Regulatory Guide 1.85: Difference between revisions

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{{Adams
{{Adams
| number = ML13038A104
| number = ML003740365
| issue date = 11/30/1990
| issue date = 05/31/1999
| title = 7, Materials Code Case Acceptability ASME Section III Division 1
| title = 1, (Draft Was Issued as DG-1049), Materials Code Case Acceptability ASME Section III, Division 1
| author name =  
| author name =  
| author affiliation = NRC/RES
| author affiliation = NRC/RES
Line 10: Line 10:
| license number =  
| license number =  
| contact person =  
| contact person =  
| document report number = RG-1.085, Rev. 27
| document report number = RG-1.85, Rev 31
| document type = Regulatory Guide
| document type = Regulatory Guide
| page count = 20
| page count = 23
}}
}}
{{#Wiki_filter:U.S. NUCLEAR REGULATORY COMMISSION                                                                          Revision 27 November 1990
{{#Wiki_filter:
                              REGULATORY GUIDE
                                OFFICE OF NUCLEAR REGULATORY RESEARCH
                                                          REGULATORY GUIDE 1.B5 MATERIALS CODE CASE ACCEPTABILITY
                                                        ASME SECTION III DIVISION I


==A. INTRODUCTION==
==A. INTRODUCTION==
or modified as necessary to ensure a quality product in Section 50.55a, "Codes and Standards," of                                     keeping with the required safety function.
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.


10 CFR Part 50, "Domestic Licensing of Production                                          Criterion 30, "Quality of Reactor Coolant Pres- and Utilization Facilities," requires, in part, that com-                            sure Boundary," of the same appendix requires, in ponents of the reactor coolant pressure boundary be                                  part, that components that are part of the reactor designed, fabricated, erected, and tested in accor-                                    coolant pressure boundary be designed, fabricated, dance with the requirements for Class 1 components                                    erected, and tested to the highest quality standards of Section III, "Nuclear Power Plant Components,"'                                    practical.
Footnote 6 to 10 CFR 50.55a states that the use of spe 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.


of the American Society of Mechanical Engineers Appendix B, "Quality Assurance Criteria for Nu- (ASME) Boiler and Pressure Vessel Code or equiva- clear Power Plants and Fuel Reprocessing Plants," to lent quality standards. Footnote 6 to §50.55a states
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
                                                                                        10 CFR Part 50 requires, in part, that measures be that the use of specific Code Cases may be authorized established for the control of special processing of by the Commission upon request pursuant to materials and that proper testing be performed.
1Copies may be obtained from theAmerican Society of Mechanical Engi neers, Three Park Avenue, New York, New York 10016-599


§50.55 a (a) (2) (ii), which requires that proposed alter- natives to the described requirements or portions                                          This regulatory guide              lists those Section III
===0. Phone ===
  thereof provide an acceptable level of quality and                                    ASME Code Cases oriented                  to materials and testing safety.                                                                              that are generally acceptable            to the NRC staff for im- plementation in the licensing            of light-water-cooled nu- General Design Criterion 1, "Quality Standards clear power plants.
(212)591-8500; fax (212)591-8501.


and Records," of Appendix A, "General Design Cri- teria for Nuclear Power Plants," to 10 CFR Part 50                                          Any information collection activities mentioned requires, in part, that structures, systems, and compo-                              in this regulatory guide are contained as requirements nents important to safety be designed, fabricated,                                  in 10 CFR Part 50, which provides the regulatory ba- erected, and tested to quality standards commensu-                                    sis for this guide. The information collection require- rate with the importance of the safety function to b(                                ments in 10 CFR Part 50 have been cleared under performed. Where generally recognized codes an                                      OMB Clearance No. 3150-0011.
Revision 31 May 1999
3UIDE
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.


standards are used, Criterion 1 requires that they b e identified and evaluated to determine their applicabi I-                                                    
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 materials and testing that are generally acceptable to the NRC staff for implementa tion in the licensing of light-water-cooled nuclear pow er plants. This guide is being revised to update the NRC
staff positions on new Code Cases, revised Code Cases, and annulled Code Cases subsequent to Revision 30 of the guide 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 availableto 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's regulations, techniques usedbythestaff in evaluating specificproblemsorpos-
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 guides are not substitutes for regulations, and compliance
4. Environmental and Siting
9. Antitrust and Financial Review with them is not required. Methods and solutions differentfrom those set out in theguides
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.
 
