78 Earthquake Loadings for Sec-tion III, Division 1, Class MC Containment Vessels 1734 11-03-75 Weld Design for Use for Sec-(N-116) 01-01-78 tion III, Division 1, Class 1, 2, 3 and MC Construction of Component Supports Code Case 1734 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: If the configu-ration of Figure 1 of the Code Case is used for Class 1 and MC component supports, full pene-tration 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 1.84-9 to the plate should be equal to the thickness of the exposed end of the plate; also, the leg of the fillet weld adjacent to the shell should be equal to the thickness of the exposed end of the shell.1739-4 11-17-80 Pump Internal Items, Section (N-119-4)
12-01-83 III, Division 1, Class 1, 2, and 3 1744 03-01-76 Carbon Steel Pipe Flanges (N-121) 03-01-79 Larger than 24 in., Section III, Division 1, Class 2 and 3 Construction
1765 04-26-76 Machining After Hydrostatic
07-01-77 Testing Class 2 and 3 Construction, Section III, Di-vision 1 1768 06-29-76 Permanent Attachments to 01-01-78 Containment Vessels-Class MC, Section III, Division 1 1769-1 02-16-77 Qualification of NDE Level 10-01-77 III Personnel, Section III, Di-vision 1 1774-1 07-11-77 Minimum Wall Thickness for (N-142-1)
01-01-80 Class 2 and 3 Valves, Section III, Division 1 1775 08-13-76 Data Report Forms for Core 08-13-79 Support Structures, Class CS, Section III, Division 1 1780-1 07-10-78 1 0 Hydrostatic (N-146-1)
12-11-81 Stamping , of 01-01-82 Section III, Construction Testing and Components, Division 1 the following: "The certification of the Level III nondestructive examination personnel for the purpose of this Section of the Code shall be the responsibility of the employer of the Level III in-dividual.


If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder." 1791 01-14-77 Projection Resistance Welding (N-154) 01-14-80 of Valve Seats, Section III, Division 1, Class 1, 2 and 3 Valves 1796 01-14-77 Body Neck Thickness Deter-(N-159) 07-01-78 mination for Valves with Inlet Connections
1/1/82 N-242-1 Materials Certification, Section III, Division 1, Classes 1, 2, 3, MC, and CS  
4-Inch Nominal Pipe Size and Smaller, Sec-tion III, Division 1, Class 1, 2, and 3 1808 02-16-77 F-Number Classification of 01-01-78 Low Alloy and Carbon Steel Bare Rod Electrodes Sec-tions I, II, III, IV, V, VIII, and IX 1812 03-23-77 Size of Fillet Welds for Socket (N-174) 01-07-80 Welding of Piping, Section 01-01-81 III, Division 1 1818 03-23-77 Welded Joints in Component (N-175) 07-01-79 Standard Supports, Section III, Division 1 Code Case 1818 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: That portion of the unwelded housing that is limited to 900 maxi-mum should include a minimum of two sectors that are uniform in length.N-179 07-11-77 Openings in Valves for Sec-07-11-80 tion III, Division 1, Class 1, 2 and 3 Construction N-182 07-11-77 Alternate Rules for Procedure 07-01-81 Qualification Base Material Orientation, Section III, Divi-sion 1, Class 2 and 3 Con-struction N-184 07-11-77 Roll Threading of SA-453 07-01-79 Bolting for Section III, Divi-sion 1, Class 1, 2, 3 or CS Construction N-189 08-29-77 Primary Membrane Plus Pri-07-01-79 mary Bending Stress Intensity Limits for Other Than Solid Rectangular Sections for Sec-tion III, Division 1, Class MC Construction N-193 11-21-77 Use of SB-61 and SB-62 11-21-80 Bronze for Section III, Di-vision 1, Class 3 Flange and Socket Weld End Valves Code Case 1780-1 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: On a generic basis, the application of the Code Case is limited to pumps and valves. Application to other com-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 will impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly.
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.


A closure fix-ture for the part being tested that is similar in size and shape to the actual mating part is considered adequate 'to impose these loads. It is not intended that piping reaction loadings be simulated in the hydrostatic testing.1783-1 01-14-77 Qualification of Nondestruc-
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
01-01-79 tive Examination Personnel, Section III, Division 1 Code Case 1783-1 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The first sen-tence of paragraph
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.
(1) should be replaced with 1.84-10
N-199 03-20-78 Intervening Elements, Section 01-01-81 III, Division 1, Classes 1, 2, 3 and MC Component Con-struction Code Case N-199 was acceptable subject to the following condition in addition to those condi-tions specified in the Code. Case: The applicant should provide information in the referencing Safety Analysis Report that demonstrates that all intervening elements have been designed in com-pliance with the requirements of the respective design specification.


