Regulatory Guide 1.84: Difference between revisions

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{{Adams
{{Adams
| number = ML101800532
| number = ML003740283
| issue date = 07/31/2010
| issue date = 05/31/1999
| title = 5, Design, Fabrication, and Materials Code Case Acceptability, ASME Section III
| title = 1, (Draft Was Issued as DG-1048), Design and Fabrication Code Case Acceptability, ASME Section III, Division 1
| author name = Norris W
| author name =  
| author affiliation = NRC/RES/DE/CIB
| author affiliation = NRC/RES
| addressee name =  
| addressee name =  
| addressee affiliation =  
| addressee affiliation =  
| docket =  
| docket =  
| license number =  
| license number =  
| contact person = Norris, Wallace, RES/DE/CIB, 251-7650
| contact person =  
| case reference number = DG-1191
| document report number = RG-1.84, Rev 31
| document report number = RG-1.084, Rev. 35
| document type = Regulatory Guide
| document type = Regulatory Guide
| page count = 55
| page count = 20
}}
}}
{{#Wiki_filter:The NRC issues regulatory guides to describe and make available to the public methods that the NRC staff considers acceptable for use in implementing specific parts of the agency=s regulations, techniques that the staff uses in evaluating specific problems or postulated accidents, and data that the staff needs in reviewing applications for permits and licenses.  Regulatory guides are not substitutes for regulations, and compliance with them is not required.  Methods and solutions that differ from those set forth in regulatory guides will be deemed acceptable if they provide a basis for the findings required for the issuance or continuance of a permit or license by the Commission.
{{#Wiki_filter:


This guide was issued after consideration of comments received from the public.
==A. INTRODUCTION==
Section 50.55a, "Codes and Standards," of 10 CFR
Part 50, "Domestic Licensing of Production and Uti lization Facilities," requires, in part, that components of the reactor coolant pressure boundary be designed, fabricated, erected, and tested in accordance with the requirements for Class 1 components of Section III,
"Nuclear Power Plant Components,"' of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code or equivalent quality standards.


Regulatory guides are issued in 10 broad divisionsC1, Power Reactors; 2, Research and Test Reactors; 3, Fuels and Materials Facilities; 4, Environmental and Siting; 5, Materials and Plant Protection; 6, Products; 7, Transportation; 8, Occupational Health;
Footnote 6 to 10 CFR 50.55a states that the use of spe S>cific Code Cases may be authorized by the Commission upon request pursuant to 10 CFR 50.55a(a)(3), which requires that proposed alternatives to the described re quirements or portions thereof provide an acceptable level of quality and safety.
9, Antitrust and Financial Review; and 10, General.


Electronic copies of this guide and other recently issued guides are available through the NRC=s public Web site under the Regulatory Guides document collection of the NRC=s Electronic Reading Room at http://www.nrc.gov/reading-rm/doc-collections/ and through the NRC=s Agencywide Documents Access and Management System (ADAMS) at http://www.nrc.gov/reading-rm/adams.html, under Accession No. ML101800532.
General Design Criterion 1, "Quality Standards and Records," of Appendix A, "General Design Crite ria for Nuclear Power Plants," to 10 CFR Part 50 re quires, in part, that structures, systems, and compo nents important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be per
1Copies may be obtained from the American Society of Mechanical Engi neers, Three Park Avenue, New York, New York 10016-599


U.S. NUCLEAR REGULATORY COMMISSION            October 2010
===0. Phone ===
                                                                                            Revision 35 REGULATORY GUIDE
(212)591-8500; fax (212)591-8501.
OFFICE OF NUCLEAR REGULATORY RESEARCH


REGULATORY GUIDE 1.84 (Draft was issued as DG-1191, dated June 2009)
Revision 31 May 1999 JIDE
formed. Where generally recognized codes and stan dards are used, Criterion 1 requires that they be identi fied 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.


DESIGN, FABRICATION, AND MATERIALS CODE CASE
Criterion 30, "Quality of Reactor Coolant Pressure 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.
ACCEPTABILITY, ASME SECTION III


==A. INTRODUCTION==
Appendix B, "Quality Assurance Criteria for Nu clear Power Plants and Fuel Reprocessing Plants," to  
General Design Criterion (GDC) 1, AQuality Standards and Records,@ of Appendix A, AGeneral Design Criteria for Nuclear Power Plants,@ to Title 10, Part 50, of the Code of Federal Regulations
10 CFR Part 50 requires, in part, that measures be es tablished for the control of special processing of materi als and that proper testing be performed.
(10 CFR Part 50), ADomestic Licensing of Production and Utilization Facilities@ (Ref. 1), 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, Criterion 1 requires that they be identified and evaluated to determine their applicability, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keeping with the required safety function.


Criterion 30, AQuality of Reactor Coolant Pressure Boundary,@ of Appendix A to 10 CFR Part 50
This regulatory guide lists those Section III ASME
requires, in part, that components that are part of the reactor coolant pressure boundary be designed, fabricated, erected, and tested to the highest practical quality standards.
Code Cases oriented to design and fabrication that are generally acceptable to the NRC staff for implementa tion in the licensing of light-water-cooled nuclear power plants. The guide is being revised to update the NRC's position on new Code Cases, revised Code Cases, and annulled Code Cases since Revision 30 of the guide was issued in October 1994.


Appendix B, AQuality Assurance Criteria for Nuclear Power Plants and Fuel Processing Plants,@
This regulatory guide contains no information collection activities and, therefore, is not subject to the USNRC REGULATORY GUIDES
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.
The guides are issued in the following ten broad divisions:
Regulatory Guides are issued to describe and make available to the public such informa tion as methods acceptable to the NRC staff for implementing specific parts of the Corn-


Provisions of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code have been used since 1971 as one part of the framework to establish the necessary design, fabrication, construction, testing, and performance requirements for structures, systems, and components important to safety. Among other things, ASME standards committees develop improved methods for the construction and inservice inspection (ISI) of ASME Class 1, 2, 3, MC (metal containment), and CC
===1. Power Reactors ===
6. Products mission'sregulations, techniquesusedbythestaffinevaluatingspecificproblemsorpos.


Rev. 35 of RG 1.84, Page 2 (concrete containment) nuclear power plant components. A broad spectrum of stakeholders participates in the ASME process, which helps to ensure that the various interests are considered.
2. Research and Test Reactors
7. Transportation tulated accidents, and data needed by the NRC staff in its review of applications for per-
3. Fuels and Materials Facilities
8. Occupational Health mits and licenses. Regulatory guidesare notsubstitutesforregulations, and compliance
4. Environmental and Siting
9. Antitrust and Financial Review withthemisnotrequired. Methodsand solutionsdifferentfromthosesetoutintheguides
5. Materials and Plant Protection
10.


The regulation in 10 CFR 50.55a(c), AReactor Coolant Pressure Boundary,@ requires, in part, that components of the reactor coolant pressure boundary must be designed, fabricated, erected, and tested in accordance with the requirements for Class 1 components of Section III, ARules for Construction of Nuclear Power Plant Components,@ of the ASME BPV Code (Ref. 2) or equivalent quality standards.
General will be acceptable if they provide a basis for the findings requisite to the issuance or con tinuance of a permit or license by the Commission.


The ASME publishes a new edition of the BPV Code, which includes Section III, every 3 years, and new addenda every year.  The latest editions and addenda of Section III that the U.S. Nuclear Regulatory Commission (NRC) has approved for use are referenced in 10 CFR 50.55a(b).  The ASME also publishes Code Cases quarterly.  Code Cases provide alternatives developed and approved by ASME.  This regulatory guide identifies the Code Cases that have been determined by the NRC to be acceptable alternatives to applicable parts of Section III.  Section III Code Cases not yet endorsed by the NRC may be used by a licensee or applicant through 10 CFR 50.55a(a)(3). That section 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 that their use is authorized by the Director of the Office of Nuclear Reactor Regulation.
Single copies of regulatory guides may be obtained freeofcharge by writing to the Repro This guide was issued after consideration of comments received from the public. Coin- duction and Distribution Services Section, Office of the Chief Information Officer, U.S. Nu ments and suggestions for improvementsinthese guidesare encouraged at all times, and clear Regulatory Commission, Washington, DC 20555-0001; or by fax to (301)415-2289;
guides will be revised, as appropriate, to accommodate comments and to reflect new in- or by email to DISTRIBUTION@NRC.GOV.


The ASME Code is incorporated by reference into 10 CFR 50.55a.  Code Cases approved by the NRC provide an acceptable voluntary alternative to the mandatory ASME Code provisions.  Therefore, the NRC will amend 10 CFR 50.55a to incorporate by reference the new Code Cases and revisions to existing Code Cases listed in this guide, and to state the requirements governing the use of Code Cases.
formation or experience.


Because of continuing change in the status of Code Cases, the staff plans periodic updates to 10 CFR
Issued guides may also be purchased from the National Technical Information Service on Written comments may be submitted to the Rules and Directives Branch, ADM, U.S. Nu- a standing order basis. Details on this service may be obtained by writing NTIS, 5285 Port clear Regulatory Commission, Washington, DC 20555-CO01.
50.55a and this guide to accommodate new Code Cases and any revisions of existing Code Cases.


This regulatory guide does not contain any new or amended information collection requirement subject to the Paperwork Reduction Act of 1995 (Ref. 3).  This regulatory guide does, however, contain existing information collections that are covered by the requirements of 10 CFR Part 50, which the Office of Management and Budget (OMB) approved under OMB control number 3150-0011.  The NRC may neither conduct nor sponsor, and a person is not required to respond to, an information collection request or requirement unless the requesting document displays a currently valid OMB control number.
Royal Road, Springfield, VA 22161.


==B. DISCUSSION==
U.S. NUCLEAR REGULATORY COMMISSION
Regulatory Guide 1.84 lists all Section III Code Cases that the NRC has approved for use.  For Revision 35 of the guide, the NRC reviewed the Section III Code Cases listed in Supplements 2B11 to the
REGULATORY GL
2004 Edition of the ASME BPV Code and Supplement 0 to the 2007 Edition (Supplement 0 also serves as Supplement 12 to the 2004 Edition).1  Appendix A to this guide lists the supplements reviewed, the applicable edition, and the date on which each supplement was approved by the ASME Board on Nuclear Codes and Standards.  Appendix B is a list of the Section III Code Cases addressed in the eleven supplements.  Finally, Appendix C is a current list of all Section III Code Cases.  The Code Cases addressed by this regulatory guide are listed in five tables:
OFFICE OF NUCLEAR REGULATORY RESEARCH
REGULATORY GUIDE 1.84 (Draft was issued as DG-1048)  
DESIGN AND FABRICATION CODE CASE ACCEPTABILITY,  
ASME SECTION III, DIVISION 1


(1)  
requirements of the Paperwork Reduction Act of 1980
Table 1, AAcceptable Section III Code Cases,@ contains the Code Cases that are acceptable to the NRC for application in the design and construction of light-water-cooled nuclear power plants.
(44 U.S.C. 3501 et seq.).


1 Except for Code Cases pertaining to high-temperature gas-cooled reactors; certain requirements in Section III, Division
==B. DISCUSSION==
2, not endorsed by the NRC; liquid metal; and submerged spent fuel waste casks.
The ASME Boiler and Pressure Vessel Committee publishes a document entitled "Code Cases."1 Gener ally, the individual Code Cases that make up this docu ment explain the intent of Code rules or provide for al ternative requirements under special circumstances.
 
Rev. 35 of RG 1.84, Page 3
(2)
Table 2, AConditionally Acceptable Section III Code Cases,@ contains Code Cases that are acceptable provided that they are used with the identified limitations or modifications (i.e., the Code Case is generally acceptable but the NRC has determined that the alternative requirements must be supplemented in order to provide an acceptable level of quality and safety).
 
(3)
Table 3, AAnnulled Unconditionally Approved Section III Code Cases,@ contains the Code Cases that have been annulled by the ASME.
 
(4)
Table 4, AAnnulled Conditionally Acceptable Section III Code Cases,@ contains the Code Cases that the NRC determined to be acceptable, provided that they were used with the identified limitations or modifications, but were subsequently annulled by the ASME.


(5)
Most Code Cases are eventually superseded by re vision 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 un der 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 ap proved 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.
Table 5, ASection 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.


Code Cases that the NRC determined to be unacceptable are listed in Regulatory Guide 1.193, AASME Code Cases Not Approved for Use@ (Ref. 4).  
The Code Cases listed in this guide are limited to those cases applicable to Section III that are oriented to ward design and fabrication.


Code Cases provide alternatives to existing Code requirements that the ASME developed and approved. The new Code Cases and revisions to existing Code Cases listed as approved in Tables 1 and 2 of this guide are incorporated by reference into 10 CFR 50.55a.  Code Cases approved by the NRC may be used voluntarily by licensees as an alternative to compliance with ASME Code provisions that have been incorporated by reference into 10 CFR 50.55a.
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 May 12, 1994, were reviewed for inclusion in this guide. In addition to the listing of ac ceptable Code Cases, this revision of the guide includes listings of (1) Code Cases that were identified as ac ceptable 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 identi fied 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 en dorsed or will require supplementary provisions on an individual basis to attain endorsement status.


Requirements related to Code Case implementation are provided in 10 CFR 50.55a(b). When a licensee initially applies a Code Case listed in Tables 1 or 2, the licensee must implement the most recent version of that Code Case incorporated by reference in 10 CFR 50.55a.
The endorsement of a Code Case by this guide constitutes acceptance of its technical position for ap plications not precluded by regulatory or other require ments or by the recommendations in this or other regu latory guides. Contingent endorsement is indicated in Regulatory Position 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
*Lines indicate substantive changes from Revision 30.


Code Cases may be annulled because the 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 adequate.  After the ASME annuls a Code Case and the NRC amends 10 CFR 50.55a and this guide, licensees may not implement that Code Case for the first time.  However, a licensee who implemented the Code Case prior to annulment may continue to use that Code Case until the licensee voluntarily updates its Section III Code of record.  If a Code Case is incorporated by reference into 10 CFR 50.55a and later annulled by the ASME because experience has shown that the design analysis or construction method is no longer adequate, the NRC will amend 10
no conflicts with other recommended limitations re sulting from Code Case usage.
CFR 50.55a and this guide to remove the approval of the annulled Code Case.  Licensees should not begin to implement such annulled Code Cases in advance of the rulemaking.  Notwithstanding these requirements, the Commission may impose new or revised Code requirements, including implementation schedules, that it determines are consistent with the Backfit Rule (10 CFR 50.109).  


With regard to the use of any Code Case, it is the responsibility of the user to make certain that the provisions of the Code Case do not conflict with licensee commitments or regulatory requirements.
Acceptance or endorsement by the NRC staff ap plies only to those Code Cases or Code Case revisions with the date of ASME approval as shown in the Regu latory 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 deter mine whether 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 pe riodic updating to accommodate new Code Cases and any revisions of existing Code Cases.
 
Rev. 35 of RG 1.84, Page 4


==C. REGULATORY POSITION==
==C. REGULATORY POSITION==
1.
1. ACCEPTABLE CODE CASES
The Section III ASME Code Cases 2 listed below (by number, date of ASME approval, and title) are ac ceptable to the NRC staff for application in the construction of components for light-water-cooled nu clear power plants. Their use is acceptable within the li mitations 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 with in the additional limitations recommended by the NRC
staff given with the individual Code Case in the listing.


Acceptable Code Cases  
The categorization of Code Cases used in this guide is intended to facilitate the Code Case listing and is not in tended to indicate a limitation on its usage.


The Code Cases listed in Table 1 below are acceptable to the NRC for application in the design and construction of components and their supports for water-cooled nuclear power plant
a. Design-Oriented Code Cases (Code Case Number, Date of ASME Approval, 3 and Title):
(1) Code Cases Applicable to Piping Design:
N-122-2 04-28-94 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class
1 Piping, Section III, Divi sion 1 N-160-1
07-18-85 Finned Tubing for Construc
07-18-88 tion, Section III, Division 1
03-14-91
03-14-94 N-453-2 04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925 and N08926)
Seamless and Welded Pipe for Class 2 and 3 Construction, Section III, Division 1
2A numerical listing of the Code Cases appears in the appendix.


====s. The ASME ====
3When 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.
issues a new edition of Section III every 3 years.  Code Cases are published quarterly in supplements to each edition.  Hence, there are 12 supplements to each edition.


Table 1. Acceptable Section III Code Cases
1.84-2


Code Case Number Table 1 Acceptable Section III Code Cases Date N-4-12 Special Type 403 Modified Forgings or Bars, Section III, Division 1, Class 1 and CS
N-454-1 04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925 and N08926)
10/18/04 N-60-5 Material for Core Support Structures, Section III, Division 1
Wrought Fittings for Class 2 and 3 Construction Section III,  
2/20/04 N-122-2 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 1 Piping, Section III, Division 1  
Division 1 N-455-1  
2/03/03 N-131-1    
04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925 and N08926)  
(1759-1)  
Forged Flanges and Fittings for Class 2 and 3 Construction, Section III, Division 1  
Material for Internal Pressure Retaining Items for Pressure Relief Valves, Section III, Division 1, Class 1, 2, and 3
(2) Code Cases Applicable to Valve Design:
2/03/03 N-133-3 Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 3  
N-133-3 07-18-85 Use of SB-148 Alloys 952 and  
2/03/03 N-154-1 Projection Resistance Welding of Valve Seats, Section III, Division 1, Classes 1, 2, and 3
07-18-88
2/03/03 N-160-1 Finned Tubing for Construction, Section III, Division 1  
954, Section III, Division 1,  
2/03/03 N-171 Postweld Heat Treatment of P-No. 1 Material, Section III, Division 2  
03-14-91 Class 3  
4/30/93 N-192-3 Use of Braided Flexible Connectors, Section III, Division 1, Class 2 and 3  
03-14-94 N-313
7/23/02 N-205 Use of Ductile Iron SA-395, Section III, Division 1, Class 3
05-11-81
2/25/02 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
11-28-83
2/14/03 N-213 Welded Radial Shear Bar Assemblies, Section III, Division 2
11-28-86
2/25/02 N-243 Boundaries Within Castings Used for Core Support Structures, Section III,
11-28-89
Division 1, Class CS
11-28-92 N-394
2/03/03 N-284-2 Metal Containment Shell Buckling Design Methods, Class MC, Section III,  
02-20-84
Division 1  
07-30-86
1/10/07 N-315 Repair of Bellows, Section III, Division 1  
07-30-89
2/03/03
07-27-92 N-410
12-05-84
07-27-88
03-14-91
03-14-94 Alternate Rules for Half Coupling Branch Connections, Section III, Division 1 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 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 Ili, Di vision 1, Classes 2 and 3 N-309-1  
12-05-85 Identification of Materials for  
07-27-88 Component Supports, Section  
03-14-91 III, Division 1 N-411-1
02-20-86
02-20-89
04-30-92 Alternative Damping Values 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 fol lowing conditions in addition to those conditions speci fied 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 val ues specified in Regulatory Guide 1.61, "Damping Val ues 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 employed. Such use should be limited only to response spectral analyses (similar to that used in the study supporting its accep tance-Reference NUREG/CR-3526). (3) When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on ex isting clearances and on line mounted equipment should be checked. (4) This Code Case is not appropri-. 
ate for analyzing the dynamic response of piping sys tems 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 applicable to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is made and is re viewed by the NRC staff.


Rev. 35 of RG 1.84, Page 5 Code Case Number Table 1 Acceptable Section III Code Cases Date N-318-5 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping, Section III, Division 1
N-420
2/03/03 N-319-3 Alternate Procedure for Evaluation of Stresses in Butt Welding Elbows in Class 1 Piping, Section III, Division 1
02-14-85
2/03/03 N-329 Examination of Bar Material, Section III, Division 1, Class 1
02-14-88
7/23/02 N-351 Use of Subsize Charpy V-Notch Specimens, Section III, Division 1
03-14-91
1/17/00
03-14-94 N-433
N-369 Resistance Welding of Bellows, Section III, Division 1
12-16-86
5/09/03 N-373-3 Alternative PWHT Time at Temperature for P-No. 5A or P-No. 5B Group 1 Material, Classes 1, 2, and 3
12-16-89
10/08/04 N-391-2 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attachments on Class 1 Piping, Section III, Division 1
12-16-92
5/04/04 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
(3) Other Code Cases Related to Design:
5/04/04 N-405-1 Socket Welds, Section III, Division 1
N-122-2
2/20/04 N-438-1 UNS N08367, Section III, Division 1, Class 2 and 3 Construction
04-28-94 N-243
5/24/96 N-452 Specialized Subcontracted Welding Process (Electron Beam Welding),     
08-30-79
Section III, Division 1
07-16-82
5/09/03 N-453-3 Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) for Class 2 and 3 Construction, Section III, Division 1
05-19-85
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, 
05-19-88
Division 1
03-14-91
6/17/03 N-455-1 Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNS N08925 and N08926) Forged Flanges and Fittings for Class 2 and 3, Section III,     
03-14-94 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class  
Division 1
1 Piping, Section III, Divi sion 1 Boundaries Within Castings Used for Core Support Struc tures, Section III, Division 1, Class CS
6/17/03 N-469-1 Martensitic Stainless Steel for Class 1, 2, and 3 Components, Section III,  
Linear Energy Absorbing Sup ports for Subsection NF,
Division 1  
Classes 1, 2, and 3 Construc tion, Section III, Division 1 Non-Threaded Fasteners for Section III, Division 1, Class 1, 2, and 3 Component and Piping Supports, Section III, Division 1 N-476
2/03/03 N-493 Alternative Radiographic Acceptance Criteria for Vessels Used as Shipping Casks, Section III, Division 1, Class 1
05-06-89 Class 1, 2, 3, and MC Linear
7/23/02 N-500-2 Alternative Rules for Standard Supports for Classes 1, 2, 3 and MC,       
07-27-92 Component Supports-Design Criteria for Single Angle Mem bers, Section III, Division 1, Subsection NF
Section III, Division 1
N-505
2/20/04
07-27-92 Alternative Rules for the Ex amination of Butt Welds Used as Closure Welds for Electrical Penetration Assemblies in Con tainment Structures, Section III, Division 1
 
1.84-3
Rev. 35 of RG 1.84, Page 6 Code Case Number Table 1 Acceptable Section III Code Cases Date 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
5/04/04 N-511 Design Temperature for Atmospheric and 0-15 psi Storage Tanks, Section III,
Division 1
5/04/04 N-520-1 Alternative Rules for Renewal of N-type Certificates for Plants Not in Active Construction, Section III, Division 1  
5/09/03 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 UNS N08367 in Class 2 and 3 Valves, Section III, Division 1  
2/20/04 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
9/07/01 N-558 Stamping of Class 2 Vessels Fabricated to Subsection NB, Section III,   
Division 1
2/25/02 N-564-2 UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction, Section III,
Division 1
2/03/03 N-579 Use of Nonstandard Nuts, Class 1, 2, and 3, MC, CS Components and Supports Construction, Section III, Division 1
2/03/03 N-580-1 Use of Alloy 600 With Columbium Added, Section III, Division 1
5/20/98 N-594 Repairs to P-4 and P-5A Materials for Pumps and Valves Without Postweld Heat Treatment, Section III, Division 1  
3/28/01 N-607 Guidance on Implementation of NS Certificate of Accreditation, Section III, 
Division 1
5/04/04 N-610
Alternative Reference Stress Intensity Factor (K1R) Curve for Class Components, Section III, Division 1
5/04/04 N-611 Use of Stress Limits as an Alternate to Pressure Limits Subsection NC/ND-3500, Section III, Division 1
2/20/04 N-620
Rules for Class 1 Type M Pumps, Section III, Division 1  
5/04/04 N-621-1 Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800EF, Section III,
Division 1
10/08/04 N-625-1 Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800EF, Section III,
Division 1
2/20/04


Rev. 35 of RG 1.84, Page 7 Code Case Number Table 1 Acceptable Section III Code Cases Date 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 N-632 Use of ASTM A 572, Grades 50 and 65 for Structural Attachments to Class CC
.1 N-511
Containment Liners, Section III, Division 2
02-12-93 Design Temperature for Atmo spheric and 0-15 PSI Storage Tanks, Section III, Division 1 N-520
2/03/03 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 2 and 3, Section III, Division 1
12-09-93 Alternative Rules for Renewal of N-type Certificates for Plants Not in Active Construc tion, Section III, Division 1 b. Fabrication-oriented Code Cases
2/14/03 N-636 Use of 18Cr-13Ni-3Mo (Alloy UNS S31703), 19Cr-15Ni-4Mo (Alloy UNS
(1) Code Cases Related to Welding and Brazing:
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
N-154-1
7/23/02 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
12-05-85
9/24/99 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
12-05-88
2/03/03 N-644-1 Weld Procedure Qualification for Procedures Exempt From PWHT in Classes 1, 2, and 3 Construction, Section III, Division 1
02-05-92 N-304-4 02-23-87
3/28/01 N-646 Alternative Stress Intensification Factors for Circumferential Fillet Welded or Socket Welded Joints for Class 2 or 3 Piping, Section III, Division 1
12-11-89
2/20/04 N-650
02-12-93 N-315
Use of SA-537, Class 2 Plate Material in Non-pressure Boundary Application Service 700EF to 850EF, Class 1 or CS, Section III, Division 1
02-14-83
2/20/04 N-657 Use of the N-1A Data Report for Spent Fuel Canisters, Section III, Division 1
02-19-86
2/25/02 N-692 Use of Standard Welding Procedures, Section III, Divisions 1 and 2
02-19-89
6/17/03 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,  
02-05-92 Projection Resistance Welding of Valve Seats, Section III,  
Division 1  
Division 1, Class 1, 2, and 3 Valves 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,  
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 Code Case N-315 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: Prior to repair the user will quali fy the repair procedures on a full-scale mockup bellow to ensure that the repair meets all design requirements for bellows.
Division 1
1/05/06 N-703 Use of Strain Hardened Austenitic Material at Lower Design Stress Values for Class 1 Valves, Section III, Division 1
5/04/04 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  
5/04/04 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


Rev. 35 of RG 1.84, Page 8 Code Case Number Table 1 Acceptable Section III Code Cases Date N-727 Dissimilar Welding Using Continuous Drive Friction Welding for Reactor Vessel CRDM/CEDM Nozzle to Flange/Adapter Welds, Classes 1, Section III,
N-345-1  
Division 1
12-13-82
2/24/06 N-732 Magnetic Particles Examination of forgings for Construction, Section III,
06-30-88
Division 1  
03-14-91
1/20/05 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
03-14-94 Attachment of AMS 5382 Alloy 31 Seat Rings by Fric tion Welding, Section III,  
1/05/06 N-738 NDE of Full Penetration Butt Welds in Class 2 Supports, Section III,     
Division 1, Classes 1, 2, and 3 N-391-1
Division 1  
07-24-89 Procedure for Evaluation of the
7/01/05 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,
07-27-92 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 fol lowing conditions in addition to those specified in the Code Case: The following typographical errors need to be corrected:
Division 1  
1. In equation (3) the + sign should be changed to an = sign.
10/11/05 N-744 Use of Metric Units Boiler and Pressure Vessel Code, Section III, Divisions 1 and 3, and Section V and IX
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  
1/05/06 N-756 Alternative  Rules for Acceptability for Class 1 Valves, NPS (DN 25) and Smaller with Non-welded End connections Other than flanges, Section III,
Division 1  
1/10/07 N-759 Alternative  Rules for Determining allowable External Pressure and Comprehensive Stress for Cylinders, Cones, Spheres, and formed Heads, Section III, Division 1
10/04/06


Rev. 35 of RG 1.84, Page 9
2. In equation (4) the first + sign should be changed to an = sign.
2.