Singlecopies of regulatory guides may be obtained free of charge bywriting to the Repro This guide was issued after consideration of comments received from the public. Com- duction and Distribution Services Section, Office of the Chief Information Officer, U.S. Nu ments and suggestionsfor improvements in these guides areencouraged atall 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 emall 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 20555-0001.
 
Royal Road, Springfield, VA 22161.
 
U.S. NUCLEAR REGULATORY COMMISSION
REGULATORY (
OFFICE OF NUCLEAR REGULATORY RESEARCH
REGULATORY GUIDE 1.85 (Draft was issued as DG-1 049)
MATERIALS 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==
==B. DISCUSSION==
ity, adequacy, and sufficiency and be supplemente d                                        The Boiler and Pressure Vessel Committee of the le-        ASME publishes a document entitled "Code Cases."'
The Boiler and Pressure Vessel Committee of the ASME publishes a document entitled "Code Cases."1 Generally, the individual Code Cases that make up this document explain the intent of Code rules or provide for alternative requirements under special circum stances.
            'Copies may be obtained from the American Society of M
        chanical Engineers, United Engineering Center, 345 East 41)'th                      Generally, the individual Code Cases that make up Street, New York, New York 10017.                                                  this document explain the intent of Code rules or USNRC REGULATORY GUIDES                                      The guides are Issued in the following ten broad divisions, Regulatory Guides are issued to describe and make available to the pub- lic methods acceptable to the NRC staff of Implementing specific parts of the Commission's regulations, to delineate techniques used by the                1. Power Reactors                      6.  Products staff in evaluating specific problems or postulated accidents, or to pro-          2. Research and Test Reactors          7. Transportation vide guidance to applicants. Regulatory Guides are not substitutes for            3. Fuels and Materials Facilities      8.  Occupational Health regulations, and compliance with them is not required. Methods and                4. Environmental and Siting            g.  Antitrust and Financial Review solutions different from those set out in the guides will be acceptable If        5. Materials and Plant Protection    10.  General they provide a basis for the findings requisite to the issuance or continu- ance of a permit or license by the Commission.


Copies of issued guides may be purchased from the Government Printing This guide was issued after consideration of comments received from                Office at the current GPO price. Information on current GPO prices may the public. Comments and suggestions for improvements in these                    be obtained by contacting the Superintendent of Documents, U.S.
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.


guides are encouraged at all times, and guides will be revised, as ap-            Government Printing Office, Post Office Box 37082, WashIngton, UC
The Code Cases listed in this guide are limited to those cases applicable to Section III that are oriented to ward materials and testing.
              propriate, to accommodate comments and to reflect new Information or              20013-7082, telephone (202)275-2060 or (202)275-2171.


experience.
All published Code Cases in the area of materials and testing 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.


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


provide for alternative requirements under special              tinuing change in the status of Code Cases, it is circumstances.                                                  planned that this guide will require periodic updating to accommodate new Code Cases and any revisions Most Code Cases are eventually superseded by of existing Code Cases.
no conflicts with other recommended limitations re sulting from Code Case usage.


revision to the Code and then are annulled by action of the ASME. In such cases, the intent of the annulled Code Case becomes part of the revised                             
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==
==C. REGULATORY POSITION==
Code, and therefore continued use of the Code Case
1. ACCEPTABLE CODE CASES
                                                                          1. The Section III ASME Code Cases 2 listed intent is sanctioned under the rules of the Code. In below (by, number, date of ASME approval, and other cases, the Code Case is annulled because it is title) are acceptable to the NRC staff for application no longer acceptable or there is no further in the construction of components for light-water- requirement for it. A Code Case that was approved cooled nuclear power plants. Their use is acceptable for a particular situation and not for a generic within the limitations stated in the "Inquiry" and application should be used only for construction of
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 nuclear power plants. Their use is acceptable within the limitations stated in the "Inquiry" and "Reply" sections of each individual Code Case, within the limitations of such NRC or other requirements as may exist, and within the additional limitations recommended by the NRC staff given with the individual Code Cases in the listing. The categorization of Code Cases used in this guide is intended to facilitate the Code Case listing and is not intended to indicate a limitation on its usage.
                                                                    "Reply" sections of each individual Code Case, the approved situation because annulment of such a within the limitations of such NRC or other require- Code Case could result in construction that would not ments as may exist, and within the additional limita- meet Code requirements.