1693 03-20-78 Welding Procedure Qualifica-(N-212) 01-01-81 tion of Dissimilar Metal Welds When "Buttering".
7/1/82 N-260-2 Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1, Classes 1, 2,  
with Alloy Weld Metal and Heat Treat-ment May Be Involved, Sec-tion III, Division 1, and Sec-tion IX N-214-2 05-25-83 Use of SA-351 Grade CN7M, 12-31-83 for Valves, Section III, Divi-sion 1 N-215 1 4 05-15-78 Integrally Finned Titanium 05-15-81 Tubes, Section III, Division 1, Class 3 Construction N-217-1 01-07-80 Postweld Heat Treatment of 09-07-82 Weld Deposit Cladding on 12-05-84 Classes 1, 2, 3, MC, and CS 09-05-85 Items, Section III, Division 1 02-23-87 N-237-2 05-25-83 07-30-86 12-07-87 07-01-88 Hydrostatic Testing of Inter-nal Piping, Section III, Di-vision 1, Classes 2 and 3 N-238 05-14-79 High Temperature Furnace 01-01-82 Brazing of Seat Rings in Valve Bodies or Bonnets for Section III, Division 1, Class 1, 2, and 3 Valves Code Case N-238 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: The furnace brazing process procedure qualification should in-clude a verification for nonsensitization as given in ASTM A 262-70, Practices A or E, or ASTM A 708-74 whenever materials subject to sensitiza- tion are to be brazed. Documentation is required that a nonsensitizing brazing procedure was em-ployed for valves produced to this Case.N-252 11-19-79 Low Energy Capacitive Dis-07-01-82 charge Welding Method for Temporary or Permanent At-tachments to Components and Supports, Section III, Division 1, and XI Code Case N-252 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: The applicant should indicate in the Safety Analysis Report the application, the material, and the material thick-ness to which the strain gage or thermocouple will be attached by CD welding.N-260-2 12-05-85 Weld Repair of SA-182 Type 12-05-88 316 Forgings, Section III, Di-vision 1, Classes 1, 2, 3, and MC Code Case N-260-2 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Type 308 L welding materials should not be used to repair grade F 316 N forgings because of the difference in strength levels.N-261 05-15-80 Weld Procedure Qualification
3, and MC  
12-13-82 for Materials with Impact Re-quirements for Section HII, Division 1, Class 3 Construc-tion N-263 03-17-80 Alternate Thread Forms, Se-03-17-83 ries and Fits for Component Supports, Section III, Divi-sion 1 Code Case N-263 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. The following information should be provided in the Safety N-220 08-28-78 07-13-81 07-13-84 N-226 11-20-78 01-01-80 Code Effective Date for Com-ponent Supports, Section III, Division 1 Temporary Attachment of Thermocouples, Section III, Division 1, Class 1, 2 and 3 Component Construction N-228 03-19-79 Alternate Rules for Sequence 03-19-82 of Completion of Code Data Report Forms and Stamping for Section III, Class 1, 2, 3 and MC Construction N-229 01-08-79 01-21-82 01-21-85 01-21-88 N-233 01-08-79 01-21-82 09-17-84 09-17-87 Alternate Rules for Fabrica-tion Welding SB-148 Alloy CDA 954 for Section III, Di-vision 1, Class 3 Construction Alternate Rules for PWHT of P-No. 6, Group 4 Material for Section III, Division 1, Class 1, 2, or 3 Construction
Type 308L welding materials should not be used to repair Grade F 316 N  
1 4 Code Case N-215 was annulled effective May 15, 1981. It was removed from active Code Case listing with this Revision 29 of Regulatory Guide 1.84.1.84-11 Analysis Report: (1) a description of the applica-tion, (2) a need for the use of the Code Case, and (3) a demonstration that support design will withstand maximum conditions of loading with the worst combination of thread tolerance.
forgings because of the difference in strength levels.


N-271 03-17-80 Simplified Method for Ana-02-14-86 lyzing Flat Face Flanges with Metal to Metal Contact Out-side the Bolt Circle for Sec-tion III, Class 2, 3, and MC Construction N-272 05-15-80 Compiling Data Report 01-01-82 Forms, Section III, Division 1 N-275 05-15-80 Repair of Welds, Section III, 12-07-82 Division 1 12-31-83 Code Case N-275 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Use of the Code Case is applicable only when the removal of an indication requires that the full weld thickness be removed and, in addition, the backside of the weld assembly joint is not accessible for the re-moval of examination material.
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.