Conditionally Acceptable Section III Code Cases  
N-392-2
12-11-92 N-393
11-28-83
07-30-86
07-30-89
07-27-92 N-395
12-11-89
12-11-92 N-452
03-08-89
04-30-92 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 Repair Welding Structural Steel Rolled Shapes and Plates for Component Supports, Section III, Division 1 Laser Welding, Section III,
Division 1 Specialized Subcontracted Welding Process (Electron Beam Welding), Section III,
Division 1 N-464
03-08-89 Laser Welding of Lap-Joints,
04-30-92 Section III, Division 1, Class 2 and 3 Construction
(2)
N-240
Other Code  
03-19-79
01-21-82
09-17-84
09-17-87
08-14-90
08-14-93 N-241
07-09-79
01-21-82
09-17-84
09-17-87
12-11-89
12-11-92 N-368
07-06-83
06-30-87
08-14-90
08-14-93 N-369
02-14-83
02-19-86
02-19-89
02-05-92 Cases Related to Fabrication 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,
Division 1, Classes 2 and 3 Resistance Welding of Bellows, Section III, Divi sion 1 c.


The Code Cases listed in Table 2 below are acceptable to the NRC 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.  The ASME issues a new edition of Section III every
Code Cases with Contingent Approval N-62-7
3 years.  Code Cases are published quarterly in supplements to each edition.  Hence, there are 12 supplements to each edition.
05-11-94 Internal and External Valve Items, Section III, Division 1, Class 1, 2, and 3 Code Case N-62-7 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the pro visions of NCA 4000.


Table 2. Conditionally Acceptable Section III Code Cases
1.84-4
1 11 J ,


Code Case Number Table 2 Conditionally Acceptable Section III Code Cases Date Title/Condition N-62-7 Internal and External Valve Items, Section III, Division 1, Classes 1, 2,  and 3
1792-2  
2/03/03 The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA-4000, AQuality Assurance.@  Class 3 valve manufacturers must also meet the provisions of NCA-4000 because all Code Class valve items are subject to the licensee=s 10 CFR Part 50, Appendix B approved QA program.
01-08-79 Fiberglass Reinforced Thermo (N-155-2) 01-21-82 setting Resin Pipe, Section III,  
01-21-85 Division 1  
01-21-88
03-14-91
03-14-94 Code Case 1792-2 (N-155-2) is acceptable subject to the following condition in addition to those condi tions specified in the Code Case: The applicant should satisfy the additional limitations that are specified in Regulatory Guide 1.72, "Spray Pond Piping Made from Fiberglass-Reinforced Thermosetting Resin."
N-192-2 09-16-81
09-17-84
09-17-87
08-14-90
08-14-93 N-284
08-25-80
05-25-83
07-30-86
07-30-89
07-27-92 Use of Braided Flexible Con nectors, Section III, Division 1, Class 2 and 3 Metal Containment Shell Buckling Design Methods, Section III, Division 1, Class MC
Code Case N-284 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: If axisymmetric techniques are employed in the analysis of vessels with large open ings, the applicability of the methodology in these ap plications should be demonstrated.


N-71-18 Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component Supports Fabricated by Welding, Section III, Division 1
===2. ANNULLED CODE CASES ===
5/09/03  
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. Such Code Cases, which were annulled on or after July 1,  
(1)
1974, are listed below by number, effective dates, 4 and title. 5
The maximum measured ultimate tensile strength (UTS) of the component support material must not exceed 170 ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking.
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.


(2)
1461-16
Certain applications may exist where a UTS value of up to 190 ksi could be considered acceptable for a material and, under this condition, the Design Specification must specify impact testing for the material. For these cases, it must be demonstrated by the applicant that:
03-09-72 Electron Beam Welding, Sec
(a)
02-16-77 tion I, III, and VIII, Division 1 and 2
the impact test results for the material meet Code requirements, (b)
1470-27
the material is not subject to stress corrosion cracking by virtue of the fact that:
12-18-72 External Pressure Charts for
(i)
11-04-74 High-Strength Carbon Steels and for Low-Alloy Steels, Sec tion VIII, Division 1 and 2, and Section III
a corrosive environment is not present, and (ii)
1471-1
the component that contains the material has essentially no residual stresses or assembly stresses, and (iii) it does not experience frequent sustained loads in service.
03-09-72 Vacuum Electron Beam Weld
01-01-78 ing of Tube Sheet Joints, Sec tion III
1477-1
03-09-72
01-01-78
1494-1
03-03-73
01-01-78 Use of 1970 Addenda of ANSI
B31.7, Section III
Weld Procedure Qualification Test, Section III
Depositing Weld Metal Prior to Preparing Ends for Welding, Section III, Division 1, Class 1,  
2, and 3 Construction Code Case N-292 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: Class 3 piping that is longitudi nally welded and that has a weld efficiency factor of 1.0
as selected from Table ND-3613.4-1 should receive a
100 percent volumetric examination (RT or UT) of the deposited weld metal in accordance with the require ments of ND-5000.


Rev. 35 of RG 1.84, Page 10
N-318-5 04-28-94 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping, Section III, Divi sion 1
Code Case Number Table 2 Conditionally Acceptable Section III Code Cases Date Title/Condition N-71-18 (contd)
1506
Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component Supports Fabricated by Welding, Section III, Division 1  
12-13-71 Stress Intensification Factors,  
5/09/03
01-01-78 Section III, Class 2 and 3 Piping
(3) In the last sentence of paragraph 4.2, reference must be made to paragraph
1516-2  
4.5.2.2, 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 longer periods of time.
08-11-75 Welding of Seats or Minor In (N-24)
07-01-78 ternal Permanent Attachments in Valves for Section III Ap plications
4Earlier date-date Code Case was approved by ASME; later date-date Code Case was annulled. Where more than two dates appear, the last date is the date that the Code Case was annulled. The middle date (or dates)
was the date of reaffirmation of the Code Case.


(4)
5Code Cases 1355-3, 1534, and 1554, which were listed in the original issue of the guide, were annulled by ASME action prior to July 1,1974.
Paragraph 15.2.2 is not acceptable as written and must be replaced with the following:  AWhen not exempted by 15.2.1 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 1000EF (540EC) and must not exceed 1150EF (620EC) for Class 1 and Class 2 material and 1175EF
(640EC) for Class 3 material.


(5)
6Code Case 1461-1 is no longer listed as a Section III Code Case and is therefore deleted from the acceptable listing.
The new holding time at temperature for weld thickness (nominal) must be
30 minutes for 2 inch or less, 1 hour per inch for thickness over 2 inch to
5 inches, and for thicknesses over 5 inches, 5 hours plus 15 minutes for each additional inch over 5 inches.


(6) The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, Class 2, and Class 3 component supports.
7The annulment of Code Case 1470-2 was effective upon ASME ap proval of Code Case 1630. However, because of an oversight, the annul ment was not noted until publication of Supplement No. 13 to the 1974 Code Cases.


N-155-2 Fiberglass Reinforced Thermosetting Resin Pipe, Section III, Division 1
1.84-5 N-292
2/03/03
01-05-81
(1)
11-28-83
The design temperature for spray pond piping must be 100EC (212EF).
07-30-86
(2)
07-30-89
The allowable design stress must be the value obtained from the minimum hydrostatic design basis (HDB) 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 105 pressure cycles from atmospheric to design pressure.
07-27-92


(3)  
1516-2 (N-24)
The value of AK@ 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.
11-20-788
01-01-80
Welding of Seats or Minor In ternal Permanent Attachments in Valves for Section III Ap plications
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 (N-30-1)
11-21-77 Metal Bellows and Metal Dia
01-01-81 phragmr Stem Sealed Valves, Section III, Division 1, Classes
1, 2, and 3 N-31-1  
07-18-85
07-18-88
03-14-91
07-01-93 Elastomer Diaphragm Valves, Section III, Class 2 and 3 Code Case N-31-1 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: Each applicant who applies the Code Case should indicate in the referencing Safety Analysis Report that the service life of the elastomer di aphragm 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 es tablished 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 com bined service and storage life of the elastomer dia phragm should not exceed 10 years.


(4)  
1541-3
RTR piping must be uninsulated or uncovered and installed under conditions that make it readily accessible for inspection.
05-15-78 Hydrostatic Testing of Em (N-32-3) 07-01-79 bedded Class 2 and Class 3 Piping for Section III, Division
1 Construction
8This revision of the Code Case was originally approved by the ASMEon
8-11-75 and was annulled on 7-1-78 because of the publication of revi sions to Section III in the Winter 1977 Addenda. However, the users did not believe that the Code Case was covered in the Code revision; there fore, ASME reaffirmed the Case on 11-20-78. Because of these circum stances 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.


(5)
9Code Case was annulled on date as indicated, but the annulment was first indicated in Revision 12 to this guide.
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.


Rev. 35 of RG 1.84, Page 11 Code Case Number Table 2 Conditionally Acceptable Section III Code Cases Date Title/Condition N-249-14 Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component Supports Fabricated Without Welding, Section III, Division 1  
N-32-4
2/20/04
03-16-81 Hydrostatic Testing of Em
(1)  
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 conditions specified in the Code Case:
The fracture toughness requirements apply only to piping supports and not to Class 1, Class 2, and Class 3 component supports.
The acceptance was based on the following clarifi cation and interpretation. Code Case N-32-4 does not replace paragraph NC/ND 6129, "Provisions for Em bedded 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) per mit liquid penetrant or magnetic particle testing in place of radiographic testing for Class 3 piping with
3/8" nominal wall thickness or less.


(2)  
Paragraph (1) contains an additional requirement to the Code. It was, therefore, acceptable but unneces sary to include in the Code Case. Paragraph (2) is a vari ation in the volumetric examination technique and was acceptable as written. Paragraph (3) contains an addi tional requirement and is not a relaxation of the Code. It was, therefore, acceptable but unnecessary to include in the Code Case.
The following is to be added to paragraph (e) of the Code Case:
(a) 
AFor these cases, it must be demonstrated by the Owner that: (i) the impact test results for the material meet Code requirements, and (ii) the material is not subject to stress corrosion cracking by virtue of the fact that: a corrosive environment is not present; the component that contains the material has essentially no residual stresses or assembly stresses; and it does not experience frequent sustained loads in service.@
N-570-1 Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1,
2, 3, and MC, Section III, Division 1
1/05/06 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.


N-626 Use of Plastic Analysis for the Design of Type B Containment Components for Nuclear Material Transportation Casks, Section III, Division 3
1552-1 (N-35-1)
7/23/02
1553-19
(1)
08-29-77
For the acceptability of a design by analysis, Paragraph WB-3211, ARequirements for Acceptability,@ of Section III, Division 3, Subsection WB, AClass TP (Type B) Containment,@ Subparagraphs (a) through (d)
07-01-79
must be applied.
03-03-75
01-01-76
1555-1
01-14-77
01-01-78
1569
03-03-7510
07-01-79 Design by Analysis of Section III, Class 1 Valves Upset Heading and Roll Threading of SA-453 for Bolt ing in Section III
Certification of Safety Relief Valves, Section III, Division 1 Design of Piping for Pressure Relief Valve Station, Section III
Code Case 1569 was acceptable subject to com pliance with the recommendations contained in Regu latory Guide 1.67, "Installation of Over-pressure Protection Devices."
1573
04-30-73 Vacuum Relief Valves, Section
01-01-78 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 Sec tion III, Class 1, 2, and 3 Construction
'0Corrected date.


(2)
1.84-6
There is a typographical error in the title of Paragraph (a)(2) of the Code Case. Paragraph WB-3277 does not exist.  Paragraph WB-3227, AApplications of Inelastic Analysis Procedures,@ of Section III, Division 3, Subsection WB, AClass TP (Type B) Containment,@ is to be used.


(3)  
1581
The first paragraph of WB-3324, ADesign for Local Puncture Associated with a Hypothetical Accident Condition,@ of Section III, Division 3, Subsection WB, AClass TP (Type B) Containment,@ must be applied.  The second paragraph of WB-3324 may be applied.  In lieu of the third paragraph of WB-3324, the following may be applied: AIn lieu of the application of the equation for outer shell thickness (treq) the response of the containment boundary to puncture test loadings may be evaluated using plastic analysis according to the rules in Appendix F, ARules for Evaluation of Service Loadings with Level D Service Limits.@
06-25-73 Power-Operated Pressure Re
03-01-79 lief Valves, Section III
1588 S(N-46)
08-13-73
03-19-79
03-19-82
1630-1
07-10-78 (N-66-1) 07-10-81 Electro-Etching of Section III
Code Symbols
1601
11-05-73 Limits of Reinforcement for
07-01-74 Two-Thirds Area, Section III,  
Class 1
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 in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.


Rev. 35 of RG 1.84, Page 12 Code Case Number Table 2 Conditionally Acceptable Section III Code Cases Date Title/Condition N-655 Use of SA-738, Grade B, for Metal Containment Vessels, Class MC, Section III,  
1607-1  
Division 1
11-04-74 Stress Criteria for Section III,  
2/25/02 For metal containment vessels up to 1.75 inch thick:
07-01-77 Classes 2 and 3 Vessels De signed to NC/ND-3300 Ex cluding the NC-3200 Alternate Code Case 1607-1 was acceptable subject to the in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.
(1)
Supplementary Requirement S17, AVacuum Carbon-Deoxidized Steel,@ of Material Specification SA-738 must be applied to the material, and  
(2)
Supplementary Requirement S20, AMaximum Carbon Equivalent for Weldability,@ of Material Specification SA-738 must be applied to the material.


N-656 Rules for the Construction of Inner Transportation Containments, Section III,  
N-55-1
Division 3
(1609)
2/25/02 The inner transportation containment must contain only solid and dry material.
04-05-84 Inertia and Continuous Drive
04-05-87 Friction Welding, Section III,
Division 1
1614
12-17-7310
01-01-79
1620
(N-61)
03-02-74
01-08-79
01-08-82 Hydrostatic Testing of Piping Prior To or Following the Installation of Spray Nozzles for Section III, Classes 1, 2, and 3 Piping Systems Stress Category for Partial Pen etration Welded Penetrations, Section III, Class 1 Construc tion
1623
03-02-74 Design by Analysis for Section
03-01-79 III, Class 1 Sleeve-Coupled and Other Patented Piping Joints
1630-1 (N-66-1)
12-11-8111
12-05-84
12-05-87 External Pressure Charts for High Yield Strength Carbon Steels and Low Alloy Steels.


Rev. 35 of RG 1.84, Page 13
(Yield Strength above 38 Ksi to
3.
60 Ksi Inclusive.) For Section III, Class 1, 2, 3, and MC
External Pressure Charts for High Yield Strength Carbon Steels and Low Alloy Steels.


Annulled Unconditionally Approved Section III Code Cases
(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 Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1635-1 was acceptable subject to the in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.


The Code Cases listed in Table 3 were previously unconditionally approved by the NRC and have been annulled by the ASME. The third column of the table lists the date that the ASME annulled the Code Case.
1636-112 08-12-74 Stress Criteria for Section III,
07-01-77 Class 2 and 3 Pumps Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1636-1 was acceptable subject to the in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.


Table 3.  Annulled Unconditionally Approved Section III Code Cases
1651
08-12-74 Interim Requirements for Cer
03-01-79 tification of Component Sup ports, Section III, Subsection NF
lIThe Code Case was annulled on July 10, 1981 (ASME mandatory an nulment date). It was reinstated on December 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.


Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date N-1-7
12Code 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.
(1332-7)
Requirements for Steel Forgings, Section III, Division 1
7/01/82 N-2
(1334-3)
Requirements for Corrosion-Resisting Steel Bars and Shapes, Section III
1/01/82 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
3/01/79 N-7-1


High Yield Strength Steel, Class 1, Section II, Division 1
1.84-7
2/22/05 N-9-4
(1395-4)
SA-508, Class 2 Forgings with Modified Manganese Content, Section III
7/01/82 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
3/01/79 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
7/01/82 N-24
(1516-2)
Welding of Seats or Minor Internal Permanent Attachments in Valves for Section III Applications
1/01/80
N-30-1
(1539-1)
Metal Bellows and Metal Diaphragm Stem Sealed Valves, Section III,
Division 1, Classes 1, 2, and 3
1/01/81 N-32-3
(1541-3)
Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III, Division 1 Construction
7/01/79 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
7/01/79 N-37-3 Steel Products Refined by Secondary Remelting, Section III and VIII, 
7/01/82


Rev. 35 of RG 1.84, Page 14 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date
1657
(1557-3)
11-04-74 Stress Criteria for Class 2 and
Division 1 and 2 N-41
07-01-77
(1571)  
3 Atmospheric and Low Pres sure (0-15 psig) Steel Storage Tanks
Additional Material for SA-234 Carbon Steel Fittings, Section III  
1659
1/21/85 N-43
11-04-74 Interconnection of Two Piping
(1578)
07-01-77 Systems for Section III, Class
SB-167 Nickel-Chromium-Iron (Alloy 600) Pipe or Tube, Section III
1, 2, and 3 Construction
7/01/82 N-46
1660
(1588)  
(N-77)
Electro-Etching of Section III Code Symbols
11-04-74 Overpressure Protection Under
3/19/82 N-48-2 Fabrication and Installation of Elevated Temperature Components, Section III, Division 1  
03-01-79 Emergency Operating Condi tions for Section III, Class 1
7/01/96 N-49-4 Examination of Elevated Temperature Nuclear Components, Section III, Class 1
1661
7/01/96 N-50-1 Testing of Elevated Temperature Components, Section III, Division 1, Class 1  
11-04-74 Postweld Heat Treatment
7/01/96 N-51-2 Protection Against Overpressure of Elevated Temperature Components, Section III, Division 1, Class 1
01-01-78 P-No.1 Materials for Section III, Class 1 Vessels
7/01/96 N-55-1
1662
(1609)
11-04-74 Shop Assembly of Compo
Inertia and Continuous Drive Friction Welding, Section III,    
01-01-78 nents, Appurtenances and Pip ing Subassemblies for Section III, Class 1, 2, 3 and MC
Division 1
Construction
4/05/87 N-56
1665 (N-81)
(1612)
11-04-74 Pressure-Temperature Ratings
Use of Type 308 Stainless Steel Rod and Bar for Section III,            
07-01-78 for Class 1 Valves Made from
Class 1, 2, 3, and CS Construction  
5 Cr-1/2 Mo, Section III
7/01/78 N-61
1672
(1620)  
11-04-74 Nuclear Valves for Section III,
Stress Category for Partial Penetration Welded Penetrations, Section III, Class Construction
03-21-77 Division 1, Class 1, 2, 3 Construction
1/08/82 N-65-1
1675
(1626-1)
12-16-74 Tubesheet to Shell or Formed
Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings, Section I and III  
07-01-76 Head Weld Joints, Section III,  
1/21/85 N-66-1
Class 1 Vessels
(1630-1)
16769
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
12-16-74 Clarification of Stress Intensi
12/05/87 N-68
07-01-76 ties in Curved Pipe or Welded Elbows, Section III
(1634-2)
1677 (N-82)
Use of SB-359 for Section III, Division, 1, Class 3 Construction
12-16-74 Clarification of Flange Design  
7/01/78 N-77
03-01-79 Loads, Section III, Class 1, 2, and 3
(1660)
1678
Overpressure Protection Under Emergency Operating Conditions for Section III, Class 1  
12-16-74
7/01/77 N-81
01-08-79  
(1665)
01-01-80
Pressure-Temperature Ratings for Class 1 Valves Made from     
Butterfly Valves of Circular Cross Section Larger than 24 in. NPS for Section III, Class 2 and 3 Construction
5 Cr-1/2 Mo, Section III  
1685
7/01/78 N-82  
04-28-75 Furnace Brazing Section III,
(1677)  
01-01-78 Class 1, 2, 3 and MC Construc tion
Clarification of Flange Design Loads, Section III, Class 1, 2, and 3  
1686
3/01/79 N-84
03-03-75 Furnace Brazing, Section III,
(1681-1)
01-01-78 Subsection NF, Component Supports
Organizations Accepting Overall Responsibility for Section III  
1689-1
Construction
09-10-76 Alternate PWHT Time and
3/01/79 N-90
01-01-78 Temperature for SA-182 Grade F-22, SA-387 Grade 22, Class
(1692)
2, and SA-335 Grade P-22 Sec tion III, Class 1, 2, 3 and CS
Rules for Design of Welded Class 1 Pumps
Code Case 1689-1 was acceptable subject to the following condition in addition to that specified in the Code Case: The alternate postweld heat treatment should be prequalified along with the applicable weld ing procedure in accordance with ASME Section IX.
7/01/78 N-94
(1700)
Determination of Capacities of Liquid Relief Valves, Section III,
Division 1, Class 1, 2, and 3
3/19/82