tions recommended by the NRC staff given with the The Code Cases listed in this guide are limited to        individual Code Cases in the listing. The categoriza- those cases applicable to Section III that are oriented          tion of Code Cases used in this guide is intended to toward materials and testing.                                    facilitate the Code Case listing and is not intended to indicate a limitation on its usage.
a. Materials-Oriented Code Cases (Code Case Number, Date of ASME Approval, 3 and title)
(1)
N-7-1 Code Cases Involving Plate
12-13-82 High Yield Strength Steel, Sec
02-20-86 tion III, Division 1, Class 1
02-20-89 Vessels
02-05-92
(2) Code Cases Involving Pipe and Tubes N-20-3
11-30-88 SB-163 Nickel-Chromium-Iron
12-16-91 Tubing (Alloy 600 and 690)
and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0
Ksi and Cold Worked Alloy
800 at a yield strength of 47.0
Ksi, Section III, Division 1, Class 1
2A numerical listing of the Code Cases appears in the appendix.


All published Code Cases in the area of materials and testing that are applicable to Section III of the                     a.  Materials-oriented Code Cases (Code Case
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.
* JCode and were in effect on March 8, 1989, were                  number, date of ASME approval, 3 and title):
  reviewed for inclusion in this guide. In addition to the listing of acceptable Code Cases, this revision of the                      (1) Code Cases involving plate:
  guide includes listings of (1) Code Cases that were identified as acceptable in a prior version of this            N-7-1            12-13-82    High Yield Strength Steel, regulatory guide and that were annulled after the                               02-20-86      Section III, Division 1, Class 1 original issuance of this guide (June 1974) and                                              Vessels
  (2) Code Cases that were identified as acceptable in                  Code Case N-7-1 is acceptable subject to the fol-                  i.


a prior version of this regulatory guide and that were                lowing condition in addition to those conditions superseded by revised Code Cases after the original                    specified in the Code Case: The information re- issuance of this guide (June 1974). Code Cases that                    quired to be developed by Note 1 in the Code are not listed herein are either not endorsed or will                  Case should be provided in each referencing require supplementary provisions on an individual                      Safety Analysis Report.
1.85-2 Vt L


basis to attain endorsement status.
N-188-1
05-15-78
07-13-81
07-13-84
07-13-87
08-14-90
08-14-93 N-294
08-25-80
05-25-83
07-30-86
07-30-89
07-27-92 N-404
04-05-84
04-05-87
12-11-89
12-11-92 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 SB-148 Alloy 952 and 954, and SB-62 Alloy 836 Fittings, Section III, Division 1, Class 2 Annealed Alloy UNS N06625 Over UNS N06600 Bimetallic Tubing, Section III, Division 1, Class 1 Code Case N-404 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: The outside layer of the bimetal lic tubing should be limited to a minimum of 5 percent and to a maximum of 40 percent of the wall thickness.


(2)  Code Cases involving pipe and tubes:
The tolerance on the outside layer of material should not exceed -0.000 to +0.007 inches of the specified de sign wall thickness.
        The endorsement of a Code Case by this guide constitutes acceptance of its technical position for            1474-1        10-29-71      Integrally Finned Tubes for applications not precluded by regulatory or other              (N-17)          01-08-79      Section III
  requirements or by the recommendations in this or                              01-21-82 other regulatory guides. Contingent endorsement is                              01-21-85 indicated in regulatory position C.l.a for specific                            01-21-88 cases. However, it is the responsibility of the user to        N-20-3          11-30-88      SB- 163          Nickel-Chromium- make certain that no regulatory requirements are                                              Iron Tubing (Alloy 600 and violated and that there are no conflicts with other                                          690)          and          Nickel-Iron- recommended limitations resulting from Code Case                                              Chromium Alloy 800 at a usage.                                                                                        Specified        Minimum            Yield Acceptance or endorsement by the NRC staff                                              Strength of 40.0 Ksi and applies only to those Code Cases or Code Case                                                Cold Worked Alloy 800 at a revisions with the date of ASME approval as shown                                            yield strength of 47.0 Ksi, in the regulatory position of this guide. Earlier or                                          Section III,            Division        1, later revisions of a Code Case are not endorsed by                                            Class 1 this guide. New Code Cases will require evaluation by the NRC staff to determine if they qualify for                      2 A numerical listing of the Code Cases appears in the ap- inclusion in the approved list. Because of the con-              pendix.