If an indication is removed and weld-metal layers still remain, it is not acceptable to gouge through the wall in order to qualify for use of the Code Case. Instead, ex-amination of the cavity is required when such an indication has been removed.N-276 03-17-80 Welding of SA-358 Pipe, Sec-02-14-83 tion III, Division 1 02-14-86 N-279 05-15-80 Use of Torquing as a Locking 07-13-81 Device for Section III, Divi-sion 1, Class 1, 2, 3, and MC Component Supports Code Case N-279 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: 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 nu-clear inspector that the original bolting has not been permanently strained.N-280 05-15-80 Alternate Rules for Examina-07-01-81 tion of Welds in Section III, Class 3 Storage Tanks N-281 05-15-80 Welding Operator Perform-07-01-81 ance Qualification, Section III, Division 1 N-282 05-15-80 Nameplates for Valves, Sec-05-25-83 tion III, Division 1, Class 1, 2, 07-30-86 and 3 Construction
(2) Justify the need for the use of the Code Case.
07-30-89 N-300 11-17-80 Pressure-Temperature Rat-12-01-83 ings, Hydrostatic Tests, and Minimum Wall Thickness of Valves, Section III, Division 1, Class 1 N-302 03-16-81 Tack Welding, Section III, 11-28-83 Division 1, Construction N-309 05-11-81 Identification of Materials for 05-11-84 Component Supports, Section III, Division 1 N-314 05-11-81 Alternate Rules for Thread 05-11-84 Engagement, Section III, Di-vision 1 Code Case N-314 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: Applicants should identify in their Safety Analysis Report (1)the minimum length of thread engagement and (2) the procedure used to establish thread en-gagement.N-320 07-13-81 Alternate PWHT for SA-487, 12-31-83 Grade CA6NM, Section III, Division 1 N-328 12-11-81 Thermit Brazing or Welding 09-17-84 of Nonstructural Attachments, 09-17-87 Section III, Division 1 N-336 06-17-82 Examination of Welds Inac-06-30-83 cessible During Pressure Test, Section III, Division 1, Class MC N-339 06-17-82 Examination of Ends of Fillet 09-17-84 Welds, Section III, Division 1, Classes 1, 2, and MC N-341 06-17-82 Certification of Level III NDE 05-19-85 Examiner, Section III, Divi-02-23-87 sion 1 and 2 07-01-88 N-346 06-17-82 05-19-85 06-30-86 Explosive Welding, III, Division 1 Section N-347 12-07-82 Continuous Electric Resis-12-13-85 tance Seam Welding of P-N0. 8 Materials for Compo-nent Supports, Section III, Division 1 N-349 07-16-82 Pressure Testing Piping Sys-12-31-85 tems, Section III, Division 1, Classes 2 and 3 N-350 12-07-82 Postweld Heat Treatment-
09-05-85 Thickness of Material, Sec-tion III, Division 1 Code Case N-350 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Applicants wish-ing to use this Case for other than P-1 materials should demonstrate that the use of this Case will 1.84-12 not adversely affect the required material proper-ties.N-357 12-13-82 Certification of Material for 05-19-85 Component Supports, Section 07-01-88 III, Division 1, Subsection NF N-359 12-13-82 Weld Connection for Coaxial 12-31-84 Cylinders, Section III, Divi-sion 1, Class 1 N-362-2 07-12-84 Pressure Testing of Contain-04-05-87 ment Items, Section III, Divi-07-27-87 sion 1, Classes 1, 2, and MC 07-01-88 N-376 05-25-83 Pressure Testing of Embedded 07-30-86 Class 2 and 3 Piping, Section III, Division 1.N-377 04-04-83 Effective Throat Thickness of 12-31-83 Partial Penetration Groove Welds, Section III, Division 1, Classes 1, 2, and 3 N-383-1 07-18-85 Weld Repair of SA-182 Aus-09-05-85 tenitic Forgings, Section III, Division 1, Classes 1, 2, and 3 Code Case N-383 was acceptable subject to the'following condition in addition to those condi-tions specified in the Code Case: Applicants who apply the provisions of this Case to permit mate-rial manufacturers to weld repair austenitic forg-ings without re-solution heat treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.N-397 02-20-84 Alternative Rules to the Spec-02-20-87 tral Broadening Procedures of N-1226.3 for Classes 1, 2, and 3 Piping, Section III, Di-vision I Code Case N-397 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case. The Code Case is acceptable for specific plant applications on a case-by-case basis pending revision of Regulatory Guide 1.122, "Development of Floor Design Re-sponse Spectra for Seismic Design of Floor-Supported Equipment or Components." N-412 04-15-85 Alternative Rules for Witness-04-15-88 ing the Piping System Pressure 04-15-91 Tests of Classes 1, 2, and 3 Piping Systems, Section III, Division 1 N-413 02-14-85 Minimum Size of Fillet Welds 02-14-88 for Subsection NF Linear Type Supports, Section III, Division 1 N-421 02-14-85 Brazing Using a Radiant En-05-19-85 ergy Source, Section III, Divi-06-30-86 sion 1 3. Code Cases that were endorsed by the NRC in a prior version of this guide and were superseded by revised Code Cases on or after July 1, 1974, should be considered as not endorsed as of the date of the ASME action that approved the revised version of the Code Cases. These Code Cases that are no longer endorsed are listed in the following by number, effective dates, 1 5 and title.150816 12-13-71 Allowable Stresses, Design In-06-30-75 tensity and/or Yield Strength Values, Section I, III, and VIII, Divisions
1 and 2 1516-1 06-25-73 Welding of Seats in Valves for 08-11-75 Section III Applications
1539 11-06-72 Metal Bellows and Metal Dia-(N-30-1) 11-21-77 phragm Stem Sealed Valves, Section III, Classes 1, 2, and 3 1540-1 03-03-73 Elastomer Diaphragm Valves, 01-14-77 Section III, Classes 2 and 3 1540-2 01-14-77 Elastomer Diaphragm Valves, (N-31) 01-07-80 Section III, Class 2 and 3 02-14-83 07-18-85 Code Case 1540-2 (N-31) was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: Each ap-plicant who applies the Code Case should indi-cate in the referencing Safety Analysis Report that the service life of the elastomer diaphragm should not exceed the manufacturer's recom-mended service life. This recommended service life should not exceed 1/3 of the minimum cycle life as established by the requirements of para-graph 3 of the Code Case. In addition, the serv-ice life of the elastomer diaphragm should not ex-ceed 5 years, and the combined service and stor-age life of the elastomer diaphragm should not exceed 10 years.1541-1 08-43-73 Hydrostatic Testing of Em-09-30-76 bedded Class 2 and Class 3 Piping for Section III Con-struction 1541-2 09-30-76 Hydrostatic Testing of Em-05-15-78 bedded Class 2 and Class 3 Piping for Section III, Divi-sion 1 Construction
1552 12-18-72 Design by Analysis of Section 08-29-77 III, Class 1 Valves 1 5 Earlier date-date Code Case was approved by ASME;later date-date revision of Code Case was approved by ASME.1 6 Code Case 1508 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceplable listing.1.84-13
155 155 160 3 12-18-72 Upset Heading and Roll 03-03-75 Threading of SA-453 for Bolt-ing, Section III 5 12-18-72 Certification of Safety Relief 01-14-77 Valves on Liquids 6 11-05-73 Stress Criteria for Section 111, 12-16-74 Cla~s 2 and 3 Piping Sub-jected to Upset, Emergency, and Faulted Operating Conditions Code Case 1606 was acceptable subject to the in-terpretation that the stress limit designations of"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.