Rev. 35 of RG 1.84, Page 15 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date N-95-2
1692 (N-90)
(1701-2)  
1695-1
Determination of Capacities of Vacuum Relief Valves, Section III,
1700
Division 1, Classes 2, 3, and MC and Division 2 Concrete Containments
(N-94)
7/09/82 N-96-1
04-28-75
(1702-1)
07-01-78
Flanged Valves Larger than 24 inches for Section III, Division 1, Class 1, 2, and 3 Construction
11-03-75
1/01/80
01-01-78
N-101
11-03-75
(1712)
03-19-79
Nameplates and Stamping for Section III, Division 1, Class 1, 2, 3 and MC Construction as Referenced in NA-8300
03-19-82
3/01/79 N-102-2 Postweld Heat Treatment of P-1 Material, Section III, Class MC
1701-2
6/30/84 N-107-1
07-09-79 (N-95-2) 07-09-82
(1722-1)  
1702-1  
Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division 1
07-11-77 (N-96-1) 01-01-80
1/08/82 N-108
LL
(1724)
Rules for Design of Welded Class 1 Pumps Brazing, Section III, Division  
Deviation from the Specified Silicon Ranges in ASME Material Specifications, Section III, Division 1, and VIII, Division 1 and 2
1, Class 3 Determination of Capacities of Liquid Relief Valves, Section III, Division 1, Class 1, 2, and 3 Determination of Capacities of Vacuum Relief Valves, Section III, Division 1, Classes 2, 3, and MC and Division 2 Con crete Containments Flanged Valves Larger than 24 inches for Section III, Division  
7/01/78 N-109
1, Class 1, 2, and 3 Construc tion
(1726)
1703
Refinement of Low Alloy Steel Heat Affected Zone Under Overlay Cladding, Section III, Division 1, Class 1 Components
06-30-75 Brazing of Copper Alloys, Sec
3/01/79 N-111
01-01-78 tion III, Class 2  
(1729)
1706
Minimum Edge Distance-Bolting for Section III, Division 1, Class 1, 2, and 3 and MC Construction of Component Supports
06-30-75 Data Report Forms for Compo
3/01/79 N-114
12-31-75 nent Supports, Section III,  
(1732)
Class 1, 2 and 3
Hardsurfaced Valves with Inlet Connections less than 2-in. Nominal Pipe Size for Section III, Division 1, Class 1 and 2 Construction
1681-113 03-03-75 Organizations Accepting Over (N-84)  
1/01/79 N-115
03-01-79 all Responsibility for Section III Construction
(1733)
1683-1  
Evaluation of Safe Shut Down Earthquake Loadings for Section III,  
03-01-76 Bolt Holes for Section III,  
Division 1, Class MC Containment Vessels
07-01-76 Class 1, 2, 3 and MC Compo nent Supports
1/01/78 N-119-6 Pump Internal Items, Section III, Division 1, Class 1, 2, and 3
13Code Case 1681 was approved by ASME on 12-16-74 and revised on
3/14/94 N-121
3-3-75. Because Code Case 1681 was not in effect on March 31, 1975, the Code Case was not included in this guide.
(1744)
Carbon Steel Pipe Flanges Larger than 24 in., Section III, Division 1, Class 2 and 3 Construction
3/01/79 N-123
(1746)
Leak Testing of Seal Welds, Section III, Division 1, Class 1, 2, and 3 Construction
3/01/79 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
7/01/78 N-126
(1754)
Hard Surfacing by the Spray-Fuse Method, Section III, Class 1, 2, and
3 Construction
7/01/88 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
1/01/79 N-140
(1772)  
Use of SA-453 Bolts in Service Below 800EF 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
1/01/80
N-147
(1781)
Use of Modified SA-487 Grade CA6NM, Section III, Division 1, Class 1, 2, 3, MC or CS
7/01/78 N-148
(1782)
Use of Copper-Nickel Alloy 962 for Castings, Section III, Division 1, Class 3 Construction
6/30/83 N-156 Structural Steel Rolled Shapes, Section III, Division I, Class 2, 3,
2/14/86


Rev. 35 of RG 1.84, Page 16 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date
1711 (N-100)
(1793)
11-03-75
and MC
01-08-79
N-157
01-21-82
(1794)  
01-01-83 Pressure Relief Valve Design Rules, Section III, Division 1, Class 1, 2 and 3 Code Case 1711 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case. The following information should be provided in the Safety Analysis Report:
Use of Seamless Al-Br, Alloy CDA 614 Pipe, Section III, Division 1, Class 3
(1) If stress limits are used in excess of those speci fied for the upset operating condition, it should
1/07/83 N-158
1.84-8
(1795)
Examination of Weld Repairs in Forgings, Section III, Division 1, Class 1, 2, 3, MC and CS
7/01/78 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
7/01/78 N-174
(1812)
Size of Fillet Welds for Socket Welding of Piping, Section III,   
Division 1
1/01/81 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
1/01/84 N-178 Use of ASTM B271, CDA 954, Alloy 9C for Class 3 Construction, Section III, Division 1
1/01/80
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
7/01/78 N-181 Steel Castings Refined by the Argon Decarburization Process, Section III, Division 1, Construction
7/11/80
N0182 Alternate Rules for Procedure Qualification Base Material Orientation, Section III, Division 1, Class 2 and 3 Construction
7/01/81 N-183 Use of Modified SA-182 Grade F22 for Section III, Division 1, Class 1,
2 and 3 Construction
1/01/80
N-184 Roll Threading of SA-453 Bolting for Section III, Division 1, Class 1,
2, 3, or CS Construction
7/01/79 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
7/01/79 N-190
Use of SA-455 for Class 3 Components, Section III, Division 1
7/01/78 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
7/01/92


Rev. 35 of RG 1.84, Page 17 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,
be demonstrated how the pressure relief func tion is ensured. Refer to paragraph 3.1, Section I, of the Case for Class 1 and paragraph 3.2, Section II, of the Case for Class 2 and 3 pres sure relief valves.
Division 1, Class 1, 2, and 3 Components
1/01/81 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 AButtering@ with Alloy Weld Metal and Heat Treatment May Be Involved, Section III, Division 1, and Section IX.


1/01/81 N-214-2 Use of SA-351 Grade CN7M, for Valves, Section III, Division 1
(2) If Case 1660 is to be used in conjunction with this Case, it should be stated that the stress lim its of Case 1660 supersede those of paragraph
12/31/83 N-215 Integrally Finned Titanium Tubes, Section III, Division 1, Class 3 Construction
3.2(b), Section I, of Case 1711. Functional as surance of (1) above is required in all situa tions.
5/15/81 N-217-1 Post-weld 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
4/05/90
N-225 Certification and Identification of Material for Component Supports, Section III, Division 1
1/01/81 N-226 Temporary Attachment of Thermocouples, Section III, Division 1, Class 1, 2 and 3 Component Supports
1/01/80
N-227 Examination of Repair Welds, Section III, Class 2 and 3 Tanks
7/09/82 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
7/01/92 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
7/01/88 N-240
Hydrostatic Testing of Open Ended Piping, Section III, Division 1
7/01/97 N-241 Hydrostatic Testing of Piping, Section III, Division 1
7/01/97 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


Rev. 35 of RG 1.84, Page 18 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
1712 (N-101)
4/30/93 N-248 Alternative Reference Radiographs, Section III, Division 1, Classes 1,  
08-11-75 Nameplates and Stamping for  
2, 3, MC, and CS Construction  
03-01-79 Section III, Division 1, Class 1,  
7/01/80
2, 3 and MC Construction as Referenced in NA-8300
N-259 Ni-Cu-Al Bolting Material SB 164 Modified, Section III, Division 1, Class 3
17189
1/01/84 N-261 Weld Procedure Qualification for Materials with Impact Requirements for Section III, Division 1, Class 3 Construction
08-11-75 Design of Structural Connec
12/13/82 N-262 Electric Resistance Spot Welding for Structural Use in Component Supports, Section III, Division 1
07-01-76 tions for Linear Type Compo nent Supports, Section III, Di vision 1, Class 1, 2 and 3 and MC  
7/27/91 N-265-1 Modified SA-487 Castings, Section III, Division 1, Class 1
17199
8/14/97 N-267 Double-Wall Radiography, Section III, Division 1, Class 1 and 2
08-11-75 Single-Welded, Full
7/01/81 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
07-01-76 Penetration Sidewall Butt Joints in Atmospheric Storage Tanks, Section III, Division 1, Class 2
2/14/86 N-272 Compiling Data Report Forms, Section III, Division 1
1720-2 (N-106-2)
1/01/82 N-276 Welding of SA-358 Pipe, Section III, Division 1
11-20-78
2/14/86 N-277 Use of Type XM-19 Austenitic Stainless Steel for Section III,   
08-28-81
Division 1 Class MC Construction
09-17-84
9/17/80
09-17-87
N-280
08-14-90
Alternate Rules for Examination of Welds in Section III, Class 3 Storage Tanks  
08-14-93 Weld End Preparation for Sec tion III, Division 1 Construc tion Code Case 1720-2 (N-106-2) was acceptable sub ject to the following condition in addition to those con ditions specified in the Code Case: The acceptance of weld end preparations other than those shown in Fig ures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.
7/01/81 N-281 Welding Operator Performance Qualification, Section III, Division 1
7/01/81 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
12/01/83 N-298 Examination of Component Supports, Section III, Division 1, Class 1, 2, 3, and MC
12/01/83 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
12/01/83 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
1/01/03 N-309-1 Identification of Materials for Component Supports, Section III,
Division 1
7/01/95


Rev. 35 of RG 1.84, Page 19 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date N-313 Alternative Rules for Half-Coupling Branch Connections, Section III,
1726 (N-109)  
Division 1, Class 2
1727 (N-l10)
7/01/96 N-316 Alternative Rules for Fillet Weld Dimensions for Socket Welding Fittings, Section III, Division 1, Class 1, 2, and 3
11-03-75 Refinement of Low Alloy Steel  
8/14/93 N-317 ASTM A276 Bar, Section III, Division
03-01-79 Heat Affected Zone Under Overlay Cladding, Section III,  
7/01/82 N-320
Division 1, Class 1 Compo nents
Alternate PWHT for SA-487, Grade CA6NM, Section III, Division 1
12-22-75 Alternate Test Fluids, Section  
12/31/83 N-321-1 Use of Modified SA-249, Grade TP 304, Section III, Division 1, Class 1
01-01-79 III, Division 1 Code Case 1727 was acceptable subject to the fol lowing condition in addition to those conditions speci fied 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 in formation provided should demonstrate that the fluid selected will not have deleterious effects on the mate rial 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.
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-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, Division 1 and 2
7/01/88 N-342 Use of SA-249 and SA-312 Type 317 Stainless Steel, Section III,
Division 1, Classes 1, 2, and 3
4/02/85 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 700EF Without Stress Rupture Tests, Section III, Division 1
6/30/86 N-353 Marking of SA-354 Grade BD Bolting, Section III, Division 1  
9/05/88 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
8/09/96 N-357 Certification of Material for Component Supports, Section III,
Division 1, Subsection NF
7/01/88 N-359 Weld Connection for Coaxial Cylinders, Section III, Division 1, Class 1
12/31/84


Rev. 35 of RG 1.84, Page 20
1729 (N-Ill)
Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date N-362-2 Pressure Testing of Containment Items, Section III, Division 1, Classes 1, 2, and MC
1732 (N-114)
7/01/88 N-367 SA-372 Type V, Grade 1, Class B, Section III, Division 1
1733 (N-115)
2/19/89 N-368 Pressure Testing of Pump Discharge Piping, Section III, Division 1, Classes 2 and 3
1734 (N-116)
7/01/95 N-370-2 Modified SA-705 Type XM-13 Forgings, Section III, Division 1
11-03-75 Minimum Edge Distance-Bolt
8/14/97 N-371-1
03-01-79 ing for Section III, Division 1, Class 1, 2, and 3 and MC  
12Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals, Section III, Division 1
Construction of Component Supports  
7/18/88 N-372 SB-163 Ni-Fe-Cr-Mo-Cu Alloy 825 (UNS N08825) Tubing, Section III,
11-03-75 Hardsurfaced Valves with Inlet
Division 1
01-01-79 Connections less than 2-in.
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-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
3/02/01 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
7/01/95 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


Rev. 35 of RG 1.84, Page 21 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date 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
Nominal Pipe Size for Section III, Division 1, Class 1 and 2 Construction  
7/27/95 N-420
11-03-75 Evaluation of Safe Shut Down
Linear Energy Absorbing Supports for Subsection NF, Classes 1, 2, and 3 Construction  
01-01-78 Earthquake Loadings for Sec tion III, Division 1, Class MC
1/01/99 N-421 Brazing Using a Radiant Energy Source, Section III, Division 1
Containment Vessels
6/30/86 N-433 Non-Threaded Fasteners for Section III, Division 1, Class 1, 2, and 3 Components and Piping Supports
11-03-75 Weld Design for Use for Sec
12/16/95 N-438-4 UNS N08367 Material, Section III, Division 1, Class 2 and 3 Construction
01-01-78 tion III, Division 1, Class 1, 2,  
7/01/98 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
3 and MC Construction of Component Supports Code Case 1734 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: 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 ap plication of the configuration shown in Figures 2 and 3 should be restricted to the welding of cans for spring en capsulation 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 end of the plate;
9/18/01 N-440-1 Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction, Section III, Division 1
also, the leg of the fillet weld adjacent to the shell should be equal to the thickness of the exposed end of the shell.
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
3/08/92 N-443-2 High Yield Strength Cr-Mo Steel, Class 1 Components, Section III,
Division 1
1/01/01 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
5/09/03 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
1/01/92 N-470
Class MC Material Requirements [NE-2121(c)], Section III,   
Division 1
3/08/92 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
1/01/00
N-475 Materials in Inventory, Section III, Division 1
12/11/92 N-476 Class 1, 2, 3, and MC Linear Component Supports - Design Criteria for Single Angle Members, Section III, Division 1, Subsection NF
7/01/96 N-482 Direct Quenched Stainless Bar, ASTM A 479-88b, Section III,   
Division 1
3/05/93 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,   
1/01/00


Rev. 35 of RG 1.84, Page 22 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date and 3 N-497-1 Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials, Section III,
1739-4
Division 1, Class 2 and 3 Construction
11-17-80
1/01/99 N-501 Alternative Rules for NCA-3800, 1990 Addenda, Section III,   
Pump Internal Items, Section (N-119-4) 12-01-8314 11I, Division 1, Class 1, 2, and 3 N-119-6 09-05-85 Pump Internal Items, Section  
Division 1
07-27-88 III, Division 1, Class 1, 2 and 3  
12/31/93 N-502 SA-268, Grade 26-3-3 (UNS S44660), Section III, Classes 2 and 3
03-14-91
1/01/00
03-14-94
N-507 Identification of Welders, Section III, Division 2
14TheCode Case was annulled on December 1, 1983 (ASME mandatory annulment date). It was reinstated on February 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.
7/27/05 N-519 Use of 6061-T6 and 60610T651 Aluminum for Class 1 Nuclear Components, Section III, Division 1  
2/03/02 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-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-570
Alternative Rules for Linear Piping and Linear Standard Supports for Class 1, 2, 3, and MC, Section III, Division 1
3/28/06 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
1141-7 Foreign Produced Steel
7/23/76
1434-1 Postweld Heat Treatment of SA-487 Class 8N Steel Castings, Section III
1/01/78
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
11/04/74
1471-1 Vacuum Electron Beam Welding of Tube Sheet Joints, Section III
1/01/78
1475-1 Ferritic-Austenitic Stainless Steel Seamless Tubes for Section III,
Class 2 and 3 Construction
7/01/75
1477-1 Use of 1970 Addenda of ANSI B31.7, Section III
1/01/78
1494-1 Weld Procedure Qualification Test, Section III
1/01/78
1506 Stress Intensification Factors, Section III, Class 2 and 3 Piping
1/01/78
1515 Ultrasonic Examination of Ring Forgings for Shell Sections, Section III, Class 1 Vessels
7/01/77
1529 Materials for Instrument Line Fittings, Section III
7/01/73


Rev. 35 of RG 1.84, Page 23 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date
1.84-9
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
1/01/78
1533 Pressure Temperature Ratings of SA-351 Grades CF8A, CF3, and CF3M, Section III
7/01/75
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
7/01/77
1553-1 Upset Heading and Roll Threading of SA-453 for Bolting in Section III
1/01/76
1555-1 Certification of Safety Relief Valves, Section III, Division 1
1/01/78
1567 Testing Lots of Carbon and Low Alloy Steel Covered Electrodes, Section III
1/01/78
1568 Testing Lots of Flux Cored and Fabricated Carbon and Low Alloy Steel Welded Electrodes, Section III
1/01/78
1573 Vacuum Relief Valves, Section III
1/01/78
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
1/01/78
1581 Power-Operated Pressure Relief Valves, Section III
3/01/79
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
7/01/74
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
7/01/74
1605 Cr-Ni-Mo-V Bolting Material for Section III, Class 1 Components
3/17/80


Rev. 35 of RG 1.84, Page 24 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date
1744 (N-121)
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
03-01-76 Carbon Steel Pipe Flanges
3/21/77
03-01-79 Larger than 24 in., Section III,  
1613 Use of SA-372 Class IV Forgings, Section III Construction
Division 1, Class 2 and 3 Construction
1/01/78
1765
1614 Hydrostatic Testing of Piping Prior To or Following the Installation of Spray Nozzles for Section III, Classes 1, 2, and 3 Piping Systems
04-26-76 Machining After Hydrostatic
1/01/79
07-01-77 Testing Class 2 and 3 Con struction, Section III,  
1615 Use of A587-73, Section III, Class 3 Construction
1/01/78
1616 Ultrasonic Examination of Seamless Austenitic Steel Pipe, Section III,
Class 1 Construction
7/01/75
1622 PWHT of Repair Welds in Carbon Steel Castings, Section III,        
Class 1, 2,and 3
1/01/76
1623 Design by Analysis for Section III, Class 1 Sleeve-Coupled and Other Patented Piping Joints
3/01/79
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
1/01/78
1637 Effective Date for Compliance with NA-3700 of Section III
1/01/75
1645 Use of DeLong Diagram for Calculating the Delta Ferrite Content of Welds in Section III, Class 1, 2, and CS Construction
1/01/76
1648 SA-537 Plates for Section III, Class 1, 2, 3, and MC Components
7/01/76  
1649 Modified SA-453-GR 660 for Class 1, 2, 3, and CS Construction
1/01/76
1650
Use of SA-414 Grade C for Class 2 and 3 Components, Section III,  
Division 1  
Division 1  
12/31/74
1768
1651 Interim Requirements for Certification of Component Supports, Section III, Subsection NF
06-29-76 Permanent Attachments to
3/01/79
01-01-78 Containment Vessels-Class MC, Section III, Division 1  
1657 Stress Criteria for Class 2 and 3 Atmospheric and Low Pressure
1769-1  
(0-15 psig) Steel Storage Tanks
02-16-77 Qualification of NDE Level III  
7/01/77
10-01-77 Personnel, Section III,  
1659 Interconnection of Two Piping Systems for Section III, Class 1, 2, and
Division 1
3 Construction
1774-1  
7/01/77
07-11-77 (N-142-1) 01-01-80
1661 Postweld Heat Treatment P-No.1 Materials for Section III, Class 1 Vessels  
Minimum Wall Thickness for Class 2 and 3 Valves, Section III, Division 1
1/01/78
1775
1662 Shop Assembly of Components, Appurtenances and Piping Subassemblies for Section III, Class 1, 2, 3, and MC Construction
08-13-76 Data Report Forms for Core
1/01/78
08-13-79 Support Structures, Class CS,  
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
7/01/75
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
7/01/76
 
Rev. 35 of RG 1.84, Page 25 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date
1676 Clarification of Stress Intensities in Curved Pipe or Welded Elbows, Section III
7/01/76
1678 Butterfly Valves of Circular Cross Section Larger than 24 in. NPS for Section III, Class 2 and 3 Construction
1/01/80
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
7/01/76
1684 A637 Grade 718 for Bolting Class 1 and 2 Construction
1/01/76
1685 Furnace Brazing Section III, Class 1, 2, 3 and MC Construction
1/01/78
1686 Furnace Brazing, Section III, Subsection NF, Component Supports
1/01/78
1690
Stock Materials for Section III Construction, Section III, Division 1
1/01/77  
1691 Ultrasonic Examination in Lieu of Radiography of Repair Welds for Vessels, Section III, Class 1
1/01/78
1703 Brazing of Copper Alloys, Section III, Class 2
1/01/78
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
7/01/76
1719 Single-Welded, Full-Penetration Sidewall Butt Joints in Atmospheric Storage Tanks, Section III, Division 1, Class 2
7/01/76
1728 Steel Structural Shapes and Small Material Products for Components Supports, Section II, Division 1 Construction
7/01/77  
1740
Weld Metal Test, Section III, Class 1, 2, 3, MC and CS
7/01/76
1741-1 Interim Rules for the Required Number of Impact Tests for Rolled Shapes, Section III, Division 1, Subsection NF, Components Supports
1/01/78
1742 Use of SB-75 Annealed Copper Alloy 122, Section III, Division 1, Class 2 Construction
7/01/76
1743 Use of SB-98 Cu-SiB Rod CDA651 Section III, Division 1, Class 2 Components
7/01/76
1760
Maximum Dimensions for Isolated Pores in WeldsBClass 1 Components, Section III, Division 1
7/01/77
1765 Machining After Hydrostatic Testing Class 2 and 3 Construction, Section III, Division 1  
7/01/77
1766 Testing Requirements for Welding Materials, Class 1, 2, 3, MC and CS  
Construction, Section III, Division 1
7/01/77
1767 Examination of Tubular Products Without Filler Metal-Class 1 Construction, Section III, Division 1
1/01/77
1768 Permanent Attachments to Containment VesselsBClass MC,        
Section III, Division 1  
Section III, Division 1  
1/01/78
1780-1  
1769-1 Qualification of NDE Level III Personnel, Section III, Division 1  
07-10-7810 Hydrostatic Testing and Stamp (N-146-1) 12-11-81 ing of Components, Section III,  
10/01/77
01-01-82 Division 1, Construction Code Case 1780-1 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: On a generic basis, the ap plication 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 applica tion in which the Code Case is to be used should contain information showing that, as a minimum, the closure fixture will impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly. A closure fixture for the part being tested that is similar in size and shape to the actual mating part is considered adequate to impose these loads. It is not intended that piping reaction load ings be simulated in the hydrostatic testing.
1773 Use of Other Product Forms of Materials for Valves, Section III,
Division 1
7/01/77


Rev. 35 of RG 1.84, Page 26 Code Case Number Table 3 Annulled Unconditionally Approved Section III Code Cases Annulment Date
1783-1
1775 Data Report Forms for Core Support Structures, Class CS, Section III,  
01-14-77 Qualification of Nondestructive
Division 1
01-01-79 Examination Personnel, Sec tion III, Division 1 Code Case 1783-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The first sentence of paragraph
8/13/79
(1) should be replaced with the following: "The certifi cation of the Level III nondestructive examination per sonnel 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 responsi bility of the Certificate Holder."
1777 Use of SA-106, Grade C in Class MC Construction, Section III,
1791 (N-154)
Division 1
1796 (N-159)
7/01/77  
01-14-77 Projection Resistance Welding
1787 Depth of Weld Repairs for Forgings, Section III, Division 1, Class 1, 2,
01-14-80 of Valve Seats, Section III, Di vision 1, Class 1, 2 and 3 Valves
3, MC and CS Construction
01-14-77 Body Neck Thickness Deter
1/01/78  
07-01-78 mination for Valves with Inlet Connections 4-Inch Nominal Pipe Size and Smaller, Section III, Division 1, Class 1, 2, and 3
1798 Use of ASTM A352-75, Grades LCA and LCC, Section III, Division 1, Class 1, 2, and 3  
1808
1/01/78
02-16-77 F-Number Classification of  
1808 F-Number Classification of Low Alloy and Carbon Steel Bare Rod Electrodes, Sections I, II, III, IV, V, VIII, and IX.
01-01-78 Low Alloy and Carbon Steel Bare Rod Electrodes, Sections I, II, III, IV, V, VIII, and IX
1812, (N-174)
1818 (N-175)
03-23-77
01-07-80
01-01-81 Size of Fillet Welds for Socket Welding of Piping, Section III,
Division 1
03-23-77 Welded Joints in Component
07-01-79 Standard Supports, Section III,
Division 1 Code Case 1818 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: That portion of the unwelded housing that is limited to 90 0 maximum should include a minimum of two sectors that are uniform in length.