3 When more than one dale is given, the earlier date is that on which the Code Case was approved by the ASME, and the later date(s) is that
N-418-1
      *Lines indicate substantive changes from Revision 26.        on which the Code Case was reaffirmed by the ASME.
07-30-86 Use of Seamless Ni-Fe-Cr-Mo
07-30-89 Cu Low Carbon (UNS N08028
07-27-92 and UNS N08904) Tubing, Section III, Division 1, Classes
2 and 3 N-439
02-23-87 Use of 20Cr-18Ni-6Mo (Alloy
12-11-89 UNS S31254) Forgings,
12-11-92 Plate, Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction, Section III,
Division 1 N-441-1
11-25-92 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction, Section III,
Division 1 N-466-1
04-30-90 Modified 9Cr-iMo Material,
02-12-93 Section III, Division 1, Classes
1, 2, and 3 N-502
02-05-92 SA-268, Grade 26-3-3 (UNS
S44660) Section III, Division 1, Classes 2 and 3
(3) Codes Cases Involving Bars and Forgings
1337-11
05-15-78 Special Type 403 Modified (N-4-11) 07-13-81 Forgings or Bars, Section III,
07-13-84 Division 1, Class 1 and CS
07-13-87
08-14-90
08-14-93 N-370-2
12-05-85
12-05-88
12-16-91 Modified SA-705 Grade XM-13 Forgings, Section III,
Division 1 N-469
03-08-89 Martensitic Stainless Steel for
04-30-92 Class 1, 2, and 3 Components, Section III, Division 1
(4) Code Cases Involving General Usage N-60-5
02-15-94 Material for Core Support Structures, Section III,
Division 1 Code Case N-60-5 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: 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. The maximum yield strength of strain hardened austenitic stainless steel should not exceed
90,000 psi in view of the susceptibility of this material to environmental cracking.


1.85-2
N-71-16 02-12-93 Additional Materials for Sub section NF, Classes 1, 2, 3 and MC Component Supports Fabri cated by Welding, Section III,
Division 1 Code Case N-71-16 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the mate rial 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, "Alter-
1.85-3


1527          06-26-724  Integrally Finned Tubes, Sec-          1337-11      05-15-78    Special Type 403 Modified (N-26)        01-08-79  tion III                                (N-4-11)    07-13-81    Forgings or Bars, Section III,
nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pre sented 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 ex empted 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 shall be at least 1000'F (540'C) and shall not exceed 1150'F
              01-21-82                                                        07-13-84    Division 1, Class 1 and CS
(620'C) for Class 1 and Class 2 material and 1175°F
              01-21-85                                                        07-13-87
(640' C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30
              01-21-88                                          N-367        02-14-83    SA-372 Type V, Grade 1, N-188-1        05-15-78  Use of Welded Ni-Fe-Cr-Mo-                          02-19-86    Class B, Section III, Divi-
minutes for 1/2 inch or less, 1 hour per inch for thick ness over 1/2 inch to 5 inches, and 5 hours plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes
                07-13-81  Cu (Alloy 825) and Ni-Cr-                                      sion 1
1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.
                07-13-84  Mo-Cb (Alloy 625) Tubing,              N-370-2      12-05-85  Modified      SA-705    Grade
                07-13-87  Section III, Division 1, Class 2                    12-05-88  XM-13 Forgings, Section III,
                          and 3                                                          Division 1 N-224-1         05-11-81  Use of ASTM A500 Grade B              N-469        03-08-89  Martensitic Stainless Steel for
                04-05-84  and ASTM A501 Structural                                        Class 1, 2, and 3 Compon-
                04-05-87  Tubing for Welded Attach-                                      ents, Section III, Division I
                          ments for Section III, Class 2,
                                                                            (4)   Code Cases involving general usage:
                          3, and MC
N-294          08-25-80  SB-148 Alloy 952 and 954,              N-60-3        09-05-85  Material for Core Support
                05-25-83  and SB-62 Alloy 836 Fittings,                        07-27-88    Structures, Section III, Divi-
                07-30-86  Section III, Division 1, Class 2                                sion 1 N-379-1         07-18-85  Bimetallic Tubing Section III,
                                                                      Code Case N-60-3 is acceptable subject to the
                07-18-88  Division 1, Class 1 following condition in addition to those condi- N-404          04-05-84  Annealed Alloy UNS N06625 tions specified in the Code Case: Welding of age-
                04-05-87  Over UNS N06600 Bimetallic hardenable alloy SA-453 Grade 660 and SA-637 Tubing, Section III, Division Grade 688 should be performed when the mate-
                          1, Class 1 rial is in the solution-treated condition. For Code Case N-404 is acceptable subject to the fol-              SA-479 material, the maximum yield strength lowing conditions in addition to those conditions              should not exceed 90,000 psi in view of the sus- specified in the Code Case: The outside layer of                ceptibility of this material to environmental the bimetallic tubing should be limited to a mini-             cracking.