7 11-05-73 Stress Criteria for Section III, 11-04-74 Classes 2 and 3 Vessels Sub-jected to Upset, Emergency, and Faulted Operating Condi-tions Code Case 1607 was acceptable subject to the in-terpretation that the stress limit designations of"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.
(3) Demonstrate that the support design will withstand maximum conditions of loading with the worst combination of thread tolerance.


quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.N-62-4 09-05-85 07-27-88 07-24-89 Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 160 Code Case N-62-4 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The Code re-quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.N-62-5 07-24-89 Internal and External Valve 12-11-89 Items, Section III, Division 1, Class 1, 2 and 3 Code Case N-62-5 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The Code re-quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.1630 11-04-74 External Pressure Charts for (N-77) 07-10-78 High Yield Strength Carbon Steels and Low Alloy Steels.(Yield strength above 38 Ksi to 60 Ksi Inclusive.)
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,  
For Sec-tion III, Class 1, 2, 3, and MC; and Section VIII, Divi-sion 1 and 2 1683 03-03-75 Bolt Holes for Section III, Di-03-01-76 vision 1, Class 1, 2, 3 and MC Component Supports 1689 06-30-75 Alternate PWHT Time and 09-10-76 Temperature for SA-182 Grade F22 Section III, Class 1, 2, 3 and CS Code Case 1689 was acceptable subject to the following condition in addition to that specified in the Code Case: The alternate postweld heat treat-ment should be prequalified along with the appli-cable welding procedure in accordance with ASME Section IX.1609-1 03-01-76 (N-55) 08-28-78 07-13-81 04-05-84 1621-2 05-25-77 (N-62-2) 05-15-80 05-25-83 07-18-85 Inertia and Continuous Drive Friction Welding, Section I, III, IV, VIII, Division 1 and 2, and IX Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 Line Valves Code Case 1621-2 (N-62-2) was acceptable sub-ject to the following.
requirements.


condition in addition to those conditions specified in the Code Case: The Code.requires that Class 1 and Class 2 valve manufac-turers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.N-62-3 07-18-85 Internal and External Valve 09-05-85 Items, Section III, Division 1, Class 1, 2 and 3 Line Valves Code Case N-62-3 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The Code re-1695 1701 04-28-75 Brazing, Section II, Class 3 11-03-75 06-30-75 Determination of Capacities
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
03-20-78 of Vacuum Relief Valves Sec-tion III, Class MC 1.84-14
12/31/83
1701-1 03-20-78 Determination of Capacities (N-95-1) 03-19-79 of Vacuum Relief Valves, 07-09-79 Section III, Division 1 and 2, Class MC 1702 06-30-75 Flanged Valves Larger than 07-11-77 24 inches for Section III, Class 1, 2 and 3 Construc-tion 1720 08-11-75 Weld End Preparation for 03-01-76 Section III, Division 1 Con-struction Code Case 1720 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: 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.1720-1 03-01-76 Weld End Preparation for 11-20-78 Section III, Division 1 Con-struction Code Case 1720-1 was acceptable subject to the following condition in addition to those condi-t4ons specified in the Code Case: 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.1761 04-26-76 Use of SB-148 Alloy CA954 01-14-77 for Section III, Division 1, Class 2 or 3 Flanged End Valves.01-14-77 Use of SB-148 Alloy CA954, 01-07-80 Section III, Division 1, Class 3 1761-1 (N-133)N-133-1 N-133-2 1769 1774 1780 04-02-82 04-02-82 Use of SB-148 Alloys 952 and 05-19-85 954, Section III, Division 1, Class 3 05-19-85 Use of SB-148 Alloys 952 and 07-18-85 954 Section III, Division 1, Class 3 08-13-76 Qualification of NDE Level 02-16-77 III Personnel, Section III, Di-vision 1 08-13-76 Minimum Wall Thickness for 07-11-77 Class 2 and 3 Valves, Section III, Division 1 09-10-76 Hydrostatic Testing and 03-10-78 Stamping of Pumps for Class 1 Construction, Section III, Di-vision 1 1739-2 08-28-78 (N-119-2)
08-25-80 1739-3 08-25-80 (N-119-3)
11-17-80 Pump Internal .Items, Section III, Division 1, Class 1, 2, and 3 Pump Internal Items, Section III,Division
1, Class 1, 2, and 3 Code Case 1780 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: Each licensing application in which the Code Case is to be used should present information that satisfactorily demonstrates that the subassembly tests ade-quately simulate the pressure loadings.


Also, the closure fixture for the test subassembly should adequately simulate the rigidity of adjacent subas-semblies and also simulate the interface loadings from adjacent subassemblies that would result from a hydrostatic pressure test of a complete pump assembly.
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.


As a minimum, the closure fix-ture should impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly.
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.


It is not intended that piping reaction loadings be simulated in the hydrostatic testing.1739-4 02-20-8417Pump Internal Items, S/ection (N-119-4)
7/13/81 N-292 Depositing Weld Metal Prior to Preparing Ends for Welding, Section III,  
07-18-85 III, Division 1, Class 1, 2, and 3 N-119-5 07-18-85 Pump Internal Items, Section 09-05-85 III, Division 1, Class 1, 2, and 3 1745 03-01-76 Stress Indices for Structural (N-122) 01-08-79 Attachments, Class 1, Sec-01-21-82 01-21-85 01-21-88 07-24-89 tion III, Division 1 1783 09-10-76 Qualification of Nondestruc-
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.
01-14-77 tive Personnel, Division 1 Section III,'7 The Code Case was annulled on December 1, 1983 (ASME mandatory annulment date). It was reinstated on Feb-ruary 20, 1984. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 12-1-83 through 2-20-84.Code Case 1783 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The first sen-tence of paragraph
(1) 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 in-dividual.