1/01/78
N-179
1810
07-11-77 Openings in Valves for Section
Testing Lots of Carbon Steel Solid, Bare Welding Electrode or Wire, Section III, Division 1, Class 1, 2, 3, MC, and CS
07-11-80
3/03/80
III, Division 1, Class 1, 2 and 3 Construction N-182
1819 Use of Type XM-19 for Construction, Section III, Division 1, Class 1,
07-11-77 Alternate Rules for Procedure
2, 3  
07-01-81 Qualification Base Material Orientation, Section III, Divi sion 1, Class 2 and 3 Construc tion N-184
1/01/78
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, Divi sion 1, Class 3 Flange and Socket Weld End Valves
1.84-10
d


Rev. 35 of RG 1.84, Page 27
N-196-1 01-08-79 Exemption from the Shake
4.
01-21-82 down Requirements When
01-21-85 Plastic Analysis is Performed
01-21-88 for Section III, Division 1,
12-03-90 Class 1 and CS Construction
07-01-92 N-199
03-20-78 Intervening Elements, Section
01-01-81 III, Division 1, Classes 1, 2, 3 and MC Component Construc tion Code Case N-199 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The applicant should provide in formation 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.


Annulled Conditionally Acceptable Section III Code Cases
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 N-237-2 05-25-83
07-30-86
12-07-87
07-01-88 Alternate Rules for Fabrication Welding SB-148 Alloy CDA
954 for Section III, Division 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 Hydrostatic Testing of Internal Piping, Section III, Division 1, Classes 2 and 3
1693 (N-212)
03-20-78 Welding Procedure Qualifica
01-01-81 tion of Dissimilar Metal Welds When "Buttering" 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-21515
05-15-78 Integrally Finned Titanium
05-15-81 Tubes, Section III, Division 1, Class 3 Construction N-217-1 01-07-80
09-07-82
12-05-84
09-05-85
02-23-87 N-220
08-28-78
07-13-84
07-13-81 Postweld Heat Treatment of Weld Deposit Cladding on Classes 1, 2, 3, MC, and CS
Items, Section III, Division 1 Code Effective Date for Com ponent Supports, Section III,
Division 1 N-226
11-20-78 Temporary Attachment of
01-01-80 Thermocouples, Section III,
Division 1, Class 1, 2 and 3 Component Construction
15Code Case N-215 was annulled effective May 15,1981. It was removed from the active Code Case listing with Revision 29 of Regulatory Guide
1.84.


The Code Cases listed in Table 4 were conditionally approved by the NRC but were subsequently annulled by the ASME.
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 fol lowing conditions in addition to those conditions speci fied in the Code Case: The furnace brazing process pro cedure qualification should include a verification for nonsensitization as given in ASTM A 262-70, Practic es A or E, or ASTM A 708-74 whenever materials sub ject to sensitization are to be brazed. Documentation is required that a nonsensitizing brazing procedure was employed for valves produced to this Case.


Table 4.  Annulled Conditionally Acceptable Section III Code Cases
N-247
07-09-79
01-21-82
01-21-85
01-21-88
03-14-91
04-30-93 Certified Design Report Sum mary for Component Standard Supports, Section III, Division
1, Class 1, 2, 3 and MC
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 fol lowing conditions in addition to those conditions speci fied in the Code Case: The applicant should indicate in the Safety Analysis Report the application, the mate rial, and the material thickness to which the strain gage or thermocouple will be attached by CD welding.


Code Case Number Table 4 Annulled Conditionally Acceptable Section III Code Cases Annulment Date Title/Condition N-11-5
1.84-11
(1414-5)
High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels
8/29/80
The information required to be developed by Note 1 in the Code Case should be provided in each referencing safety analysis report.


N-31-1 Elastomer Diaphragm Valves, Section III, Division 1, Classes 2 and 3
N-260-2
7/01/93 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 manufacturer=s recommended service life.  This recommended service life should not exceed 1/3 of the minimum cycle life as established by the requirements of paragraph 3 of the Code Case.  In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.
12-05-85 Weld Repair of SA-182 Type
12-05-88
316 Forgings, Section III, Divi sion 1, Classes 1, 2, 3, and MC
Code Case N-260-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Type 308 L welding materials should not be used to repair grade F 316 N forgings be cause of the difference in strength levels.


N-32-4 Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III, Division 1 Construction
N-261
3/16/84 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-
05-15-80
6129, AProvisions 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 3/8" nominal wall thickness or less.
Weld Procedure Qualification
12-13-82 for Materials with Impact Re quirements for Section III, Di vision 1, Class 3 Construction N-262
01-07-80
09-07-82
09-05-85
07-27-88
03-14-91
07-27-91 Electric Resistance Spot Weld ing for Structural Use in Com ponent Supports, Section III,  
Division 1 N-263
03-17-80 Alternate Thread Forms, Series
03-17-83 and Fits for Component Sup ports, Section III, Division 1 Code Case N-263 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case. The following information should be provided in the Safety Analysis Report: (1) a description of the application, (2) a need for the use of the Code Case, and (3) a demonstration that support de sign will withstand maximum conditions of loading with the worst combination of thread tolerance.


Paragraph (1) contains an additional requirement to the Code. It was, therefore, acceptable but unnecessary to include in the Code Case.
N-271
03-17-80 Simplified Method for Analyz
02-14-86 ing Flat Face Flanges with Metal to Metal Contact Outside the Bolt Circle for Section III,
Class 2, 3, and MC Construc tion N-272
05-15-80
Compiling Data Report Forms,
01-01-82 Section III, Division 1 N-275
05-15-80
12-07-82
12-31-83 Repair of Welds, Section III,
Division 1 Code Case N-275 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Use of the Code Case is applica ble 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 removal of examination material. If an indication is removed and weld-metal layers still remain, it is not ac- ceptable to gouge through the wall in order to qualify for use of the Code Case. Instead, examination of the cavity is required when such an indication has been re moved.


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.
N-276
03-17-80
02-14-83
02-14-86 N-279
05-15-80
07-13-81 Welding of SA-358 Pipe, Sec tion III, Division 1 Use of Torquing as a Locking Device for Section III, Division
1, Class 1, 2, 3, and MC Com ponent Supports Code Case N-279 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: When torquing or other preload ing is used as a locking device and the joint is later unloaded or disassembled, the bolting should be re placed unless it can be demonstrated or proved to the authorized nuclear inspector that the original bolting has not been permanently strained.


N-92
N-280
(1698)
05-15-80 Alternate Rules for Examina
Waiver of Ultrasonic Transfer Method, Section III, V, and VIII,  
07-01-81 tion of Welds in Section III,
Division 1  
Class 3 Storage Tanks N-281
7/13/81 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 grouping may be used for the fabrication of calibration blocks if adjustments to signal height can be made to compensate for sound beam attenuation difference between the calibration block and the material under examination by following the transfer method procedure of T-535.1(d), Article 5, Section V, ASME BPV Code, 1977 Edition.
05-15-80
Welding Operator Performance
07-01-81 Qualification, Section III, Divi sion 1 N-282
05-15-80
05-25-83
07-30-86
07-30-89 Nameplates for Valves, Section III, Division 1, Class 1, 2, and  
3 Construction N-300
11-17-80
Pressure-Temperature Ratings,  
12-01-83 Hydrostatic Tests, and Mini mum 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 En
05-11-84 gagement, Section III,
Division 1 Code Case N-314 was acceptable subject to the fol lowing conditions in addition to those conditions speci fled 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 estab lish thread engagement.


Rev. 35 of RG 1.84, Page 28 Code Case Number Table 4 Annulled Conditionally Acceptable Section III Code Cases Annulment Date Title/Condition N-100
1.84-12 d
(1711)
Pressure Relief Valve Design Rules, Section III, Division 1, Class 1, 2 and 3
1/01/83 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 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 valves.


(2)
N-316
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.
12-11-81
09-17-84
09-17-87
08-14-90
08-14-93 N-320
07-13-81
12-31-83 N-328
12-11-81
09-17-84
09-17-87 N-336
06-17-82 Examination of Welds Inacces
06-30-83 sible 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
05-19-85
02-23-87
07-01-88 N-346
06-17-82
05-19-85
06-30-86 Certification of Level III NDE
Examiner, Section III, Division
1 and 2 Explosive Welding, Section III,
Division 1 N-347
12-07-82 Continuous Electric Resistance
12-13-85 Seam Welding of P-No. 8 Ma terials for Component Sup ports, 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, Section III, Division 1 Code Case N-350 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants wishing to use this Case for other than P-1 materials should demonstrate that the use of this Case will not adversely affect the re quired material properties.


N-106-2  
N-357
(1720-2)
12-13-82
Weld End Preparation for Section III, Division 1 Construction
05-19-85
8/14/93 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.
07-01-88 Certification of Material for Component Supports, Section III, Division 1, Subsection NF
N-359
12-13-82 Weld Connection for Coaxial
12-31-84 Cylinders, Section III, Division
1, Class 1 N-362-2  
07-12-84
04-05-87
07-27-87
07-01-88 Pressure Testing of Contain ment Items, Section III,
Division 1, Classes 1, 2, and MC
Alternate Rules for Fillet Weld Dimensions for Socket Welded Fittings, Section III, Division
1, Class 1, 2, and 3 Alternate PWHT for SA-487, Grade CA6NM, Section III,
Division 1 Thermit Brazing or Welding of Nonstructural Attachments, Section III, Division 1 N-412
04-15-85
04-15-88
04-15-91 Alternative Rules for Witness ing the Piping System Pressure 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-414
02-20-86
02-20-89
02-20-92 Tack Welds for Class 1, 2, 3 and MC Components and Piping Supports, Section III,
Division 1
1.84-13 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 Auste
09-05-85 nitic Forgings, Section III, Di vision 1, Classes 1, 2, and 3 Code Case N-383-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Applicants who apply the pro visions of this Case to permit material manufacturers to weld repair austenitic forgings 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-110
N-397
(1727)
02-20-84 Alternative Rules to the Spec
Alternate Test Fluids, Section III, Division 1  
02-20-87 tral Broadening Procedures of N-1226.3 for Classes 1, 2, and
1/01/79 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.
3 Piping, Section III,  
Division 1 Code Case N-397 was acceptable subject to the fol lowing condition in addition to those conditions speci fied 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, "Devel opment of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Compo nents."


N-116
N-421
(1734)
02-14-85 Brazing Using a Radiant
Weld Design for Use for Section III, Division 1, Class 1, 2, 3 and MC  
05-19-85 Energy Source, Section III,  
Construction of Component Supports  
06-30-86 Division 1 N-430
1/01/78 If the configuration of Figure 1 of the Code Case is used for Class 1 and MC
02-28-86 Alternative Requirements for
components supports, full penetration welds should be used.  The application of the configuration shown in Figures 2 and 3 should be restricted to the welding of cans for spring encapsulation in spring hangers. In Figure 3, the length of the leg of the fillet weld adjacent to the plate should be equal to the thickness of the exposed edge of the plate; also, the leg of the fillet weld adjacent to the shell should be equal to the thickness of the exposed end of the shell.
02-28-89 Welding Workmanship and
02-05-92 Visual Acceptance Criteria for
07-01-93 Class 1, 2, 3 and MC Linear Type and Standard Supports, Section III, Division 1 Code Case N-430 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: (1) The applicant should demon strate 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) should be replaced with the following: "For material 3/8 in. and less nominal thick ness, undercut depth of 1/32 in. on one side of the mem ber 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."
N-442
02-23-87
04-30-90
03-08-92
1977 Addendum to ANSI/
ASME PTC 25.3-1976, Safety and Safety Relief Valves, Class
1, 2, 3, and MC, Section III,
Division 1


N-146-1
===3. REVISED CODE CASES ===
(1780-1)
Code Cases that were endorsed by the NRC in a prior version of this guide and were superseded by re vised Code Cases on or after July 1, 1974, should be considered as not endorsed as of the date of the ASME
Hydrostatic Testing and Stamping of Components, Section III,
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, 16 and title.
Division 1, Construction
1/01/82 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 piping reaction loadings be simulated in the hydrostatic testing.


N-175
150817
(1818)
12-13-71 Allowable Stresses, Design
Welded Joints in Component Standard Supports, Section III, Division 1  
06-30-75 Intensity and/or Yield Strength Values, Section I, III, and VIII,
7/01/79 That portion of the unwelded housing that is limited to 90E maximum should include a minimum of two sectors that are uniform in length.
Divisions 1 and 2
1516-1
06-25-73 Welding of Seats in Valves for
08-11-75 Section III Applications
16Earlier date-date Code Case was approved by ASME; later dates date revision of Code Case was approved by ASME.


N-199 Intervening Elements, Section III, Division 1, Classes 1, 2, 3 and MC
17Code Case 1508 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceptable listing.
Component Construction
1/01/81


Rev. 35 of RG 1.84, Page 29 Code Case Number Table 4 Annulled Conditionally Acceptable Section III Code Cases Annulment Date Title/Condition 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.
1539
11-06-72 (N-30-1) 11-21-77 Metal Bellows and Metal Dia 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 (N-31)
01-14-77
01-07-80
02-14-83
07-18-85 Elastomer Diaphragm Valves, Section III, Class 2 and 3 Code Case 1540-2 (N-31) was 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 referenc ing Safety Analysis Report that the service life of the elastomer diaphragm should not exceed the manufac turer's recommended service life. This recommended service life should not exceed 1/3 of the minimum cycle life as established by the requirements of paragraph 3 of the Code Case. In addition, the service life of the elasto mer diaphragm should not exceed 5 years, and the com bined service and storage life of the elastomer dia phragm should not exceed 10 years.


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
1541-1  
1/01/82 The furnace brazing process procedure qualification should include a verification for nonsensitization as given in ASTM A 262-70, AStandard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels@ (Ref. 5), Practices A or E, or ASTM A 708-74, APractice for Detection of Susceptibility to Intergranular Corrosion in Severely Sensitized Austenitic Stainless Steels@ (Ref. 6), whenever materials subject to sensitization are to be brazed.  Documentation is required that a nonsensitizing brazing procedure was employed for valves produced to this Case.
08-13-73 Hydrostatic Testing of Em
 
09-30-76 bedded Class 2 and Class 3 Piping for Section III  
N-242-1 Materials Certification, Section III, Division 1, Classes 1, 2, 3, MC, and CS
Construction  
Construction  
6/30/84 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.
1541-2
 
09-30-76 Hydrostatic Testing of Em
N-252 Low Energy Capacitive Discharge Welding Method for Temporary or Permanent Attachments to Components and Supports, Section III, Division 1, and XI
05-15-78 bedded Class 2 and Class 3 Piping for Section III, Division  
7/01/82 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 Construction
 
1552
N-260-2 Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1, Classes 1, 2,
12-18-72 Design by Analysis of Section
3, and MC
08-29-77 III, Class 1 Valves
12/05/88 Type 308L welding materials should not be used to repair grade F 316 N
1553
forgings because of the difference in strength levels.
12-18-72 Upset Heading and Roll
 
03-03-75 Threading of SA-453 for Bolt ing, Section III  
N-263 Alternate Thread Forms, Series and Fits for Component Supports, Section III,  
1555
Division 1
12-18-72 Certification of Safety Relief
3/17/83 The following information should be provided in the safety analysis report:
01-14-77 Valves on Liquids
(1)
1606
a description of the application,  
11-05-73
(2)
12-16-74 Stress Criteria for Section III,  
a need for the use of the Code Case, and
Class 2 and 3 Piping Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1606 was acceptable subject to the in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.
(3)
a demonstration that support design will withstand maximum conditions of loading with the worst combination of thread tolerance.


N-274 Alternative Rules for Examination of Weld Repairs for Section III, Division 1 Construction
1.84-14 L
6/30/86 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 according to Section XI requirements.
L


Rev. 35 of RG 1.84, Page 30
1607
Code Case Number Table 4 Annulled Conditionally Acceptable Section III Code Cases Annulment Date Title/Condition N-275 Repair of Welds, Section III, Division 1
11-05-73 Stress Criteria for Section III,
12/31/83 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 removal of examination material. If an indication is removed and weld-metal layers still remain, it is not acceptable to gouge through the wall in order to qualify for use of the Code Case.  Instead, examination of the cavity is required when such an indication has been removed.
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 "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.


N-279 Use of Torquing as a Locking Device for Section III, Division 1, Class 1, 2, 3, and MC Component Supports
1609-1 (N-55)
7/13/81 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.
1621-2 (N-62-2)
03-01-76
08-28-78
07-13-81
04-05-84
05-25-77
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 subject to the following condition in addition to those condi tions specified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.


N-292 Depositing Weld Metal Prior to Preparing Ends for Welding, Section III,
N-62-3  
Division 1, Class 1, 2, and 3  
07-18-85 Internal and External Valve
2/20/04 Class 3 piping that is longitudinally welded and that has a weld efficiency factor of 1.0 as selected from Table ND-3613.4-1, AWeld Joint Efficiency Factor,@
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 conditions spe cified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the pro visions of NCA 4000.
must receive a 100 percent volumetric examination (RT or UT) of the deposited weld metal in accordance with the requirements of ND-5000, AExamination.@
N-310-1 Certification of Bolting Materials, Section III, Division 1, Class 1, 2, 3, MC and CS
7/01/82 Each applicant who applies the Code Case should indicate in the referencing port safety analysis report:  
(1)
in what way the bolting does not meet NCA-3800 (or NA-3700),  
(2)
where the bolting will be used in the plant, and
(3)
how it will be shown that the bolting material properties required by the equipment support design specification are present in the actual bolting material.


N-314 Alternate Rules for Thread Engagement, Section III, Division 1  
N-62-4
5/11/84 Applicants should identify in their safety analysis report:  
09-05-85 Internal and External Valve
(1)
07-27-88 Items, Section III, Division 1,
the minimum length of thread engagement and  
07-24-89 Class 1, 2 and 3 Code Case N-62-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the pro visions of NCA 4000.
(2)
the procedure used to establish thread engagement.


N-348 N-348-1 N-348-2 Use of SA-574 Socket Weld Head Cap Screws, Section III, Division 1  
N-62-5 - 07-24-89 Internal and External Valve
9/7/85
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 conditions spe cified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the pro visions of NCA 4000.
2/20/89
8/14/93 Applicants should justify in their safety analysis reports why use of these socket head cap screws will not result in early failure from stress corrosion cracking.


N-350
N-62-6
Postweld Heat TreatmentBThickness of Material, Section III, Division 1  
12-11-89
9/05/85 Applicants wishing to use this Code Case for other than P-1 materials should demonstrate that the use of this Code Case will not adversely affect the required material properties.
12-11-92
05-11-94 Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 Code Case N-62-6 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet in the provisions of NCA 4000.


Rev. 35 of RG 1.84, Page 31 Code Case Number Table 4 Annulled Conditionally Acceptable Section III Code Cases Annulment Date Title/Condition N-383-1 Weld Repair of SA-182 Austenitic Forgings, Section III, Division 1, Classes 1,
1630
2, and 3
(N-77)
9/5/85 Applicants who apply the provisions of this Code Case to permit material manufacturers to weld repair austenitic forgings without resolution heat treatment should provide justification to the NRC staff (via the safety analysis report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.
11-04-74 External Pressure Charts for
07-10-78 High Yield Strength Carbon Steels and Low Alloy Steels.


N-397 Alternative Rules to the Spectral Broadening Procedures of N-1226.3 for Classes 1, 2, and 3 Piping, Section III, Division 1  
(Yield strength above 38 Ksi to  
2/20/87 The Code Case is acceptable for specific plant applications on a case-by-case basis pending revision of Regulatory Guide 1.122, ADevelopment of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components@ (Ref. 7).
60 Ksi Inclusive.) For Section III, Class 1, 2, 3, and MC; and Section VIII, Division 1 and 2
N-398 Reporting of Charpy-V Notch Test Results, Section III, Division 1  
1683
2/20/87 The Code Case is not acceptable to 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 case is applied for review on a case-by-case basis.
03-03-75
03-01-76 Bolt Holes for Section III, Di 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 fol lowing condition in addition to that specified in the Code Case: The alternate postweld heat treatment should be prequalified along with the applicable weld ing procedure in accordance with ASME Section IX.


N-404 Annealed Alloy UNS N06625 Over UNS N06600 Bimetallic Tubing, Section III, Division 1, Class 1  
1695
12/11/95 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 inches of the specified design wall thickness.
04-28-75 Brazing, Section III, Class 3
11-03-75
1701
06-30-75 Determination of Capacities of
03-20-78 Vacuum Relief Valves, Section III, Class MC
1701-1
03-20-78 (N-95-1) 03-19-79
07-09-79
1702
06-30-75
07-11-77 Determination of Capacities of Vacuum Relief Valves, Section III, Division 1 and 2, Class MC
Flanged Valves Larger than 24 inches for Section III, Class 1,
2 and 3 Construction
1.84-15


N-411-1 Alternative Damping Values for Response Spectra Analysis of Class 1, 2, and 3 Piping, Section III, Division 1  
1720
5/05/00
08-11-75 Weld End Preparation for Sec
(1)
03-01-76 tion III, Division 1 Construc tion Code Case 1720 was acceptable subject to the fol lowing condition in addition to those conditions speci fied 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.
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, ADamping Values for Seismic Design of Nuclear Power Plants@ (Ref. 8), are to be used.]
(2)
The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been employed.
 
Such use is to be limited only to response spectral analyses [similar to that used in the study supporting its acceptance, NUREG/CR-3526, AImpact of Changes in Damping and Spectrum Peak Broadening on the Seismic Response of Piping Systems@ (Ref. 9)].  The acceptance of the use with other types of dynamic analyses (e.g., time-history analyses or independent support motion method) is pending further justification.
 
(3)
When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and on- line mounted equipment should be checked.
 
(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).  
N-411-1 (contd)
Alternative Damping Values for Response Spectra Analysis of Class 1, 2, and 3 Piping, Section III, Division 1
5/05/00
(5)
This Code Case is not applicable to piping in which stress corrosion


Rev. 35 of RG 1.84, Page 32 Code Case Number Table 4 Annulled Conditionally Acceptable Section III Code Cases Annulment Date Title/Condition cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.
1720-1
03-01-76 Weld End Preparation for Sec
11-20-78 tion III, Division 1 Construc tion Code Case 1720-1 was acceptable subject to the following condition in addition to those conditions spe cified 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.