mum of 5 percent and to a maximum of 40 per- cent of the wall thickness. The tolerance on the          N-71-15        12-16-86  Additional Materials for Sub- outside layer of material should not exceed                                          section NF, Classes 1, 2, 3
1759-1
      -0.000 to +0.007 inches of the specified design                                      and MC Component Supports wall thickness.                                                                      Fabricated by Welding, Sec- tion III, Division 1 N-418-1        07-30-86  Use of Seamless Ni-Fe-Cr- Code Case N-71-15 is acceptable subject to the Mo-Cu Low Carbon (UNS
05-15-78 Material for Internal Pressure (N-131-1) 07-13-81 Retaining Items for Pressure
                                                                      following condition in addition to those condi- N08028 and UNS N08904)                    tions specified in the Code Case: The maximum Tubing, Section III, Division measured ultimate tensile strength (UTS) of the
12-11-81 Relief Valves, Section III,
                            1, Classes 2 and 3                        component support material should not exceed N-439          02-23-87    Use of 20Cr-18Ni-6Mo (Alloy                170 Ksi in view of the susceptibility of high- UNS S31254) Forgings, Plate,                strength materials to brittleness and stress corro- Seamless and Welded Pipe,                  sion cracking. Certain applications may exist and Welded Tube, Class 2 where a UTS value of up to 190 Ksi could be and 3 Construction, Section                considered acceptable for a material and, under III, Division 1                            this condition, the Design Specification should N-441          02-23-87  Use of 20Cr-l8Ni-6MNo (Alloy              specify impact testing for the material. For these UNS S31254) Fittings, Class 2              cases, it should be demonstrated by the applicant and 3 Construction, Section                that (1) the impact test results for the material III, Division 1                            meet code requirements and (2) the material is N-466          03-08-89  Modified 9Cr-iMo Material,                not subject to stress corrosion cracking by virtue Section    III,  Division  1,          of the fact that (a) a corrosive environment is not Classes 1, 2, and 3                        present and (b) the component that contains the
12-05-84 Division 1, Class 1, 2, and 3  
              (3)  Codes    Cases    involving  bars  and            material has essentially no residual stresses or assembly stresses, and it does not experience fre- forgings:
12-05-87
                                                                      quent sustained loads in service. In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alternate Atmos-
12-03-90
    4 Corrected date.                                                phere Exposure Time Periods Established by
12-03-93 Code Case 1759-1 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants using this Case should also use Code Case 1711 for the design of pres sure relief valves.
                                                            1.85-3