If the employer is not a Certificate
2/20/04 N-310-1 Certification of Bolting Materials, Section III, Division 1, Class 1, 2, 3, MC, and CS
1.84-15 Holder, then the verification of such certificate is the responsibility of the Certificate Holder." 1791 03-17-8018 Projection Resistance Welding (N-154) 09-09-82 of Valve Seats, Section II, 09-05-85 Division 1, Class 1, 2 and 3 12-05-85 Valves 1797 03-23-77 Finned Tubing for Construc-(N-160) 03-17-80 tion, Section III, Division 1 09-07-82 07-18-85 N-192 01-09-78 Use of Flexible Hose for Sec-08-30-79 tion III, Division 1, Class 1, 2, and 3 Construction Code Case N-192 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. The applicant should indicate system application, design and operating pressure, and pressure-temperature rat-ing of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC/ND-3649.4(e), are re-quired to be furnished with the application.
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.


N-192-1 08-30-79 Use of Flexible Hose for Sec-09-16-81 tion III, Division 1, Class 1, 2, and 3 Construction Code Case N-192-1 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: The applicant should indicate system application, design and operating pressure, and pressure-temperature rat-ing of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC/ND-3649.4(e), are re-quired to be furnished with the application.
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.


N-196 01-09-78 Exemption from the Shake-01-08-79 down Requirements When Plastic Analysis is Performed for Section III, Division 1, Class 1 Construction N-237 07-09-79 01-21-82 09-07-82 N-237-1 09-07-82 05-25-83 N-260 01-07-80 05-25-83 07-18-85 Hydrostatic Testing of Inter-nal Piping, Section III, Divi-sion 1 Hydrostatic Testing of Inter-nal Piping, Section III, Divi-sion 1, Classes 2 and 3 Weld Repair of SA-182 Type 316 Forgings, Section III, Di-vision 1, Classes 1, 2, 3, and MC N-260-1 07-18-85 Weld Repair of SA-182 Type 12-05-85 316 Forgings, Section III, Di-vision 1, Classes 1, 2, 3, and MC Code Case N-260-1 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Type 308 L welding materials should not be used to repair grade F 316 N forgings because of the difference in strength levels.N-304 06-11-81 Use of 20Cr-25Ni-6Mo (Alloy 04-05-84 UNS N08366) Welded Tubes 07-12-84 for Section III, Division 1, Classes 2 and 3 Construction N-304-1 07-12-84 Use of 20Cr-25Ni-6Mo (Alloy 05-19-85 UNS N08366) Welded Tubes for Section III, Division°
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.
1, Classes 2 and 3 Construction N-304-2 05-19-85 Use of SB-676 20Cr-25Ni-
12-05-85 6Mo (Alloy UNS N08366)Welded Tubes, Section III, Division 1, Classes 2 and 3 N-304-3 12-05-85 Use of SB-676 20Cr-25Ni-
02-23-87 6Mo (Alloy UNS N08366)Plate, Sheet, Strip and Welded Pipes, Section III, Di-vision 1, Classes 2 and 3 N-309 09-17-8419 Identification of Materials 12-05-85 for Component Supports, Sec-tion III, Division 1 N-318 07-13-81 Procedure for Evaluation of 02-20-84 the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping, Section III, Division 1 Code Case N-318 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping 1 9 The Code Case was annulled on May 11, 1984 (ASME mandatory annulment date). It was reinstated on Septem-ber 17, 1984. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 5-11-84 through 9-17-84.N-214 05-15-78 07-13-81 09-07-82 Use of SA-351, Grade CN7M, for Valves for Sec-tion III, Division 1, Construction N-214-1 09-07-82 Use of SA-351 Grade CN7M, 05-25-83 for Valves, Section II, Divi-sion 1 1 8 The Code Case was annulled on January 14, 1980 (ASME mandatory annulment date). It was reinstated on March 17, 1980. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 1-14-80 through 3-17-80.1.84-16 system involved, and (3) the location in the sys-tem where the Case is to be applied.N-318-1 2 0 02-20-84 Procedure for Evaluation of 07-12-84 the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping, Section III, Division 1 Code Case N-318-1 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the- method of lug attachment, (2) the piping system involved, and (3) the location in the sys-tem where the Case is to be applied.N-318-2 07-12-84 Procedure for Evaluation of 09-05-85 the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping, Section III, Division 1 Code Case N-318-2 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys--tem where the Case is to be applied.N-318-3 09-05-85 Procedure for Evaluation of 07-27-88 the Design of Rectangular
12-11-89 Cross Section Attachments on Class 2 or 3 Piping, Section II, Division 1 Code Case N-318-3 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys-tem where the Case is to be applied.N-319 07-13-81 Alternate Procedure for Eval-07-13-84 uation of Stresses in Butt 07-13-87 Weld Elbows in Class 1 Pip-07-24-89 ing, Section III, Division 1 N-319-1 07-24-89 Alternate Procedure for 08-14-90 Evaluation of Stresses in Butt Weld Elbows in Class 1 Pip-ing, Section III, Division 1 N-345 06-17-82 Attachment of AMS 5382 Al-12-13-82 loy 31 Seat Rings by Friction Welding, Section III, Division 1, Classes 1, 2, and 3 2 0 The conditional acceptance was inadvertently omitted in Revision 23 of this guide.N-362 02-14-83 Alternate Rules for Pressure 05-25-83 Testing of Containment Items, Section III, Division 1 N-362-1 05-25-83 Pressure Testing of Contain-07-12-84 ment Items, Section III, Divi-sion 1, Classes 1, 2, and MC N-383 10-05-83 Weld Repair of SA-182 Aus-07-18-85 tenitic Forgings, Section III, Division 1, Classes 1, 2, and 3 Code Case N-383 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Applicants who apply the provisions Of this Case to permit mate-rial manufacturers to weld repair austenitic forg-ings without re-solution heat treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.N-391 11-28-83 07-30-86 07-24-89 N-392 11-28-83 07-30-86 07-30-89 12-11-89 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attach-ments on Class 1 Piping, Sec-tion III, Division 1 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attach-ments on Classes 2 and 3 Pip-ing, Section III, Division 1 N-411 09-17-84 Alternative Damping Values 02-20-86 for Seismic Analysis of Classes 1, 2, and 3 Piping Sections, Section III, Division 1 Code Case N-411 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: (1) The damp-ing values specified may be used in analyzing pip-ing response for seismic and other dynamic loads being filtered through building structures pro-vided response mode frequencies are limited to 33 Hz and below. Within this range, the Code Case damping should be used completely and consistently, if used at all. (For equipment other than piping, the damping values specified in Regulatory Guide 1.61, "Damping Values for Seismic Design of Nuclear Power Plants," should be used.) (2) The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been em-ployed. Such use should be limited only to re-sponse spectral analyses (similar to that used in the study supporting its acceptance-Reference NUREG/CR-3526).
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 sup-1.84-17 port optimization of existing designs, the effects of increased motion on existing clearances and on line mounted equipment should be checked.(4) This Code Case is not appropriate for analyz-ing 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 is not applica-ble to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.N-453 12-07-87 Nickel-Chromium-Molybde-
9/5/85
11-30-88 num-Copper Stainless Steel (UNS N08925) Welded Pipe for Class 2 and 3 Construc-tion, Section III, Divi-sion 1 4. Code Cases for Class 1 components that are not on the approved list of this guide (paragraph C. 1)or other regulatory guides, or for which authorization by the Commission has not been granted, are not acceptable for Class 1 components.