N-430
1739-2
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
08-28-78 Pump Internal Items, Section (N-119-2) 08-25-80
7/01/93
III, Division 1, Class 1, 2, and 3
(1)  
1739-3
The applicant should demonstrate that the applicable supports are not subject to cyclic loading in excess of 20,000 cycles; and
08-25-80
(2)
(N-119-3) 12-01-80
The first sentence of 3.0(f)(1) should be replaced with the following: AFor 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 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.@
Pump Internal Items, Section III, Division 1, Class 1, 2, and 3
1361-2 Socket Welds, Section III
1739-4
3/01/79 Code Case 1361-2 was acceptable when used in connection with Section III,
12-01-80 Pump Internal Items, Section (N-119-4) 02-20-8414111, Division 1, Class 1, 2,  
paragraph NB-3356, Fillet Welds.
07-18-85 and 3 N-119-5 07-18-85
 
09-05-85
1412-4 Modified High Yield Strength Steel for Section III, Division 1, Class 1 Vessels
03-01-76
1/01/77 The information required to be developed by Note 1 in the Code Case should be provided in each referencing safety analysis report.  The material given in the Inquiry section of the Code Case should be SA-508, Class 4b, instead of SA-508, Class 4.
01-08-79
 
01-21-82
1423-2 Wrought Type 304 and 316 with Nitrogen Added, Sections I, III, VIII,    
01-21-85
Division 1 and 2
01-21-88
7/01/77 Code Case 1423-2 was acceptable subject to compliance with the recommendations contained in Regulatory Guide 1.31, AControl of Ferrite Content in Stainless Steel Weld Metal@ (Ref. 10), and Regulatory Guide 1.44, AControl of the Use of Sensitized Stainless Steel@ (Ref. 11).
07-24-89
1521-1 Use of H-Grades of SA-240, SA-479, SA-336, and SA-358, Section III
1761
1/01/78 Code Case 1521-1 was acceptable subject to compliance with the recommendations contained in Regulatory Guide 1.31, AControl of Ferrite Content in Stainless Steel Weld Metal@ (Ref. 10), and Regulatory Guide 1.44, AControl of the Use of Sensitized Stainless Steel@ (Ref. 11).
04-26-76
1528-3 High Strength Steel SA-508, Class 2 and SA-541, Class 2 Forgings, Section III, Class 1 Components
01-14-77
1/01/78 The information required to be developed by Note 1 in the Code Case should be provided in each referencing safety analysis report.
01-14-77
 
01-07-80
Rev. 35 of RG 1.84, Page 33 Code Case Number Table 4 Annulled Conditionally Acceptable Section III Code Cases Annulment Date Title/Condition
04-02-82 N-133-1  
1569 Design of Piping for Pressure Relief Valve Station, Section III
04-02-82
7/01/79 Code Case 1569 was acceptable subject to compliance with the recommendations contained in Regulatory Guide 1.67, AInstallation of Over- Pressure Protection Devices@ (Ref. 12).
05-19-85 Pump Internal Items, Section III, Division 1, Class 1, 2, and 3 Stress Indices for Structural Attachments, Class 1, Section III, Division 1 Use of SB-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves Use of SB-148 Alloy CA954, Section III, Division 1, Class 3 Use of SB-148 Alloys 952 and  
1606-1 Stress Criteria Section III, Classes 2 and 3 Piping Subject to Upset, Emergency, and Faulted Operating Conditions
954, Section III, Division 1, Class 3 N-133-2 05-19-85 Use of SB-148 Alloys 952 and  
7/01/77 Code Case 1606-1 was acceptable subject to the interpretation that the stress limit designations of AUpset,@ AEmergency,@ and AFaulted@ do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.  These designations should be established and justified in the design specifications.
07-18-85
 
954 Section III, Division 1, Class 3  
1607-1 Stress Criteria for Section III, Classes 2 and 3 Vessels Designed to NC/NC-3300 Excluding the NC-3200 Alternate
1769
7/01/77 Code Case 1607-1 was acceptable subject to the interpretation that the stress limit designations of AUpset,@ AEmergency,@ and AFaulted@ do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.  These designations should be established and justified in the design specifications.
08-13-76 Qualification of NDE Level III  
 
02-16-77 Personnel, Section III,  
1635-1 Stress Criteria for Section III, Class 2 and 3 Valves Subjected to Upset, Emergency, and Faulted Operating Conditions
7/01/77 Code Case 1635-1 was acceptable subject to the interpretation that the stress limit designations of AUpset,@ AEmergency,@ and AFaulted@ do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.  These designations should be established and justified in the design specifications.
 
1636-1 Stress Criteria for Section III, Class 2 and 3 Pumps Subjected to Upset, Emergency, and Faulted Operating Conditions
7/01/77 Code Case 1636-1 was acceptable subject to the interpretation that the stress limit designations of AUpset,@ AEmergency,@ and AFaulted@ do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.  These designations should be established and justified in the design specifications.
 
1689-1 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
1/01/78 The alternate postweld heat treatment should be prequalified along with the applicable welding procedure in accordance with ASME Section IX.
 
Rev. 35 of RG 1.84, Page 34 Code Case Number Table 4 Annulled Conditionally Acceptable Section III Code Cases Annulment Date Title/Condition
1783-1 Qualification of Nondestructive Examination Personnel, Section III,  
Division 1  
Division 1  
1/01/79 The first sentence of paragraph (1) should be replaced with the following: AThe 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.@
1774
08-13-76 Minimum Wall Thickness for
07-11-77 Class 2 and 3 Valves, Section III, Division 1  
1780
09-10-76 Hydrostatic Testing and Stamp
03-10-78 ing of Pumps for Class 1 Construction, Section III, Divi sion 1 Code Case 1780 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: Each licensing application in which the Code Case is to be used should present infor mation that satisfactorily demonstrates that the subas sembly tests adequately simulate the pressure loadings.


Rev. 35 of RG 1.84, Page 35
Also, the closure fixture for the test subassembly should adequately simulate the rigidity of adjacent sub assemblies and also simulate the interface loadings from adjacent subassemblies that would result from a hydrostatic pressure test of a complete pump assembly.
5.


Code Cases Superseded by Revised Code Cases
As a minimum, the closure fixture should impose loads that result in stresses equal to or greater than those in duced during the hydrostatic test of a complete pump assembly. It is not intended that piping reaction load ings be simulated in the hydrostatic testing.


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: Code Cases listed without conditions were unconditionally approved for use by the NRC.
1783
09-10-76 Qualification of Nondestructive
01-14-77 Personnel, Section III,
Division 1 Code Case 1783 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The first sentence of paragraph
(1) should be replaced with the following: "The certifi cation of the Level III nondestructive examination per sonnel 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 Holder, then the verification of such certificate is the responsi bility of the Certificate Holder."
1791
03-17-8018 Projection Resistance Welding (N-154)
09-09-82 of Valve Seats, Section III,
09-05-85 Division 1, Class 1, 2 and 3
12-05-85 Valves
18The Code Case was annulled on January 14, 1980 (ASME mandatory annulment date). It was reinstated on March 17,1980. Because of the cir cumstances 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.


Table 5. Section III Code Cases That Have Been Superseded by Revised Code Cases on or after July 1, 1974
1.84-16
1745 (N-122)
1761-1 (N-133)


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
1797 (N-160)
(1337-11)
03-23-77 Finned Tubing for Construc
Special Type 403 Modified Forgings or Bars, Section III, Division 1, Class 1 and CS
03-17-80 tion, Section III, Division 1  
1/12/05 N-5
09-07-82
(1344-5)
07-18-85 N-192
Nickel-Chromium, Age-Hardenable Alloys (Alloy X750), Section III
01-09-78 Use of Flexible Hose for Sec
12/13/82 N-7
08-30-79 tion III, Division 1, Class 1, 2, and 3 Construction Code Case N-192 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case. The applicant should indicate 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 re quired to be furnished with the application.
(1358-5)
High Yield Strength Steel, Section III, Division 1, Class 1 Vessels
12/13/82 The information required to be developed by Note 1 in the Code Case should be provided in each referencing safety analysis report.


N-20
N-192-1
(1484-3)
08-30-79 Use of Flexible Hose for Sec
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  
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 conditions specified in the Code Case: The applicant should indi cate system application, design and operating pressure, and pressure-temperature rating of the flexible hose.
9/05/85


12/07/87 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
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.
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
7/18/85 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 manufacturer=s recommended service life.  This recommended service life should not exceed 1/3 of the minimum cycle life as established by the requirements of paragraph 3 of the Code Case.  In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.


N-55
N-196
(1609-1)
01-09-78 Exemption from the Shake
Inertia and Continuous Drive Friction Welding, Section I, III, IV, VIII,  
01-08-79 down Requirements When Plastic Analysis is Performed for Section III, Division 1, Class 1 Construction N-214
Division 1 and 2, and IX
05-15-78
4/05/84 N-60
07-13-81
(1618-2)
09-07-82 Use of SA-351, Grade CN7M,  
N-60-1  
for Valves for Section III, Divi sion 1, Construction N-214-1 09-07-82 Use of SA-351 Grade CN7M,
05-25-83 for Valves, Section III, Divi sion 1 N-237
07-09-79
01-21-82
09-07-82 Hydrostatic Testing of Internal Piping, Section III, Division 1 N-237-1
09-07-82 Hydrostatic Testing of Internal
05-25-83 Piping, Section III, Division 1, Classes 2 and 3 N-260
01-07-80
05-25-83
07-18-85 Weld Repair of SA-182 Type
316 Forgings, Section III, Divi sion 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, Divi sion 1, Classes 1, 2, 3,and MC
Code Case N-260-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Type 308 L welding materials should not be used to repair grade F 316 N forgings be cause of the difference in strength levels.


Material for Core Support Structures, Section III, Division 1, Subsection NG
N-304
5/25/83
06-11-81
04-05-84
07-12-84 Use of 20Cr-25Ni-6Mo (Alloy UNS N08366) Welded Tubes 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 1, Classes 2 and 3 Construction N-304-2
05-19-85 Use of SB-676 20Cr-25Ni-6Mo
12-05-85 (Alloy UNS N08366) Welded Tubes, Section III, Division 1, Classes 2 and 3 N-304-3 12-05-85 Use of SB-676 2OCr-25Ni-6Mo
02-23-87 (Alloy UNS N08366) Plate, Sheet, Strip and Welded Pipes, Section III, Division 1, Classes
2 and 3 N-309
09-17-8419 Identification of Materials for
12-05-85 Component Supports, Section SIII, Division 1 N-318
07-13-81 Procedure for Evaluation of the
02-20-84 Design of Rectangular Cross Section Attachments on Class
2 or 3 Piping, Section III, Divi sion 1 Code Case N-318 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug at tachment, (2) the piping system involved, and (3) the location in the system where the Case is to be applied.


9/17/84 Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition.
N-318-1 20 02-20-84 Procedure for Evaluation of the
07-12-84 Design of Rectangular Cross Section Attachments on Class
2 or 3 Piping, Section III, Divi sion 1
19The Code Case was annulled on May 11, 1984 (ASME mandatory an nulment date). It was reinstated on September 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-60-2 N-60-3 N-60-4 Material for Core Support Structures, Section III, Division 1, Subsection NG
20 'he conditional acceptance was inadvertently omitted in Revision 23 of this guide.
9/05/85
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 the solution-treated condition.  For SA-479 material, the maximum yield strength should not exceed 90,000 psi in view of the susceptibility of this material to environmental cracking.


Rev. 35 of RG 1.84, Page 36 Code Case Number Table 5 Code Cases That Have Been Superseded by Revised Code Cases on or After July 1, 1974 Revision Date N-62-2
1.84-17
(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
7/18/85


9/05/85
Code Case N-318-1 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.
7/24/89
12/11/89
5/11/94 The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, AQuality Assurance,@ and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA-4000.


N-71-7
N-318-2 07-12-84 Procedure for Evaluation of the
(1644-7)
09-05-85 Design of Rectangular Cross Section Attachments on Class
N-71-8
2 or 3 Piping, Section III, Divi sion 1 Code Case N-318-2 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.
(1644-8)
Additional Materials for Component Supports, Section III, Division 1, Subsection NF,
Class 1, 2, 3 and MC Component Supports
5/15/78


1/07/80
N-318-3 09-05-85 Procedure for Evaluation of the  
The maximum measured ultimate tensile strength (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 and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demonstrated by the applicant that:  
07-27-88 Design of Rectangular Cross
(1)  
12-11-89 Section Attachments on Class
the impact test results for the material meet Code requirements and
2 or 3 Piping, Section III, Divi sion 1 Code Case N-318-3 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.
(2)  
the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present, and (b)  
the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.


N-71-9
N-318-4
(1644-9)
12-11-89 Procedure for Evaluation of the
Additional Materials for Component Supports Fabricated by Welding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports
12-11-92 Design of Rectangular Cross
5/11/81 In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, AAlternate 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.
04-28-94 Section Attachments on Class
2 or 3 Piping, Section III, Divi sion 1 Code Case N-318-4 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.


N-71-10
N-319
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
07-13-81
6/17/82
07-13-84
2/14/83 The maximum measured ultimate tensile strength (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 and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that:
07-13-87
(1)
07-24-89 N-319-1
the impact test results  for the material meet Code requirements and
07-24-89
(2)
08-14-90
the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present, and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.
Alternate Procedure for Evalu ation of Stresses in Butt Weld Elbows in Class 1 Piping, Sec tion III, Division 1 Alternate Procedure for Evalu ation of Stresses in Butt Weld Elbows in Class 1 Piping, Sec tion III, Division 1 N-345
06-17-82 Attachment of AMS 5382
12-13-82 Alloy 31 Seat Rings by Fric tion Welding, Section III, Divi sion 1, Classes 1, 2, and 3 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 Auste
07-18-85 nitic Forgings, Section III, Di vision 1, Classes 1, 2, and 3 Code Case N-383 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants who apply the provi sions of this Case to permit material manufacturers to weld repair austenitic forgings without resolution heat treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.


In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, AAlternate 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.
N-391
11-28-83 Procedure for Evaluation of the  
07-30-86 Design of Hollow Circular
07-24-89 Cross Section Welded Attach ments on Class 1 Piping, Sec tion III, Division 1 N-392
11-28-83 Procedure for Evaluation of the
07-30-86 Design of Hollow Circular
07-30-89 Cross Section Welded Attach
12-11-89 ments on Classes 2 and 3 Pip ing, Section III, Division 1 N-392-1
12-11-89 Procedure for Evaluation of the  
12-11-92 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 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.


Rev. 35 of RG 1.84, 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 N-71-12 Additional Materials for Component Supports Fabricated by Welding, Section III, Division 1, Class 1, 2, 3 and MC
N-411
2/20/84 The maximum measured ultimate tensile strength (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 and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that:  
09-17-84 Alternative Damping Values
(1)  
02-20-86 for Seismic Analysis of Classes
the impact test results for the material meet Code requirements and
1, 2, and 3 Piping Sections, Section III, Division 1 Code Case N-411 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: (1) The damping values specified
(2)
1.84-18 K
the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present, and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.


In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, AAlternate 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.  Paragraph 16.2.2 is not acceptable as written and should be replaced with the following: AWhen 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 1000EF (540EC)
may be used in analyzing piping response for seismic and other dynamic loads being filtered through build ing structures provided response mode frequencies are  
and should not exceed 1150EF (620EC) for Class 1 and Class 2 material and 1175EF
___
(640EC) for Class 3 material.  The new holding time at temperature for weld thickness (nominal) should be 30 minutes for 2 inch or less, 1 hour per inch for thickness over
limited to 33 Hz and below. Within this range, the Code Case damping should be used completely and consis tently, if used at all. (For equipment other than piping, the damping values specified in Regulatory Guide  
2 inch to 5 inches, and 5 hours plus 15 minutes for each additional inch over 5 inches.@
1.61, "Damping Values for Seismic Design of Nuclear Power Plants," should be used.) (2) The damping val ues 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 re sponse spectral analyses (similar to that used in the study supporting its acceptance-Reference NUREG/  
N-71-13 N-71-14 N-71-15 N-71-16 N-71-17 Additional Materials for Subsection NF, Classes 1, 2, 3 and MC Component Supports Fabricated by Welding, Section III, Division 1
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 recon ciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and on line mounted equipment should be checked. (4) This Code Case is not appropriate for ana lyzing the dynamic response of piping systems using supports designed to dissipate energy by yielding (i.e.,  
12/05/85
the design of which is covered by Code Case N-420).
12/16/86
(5) This Code Case is not applicable to piping in which stress corrosion cracking has occurred unless a case specific evaluation is made and is reviewed by the NRC  
2/12/93
12/31/96
12/08/00
The maximum measured ultimate tensile strength (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 and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that:
(1)
the impact test results for the material meet Code requirements, and
(2)
the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present, and (b)
the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.
 
Rev. 35 of RG 1.84, 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-71-13 N-71-14 N-71-15 N-71-16 N-71-17 (cont=d)
 
Additional Materials for Subsection NF, Classes 1, 2, 3 and MC Component Supports Fabricated by Welding, Section III, Division 1
12/05/85
12/16/86
2/12/93
12/31/96
12/08/00
In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, AAlternate 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.  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 post-weld heat treatment should be performed in accordance with NF-4622 except that for ASTM A-710 Grade A material, it should be at least 1000EF (540EC)
and should not exceed 1150EF (620EC) for Class 1 and Class 2 material and 1175EF
(640EC) for Class 3 material.  The new holding time at temperature for weld thickness (nominal) should be 30 minutes for 2 inch or less, 1 hour per inch for thickness over
2 inch to 5 inches, and 5 hours plus 15 minutes for each additional inch over 5 inches.
 
The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with Section 5.3.4 of NUREG-0800, AStandard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants@ (Ref. 13), or on a case-by-case basis.  The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, Class 2, and Class 3 component supports.
 
N-95-1
(1701-1)
Determination of Capacities of Vacuum Relief Valves, Section III, Division 1 and 2, Class MC
7/09/79 N-102-1
(1714-2)
Post-weld 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
 
12/01/80
 
7/18/85
 
9/05/85 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 N-154
(1791)
Projection Resistance Welding of Valve Seats, Section III, Division 1, Class 1, 2 and 3 Valves
7/18/85 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
1/01/78
 
Rev. 35 of RG 1.84, 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 N-192 N-192-1 N-192-2 Use of Flexible Hose for Section III, Division 1, Class 1, 2, and 3 Construction
8/30/79
9/16/81
7/23/02 The applicant should indicate 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.
 
N-196 Exemption from the Shake-down Requirements When Plastic Analysis is Performed for Section III, Division 1, Class 1 Construction
1/08/79 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-214 N-214-1 Use of SA-351, Grade CN7M, for Valves for Section III, Division 1, Construction
9/07/82
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 N-237 Hydrostatic Testing of Internal Piping, Section III, Division 1
9/07/82 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
4/10/80
Applicants should identify the components and supports requiring the use of paragraphs
1.0 through 4.0 of the Code Case in their safety analysis reports.
 
N-246 Use of SB-169 Alloy CA614, Section III, Division 1, Class 3
9/07/82 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
5/11/81 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 AReply.@
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
6/17/82 Paragraph 7 of the AReply@ should reference the requirements of NF-2600 instead of NF-2800.  This is a typographical error in that NF-2800 does not exist.
 
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
9/17/84
4/08/85 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, AStandard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants@ (Ref. 13), or on a case-by-case basis.
 
Rev. 35 of RG 1.84, 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-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
9/05/85
12/05/85
12/16/86
5/06/89
5/13/91
2/12/93
5/11/94
12/08/00
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 Section 5.3.4 of NUREG-0800,
AStandard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants@ (Ref. 13), or on a case-by-case basis.  The following is to be added to paragraph
(5) of the Code Case: AFor these cases, it should be demonstrated by the Owner that: (1)
the impact test results for the material meet Code requirements, and (2) the material is not subject to stress corrosion cracking by virtue of the fact that: (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.@
N-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
12/05/85 Type 308 L welding materials should not be used to repair grade F 316 N forgings because of the difference in strength levels.
 
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
10/02/00
This Code Case is listed in Regulatory Guide 1.193.
 
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
12/05/85
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
2/20/84
7/12/84
9/05/85
12/11/89
4/28/94 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 system where the Code Case is to be applied.
 
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
12/05/85 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
 
Rev. 35 of RG 1.84, 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-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 700EF 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 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
12/05/85 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
9/07/01
11/02/04 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
7/18/85 Applicants who apply the provisions of the Code Case to permit material manufacturers to weld repair austenitic forgings without resolution heat treatment should provide justification to the NRC staff (via the safety analysis report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.
 
N-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
8/24/95 The following typographical errors need to be corrected:
(1) In equation (3) the + sign should be changed to an = sign, and
(2) In equation (4) the first + sign should be changed to an = sign.
 
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
12/11/92 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 system where the Code Case is to be applied.
 
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
12/12/94 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 system where the Code Case is to be applied.
 
Rev. 35 of RG 1.84, 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 N-411 Alternative Damping Values for Seismic Analysis of Classes 1, 2, and 3 Piping Sections, Section III, Division 1
2/20/86
(1)
The damping values specified may be used in analyzing piping response for seismic and other dynamic loads being filtered through building structures provided response mode frequencies are limited to 33 Hz and below. Within this range, the Code Case damping should be used completely and consistently, if used at all. [For equipment other than piping, the damping values specified in Regulatory Guide 1.61 (Ref. 7), 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. 9)]. 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 on line mounted equipment should be checked.
 
(4)  
This Code Case is not appropriate for analyzing the dynamic response of piping systems using supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420).  
(5)  
This Code Case is not applicable to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC  
staff.
staff.


N-418 Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028 and UNS N08904)
N-453
Tubing, Section III, Division 1, Classes 2 and 3
12-07-87 Nickel-Chromium-Molybde
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  
11-30-88 num-Copper Stainless Steel (UNS N08925) Welded Pipe for Class 2 and 3 Construction, Section III, Division 1 N-453-1  
3/08/89 Reinstated on
11-30-88
5/24/96
12-16-91
7/27/92 N-438-3 UNS N08367 Material, Section III, Division 1, Class 2 and 3 Construction
04-30-92 N-454
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,
12-07-87
Division 1
12-03-90
7/10/00
04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925) Seamless and Welded Pipe for Class 2 and 3 Construction, Section III, Divi sion 1 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925) Wrought Fit tings for Class 2 and 3 Construction Section III, Divi sion 1 N-455
N-440
12-07-87
Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction, Section III, Division 1
12-03-90
7/10/00
04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925) Forged Flanges and Fittings for Class 2 and 3 Construction Section III, Divi sion 1
N-441 N-441-1 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction, Section III, Division 1
4. UNACCEPTABLE CODE CASES
11/25/92  
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. 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.
7/10/00
N-443 N-443-1 High Yield Strength Cr-Mo Steel, Class 1 Components, Section III, Division 1
3/08/89
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
 
Rev. 35 of RG 1.84, 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-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 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
3/05/90
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
12/09/93 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
12/09/93 N-510
Borated Stainless Steel for Class CS Core Support Structures and Class 1 Components, Section III, Division 1
12/12/94 N-520
Alternative Rules for Renewal of N-type Certificates for Plants Not in Active Construction, Section III, Division 1
10/26/94 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 N-580
Use of Alloy 600 With Columbium Added, Section III, Division 1
5/20/98 N-621 Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800EF, Section III, Division 1
11/02/04 N-625 Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800EF, Section III, Division 1
3/28/01 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
1332-6 Requirements for Steel Forgings, Section III and VIII, Division 1
1/08/79
1335-9 Requirements for Bolting Materials
8/28/78
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
1/08/79
1407-2 Time of Examination for Class 1, 2, and 3, Section III Vessels
7/01/74
1414-3
1414-4 High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels
3/1/76
8/9/77 The information required to be developed by Note 1 in the Code Case should be provided in each referencing safety analysis report.
 
1484-1 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600) at a Specified Minimum Yield Strength of 40.0 ksi, Section III, Class 1
11/04/74
 
Rev. 35 of RG 1.84, 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
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
3/03/75
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
3/03/75
1555 Certification of Safety Relief Valves on Liquids
1/14/77
1557-2 Steel Products Refined by Secondary Remelting
1/08/79
1606 Stress Criteria for Section III, Class 2 and 3 Piping Subjected to Upset, Emergency, and Faulted Operating Conditions
12/16/74 Code Case 1606 was acceptable subject to the interpretation that the stress limit designations of AUpset,@ AEmergency,@ and AFaulted@ do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.  These designations should be established and justified in the design specifications.
 
1607 Stress Criteria for Section III, Classes 2 and 3 Vessels Subjected to Upset, Emergency, and Faulted Operating Conditions
11/04/74 Code Case 1607 was acceptable subject to the interpretation that the stress limit designations of AUpset,@ AEmergency,@ and AFaulted@ do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems.  These designations should be established and justified in the design specifications.
 
1618 Material for Core Support Structures, Section III, Subsection NG
3/03/75 (a)
Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition.
 
(b)
Use of alloy ASTM A-564 Grade 631 is not acceptable on a generic basis.
 
1618-1 Material for Core Support Structures, Section III, Subsection NG
3/01/76 Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition.
 
1626 Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings, Section I, Section III, and Section VIII, Division 1 and 2
1/08/79
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
4/28/75
6/30/75
11/03/75
3/01/76 The maximum measured ultimate tensile strength of the component support material
 
Rev. 35 of RG 1.84, 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 should not exceed 170 ksi.
 