5. Code Cases for other classes of components that are not on the approved list of this guide (paragraph C. 1) or other regulatory guides should be considered not acceptable on a generic basis.
RG 1.84, Rev. 39, Page 33 CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
N-397 Alternative Rules to the Spectral Broadening Procedures of N-1226.3 for Classes 1, 2, and 3 Piping, Section III, Division 1 The Code Case is acceptable for specific plant applications on a case-by-case basis, pending revision of RG 1.122, Development of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components (Ref. 10).
2/20/87 N-398 Reporting of Charpy-V Notch Test Results, Section III, Division 1 The Code Case is not acceptable for steam generator or reactor coolant pump supports. Applicants wishing to use this Code Case should indicate in the safety analysis report the component supports to which the Code Case is applied for review on a case-by-case basis.
 
2/20/87 N-404 Annealed Alloy UNS N06625 Over UNS N06600 Bimetallic Tubing, Section III, Division 1, Class 1 The outside layer of the bimetallic tubing should be limited to a minimum of
5 percent and to a maximum of 40 percent of the wall thickness. The tolerance on the outside layer of material should not exceed -0.000 to +0.007 inch of the specified design wall thickness.
 
12/11/95 N-411-1 Alternative Damping Values for Response Spectra Analysis of Class 1, 2, and 3 Piping, Section III, Division 1
(1)
The Code Case damping should be used completely and consistently, if it is used at all. (For equipment other than piping, the damping values specified in RG 1.61, Damping Values for Seismic Design of Nuclear Power Plants (Ref. 11), should be used.)
(2)
The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been employed. Such use is to be limited only to response spectral analyses [similar to that used in the study supporting its acceptance, NUREG/CR-3526, Impact of Changes in Damping and Spectrum Peak Broadening on the Seismic Response of Piping Systems (Ref. 12)]. The acceptance of the use with other types of dynamic analyses (e.g., time-history analyses or independent support motion method) is pending further justification.
 
(3)
When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and online mounted equipment should be checked.
 
(4)
This Code Case is not appropriate for analyzing the dynamic response of piping systems using supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420). 
(5)      This Code Case does not apply to piping in which stress corrosion-cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.
 
5/5/00
N-430
Alternative Requirements for Welding Workmanship and Visual Acceptance Criteria for Class 1, 2, 3 and MC Linear-Type and Standard Supports, Section III, Division 1
(1)
The applicant should demonstrate that the applicable supports are not subject to cyclic loading in excess of 20,000 cycles.
 
(2)
The first sentence of 3.0(f)(1) should be replaced with the following: For material 3/8 in. and less nominal thickness, undercut depth of 1/32 in. on one side of the member for the full length of the weld, or 1/32 i
 
====n. on one ====
7/1/93
 
RG 1.84, Rev. 39, Page 34 CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
side for one-half the length of the weld, and 1/16 in. for one-fourth of the length of the weld on the face of a rectangular tube or one-fourth the length of the weld on the same side of the member is acceptable.
 
N-595-4 Requirements for Spent Fuel Storage Canisters, Section III, Division 1 The canisters must be made from austenitic stainless steel Type 304 or 316.
 
10/14/11 N-656 Rules for the Construction of Inner Transportation Containments, Section III,
Division 3 The inner transportation containment must contain only solid and dry material.
 
5/11/10
1361-2 Socket Welds, Section III
Code Case 1361-2 was acceptable when used in connection with Section III,
Paragraph NB-3356, Fillet Welds.
 
3/1/79
1412-4 Modified High Yield Strength Steel for Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case. The material given in the Inquiry section of the Code Case should be SA-508, Class 4b, instead of SA-508, Class 4.
 
1/1/77
1423-2 Wrought Type 304 and 316 with Nitrogen Added, Sections I, III, VIII, Divisions 1 and 2 Code Case 1423-2 was acceptable subject to compliance with the recommendations in RG 1.31, Control of Ferrite Content in Stainless Steel Weld Metal (Ref. 13), and RG 1.44, Control of the Use of Sensitized Stainless Steel (Ref. 14).
7/1/77
1521-1 Use of H-Grades of SA-240, SA-479, SA-336, and SA-358, Section III
Code Case 1521-1 was acceptable subject to compliance with the recommendations contained in RG 1.31 (Ref. 13) and RG 1.44 (Ref. 14).
1/1/78
1528-3 High Strength Steel SA-508, Class 2 and SA-541, Class 2 Forgings, Section III,
Class 1 Components Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.
 
1/1/78
1569 Design of Piping for Pressure Relief Valve Station, Section III
Code Case 1569 was acceptable subject to compliance with the recommendations in RG 1.67, Installation of Over-Pressure Protection Devices (Ref. 15).
7/1/79
1606-1 Stress Criteria Section III, Classes 2 and 3 Piping Subject to Upset, Emergency, and Faulted Operating Conditions Code Case 1606-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
 
7/1/77
1607-1 Stress Criteria for Section III, Classes 2 and 3 Vessels Designed to NC/NC-3300
Excluding the NC-3200 Alternate Code Case 1607-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code
7/1/77
 
RG 1.84, Rev. 39, Page 35 CODE
CASE
NUMBER
TABLE 4 ANNULLED CONDITIONALLY ACCEPTABLE SECTION III
CODE CASES
TITLE/CONDITION
ANNULMENT
DATE
Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
 
1635-1 Stress Criteria for Section III, Class 2 and 3 Valves Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1635-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class
2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
 
7/1/77
1636-1 Stress Criteria for Section III, Class 2 and 3 Pumps Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1636-1 was acceptable subject to the interpretation that the stress limit designations of Upset, Emergency, and Faulted do not necessarily imply agreement with specified plant conditions that apply to ASME Code Class 2 and 3 components for fluid systems. The design specifications should establish and justify these designations.
 
7/1/77
1689-1 Alternate PWHT Time and Temperature for SA-182 Grade F-22, SA-387 Grade 22, Class 2, and SA-335 Grade P-22 Section III, Class 1, 2, 3 and CS
The alternate postweld heat treatment (PWHT) should be prequalified along with the applicable welding procedure in accordance with Section IX.
 
1/1/78
1783-1 Qualification of Nondestructive Examination Personnel, Section III, Division 1 The first sentence of Paragraph 1 of the Code Case should be replaced with the following: The certification of the Level III nondestructive examination personnel for the purpose of this Section of the Code will be the responsibility of the employer of the Level III individual. If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder.
 
1/1/79
 
RG 1.84, Rev. 39, Page 36
5. Code Cases Superseded by Revised Code Cases
 
The Code Cases listed in Table 5 were approved in prior versions of this guide and have since been superseded by revised Code Cases (on or after July 1, 1974). The date in Column 3 indicates the date on which the ASME approved the revision to the Code Case. Note that the NRC unconditionally approved the Code Cases listed without conditions. The versions of the Code Cases listed in Table 5 cannot be applied by the licensee or applicant for the first time after the effective date of this RG. To assist users, changes to superseded Code Cases are shaded in grey to distinguish them from those listed in previous versions of this guide. (Note: The NRC did not approve some of these Code Cases in previous versions of this guide.)
 
Table 5.  Section III Code Cases That Have Been Superseded by Revised Code Cases on or after July 1, 1974
 
CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
N-4-11
(1337-11)
N-4-12 Special Type 403 Modified Forgings or Bars, Section III, Division 1, Class 1 and CS
1/12/05
 
2/12/08 N-5
(1344-5)
Nickel-Chromium, Age-Hardenable Alloys (Alloy X750), Section III
12/13/82 N-7
(1358-5)
High Yield Strength Steel, Section III, Division 1, Class 1 Vessels Each referencing safety analysis report should provide the information required by Note 1 in the Code Case.
 
12/13/82 N-20
(1484-3)
N-20-1 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at Nickel-Iron-Chromium Alloy 800 at a Specified Minimum Yield Strength of
40.0 ksi, Section III, Division 1, Class 1
9/5/85
 
12/7/87 N-20-2 N-20-3 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at Nickel-Iron-Chromium Alloy 800 at a Specified Minimum Yield Strength of
40.0-ksi and Cold Worked Alloy 800 at a yield strength of 47.0-ksi, Section III,
Division 1, Class 1
11/30/88
2/26/99 N-31
(1540-2)
Elastomer Diaphragm Valves, Section III, Class 2 and 3 Each applicant who applies the Code Case should indicate in the referencing safety analysis report that the service life of the elastomer diaphragm should not exceed the manufacturers recommended service life. This recommended service life should not exceed one-third of the minimum cycle life as established by the requirements of Paragraph 3 of the Code Case. In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.
 
7/18/85 N-55
(1609-1)
Inertia and Continuous Drive Friction Welding, Section I, III, IV, VIII,
Division 1 and 2, and IX
4/5/84 N-60
(1618-2)
N-60-1 Material for Core Support Structures, Section III, Division 1, Subsection NG
Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition.
 