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
8/13/76
3/03/77
11/21/77 The maximum measured ultimate tensile strength (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 and, under this condition, the Design Specification should specify impact testing for the material.  For these cases, it should be demonstrated by the applicant that
(1)
the impact test results for the material meet code requirements, and
(2)
the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b)
the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.
 
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
3/01/76
1689 Alternate PWHT Time and Temperature for SA-182 Grade F22, Section III, Class 1, 2,
3 and CS
9/10/76 The alternate postweld heat treatment should be prequalified along with the applicable welding procedure in accordance with ASME Section IX.
 
1695 Brazing, Section III, Class 3
11/03/75
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 Post-weld Heat Treatment of P-1 Material, Section III, Class MC
7/11/77
1720
Weld End Preparation for Section III, Division Construction
3/01/76 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 Weld End Preparation for Section III, Division Construction
11/20/78 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.
 
1722 Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division 1, and VIII,
Division 1 and 2
1/08/79
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
5/15/78 Applicants using this Case should also use Code Case 1711 for the design of pressure relief valves.
 
Rev. 35 of RG 1.84, 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
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
3/10/78 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.  Also, the closure fixture for the test subassembly should adequately simulate the rigidity of adjacent subassemblies and also simulate the interface loadings from adjacent subassemblies that would result from 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.  It is not intended that piping reactor loadings be simulated in the hydrostatic testing.
 
1783 Qualification of Nondestructive Personnel, Section III, Division 1
1/14/77 The first sentence of paragraph (1) should be replaced with the following: AThe 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.@
 
Rev. 35 of RG 1.84, Page 47


==D. IMPLEMENTATION==
==D. IMPLEMENTATION==
The purpose of this section is to provide information to applicants and licensees regarding the NRC
The purpose of this section is to provide informa tion to applicants regarding the use of this regulatory guide.
staff=s plans for using this regulatory guide.  The requirements addressing implementation of Section III
Code Cases are contained in 10 CFR 50.55a(b)(4).  No backfit is intended or approved in connection with the issuance of this guide.
 
REGULATORY ANALYSIS
 
A separate regulatory analysis was not prepared for this regulatory guide.  The regulatory basis for this guide is the regulatory analysis prepared for the amendment to 10 CFR 50.55a, ACodes and Standards@
(Ref. 14), which incorporates this regulatory guide by reference.
 
Rev. 35 of RG 1.84, Page 48 REFERENCES2
 
1.


Code of Federal Regulations, Title 10, Energy, Part 50, ADomestic Licensing of Production and Utilization Facilities@ (10 CFR Part 50), U.S. Nuclear Regulatory Commission, Washington, DC.
1. Except for those Code Cases that have been an nulled by action of the ASME, the NRC staff has found the Code Cases listed in this regulatory guide under Regulatory Position 1 acceptable for ap propriate use. Other Code Cases may be considered for use in accordance with footnote 6 of the Codes and Standards rule, 10 CFR 50.55a.


2.
2. Components ordered to a specific version of a Code Case need not be changed because a subsequent re vision to the Code Case is listed as the approved version in this guide.
 
ASME Boiler and Pressure Vessel Code, Section III, ARules for Construction of Nuclear Power Plant Components,@ Division I, American Society of Mechanical Engineers, New York, NY.3


3.
3.


Paperwork Reduction Act of 1995 (Public Law 104-13), United States Code, Title 44, APublic Printing and Documents,@ Chapter 35, ACoordination of Federal Information Policy@
Components ordered to a Code Case that was pre viously approved for use need not be changed be cause the Code Case has been subsequently an nulled.
(44 U.S.C. 3501 et seq.), 104th Congress of the United States of America, Washington, DC.4
 
4.
 
Regulatory Guide 1.193, AASME Code Cases Not Approved for Use,@ U.S. Nuclear Regulatory Commission, Washington, DC.
 
5.
 
ASTM A 262-70, AStandard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels,@ American Society for Testing and Materials, West Conshohocken, PA.5
 
6.
 
ASTM A 708-74, APractice for Detection of Susceptibility to Intergranular Corrosion in Severely Sensitized Austenitic Stainless Steels,@ American Society for Testing and Materials, West Conshohocken, PA.
 
7.
 
Regulatory Guide 1.122, ADevelopment of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components,@ U.S. Nuclear Regulatory Commission, Washington, DC.
 
8.
 
Regulatory Guide 1.61, ADamping Values for Seismic Design of Nuclear Power Plants,@ U.S.
 
Nuclear Regulatory Commission, Washington, DC.
 
2 Publicly available NRC published documents are available electronically through the Electronic Reading Room on the NRCs public Web site at: http://www.nrc.gov/reading-rm/doc-collections/.  The documents can also be viewed on-line or printed for a fee in the NRCs Public Document Room (PDR) at 11555 Rockville Pike, Rockville, MD; the mailing address is USNRC PDR, Washington, DC 20555; telephone 301-415-4737 or (800) 397-4209; fax (301) 415-3548; and e-mail pdr.resource@nrc.gov.
 
3 Copies may be purchased from the American Society of Mechanical Engineers, Three Park Avenue, New York, NY 
10016-5990; phone (212) 591-8500; fax (212) 591-8501; www.asme.org.
 
4 The Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.) is available electronically through the Federal Register Web site administered by the U.S. National Archives and Records Administration, at http://www.archives.gov/federal- register/laws/paperwork-reduction/
 
5 Copies of ASTM standards may be purchased from the American Society for Testing and Materials, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, Pennsylvania  19428-2959; phone (610) 832-9585.  Purchase information is available through the ASTM Web site at http://www.astm.org.
 
Rev. 35 of RG 1.84, Page 49
9.
 
NUREG/CR-3526, AImpact of Changes in Damping and Spectrum Peak Broadening on the Seismic Response of Piping Systems,@ U.S. Nuclear Regulatory Commission, Washington, DC.
 
10. Regulatory Guide 1.31, AControl of Ferrite Content in Stainless Steel Weld Metal,@ U.S. Nuclear Regulatory Commission, Washington, DC.
 
11. Regulatory Guide 1.44, AControl of the Use of Sensitized Stainless Steel,@ U.S. Nuclear Regulatory Commission, Washington, DC.
 
12. Regulatory Guide 1.67, AInstallation of Over-Pressure Protection Devices,@ U.S. Nuclear Regulatory Commission, Washington, DC.
 
13.
 
NUREG-0800, AStandard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants (LWR Edition),@ Section 9.5.1, AFire Protection System,@ U.S. Nuclear Regulatory Commission, Washington, DC.
 
14.
 
Final Rule, AIncorporation by Reference of Regulatory Guide 1.84, Revision 35, and Regulatory Guide 1.147, Revision 16, into 10 CFR 50.55a,@ U.S. Nuclear Regulatory Commission, Washington, DC, July 2010.6
 
6 Copies of this final rule are available for inspection and copying for a fee at the NRCs Public Document Room (PDR),
which is located at 11555 Rockville Pike, Rockville, Maryland.  The PDRs mailing address is USNRC PDR,
Washington, DC 20555-0001.  The PDR can also be reached by telephone at (301) 415-4737 or (800) 397-4209, by fax at (301) 415-3548, and by email to PDR.Resource@nrc.gov.  In addition, the regulatory analysis is available electronically through the NRCs Agencywide Documents Access and Management System (ADAMS)
at http://www.nrc.gov/reading-rm/adams.html, under Accession No. ML100560131.
 
Appendix A to RG 1.84, Page A-1 APPENDIX A
 
SUPPLEMENTS ADDRESSED IN REVISION 35 OF REGULATORY GUIDE 1.84
 
Edition Supplement Number BNCS1 Approval Date of Code Cases in Supplement2
2004
2 August 4, 2004
2004
3 November 2, 2004
2004
4 January 12, 2005
2004
5 February 22, 2005
2004
6 July 5, 2005
2004
7 October 11, 2005
2004
8 March 28, 2006
2004
9 April 19, 2006
2004
10
July 14, 2006
2004
11 October 12, 2006
2007
0
January 10, 2007
1 BNCS = ASME Board on Nuclear Codes and Standards
2 Publication of supplements approximately 6 months after BNCS approval.
 
Appendix B to RG 1.84, Page B-1 APPENDIX B
 
NUMERICAL LISTING OF SECTION III CODE CASES IN
SUPPLEMENT 2 THROUGH SUPPLEMENT 11 TO THE 2004 EDITION,
AND SUPPLEMENT 0 TO THE 2007 EDITION7
 
N-4-12 N-7-1 N-284-2 N-373-3 N-570-1 N-572 N-595-48 N-621-1 N-6708 N-699 N-7078 N-725 N-727 N-7288 N-732 N-736 N-738 N-741 N-744 N-746 N-756 N-759
 
7 Except for those Code Cases pertaining to: high temperature gas-cooled reactors, Section III, Division 2, liquid metal, and submerged spent fuel waste casks.
 
8 Code Case is not acceptable for use; see Regulatory Guide 1.193 (Ref. 4).
 
Appendix C to RG 1.84, Page C-1 APPENDIX C
 
NUMERICAL LISTING OF SECTION III CODE CASE1 AND TABLE WHERE EACH CODE CASE IS LISTED
 
N-1-7 [T3] 
N-2 [T3]
N-3-10 [T3]
N-4-11 [T5]
N-4-12 [T1]
N-5 [T5]
N-5-1 [T3]
N-6 [T3]
N-7 [T5]
N-7-1 [T1]
N-9-4 [T3]
N-10 [T3]
N-11-5 [T4]
N-15 [T3]
N-17 [T3]
N-20 [T5]
N-20-1 [T5]
N-20-2 [T5]
N-20-3 [T5]
N-20-4 [T3]
N-22 [T3]
N-24 [T3]
N-26 [T3]
N-30-1 [T3]
N-31 [T5]
N-31-1 [T4]
N-32-3 [T3]
N-32-4 [T4]
N-33 [T3]
N-35-1 [T3]
N-37-3 [T3]
N-41 [T3]
N-43 [T3]
N-46 [T3]
N-47-33 [T3]
N-48-2 [T3]
N-49-4 [T3]
N-50-1 [T3]
N-51-2 [T3]
N-55 [T5]
N-55-1 [T3]
N-56 [T3]
N-60 [T5]
N-60-1 [T5]
N-60-2 [T5]
N-60-3 [T5]
N-60-4 [T5]
N-60-5 [T1]
N-61 [T3]
N-62-2 [T5]
N-62-3 [T5]
N-62-4 [T5]
N-62-5 [T5]
N-62-6 [T5]
N-62-7 [T2]
N-65-1 [T3]
N-66-1 [T3]
N-68 [T3]
N-71-7 [T5]
N-71-8 [T5]
N-71-9 [T5]
N-71-10 [T5]
N-71-11 [T5]
N-71-12 [T5]
N-71-13 [T5]
N-71-14 [T5]
N-71-15 [T5]
N-71-16 [T5]
N-71-17 [T5]
N-71-18 [T2]
N-77 [T3]
N-81 [T3]
N-82 [T3]
N-84 [T3]
N-90 [T3]
N-92 [T4]
N-94 [T3]
N-95-1 [T5]
N-95-2 [T3]
N-96-1 [T3]
N-100 [T4]
N-101 [T3]
N-102-1 [T5]
N-102-2 [T3]
N-106-2 [T4]
N-107-1 [T3]
N-108 [T3]
N-109 [T3]
N-110 [T4]
N-111 [T3]
N-114 [T3]
N-115 [T3]
N-116 [T4]
N-119-2 [T5]
N-119-3 [T5]
N-119-4 [T5]
N-119-5 [T5]
N-119-6 [T3]
N-121 [T3]
N-122 [T5]
N-122-2 [T1]
N-123 [T3]
N-124 [T3]
N-125 [T3]
N-126 [T3]
N-127 [T3]
N-131-1 [T1]
N-133 [T5]
N-133-1 [T5]
N-133-2 [T5]
N-133-3 [T1]
N-139 [T3]
N-140 [T3]
N-142-1 [T3]
N-146-1 [T4]
N-147 [T3]
N-148 [T3]
N-154 [T5]
N-154-1 [T1]
N-155-2 [T2]
N-156 [T3]
N-157 [T3]
N-158 [T3]
N-159 [T3]
N-160 [T5]
N-160-1 [T1]
N-171 [T1]
N-174 [T3]
N-175 [T4]
N-176-1 [T3]
N-177 [T3]
N-178 [T3]
N-179 [T3]
N-180 [T3]
N-181 [T3]
N-182 [T3]
N-183 [T3]
N-184 [T3]
N-188 [T5]
N-188-1 [T3]
N-189 [T3]
N-190 [T3]
N-192 [T5]
N-192-1 [T5]
N-192-2 [T5]
N-192-3 [T1]
N-193 [T3]
N-196 [T5]
N-196-1 [T3]
N-199 [T4]
N-204 [T3]
N-205 [T1]
N-206 [T3]
N-207 [T5]
N-207-1 [T3]
N-208-1 [T1] 
N-208-2 [T3]
N-212 [T3]
N-213 [T1]
N-214 [T5]
N-214-1 [T5]
N-214-2 [T3]
N-215 [T3]
N-217-1 [T3]
N-220 [T3]
N-223 [T3]
N-224 [T5]
N-224-1 [T3]
N-225 [T3]
N-226 [T3]
N-227 [T3]
N-228 [T3]
N-229 [T3]
N-231 [T3]
N-233 [T3]
N-237 [T5]
 
Appendix C to RG 1.84, Page C-2 N-237-1 [T5]
N-237-2 [T3]
N-238 [T4]
N-240 [T3]
N-241 [T3]
N-242 [T5]
N-242-1 [T4]
N-243 [T1]
N-245 [T3]
N-246 [T5]
N-246-1 [T5]
N-246-2 [T3]
N-247 [T3]
N-248 [T3]
N-249 [T5]
N-249-1 [T5]
N-249-2 [T5]
N-249-3 [T5]
N-249-4 [T5]
N-249-5 [T5]
N-249-6 [T5]
N-249-7 [T5]
N-249-8 [T5]
N-249-9 [T5]
N-249-10 [T5]
N-249-11 [T5]
N-249-12 [T5]
N-249-13 [T5]
N-249-14 [T2]
N-252 [T4]
N-259 [T3]
N-260 [T5]
N-260-1 [T5]
N-260-2 [T4]
N-261 [T3]
N-262 [T3]
N-263 [T4]
N-265 [T5]
N-265-1 [T3]
N-267 [T3]
N-271 [T3]
N-272 [T3]
N-274 [T4]
N-275 [T4]
N-276 [T3]
N-277 [T3]
N-279 [T4]
N-280 [T3]
N-281 [T3]
N-282 [T3]
N-284-12 N-284-2 [T1]
N-292 [T4]
N-294 [T3]
N-295 [T3]
N-296 [T3]
N-298 [T3]
N-299 [T5]
N-299-1 [T3]
N-300 [T3]
N-302 [T3]
N-304 [T5]
N-304-1 [T5]
N-304-2 [T5]
N-304-3 [T5]
N-304-4 [T3]
N-309 [T5]
N-309-1 [T3]
N-310-1 [T4]
N-313 [T3]
N-314 [T4]
N-315 [T1]
N-316 [T3]
N-317 [T3]
N-318 [T5]
N-318-1 [T5]
N-318-2 [T5]
N-318-3 [T5]
N-318-4 [T5]
N-318-5 [T1]
N-319 [T5]
N-319-1 [T5]
N-319-2 [T5]
N-319-3 [T1]
N-320 [T3]
N-321 [T5]
N-321-1 [T3]
N-324 [T3]
N-328 [T3]
N-329 [T1]
N-336 [T3]
N-337 [T5]
N-337-1 [T3]
N-339 [T3]
N-341 [T3]
N-342 [T3]
N-345 [T5]
N-345-1 [T3]
N-346 [T3]
N-347 [T3]
N-348 [T4]
N-348-1 [T4]
N-348-2 [T4]
N-349 [T3]
N-350 [T4]
N-351 [T1]
N-352 [T5]
N-352-1 [T3]
N-353 [T3]
N-354-1 [T3]
N-355 [T3]
N-357 [T3]
N-359 [T3]
N-362 [T5]
N-362-1 [T5]
N-362-2 [T3]
N-367 [T3]
N-368 [T3]
N-369 [T1]
N-370 [T5]
N-370-1 [T5]
N-370-2 [T3]
N-371 [T5]
N-371-1 [T3]
N-372 [T3]
N-373-1 [T5]
N-373-2 [T5]
N-373-3 [T1]
N-376 [T3]
N-377 [T3]
N-378 [T3]
N-379 [T5]
N-379-1 [T3]
N-383 [T5]
N-383-1 [T4]
N-384-1 [T3]
N-387 [T3]
N-388 [T3]
N-391 [T5]
N-391-1 [T5]
N-391-2 [T1]
N-392 [T5]
N-392-1 [T5]
N-392-2 [T5]
N-392-3 [T1]
N-393 [T3]
N-394 [T3]
N-395 [T3]
N-397 [T4]
N-398 [T4]
N-403 [T3]
N-404 [T4]
N-405-1 [T1]
N-410 [T3]
N-411 [T5]
N-411-1 [T4]
N-412 [T3]
N-413 [T3]
N-414 [T3]
N-418 [T5]
N-418-1 [T3]
N-420 [T3]
N-421 [T3]
N-430 [T4]
N-433 [T3]
N-438 [T5]
N-438-1 [T1][T5]
N-438-2 [T5]
N-438-3 [T5]
N-438-4 [T3]
N-439 [T5]
N-439-1 [T3]
N-440 [T5]
N-440-1 [T3]
N-441 [T5]
N-441-1 [T5]
N-441-2 [T3]
N-442 [T3]
N-443 [T5]
N-443-1 [T5]
N-443-2 [T3]
N-451 [T3]
N-452 [T1]
N-453 [T5]
N-453-1 [T5]
N-453-2 [T5]
N-453-3 [T1]
N-454 [T5]
N-454-1 [T1]
N-455 [T5]
N-455-1 [T1]
N-459 [T3]
N-462 [T3]
N-464 [T3]
N-466 [T5]
N-466-1 [T3]
N-468 [T3]
N-469 [T5]
N-469-1 [T1]
N-470 [T3]
N-474 [T5]
N-474-1 [T5]
N-474-2 [T3]
N-475 [T3]


Appendix C to RG 1.84, Page C-3 N-476 [T3]
4. Code Cases on the approved list may be applied to components that were in the process of construc tion prior to the effective date of the Code Case within the limits specified in the Code Case and ap plicable regulations or recommended in other regu latory guides.
N-482 [T3]
N-483-22 N-483-32 N-484 [T5]
N-484-1 [T3]
N-492 [T5]
N-492-1 [T3]
N-493 [T1]
N-497 [T5]
N-497-1 [T3]
N-5003 N-500-1 [T2]
N-500-2 [T1]
N-501 [T3]
N-502 [T3]
N-505 [T1]
N-507 [T3]
N-510 [T5]
N-5102 N-510-12 N-511 [T1]
N-5192 [T3]
N-520 [T5]
N-520-1 [T1]
N-525 [T1]
N-5302 N-539 [T1]
N-540 [T3]
N-548 [T1]
N-549 [T3]
N-550 [T3]
N-551 [T3]
N-558 [T1]
N-559 [T3]
N-564 [T5]
N-564-1 [T5]
N-564-2 [T1]
N-5652 N-570 [T5]
N-570-1 [T2]
N-572 [T1]
N-579 [T1]
N-580 [T5]
N-580-1 [T1]
N-594 [T1]
N-5952 N-595-12 N-595-22 N-595-32 N-595-42 N-596 [T3]
N-607 [T1]
N-608 [T3]
N-610 [T1]
N-611 [T1]
N-620 [T1]
N-621 [T5]
N-621-1 [T1]
N-625 [T5]
N-625-1 [T1]
N-626 [T2]
N-631 [T1]
N-632 [T1]
N-635 [T5]
N-635-1 [T1]
N-636 [T1]
N-637 [T1]
N-642 [T1]
N-644 [T5]
N-644-1 [T1]
N-6452 N-645-12 N-646 [T1]
N-650 [T1]
N-655 [T2]
N-656 [T2]
N-657 [T1]
N-6592 N-659-12 N-6702 N-6732 N-692 [T1]
N-6932 N-698 [T1]
N-699 [T1]
N-703 [T1]
N-7072 N-710 [T1]
N-725 [T1]
N-727 [T1]
N-7282 N-732 [T1]
N-736 [T1]
N-738 [T1]
N-741 [T1]
N-744 [T1]
N-746 [T1]
N-756 [T1]
N-759 [T1]
1141-7 [T3]
1332-6 [T5]
1335-9 [T5]
1337-9 [T5]
1337-10 [T5]
1361-2 [T4]
1395-3 [T5]
1407-2 [T5]
1412-4 [T4]
1414-3 [T5]
1414-4 [T5]
1423-2 [T4]
1434-1 [T3]
1461-1 [T3]
1470-2 [T3]
1471-1 [T3]
1475-1 [T3]
1477-1 [T3]
1484-1 [T5]
1484-2 [T5]
1492 [T5]
1494-1 [T3]
1506 [T3]
1508 [T5]
1515 [T3]
1516-1 [T5]
1521-1 [T4]
1528-3 [T4]
1529 [T3]
1531 [T3]
1532 [T3]
1533 [T3]
1535-2 [T3]
1536 [T3]
1540-1 [T5]
1541-1 [T5]
1541-2 [T5]
1552 [T5]
1553 [T5]
1553-1 [T3]
1555 [T5]
1555-1 [T3]
1557-2 [T5]
1567 [T3]
1568 [T3]
1569 [T4]
1573 [T3]
1574 [T3]
1580-1 [T3]
1581 [T3]
1583 [T3]
1587 [T3]
1590 [T3]
1601 [T3]
1602-1 [T3]
1603 [T3]
1605 [T3]
1606 [T5]
1606-1 [T4]
1607 [T5]
1607-1 [T4]
1608-1 [T3]
1613 [T3]
1614 [T3]
1615 [T3]
1616 [T3]
1618 [T5]
1618-1 [T5]
1622 [T3]
1623 [T3]
1625 [T3]
1626 [T5]
1633 [T3]
1634 [T5]
1634-1 [T5]
1635-1 [T4]
1636-1 [T4]
1637 [T3]
1644 [T5]
1644-1 [T5]
1644-2 [T5]
1644-3 [T5]
1644-4 [T5]
1644-5 [T5]
1644-6 [T5]
1645 [T3]
1648 [T3]
1649 [T3]
1650 [T3]
1651 [T3]
1657 [T3]
1659 [T3]
1661 [T3]
1662 [T3]
1664 [T3]
1666 [T3]
1672 [T3]
1675 [T3]
1676 [T3]
1678 [T3]
1682 [T5]
1682-1 [T3]
1683 [T5]
1683-1 [T3]


Appendix C to RG 1.84, Page C-4
1.84-19
1684 [T3]
1685 [T3]
1686 [T3]
1689 [T5]
1689-1 [T4]
1690 [T3]
1691 [T3]
1695 [T5]
1701 [T5]
1702 [T5]
1703 [T3]
1706 [T3]
1713 [T3]
1714 [T5]
1718 [T3]
1719 [T3]
1720 [T5]
1720-1 [T5]
1722 [T5]
1728 [T3]
1740 [T3]
1741 [T5]
1741-1 [T3]
1742 [T3]
1743 [T3]
1755 [T5]
1759 [T5]
1760 [T3]
1761 [T5]
1765 [T3]
1766 [T3]
1767 [T3]
1768 [T3]
1769 [T5]
1769-1 [T3]
1773 [T3]
1774 [T5]
1775 [T3]
1777 [T3]
1780 [T5]
1783 [T5]
1783-1 [T4]
1787 [T3]
1798 [T3]
1808 [T3]
1810 [T3]
1819 [T3]


1 Except for those Code Cases pertaining to high temperature gas-cooled reactors; Section III, Division 2; liquid metal;
APPENDIX
and submerged spent fuel waste casks.
NUMERICAL LISTING OF CODE CASES
N-62-7 N-309-1 N-122-2 N-313 N-133-3 N-315 N-154-1 N-318-5 N-155-2(1792-2)
N-345-1 N-160-1 N-368 N-192-2 N-369 N-240
N-391-1 N-241 N-392-2 N-243 N-393 N-284 N-394 N-292 N-395 N-304-4 N-410
N-411-1 N-420
N-433 N-452 N-453-1 N-454 N-455 N-464 N-476 N-505 N-511 N-520
VALUE/IMPACT STATEMENT
A draft value/impact statement was published with the draft of this guide when it was published for public comment (Task DG-1048, May 1997). No changes were necessary, so a separate value/impact statement for Revision 31 of Regulatory Guide 1.84 has not been prepared. A copy of the draft value/im pact statement is available for inspection or copying for a fee in the NRC's Public Document Room at 2120 L Street NW., Washington, DC, under Task DG-1048.