5/25/83
 
9/17/84 N-60-2 N-60-3 N-60-4 Material for Core Support Structures, Section III, Division 1, Subsection NG
9/5/85
5/13/91
2/15/94 Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition. For SA-479 material, the maximum yield strength should not exceed 90,000 pounds
 
RG 1.84, Rev. 39, Page 37 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
per square inch (psi) because of the susceptibility of this material to environmental cracking.
 
N-60-5 Material for Core Support Structures, Section III, Division 1, Class 1 The maximum yield strength of strain-hardened austenitic stainless steel shall not exceed 90,000 psi because of the susceptibility of this material to environmental cracking.
 
2/20/04 N-62-2
(1621-2)
N-62-3 N-62-4 N-62-5 N-62-6 Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 Line Valves The Code Case requires Class 1 and Class 2 valve manufacturers to meet the provisions of Section III, Article NCA-4000, and Class 3 valve manufacturers should also meet the provisions of Article NCA-4000.
 
7/18/85
 
9/5/85
7/24/89
12/11/89
5/11/94 N-71-7
(1644-7)
N-71-8
(1644-8)
Additional Materials for Component Supports, Section III, Division 1, Subsection NF, Class 1, 2, 3 and MC Component Supports The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that (1) the impact test results for the material meet the Code requirements and (2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
5/15/78
 
1/7/80
N-71-9
(1644-9)
Additional Materials for Component Supports Fabricated by Welding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports In the last sentence of Paragraph 5.3 of the Code Case, reference should be made to Paragraph 4.5.2.2, Alternate Atmosphere Exposure Time Periods Established by Test, of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.
 
5/11/81 N-71-10
N-71-11 Additional Materials for Component Supports Fabricated by Welding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that
(1) the impact test results for the material meet Code requirements and
(2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
The last sentence of Paragraph 5.3 of the Code Case should reference Paragraph
4.5.2.2 of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.
 
6/17/82
2/14/83
 
RG 1.84, Rev. 39, Page 38 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
N-71-12 Additional Materials for Component Supports Fabricated by Welding, Section III, Division 1, Class 1, 2, 3 and MC
The maximum measured UTS of the component support material should not exceed 170 ksi in view of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking. Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material; under this condition, the design specification should specify impact testing for the material. For these cases, the applicant should demonstrate that (1) the impact test results for the material meet Code requirements and
(2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.
 
The last sentence of Paragraph 5.3 of the Code Case should reference Paragraph
4.5.2.2 of the AWS D.1.1 Code for the evidence presented to and accepted by the authorized inspector concerning exposure of electrodes for longer periods of time.
 
Paragraph 16.2.2 is not acceptable as written and should be replaced with the following: When not exempted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710
Grade A material, it should be at least 1000°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
 
RG 1.84, Rev. 39, Page 39 CODE CASE
NUMBER
TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED 
BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION
DATE
and must not exceed 1150°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
 
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==
==D. IMPLEMENTATION==
The purpose of this section is to provide information to applicants regarding the use of this regulatory guide.1. Except for those Code Cases that have been annulled by action of the ASME, the NRC staff has found the Code Cases listed in this regulatory guide under regulatory position C.1 acceptable for appropriate use. Other Code Cases may be considered for use in accordance with footnote 6 of the Codes and Standards rule, §50.55a of 10 CFR Part 50.2. Components ordered to a specific version of a Code Case need not be changed because a subsequent revision to the Code Case is listed as the approved version in this guide.3. Components ordered to a Code Case that was previously approved for use need not be changed because the Code Case has been subsequently annulled.4. Code Cases on the approved list may be applied to components that were in process of construction prior to the effective date of the Cbde Case within the limits specified in the Code Case and applicable regulations or recommended in other regulatory guides.1.84-18 APPENDIX NUMERICAL  
The purpose of this section is to provide information to applicants and licensees regarding the NRC
LISTING OF CODE CASES N-31-1 N-284 N-395 N-62-6 N-292 N-410 N-106-2 (1720-2) N-304-4 N-4 11-1 N-119-6 N-309-1 N-414 N-133-3 N-313 N-420 N-154-1 N-315 N-430 N-155-2 (1792-2) N-316 N-4 33 N-160-1 N-318-4 N-442 N-192-2 N-345-1 N-196-1 N-368 N-452 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 Federal Recycling Program 1.84-19 f UNITED STATES NUCLEAR REGULATORY
staffs plans for using this regulatory guide. This regulatory guide lists the ASME BPV Code, Section III
COMMISSION
Code Cases that the NRC has approved for use as voluntary alternatives to the mandatory ASME BPV
WASHINGTON, D.C. 20555-0001 FIRST CLASS MAIL POSTAGE AND FEES PAID USNRC PERMIT NO. G-67 OFFICIAL BUSINESS PENALTY FOR PRIVATE USE, $300 120555 O03954' 1 iSP 1iýUS NPC-OTPP 5T\' OF INFO SUIP SVCS B PANVCH CIII F L1PPARY HP 160, WASHINGTON
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.
Pr C 05}}
 
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}}


{{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

RG 1.84, Rev. 39, Page 38 CODE CASE

NUMBER

TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED

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

DATE

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

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

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

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

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

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

Grade A material, it should be at least 1000°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

RG 1.84, Rev. 39, Page 39 CODE CASE

NUMBER

TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED

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

DATE

and must not exceed 1150°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

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

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


Retrieved from "https://kanterella.com/w/index.php?title=Regulatory_Guide_1.84&oldid=5459336"