2 Code Case is not acceptable for use; see Regulatory Guide 1.193 (Ref. 4).}}
1.84-20
[}}


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

Revision as of 02:06, 17 January 2025

1, (Draft Was Issued as DG-1048), Design and Fabrication Code Case Acceptability, ASME Section III, Division 1
ML003740283
Person / Time
Issue date: 05/31/1999
From:
Office of Nuclear Regulatory Research
To:
References
RG-1.84, Rev 31
Download: ML003740283 (20)
v • d • e


A. INTRODUCTION

Section 50.55a, "Codes and Standards," of 10 CFR

Part 50, "Domestic Licensing of Production and Uti lization Facilities," requires, in part, that components of the reactor coolant pressure boundary be designed, fabricated, erected, and tested in accordance with the requirements for Class 1 components of Section III,

"Nuclear Power Plant Components,"' of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code or equivalent quality standards.

Footnote 6 to 10 CFR 50.55a states that the use of spe S>cific Code Cases may be authorized by the Commission upon request pursuant to 10 CFR 50.55a(a)(3), which requires that proposed alternatives to the described re quirements or portions thereof provide an acceptable level of quality and safety.

General Design Criterion 1, "Quality Standards and Records," of Appendix A, "General Design Crite ria for Nuclear Power Plants," to 10 CFR Part 50 re quires, in part, that structures, systems, and compo nents important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be per

1Copies may be obtained from the American Society of Mechanical Engi neers, Three Park Avenue, New York, New York 10016-599

0. Phone

(212)591-8500; fax (212)591-8501.

Revision 31 May 1999 JIDE

formed. Where generally recognized codes and stan dards are used, Criterion 1 requires that they be identi fied and evaluated to determine their applicability, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keeping with the required safety function.

Criterion 30, "Quality of Reactor Coolant Pressure Boundary," of 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 es tablished for the control of special processing of materi als and that proper testing be performed.

This regulatory guide lists those Section III ASME

Code Cases oriented to design and fabrication that are generally acceptable to the NRC staff for implementa tion in the licensing of light-water-cooled nuclear power plants. The guide is being revised to update the NRC's position on new Code Cases, revised Code Cases, and annulled Code Cases since Revision 30 of the guide was issued in October 1994.

This regulatory guide contains no information collection activities and, therefore, is not subject to the USNRC REGULATORY GUIDES

The guides are issued in the following ten broad divisions:

Regulatory Guides are issued to describe and make available to the public such informa tion as methods acceptable to the NRC staff for implementing specific parts of the Corn-

1. Power Reactors

6. Products mission'sregulations, techniquesusedbythestaffinevaluatingspecificproblemsorpos.

2. Research and Test Reactors

7. Transportation tulated accidents, and data needed by the NRC staff in its review of applications for per-

3. Fuels and Materials Facilities

8. Occupational Health mits and licenses. Regulatory guidesare notsubstitutesforregulations, and compliance

4. Environmental and Siting

9. Antitrust and Financial Review withthemisnotrequired. Methodsand solutionsdifferentfromthosesetoutintheguides

5. Materials and Plant Protection

10.

General will be acceptable if they provide a basis for the findings requisite to the issuance or con tinuance of a permit or license by the Commission.

Single copies of regulatory guides may be obtained freeofcharge by writing to the Repro This guide was issued after consideration of comments received from the public. Coin- duction and Distribution Services Section, Office of the Chief Information Officer, U.S. Nu ments and suggestions for improvementsinthese guidesare encouraged at all times, and clear Regulatory Commission, Washington, DC 20555-0001; or by fax to (301)415-2289;

guides will be revised, as appropriate, to accommodate comments and to reflect new in- or by email to DISTRIBUTION@NRC.GOV.

formation or experience.

Issued guides may also be purchased from the National Technical Information Service on Written comments may be submitted to the Rules and Directives Branch, ADM, U.S. Nu- a standing order basis. Details on this service may be obtained by writing NTIS, 5285 Port clear Regulatory Commission, Washington, DC 20555-CO01.

Royal Road, Springfield, VA 22161.

U.S. NUCLEAR REGULATORY COMMISSION

REGULATORY GL

OFFICE OF NUCLEAR REGULATORY RESEARCH

REGULATORY GUIDE 1.84 (Draft was issued as DG-1048)

DESIGN AND FABRICATION CODE CASE ACCEPTABILITY,

ASME SECTION III, DIVISION 1

requirements of the Paperwork Reduction Act of 1980

(44 U.S.C. 3501 et seq.).

B. DISCUSSION

The ASME Boiler and Pressure Vessel Committee publishes a document entitled "Code Cases."1 Gener ally, the individual Code Cases that make up this docu ment explain the intent of Code rules or provide for al ternative requirements under special circumstances.

Most Code Cases are eventually superseded by re vision 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 un der 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 ap proved 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.

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

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 May 12, 1994, were reviewed for inclusion in this guide. In addition to the listing of ac ceptable Code Cases, this revision of the guide includes listings of (1) Code Cases that were identified as ac ceptable 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 identi fied 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 en dorsed 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 ap plications not precluded by regulatory or other require ments or by the recommendations in this or other regu latory guides. Contingent endorsement is indicated in Regulatory Position 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

  • Lines indicate substantive changes from Revision 30.

no conflicts with other recommended limitations re sulting from Code Case usage.

Acceptance or endorsement by the NRC staff ap plies only to those Code Cases or Code Case revisions with the date of ASME approval as shown in the Regu latory 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 deter mine whether 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 pe riodic updating to accommodate new Code Cases and any revisions of existing Code Cases.

C. REGULATORY POSITION

1. ACCEPTABLE CODE CASES

The Section III ASME Code Cases 2 listed below (by number, date of ASME approval, and title) are ac ceptable to the NRC staff for application in the construction of components for light-water-cooled nu clear power plants. Their use is acceptable within the li mitations 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 with in 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 in tended 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-122-2 04-28-94 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class

1 Piping,Section III, Divi sion 1 N-160-1

07-18-85 Finned Tubing for Construc

07-18-88 tion,Section III, Division 1

03-14-91

03-14-94 N-453-2 04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925 and N08926)

Seamless and Welded Pipe for Class 2 and 3 Construction,Section III, Division 1

2A numerical listing of the Code Cases appears in the appendix.

3When 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-454-1 04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925 and N08926)

Wrought Fittings for Class 2 and 3 Construction Section III,

Division 1 N-455-1

04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925 and N08926)

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 Use of SB-148 Alloys 952 and

07-18-88

954,Section III, Division 1,

03-14-91 Class 3

03-14-94 N-313

05-11-81

11-28-83

11-28-86

11-28-89

11-28-92 N-394

02-20-84

07-30-86

07-30-89

07-27-92 N-410

12-05-84

07-27-88

03-14-91

03-14-94 Alternate Rules for Half Coupling Branch Connections,Section III, Division 1 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 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 Ili, Di vision 1, Classes 2 and 3 N-309-1

12-05-85 Identification of Materials for

07-27-88 Component Supports, Section

03-14-91 III, Division 1 N-411-1

02-20-86

02-20-89

04-30-92 Alternative Damping Values 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 fol lowing conditions in addition to those conditions speci fied 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 val ues specified in Regulatory Guide 1.61, "Damping Val ues 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 employed. Such use should be limited only to response spectral analyses (similar to that used in the study supporting its accep tance-Reference NUREG/CR-3526). (3) When used for reconciliation work or for support optimization of existing designs, the effects of increased motion on ex isting clearances and on line mounted equipment should be checked. (4) This Code Case is not appropri-.

ate for analyzing the dynamic response of piping sys tems 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 applicable to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is made and is re viewed by the NRC staff.

N-420

02-14-85

02-14-88

03-14-91

03-14-94 N-433

12-16-86

12-16-89

12-16-92

(3) Other Code Cases Related to Design:

N-122-2

04-28-94 N-243

08-30-79

07-16-82

05-19-85

05-19-88

03-14-91

03-14-94 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class

1 Piping,Section III, Divi sion 1 Boundaries Within Castings Used for Core Support Struc tures,Section III, Division 1, Class CS

Linear Energy Absorbing Sup ports for Subsection NF,

Classes 1, 2, and 3 Construc tion,Section III, Division 1 Non-Threaded Fasteners for Section III, Division 1, Class 1, 2, and 3 Component and Piping Supports,Section III, Division 1 N-476

05-06-89 Class 1, 2, 3, and MC Linear

07-27-92 Component Supports-Design Criteria for Single Angle Mem bers,Section III, Division 1, Subsection NF

N-505

07-27-92 Alternative Rules for the Ex amination of Butt Welds Used as Closure Welds for Electrical Penetration Assemblies in Con tainment Structures,Section III, Division 1

1.84-3

_________________________________________

.1 N-511

02-12-93 Design Temperature for Atmo spheric and 0-15 PSI Storage Tanks,Section III, Division 1 N-520

12-09-93 Alternative Rules for Renewal of N-type Certificates for Plants Not in Active Construc tion,Section III, Division 1 b. Fabrication-oriented Code Cases

(1) Code Cases Related to Welding and Brazing:

N-154-1

12-05-85

12-05-88

02-05-92 N-304-4 02-23-87

12-11-89

02-12-93 N-315

02-14-83

02-19-86

02-19-89

02-05-92 Projection Resistance Welding of Valve Seats,Section III,

Division 1, Class 1, 2, and 3 Valves 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 speci fied in the Code Case: Prior to repair the user will quali fy the repair procedures on a full-scale mockup bellow to ensure that the repair meets all design requirements for bellows.

N-345-1

12-13-82

06-30-88

03-14-91

03-14-94 Attachment of AMS 5382 Alloy 31 Seat Rings by Fric tion Welding,Section III,

Division 1, Classes 1, 2, and 3 N-391-1

07-24-89 Procedure for Evaluation of the

07-27-92 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 fol lowing conditions in addition to those specified in the Code Case: 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.

N-392-2

12-11-92 N-393

11-28-83

07-30-86

07-30-89

07-27-92 N-395

12-11-89

12-11-92 N-452

03-08-89

04-30-92 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 Repair Welding Structural Steel Rolled Shapes and Plates for Component Supports,Section III, Division 1 Laser Welding,Section III,

Division 1 Specialized Subcontracted Welding Process (Electron Beam Welding),Section III,

Division 1 N-464

03-08-89 Laser Welding of Lap-Joints,

04-30-92 Section III, Division 1, Class 2 and 3 Construction

(2)

N-240

Other Code

03-19-79

01-21-82

09-17-84

09-17-87

08-14-90

08-14-93 N-241

07-09-79

01-21-82

09-17-84

09-17-87

12-11-89

12-11-92 N-368

07-06-83

06-30-87

08-14-90

08-14-93 N-369

02-14-83

02-19-86

02-19-89

02-05-92 Cases Related to Fabrication 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,

Division 1, Classes 2 and 3 Resistance Welding of Bellows,Section III, Divi sion 1 c.

Code Cases with Contingent Approval N-62-7

05-11-94 Internal and External Valve Items,Section III, Division 1, Class 1, 2, and 3 Code Case N-62-7 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the pro visions of NCA 4000.

1.84-4

1 11 J ,

1792-2

01-08-79 Fiberglass Reinforced Thermo (N-155-2) 01-21-82 setting Resin Pipe,Section III,

01-21-85 Division 1

01-21-88

03-14-91

03-14-94 Code Case 1792-2 (N-155-2) is acceptable subject to the following condition in addition to those condi tions specified in the Code Case: The applicant should satisfy the additional limitations that are specified in Regulatory Guide 1.72, "Spray Pond Piping Made from Fiberglass-Reinforced Thermosetting Resin."

N-192-2 09-16-81

09-17-84

09-17-87

08-14-90

08-14-93 N-284

08-25-80

05-25-83

07-30-86

07-30-89

07-27-92 Use of Braided Flexible Con nectors,Section III, Division 1, Class 2 and 3 Metal Containment Shell Buckling Design Methods,Section III, Division 1, Class MC

Code Case N-284 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: If axisymmetric techniques are employed in the analysis of vessels with large open ings, the applicability of the methodology in these ap plications should be demonstrated.

2. ANNULLED CODE CASES

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. 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 I, III, and VIII, Division 1 and 2

1470-27

12-18-72 External Pressure Charts for

11-04-74 High-Strength Carbon Steels and for Low-Alloy Steels, Sec tion VIII, Division 1 and 2, and Section III

1471-1

03-09-72 Vacuum Electron Beam Weld

01-01-78 ing of Tube Sheet Joints, Sec tion III

1477-1

03-09-72

01-01-78

1494-1

03-03-73

01-01-78 Use of 1970 Addenda of ANSI

B31.7,Section III

Weld Procedure Qualification Test,Section III

Depositing Weld Metal Prior to Preparing Ends for Welding,Section III, Division 1, Class 1,

2, and 3 Construction Code Case N-292 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: Class 3 piping that is longitudi nally welded and that has a weld efficiency factor of 1.0

as selected from Table ND-3613.4-1 should receive a

100 percent volumetric examination (RT or UT) of the deposited weld metal in accordance with the require ments of ND-5000.

N-318-5 04-28-94 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping,Section III, Divi sion 1

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 Attachments in Valves for Section III Ap plications

4Earlier date-date Code Case was approved by ASME; later date-date Code Case was annulled. Where more than two dates appear, the last date is the date that the Code Case was annulled. The middle date (or dates)

was the date of reaffirmation of the Code Case.

5Code Cases 1355-3, 1534, and 1554, which were listed in the original issue of the guide, were annulled by ASME action prior to July 1,1974.

6Code Case 1461-1 is no longer listed as a Section III Code Case and is therefore deleted from the acceptable listing.

7The annulment of Code Case 1470-2 was effective upon ASME ap proval of Code Case 1630. However, because of an oversight, the annul ment was not noted until publication of Supplement No. 13 to the 1974 Code Cases.

1.84-5 N-292

01-05-81

11-28-83

07-30-86

07-30-89

07-27-92

1516-2 (N-24)

11-20-788

01-01-80

Welding of Seats or Minor In ternal Permanent Attachments in Valves for Section III Ap plications

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 (N-30-1)

11-21-77 Metal Bellows and Metal Dia

01-01-81 phragmr Stem Sealed Valves,Section III, Division 1, Classes

1, 2, and 3 N-31-1

07-18-85

07-18-88

03-14-91

07-01-93 Elastomer Diaphragm Valves,Section III, Class 2 and 3 Code Case N-31-1 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: Each applicant who applies the Code Case should indicate in the referencing Safety Analysis Report that the service life of the elastomer di aphragm 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 es tablished 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 com bined service and storage life of the elastomer dia phragm should not exceed 10 years.

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, Division

1 Construction

8This revision of the Code Case was originally approved by the ASMEon

8-11-75 and was annulled on 7-1-78 because of the publication of revi sions to Section III in the Winter 1977 Addenda. However, the users did not believe that the Code Case was covered in the Code revision; there fore, ASME reaffirmed the Case on 11-20-78. Because of these circum stances 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.

9Code Case was annulled on date as indicated, but the annulment was first indicated in Revision 12 to this guide.

N-32-4

03-16-81 Hydrostatic Testing of Em

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 conditions specified in the Code Case:

The acceptance was based on the following clarifi cation and interpretation. Code Case N-32-4 does not replace paragraph NC/ND 6129, "Provisions for Em bedded 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) per mit liquid penetrant or magnetic particle testing in place of radiographic testing for Class 3 piping with

3/8" nominal wall thickness or less.

Paragraph (1) contains an additional requirement to the Code. It was, therefore, acceptable but unneces sary to include in the Code Case. Paragraph (2) is a vari ation in the volumetric examination technique and was acceptable as written. Paragraph (3) contains an addi tional requirement and is not a relaxation of the Code. It was, therefore, acceptable but unnecessary to include in the Code Case.

1552-1 (N-35-1)

1553-19

08-29-77

07-01-79

03-03-75

01-01-76

1555-1

01-14-77

01-01-78

1569

03-03-7510

07-01-79 Design by Analysis of Section III, Class 1 Valves Upset Heading and Roll Threading of SA-453 for Bolt ing in Section III

Certification of Safety Relief Valves,Section III, Division 1 Design of Piping for Pressure Relief Valve Station,Section III

Code Case 1569 was acceptable subject to com pliance with the recommendations contained in Regu latory Guide 1.67, "Installation of Over-pressure Protection Devices."

1573

04-30-73 Vacuum Relief Valves, Section

01-01-78 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 Sec tion III, Class 1, 2, and 3 Construction

'0Corrected date.

1.84-6

1581

06-25-73 Power-Operated Pressure Re

03-01-79 lief Valves,Section III

1588 S(N-46)

08-13-73

03-19-79

03-19-82

1630-1

07-10-78 (N-66-1) 07-10-81 Electro-Etching of Section III

Code Symbols

1601

11-05-73 Limits of Reinforcement for

07-01-74 Two-Thirds Area,Section III,

Class 1

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 in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.

1607-1

11-04-74 Stress Criteria for Section III,

07-01-77 Classes 2 and 3 Vessels De signed to NC/ND-3300 Ex cluding the NC-3200 Alternate Code Case 1607-1 was acceptable subject to the in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.

N-55-1

(1609)

04-05-84 Inertia and Continuous Drive

04-05-87 Friction Welding,Section III,

Division 1

1614

12-17-7310

01-01-79

1620

(N-61)

03-02-74

01-08-79

01-08-82 Hydrostatic Testing of Piping Prior To or Following the Installation of Spray Nozzles for Section III, Classes 1, 2, and 3 Piping Systems Stress Category for Partial Pen etration Welded Penetrations,Section III, Class 1 Construc tion

1623

03-02-74 Design by Analysis for Section

03-01-79 III, Class 1 Sleeve-Coupled and Other Patented Piping Joints

1630-1 (N-66-1)

12-11-8111

12-05-84

12-05-87 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

External Pressure Charts for High Yield Strength Carbon 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 Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1635-1 was acceptable subject to the in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.

1636-112 08-12-74 Stress Criteria for Section III,

07-01-77 Class 2 and 3 Pumps Subjected to Upset, Emergency, and Faulted Operating Conditions Code Case 1636-1 was acceptable subject to the in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.

1651

08-12-74 Interim Requirements for Cer

03-01-79 tification of Component Sup ports,Section III, Subsection NF

lIThe Code Case was annulled on July 10, 1981 (ASME mandatory an nulment date). It was reinstated on December 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.

12Code 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.

1.84-7

1657

11-04-74 Stress Criteria for Class 2 and

07-01-77

3 Atmospheric and Low Pres sure (0-15 psig) Steel Storage Tanks

1659

11-04-74 Interconnection of Two Piping

07-01-77 Systems for Section III, Class

1, 2, and 3 Construction

1660

(N-77)

11-04-74 Overpressure Protection Under

03-01-79 Emergency Operating Condi tions 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 Pip ing Subassemblies for Section III, Class 1, 2, 3 and MC

Construction

1665 (N-81)

11-04-74 Pressure-Temperature Ratings

07-01-78 for Class 1 Valves Made from

5 Cr-1/2 Mo,Section III

1672

11-04-74 Nuclear Valves for Section III,

03-21-77 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 (N-82)

12-16-74 Clarification of Flange Design

03-01-79 Loads,Section III, Class 1, 2, and 3

1678

12-16-74

01-08-79

01-01-80

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

1685

04-28-75 Furnace Brazing Section III,

01-01-78 Class 1, 2, 3 and MC Construc tion

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 Sec tion 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 treatment should be prequalified along with the applicable weld ing procedure in accordance with ASME Section IX.

1692 (N-90)

1695-1

1700

(N-94)

04-28-75

07-01-78

11-03-75

01-01-78

11-03-75

03-19-79

03-19-82

1701-2

07-09-79 (N-95-2) 07-09-82

1702-1

07-11-77 (N-96-1) 01-01-80

LL

Rules for Design of Welded Class 1 Pumps Brazing,Section III, Division

1, Class 3 Determination of Capacities of Liquid Relief Valves,Section III, Division 1, Class 1, 2, and 3 Determination of Capacities of Vacuum Relief Valves,Section III, Division 1, Classes 2, 3, and MC and Division 2 Con crete Containments Flanged Valves Larger than 24 inches for Section III, Division

1, Class 1, 2, and 3 Construc tion

1703

06-30-75 Brazing of Copper Alloys, Sec

01-01-78 tion III, Class 2

1706

06-30-75 Data Report Forms for Compo

12-31-75 nent Supports,Section III,

Class 1, 2 and 3

1681-113 03-03-75 Organizations Accepting Over (N-84)

03-01-79 all Responsibility for Section III Construction

1683-1

03-01-76 Bolt Holes for Section III,

07-01-76 Class 1, 2, 3 and MC Compo nent Supports

13Code 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.

1711 (N-100)

11-03-75

01-08-79

01-21-82

01-01-83 Pressure Relief Valve Design Rules,Section III, Division 1, Class 1, 2 and 3 Code Case 1711 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied 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 speci fied for the upset operating condition, it should

1.84-8

be demonstrated how the pressure relief func tion is ensured. Refer to paragraph 3.1,Section I, of the Case for Class 1 and paragraph 3.2,Section II, of the Case for Class 2 and 3 pres sure relief valves.

(2) If Case 1660 is to be used in conjunction with this Case, it should be stated that the stress lim its of Case 1660 supersede those of paragraph

3.2(b),Section I, of Case 1711. Functional as surance of (1) above is required in all situa tions.

1712 (N-101)

08-11-75 Nameplates and Stamping for

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, Di vision 1, Class 1, 2 and 3 and MC

17199

08-11-75 Single-Welded, Full

07-01-76 Penetration Sidewall Butt Joints in Atmospheric Storage Tanks,Section III, Division 1, Class 2

1720-2 (N-106-2)

11-20-78

08-28-81

09-17-84

09-17-87

08-14-90

08-14-93 Weld End Preparation for Sec tion III, Division 1 Construc tion Code Case 1720-2 (N-106-2) was acceptable sub ject to the following condition in addition to those con ditions specified in the Code Case: The acceptance of weld end preparations other than those shown in Fig ures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.

1726 (N-109)

1727 (N-l10)

11-03-75 Refinement of Low Alloy Steel

03-01-79 Heat Affected Zone Under Overlay Cladding,Section III,

Division 1, Class 1 Compo nents

12-22-75 Alternate Test Fluids, Section

01-01-79 III, Division 1 Code Case 1727 was acceptable subject to the fol lowing condition in addition to those conditions speci fied 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 in formation provided should demonstrate that the fluid selected will not have deleterious effects on the mate rial 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 (N-Ill)

1732 (N-114)

1733 (N-115)

1734 (N-116)

11-03-75 Minimum Edge Distance-Bolt

03-01-79 ing for Section III, Division 1, Class 1, 2, and 3 and MC

Construction of Component Supports

11-03-75 Hardsurfaced Valves with Inlet

01-01-79 Connections less than 2-in.

Nominal Pipe Size for Section III, Division 1, Class 1 and 2 Construction

11-03-75 Evaluation of Safe Shut Down

01-01-78 Earthquake Loadings for Sec tion III, Division 1, Class MC

Containment Vessels

11-03-75 Weld Design for Use for Sec

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 fol lowing conditions in addition to those conditions speci fied in the Code Case: 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 ap plication of the configuration shown in Figures 2 and 3 should be restricted to the welding of cans for spring en capsulation 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 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) 12-01-8314 11I, Division 1, Class 1, 2, and 3 N-119-6 09-05-85 Pump Internal Items, Section

07-27-88 III, Division 1, Class 1, 2 and 3

03-14-91

03-14-94

14TheCode Case was annulled on December 1, 1983 (ASME mandatory annulment date). It was reinstated on February 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.

1.84-9

1744 (N-121)

03-01-76 Carbon Steel Pipe Flanges

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 Con struction,Section III,

Division 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 III

10-01-77 Personnel,Section III,

Division 1

1774-1

07-11-77 (N-142-1) 01-01-80

Minimum Wall Thickness for 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

07-10-7810 Hydrostatic Testing and Stamp (N-146-1) 12-11-81 ing of Components,Section III,

01-01-82 Division 1, Construction Code Case 1780-1 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: On a generic basis, the ap plication 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 applica tion in which the Code Case is to be used should contain information showing that, as a minimum, the closure fixture will impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly. A closure fixture for the part being tested that is similar in size and shape to the actual mating part is considered adequate to impose these loads. It is not intended that piping reaction load ings be simulated in the hydrostatic testing.

1783-1

01-14-77 Qualification of Nondestructive

01-01-79 Examination Personnel, Sec tion III, Division 1 Code Case 1783-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The first sentence of paragraph

(1) should be replaced with the following: "The certifi cation of the Level III nondestructive examination per sonnel 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 responsi bility of the Certificate Holder."

1791 (N-154)

1796 (N-159)

01-14-77 Projection Resistance Welding

01-14-80 of Valve Seats,Section III, Di vision 1, Class 1, 2 and 3 Valves

01-14-77 Body Neck Thickness Deter

07-01-78 mination for Valves with Inlet Connections 4-Inch Nominal Pipe Size and Smaller,Section 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, Sections I, II, III, IV, V, VIII, and IX

1812, (N-174)

1818 (N-175)

03-23-77

01-07-80

01-01-81 Size of Fillet Welds for Socket Welding of Piping,Section III,

Division 1

03-23-77 Welded Joints in Component

07-01-79 Standard Supports,Section III,

Division 1 Code Case 1818 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: That portion of the unwelded housing that is limited to 90 0 maximum should include a minimum of two sectors that are uniform in length.

N-179

07-11-77 Openings in Valves for Section

07-11-80

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 Construc tion 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, Divi sion 1, Class 3 Flange and Socket Weld End Valves

1.84-10

d

N-196-1 01-08-79 Exemption from the Shake

01-21-82 down Requirements When

01-21-85 Plastic Analysis is Performed

01-21-88 for Section III, Division 1,

12-03-90 Class 1 and CS Construction

07-01-92 N-199

03-20-78 Intervening Elements, Section

01-01-81 III, Division 1, Classes 1, 2, 3 and MC Component Construc tion Code Case N-199 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The applicant should provide in formation 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-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 N-237-2 05-25-83

07-30-86

12-07-87

07-01-88 Alternate Rules for Fabrication Welding SB-148 Alloy CDA

954 for Section III, Division 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 Hydrostatic Testing of Internal Piping,Section III, Division 1, Classes 2 and 3

1693 (N-212)

03-20-78 Welding Procedure Qualifica

01-01-81 tion of Dissimilar Metal Welds When "Buttering" 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-21515

05-15-78 Integrally Finned Titanium

05-15-81 Tubes,Section III, Division 1, Class 3 Construction N-217-1 01-07-80

09-07-82

12-05-84

09-05-85

02-23-87 N-220

08-28-78

07-13-84

07-13-81 Postweld Heat Treatment of Weld Deposit Cladding on Classes 1, 2, 3, MC, and CS

Items,Section III, Division 1 Code Effective Date for Com ponent Supports,Section III,

Division 1 N-226

11-20-78 Temporary Attachment of

01-01-80 Thermocouples,Section III,

Division 1, Class 1, 2 and 3 Component Construction

15Code Case N-215 was annulled effective May 15,1981. It was removed from the active Code Case listing with Revision 29 of Regulatory Guide

1.84.

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 fol lowing conditions in addition to those conditions speci fied in the Code Case: The furnace brazing process pro cedure qualification should include a verification for nonsensitization as given in ASTM A 262-70, Practic es A or E, or ASTM A 708-74 whenever materials sub ject to sensitization are to be brazed. Documentation is required that a nonsensitizing brazing procedure was employed for valves produced to this Case.

N-247

07-09-79

01-21-82

01-21-85

01-21-88

03-14-91

04-30-93 Certified Design Report Sum mary for Component Standard Supports,Section III, Division

1, Class 1, 2, 3 and MC

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 fol lowing conditions in addition to those conditions speci fied in the Code Case: The applicant should indicate in the Safety Analysis Report the application, the mate rial, and the material thickness to which the strain gage or thermocouple will be attached by CD welding.

1.84-11

N-260-2

12-05-85 Weld Repair of SA-182 Type

12-05-88

316 Forgings,Section III, Divi sion 1, Classes 1, 2, 3, and MC

Code Case N-260-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Type 308 L welding materials should not be used to repair grade F 316 N forgings be cause of the difference in strength levels.

N-261

05-15-80

Weld Procedure Qualification

12-13-82 for Materials with Impact Re quirements for Section III, Di vision 1, Class 3 Construction N-262

01-07-80

09-07-82

09-05-85

07-27-88

03-14-91

07-27-91 Electric Resistance Spot Weld ing for Structural Use in Com ponent Supports,Section III,

Division 1 N-263

03-17-80 Alternate Thread Forms, Series

03-17-83 and Fits for Component Sup ports,Section III, Division 1 Code Case N-263 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case. The following information should be provided in the Safety Analysis Report: (1) a description of the application, (2) a need for the use of the Code Case, and (3) a demonstration that support de sign will withstand maximum conditions of loading with the worst combination of thread tolerance.

N-271

03-17-80 Simplified Method for Analyz

02-14-86 ing Flat Face Flanges with Metal to Metal Contact Outside the Bolt Circle for Section III,

Class 2, 3, and MC Construc tion N-272

05-15-80

Compiling Data Report Forms,

01-01-82 Section III, Division 1 N-275

05-15-80

12-07-82

12-31-83 Repair of Welds,Section III,

Division 1 Code Case N-275 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Use of the Code Case is applica ble 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 removal of examination material. If an indication is removed and weld-metal layers still remain, it is not ac- ceptable to gouge through the wall in order to qualify for use of the Code Case. Instead, examination of the cavity is required when such an indication has been re moved.

N-276

03-17-80

02-14-83

02-14-86 N-279

05-15-80

07-13-81 Welding of SA-358 Pipe, Sec tion III, Division 1 Use of Torquing as a Locking Device for Section III, Division

1, Class 1, 2, 3, and MC Com ponent Supports Code Case N-279 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: When torquing or other preload ing is used as a locking device and the joint is later unloaded or disassembled, the bolting should be re placed unless it can be demonstrated or proved to the authorized nuclear 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 Performance

07-01-81 Qualification,Section III, Divi sion 1 N-282

05-15-80

05-25-83

07-30-86

07-30-89 Nameplates for Valves,Section III, Division 1, Class 1, 2, and

3 Construction N-300

11-17-80

Pressure-Temperature Ratings,

12-01-83 Hydrostatic Tests, and Mini mum 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 En

05-11-84 gagement,Section III,

Division 1 Code Case N-314 was acceptable subject to the fol lowing conditions in addition to those conditions speci fled 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 estab lish thread engagement.

1.84-12 d

N-316

12-11-81

09-17-84

09-17-87

08-14-90

08-14-93 N-320

07-13-81

12-31-83 N-328

12-11-81

09-17-84

09-17-87 N-336

06-17-82 Examination of Welds Inacces

06-30-83 sible 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

05-19-85

02-23-87

07-01-88 N-346

06-17-82

05-19-85

06-30-86 Certification of Level III NDE

Examiner,Section III, Division

1 and 2 Explosive Welding,Section III,

Division 1 N-347

12-07-82 Continuous Electric Resistance

12-13-85 Seam Welding of P-No. 8 Ma terials for Component Sup ports,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,Section III, Division 1 Code Case N-350 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants wishing to use this Case for other than P-1 materials should demonstrate that the use of this Case will not adversely affect the re quired material properties.

N-357

12-13-82

05-19-85

07-01-88 Certification of Material for Component Supports,Section III, Division 1, Subsection NF

N-359

12-13-82 Weld Connection for Coaxial

12-31-84 Cylinders,Section III, Division

1, Class 1 N-362-2

07-12-84

04-05-87

07-27-87

07-01-88 Pressure Testing of Contain ment Items,Section III,

Division 1, Classes 1, 2, and MC

Alternate Rules for Fillet Weld Dimensions for Socket Welded Fittings,Section III, Division

1, Class 1, 2, and 3 Alternate PWHT for SA-487, Grade CA6NM,Section III,

Division 1 Thermit Brazing or Welding of Nonstructural Attachments,Section III, Division 1 N-412

04-15-85

04-15-88

04-15-91 Alternative Rules for Witness ing the Piping System Pressure 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-414

02-20-86

02-20-89

02-20-92 Tack Welds for Class 1, 2, 3 and MC Components and Piping Supports,Section III,

Division 1

1.84-13 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 Auste

09-05-85 nitic Forgings,Section III, Di vision 1, Classes 1, 2, and 3 Code Case N-383-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Applicants who apply the pro visions of this Case to permit material manufacturers to weld repair austenitic forgings 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,

Division 1 Code Case N-397 was acceptable subject to the fol lowing condition in addition to those conditions speci fied 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, "Devel opment of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Compo nents."

N-421

02-14-85 Brazing Using a Radiant

05-19-85 Energy Source,Section III,

06-30-86 Division 1 N-430

02-28-86 Alternative Requirements for

02-28-89 Welding Workmanship and

02-05-92 Visual Acceptance Criteria for

07-01-93 Class 1, 2, 3 and MC Linear Type and Standard Supports,Section III, Division 1 Code Case N-430 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: (1) The applicant should demon strate 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) should be replaced with the following: "For material 3/8 in. and less nominal thick ness, undercut depth of 1/32 in. on one side of the mem ber 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."

N-442

02-23-87

04-30-90

03-08-92

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. REVISED CODE CASES

Code Cases that were endorsed by the NRC in a prior version of this guide and were superseded by re vised 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, 16 and title.

150817

12-13-71 Allowable Stresses, Design

06-30-75 Intensity 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

16Earlier date-date Code Case was approved by ASME; later dates date revision of Code Case was approved by ASME.

17Code Case 1508 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceptable listing.

1539

11-06-72 (N-30-1) 11-21-77 Metal Bellows and Metal Dia 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 (N-31)

01-14-77

01-07-80

02-14-83

07-18-85 Elastomer Diaphragm Valves,Section III, Class 2 and 3 Code Case 1540-2 (N-31) was 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 referenc ing Safety Analysis Report that the service life of the elastomer diaphragm should not exceed the manufac turer's recommended service life. This recommended service life should not exceed 1/3 of the minimum cycle life as established by the requirements of paragraph 3 of the Code Case. In addition, the service life of the elasto mer diaphragm should not exceed 5 years, and the com bined service and storage life of the elastomer dia phragm should not exceed 10 years.

1541-1

08-13-73 Hydrostatic Testing of Em

09-30-76 bedded Class 2 and Class 3 Piping for Section III

Construction

1541-2

09-30-76 Hydrostatic Testing of Em

05-15-78 bedded Class 2 and Class 3 Piping for Section III, Division

1 Construction

1552

12-18-72 Design by Analysis of Section

08-29-77 III, Class 1 Valves

1553

12-18-72 Upset Heading and Roll

03-03-75 Threading of SA-453 for Bolt ing,Section III

1555

12-18-72 Certification of Safety Relief

01-14-77 Valves on Liquids

1606

11-05-73

12-16-74 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 in terpretation that the stress limit designations of "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.

1.84-14 L

L

1607

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 "Up set," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions appli cable to ASME Code Class 2 and 3 components for fluid systems. These designations should be estab lished and justified in the design specifications.

1609-1 (N-55)

1621-2 (N-62-2)

03-01-76

08-28-78

07-13-81

04-05-84

05-25-77

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 subject to the following condition in addition to those condi tions specified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers 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 conditions spe cified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the pro visions of NCA 4000.

N-62-4

09-05-85 Internal and External Valve

07-27-88 Items,Section III, Division 1,

07-24-89 Class 1, 2 and 3 Code Case N-62-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the pro visions 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 conditions spe cified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the pro visions of NCA 4000.

N-62-6

12-11-89

12-11-92

05-11-94 Internal and External Valve Items,Section III, Division 1, Class 1, 2 and 3 Code Case N-62-6 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet in the provisions of NCA 4000.

1630

(N-77)

11-04-74 External Pressure Charts for

07-10-78 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; and Section VIII, Division 1 and 2

1683

03-03-75

03-01-76 Bolt Holes for Section III, Di 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 fol lowing condition in addition to that specified in the Code Case: The alternate postweld heat treatment should be prequalified along with the applicable weld ing procedure in accordance with ASME Section IX.

1695

04-28-75 Brazing,Section III, Class 3

11-03-75

1701

06-30-75 Determination of Capacities of

03-20-78 Vacuum Relief Valves,Section III, Class MC

1701-1

03-20-78 (N-95-1) 03-19-79

07-09-79

1702

06-30-75

07-11-77 Determination of Capacities of Vacuum Relief Valves,Section III, Division 1 and 2, Class MC

Flanged Valves Larger than 24 inches for Section III, Class 1,

2 and 3 Construction

1.84-15

1720

08-11-75 Weld End Preparation for Sec

03-01-76 tion III, Division 1 Construc tion Code Case 1720 was acceptable subject to the fol lowing condition in addition to those conditions speci fied 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 Sec

11-20-78 tion III, Division 1 Construc tion Code Case 1720-1 was acceptable subject to the following condition in addition to those conditions spe cified 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.

1739-2

08-28-78 Pump Internal Items, Section (N-119-2) 08-25-80

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

1739-3

08-25-80

(N-119-3) 12-01-80

Pump Internal Items,Section III, Division 1, Class 1, 2, and 3

1739-4

12-01-80 Pump Internal Items, Section (N-119-4) 02-20-8414111, Division 1, Class 1, 2,

07-18-85 and 3 N-119-5 07-18-85

09-05-85

03-01-76

01-08-79

01-21-82

01-21-85

01-21-88

07-24-89

1761

04-26-76

01-14-77

01-14-77

01-07-80

04-02-82 N-133-1

04-02-82

05-19-85 Pump Internal Items,Section III, Division 1, Class 1, 2, and 3 Stress Indices for Structural Attachments, Class 1,Section III, Division 1 Use of SB-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves Use of SB-148 Alloy CA954,Section III, Division 1, Class 3 Use of SB-148 Alloys 952 and

954,Section III, Division 1, Class 3 N-133-2 05-19-85 Use of SB-148 Alloys 952 and

07-18-85

954 Section III, Division 1, Class 3

1769

08-13-76 Qualification of NDE Level III

02-16-77 Personnel,Section III,

Division 1

1774

08-13-76 Minimum Wall Thickness for

07-11-77 Class 2 and 3 Valves,Section III, Division 1

1780

09-10-76 Hydrostatic Testing and Stamp

03-10-78 ing of Pumps for Class 1 Construction,Section III, Divi sion 1 Code Case 1780 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: Each licensing application in which the Code Case is to be used should present infor mation that satisfactorily demonstrates that the subas sembly tests adequately simulate the pressure loadings.

Also, the closure fixture for the test subassembly should adequately simulate the rigidity of adjacent sub assemblies 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 in duced during the hydrostatic test of a complete pump assembly. It is not intended that piping reaction load ings be simulated in the hydrostatic testing.

1783

09-10-76 Qualification of Nondestructive

01-14-77 Personnel,Section III,

Division 1 Code Case 1783 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The first sentence of paragraph

(1) should be replaced with the following: "The certifi cation of the Level III nondestructive examination per sonnel 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 Holder, then the verification of such certificate is the responsi bility of the Certificate Holder."

1791

03-17-8018 Projection Resistance Welding (N-154)

09-09-82 of Valve Seats,Section III,

09-05-85 Division 1, Class 1, 2 and 3

12-05-85 Valves

18The Code Case was annulled on January 14, 1980 (ASME mandatory annulment date). It was reinstated on March 17,1980. Because of the cir cumstances 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

1745 (N-122)

1761-1 (N-133)

1797 (N-160)

03-23-77 Finned Tubing for Construc

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 fol lowing conditions in addition to those conditions speci fied in the Code Case. The applicant should indicate 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 re quired to be furnished with the application.

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 conditions specified in the Code Case: The applicant should indi cate 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.

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-214

05-15-78

07-13-81

09-07-82 Use of SA-351, Grade CN7M,

for Valves for Section III, Divi sion 1, Construction N-214-1 09-07-82 Use of SA-351 Grade CN7M,

05-25-83 for Valves,Section III, Divi sion 1 N-237

07-09-79

01-21-82

09-07-82 Hydrostatic Testing of Internal Piping,Section III, Division 1 N-237-1

09-07-82 Hydrostatic Testing of Internal

05-25-83 Piping,Section III, Division 1, Classes 2 and 3 N-260

01-07-80

05-25-83

07-18-85 Weld Repair of SA-182 Type

316 Forgings,Section III, Divi sion 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, Divi sion 1, Classes 1, 2, 3,and MC

Code Case N-260-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Type 308 L welding materials should not be used to repair grade F 316 N forgings be cause of the difference in strength levels.

N-304

06-11-81

04-05-84

07-12-84 Use of 20Cr-25Ni-6Mo (Alloy UNS N08366) Welded Tubes 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 1, Classes 2 and 3 Construction N-304-2

05-19-85 Use of SB-676 20Cr-25Ni-6Mo

12-05-85 (Alloy UNS N08366) Welded Tubes,Section III, Division 1, Classes 2 and 3 N-304-3 12-05-85 Use of SB-676 2OCr-25Ni-6Mo

02-23-87 (Alloy UNS N08366) Plate, Sheet, Strip and Welded Pipes,Section III, Division 1, Classes

2 and 3 N-309

09-17-8419 Identification of Materials for

12-05-85 Component Supports, Section SIII, Division 1 N-318

07-13-81 Procedure for Evaluation of the

02-20-84 Design of Rectangular Cross Section Attachments on Class

2 or 3 Piping,Section III, Divi sion 1 Code Case N-318 was acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug at tachment, (2) the piping system involved, and (3) the location in the system where the Case is to be applied.

N-318-1 20 02-20-84 Procedure for Evaluation of the

07-12-84 Design of Rectangular Cross Section Attachments on Class

2 or 3 Piping,Section III, Divi sion 1

19The Code Case was annulled on May 11, 1984 (ASME mandatory an nulment date). It was reinstated on September 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.

20 'he conditional acceptance was inadvertently omitted in Revision 23 of this guide.

1.84-17

Code Case N-318-1 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.

N-318-2 07-12-84 Procedure for Evaluation of the

09-05-85 Design of Rectangular Cross Section Attachments on Class

2 or 3 Piping,Section III, Divi sion 1 Code Case N-318-2 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.

N-318-3 09-05-85 Procedure for Evaluation of the

07-27-88 Design of Rectangular Cross

12-11-89 Section Attachments on Class

2 or 3 Piping,Section III, Divi sion 1 Code Case N-318-3 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.

N-318-4

12-11-89 Procedure for Evaluation of the

12-11-92 Design of Rectangular Cross

04-28-94 Section Attachments on Class

2 or 3 Piping,Section III, Divi sion 1 Code Case N-318-4 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.

N-319

07-13-81

07-13-84

07-13-87

07-24-89 N-319-1

07-24-89

08-14-90

Alternate Procedure for Evalu ation of Stresses in Butt Weld Elbows in Class 1 Piping, Sec tion III, Division 1 Alternate Procedure for Evalu ation of Stresses in Butt Weld Elbows in Class 1 Piping, Sec tion III, Division 1 N-345

06-17-82 Attachment of AMS 5382

12-13-82 Alloy 31 Seat Rings by Fric tion Welding,Section III, Divi sion 1, Classes 1, 2, and 3 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 Auste

07-18-85 nitic Forgings,Section III, Di vision 1, Classes 1, 2, and 3 Code Case N-383 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants who apply the provi sions of this Case to permit material manufacturers to weld repair austenitic forgings without resolution heat treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.

N-391

11-28-83 Procedure for Evaluation of the

07-30-86 Design of Hollow Circular

07-24-89 Cross Section Welded Attach ments on Class 1 Piping, Sec tion III, Division 1 N-392

11-28-83 Procedure for Evaluation of the

07-30-86 Design of Hollow Circular

07-30-89 Cross Section Welded Attach

12-11-89 ments on Classes 2 and 3 Pip ing,Section III, Division 1 N-392-1

12-11-89 Procedure for Evaluation of the

12-11-92 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 was acceptable subject to the following conditions in addition to those conditions 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 system where the Case is to be applied.

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 fol lowing conditions in addition to those conditions speci fied in the Code Case: (1) The damping values specified

1.84-18 K

may be used in analyzing piping response for seismic and other dynamic loads being filtered through build ing structures provided response mode frequencies are

___

limited to 33 Hz and below. Within this range, the Code Case damping should be used completely and consis tently, 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 val ues 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 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 recon ciliation work or for support optimization of existing designs, the effects of increased motion on existing clearances and on line mounted equipment should be checked. (4) This Code Case is not appropriate for ana lyzing 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 applicable to piping in which stress corrosion cracking has occurred unless a case specific evaluation is made and is reviewed by the NRC

staff.

N-453

12-07-87 Nickel-Chromium-Molybde

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

11-30-88

12-16-91

04-30-92 N-454

12-07-87

12-03-90

04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925) Seamless and Welded Pipe for Class 2 and 3 Construction,Section III, Divi sion 1 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925) Wrought Fit tings for Class 2 and 3 Construction Section III, Divi sion 1 N-455

12-07-87

12-03-90

04-30-92 Nickel-Chromium-Molybde num-Copper Stainless Steel (UNS N08925) Forged Flanges and Fittings for Class 2 and 3 Construction Section III, Divi sion 1

4. UNACCEPTABLE CODE CASES

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. 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.

D. IMPLEMENTATION

The purpose of this section is to provide informa tion to applicants regarding the use of this regulatory guide.

1. Except for those Code Cases that have been an nulled by action of the ASME, the NRC staff has found the Code Cases listed in this regulatory guide under Regulatory Position 1 acceptable for ap propriate use. Other Code Cases may be considered for use in accordance with footnote 6 of the Codes and Standards rule, 10 CFR 50.55a.

2. Components ordered to a specific version of a Code Case need not be changed because a subsequent re vision to the Code Case is listed as the approved version in this guide.

3.

Components ordered to a Code Case that was pre viously approved for use need not be changed be cause the Code Case has been subsequently an nulled.

4. Code Cases on the approved list may be applied to components that were in the process of construc tion prior to the effective date of the Code Case within the limits specified in the Code Case and ap plicable regulations or recommended in other regu latory guides.

1.84-19

APPENDIX

NUMERICAL LISTING OF CODE CASES

N-62-7 N-309-1 N-122-2 N-313 N-133-3 N-315 N-154-1 N-318-5 N-155-2(1792-2)

N-345-1 N-160-1 N-368 N-192-2 N-369 N-240

N-391-1 N-241 N-392-2 N-243 N-393 N-284 N-394 N-292 N-395 N-304-4 N-410

N-411-1 N-420

N-433 N-452 N-453-1 N-454 N-455 N-464 N-476 N-505 N-511 N-520

VALUE/IMPACT STATEMENT

A draft value/impact statement was published with the draft of this guide when it was published for public comment (Task DG-1048, May 1997). No changes were necessary, so a separate value/impact statement for Revision 31 of Regulatory Guide 1.84 has not been prepared. A copy of the draft value/im pact statement is available for inspection or copying for a fee in the NRC's Public Document Room at 2120 L Street NW., Washington, DC, under Task DG-1048.

1.84-20

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