Test," of the AWS D. 1.1 Code for the evidence                    USNRC Standard Review Plan (NUREG-0800)
cated Without Welding, Section III, Division 1 Code Case N-249-13 is acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph
  presented to and accepted by the Authorized In-                  or on a case-by-case basis. The following is to be spector concerning exposure of electrodes for                    added to paragraph (5) of the Case: For these longer periods of time. Paragraph 16.2.2 is not                  cases, it should be demonstrated by the owner acceptable as written and should be replaced                      that (1) the impact test results for the material with the following: When not exempted by                          meet Code requirements and (2) the material is
5.3.4 of the USNRC Standard Review Plan (NU
    16.2.1, above, the postweld heat treatment shall                not subject to stress corrosion cracking by virtue be performed in accordance with NF-4622 ex-                      of the fact that (a) a corrosive environment is not cept that for ASTM A-710 Grade A material, it                    present and (b) the component that contains the shall be at least 1000'F (540"C) and shall not.                  material has essentially no residual stresses or as- exceed 1150'F (620'C) for Class 1 and Class 2                    sembly stresses, and it does not experience fre- material and 11750F (640'C) for Class 3 mate-                    quent sustained loads in service.
REG-0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, it should be demonstrated by the owner that (1)  
the impact test results for the material meet Code re quirements and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corro sive 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.


rial. The new holding time at temperature for weld thickness (nominal) shall be 30 minutes for          N-265-1         05-19-85   Modified SA-487 Castings,
N-265-1  
    1/2 inch or less, 1 hour per inch for thickness                          05-19-88    Section III, Division 1, Class 1 over 1/2 inch to 5 inches, and 5 hours plus 15            N-337-1         07-18-85    Use of ASTM B525-70 Grade minutes for each additional inch over 5 inches.                          07-18-88    II, Type II, Sintered Austen- The fracture toughness requirements as listed in                                      itic Stainless Steel for Class 2, this Code Case apply only to piping supports and                                      3, and MC Component Stan- not to Class 1, 2, and 3 component supports.                                          dard Supports, Section III,
05-19-85  
    The fracture toughness of Classes 1, 2, and 3                                        Division 1 component supports shall be characterized in ac-         N-348-1        09-07-855 Use of SA-574 Socket Head cordance with paragraph 5.3.4 of the USNRC                                02-20-86 Cap Screws, Section III, Divi- Standard Review Plan (NUREG-0800) or on a                                            sion I
05-19-88
    case-by-case basis.                                              Code Case N-348-1 is acceptable subject to the following condition in addition to those condi- tions specified in the Code Case: Applicants
03-14-91
1759-1      05-15-78  Material for Internal Pressure (N-131-1)    07-13-81  Retaining Items for Pressure                should justify in their Safety Analysis Reports why use of these socket head cap screws will not
03-14-94 N-438-3
            12-11-81  Relief Valves,     Section III,                                                                     7°,-
07-27-92 N-440
                                                                                                                              \.
02-23-87
                                                                      result in early failure from stress corrosion
12-11-89
            12-05-84  Division 1, Class 1, 2, and 3 cracking.
12-11-92 Modified SA-487 Castings, Section III, Division 1, Class 1 UNS N08367 Material, Section III, Division 1, Class 2 and 3 Construction Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction, Section III, Division 1 U
N-443-1  
03-08-89 High Yield Strength Cr-Mo
04-30-92 Steel, Class 1 Components, Section III, Division 1 N-205
05-15-78
07-13-81
07-13-84
07-13-87
08-14-90
08-14-93 N-246-2 05-25-83
07-30-86
07-30-89
07-27-92 N-249-13 05-11-94 Use of Ductile Iron SA-395 for Section III, Division 1, Class 3 Construction SB-169, Alloy C61400, Sec tion III, Division 1, Class 3 N-474-2
12-09-93 N-492-1  
05-11-94 N-497-1  
12-09-93 Additional Material for Subsec tion NF, Classes 1, 2, 3, and MC Component Supports Fabri- Design Stress Intensities and Yield Strength Values for UNS
N06690 With a Minimum Spe cified Yield Strength of 35 ksi, Class 1 Components, Section III, Division 1 Grade 9 Titanium Alloy, Sec tion III, Division 1, Class 1, 2, and 3 Use of Fe-Ni-Cr-Mo-N
(CN-3MN) Cast Materials, Sec tion III, Division 1, Class 2 and  
3 Construction
1.85-4


12-05-87 Code Case 1759-1 is acceptable subject to the            N-438-1       03-08-89    Fe-24.5Ni-21Cr-6.SMo-0.2N
b. Testing-oriented Code Cases
    following condition in addition to those condi-                                       (Alloy UNS N08367) Seam- tions specified in the Code Case: Applicants us-                                     less and Welded Pipe, Tube, ing this Case should also use Code Case 1711 for                                      Plate, Bar, Fittings, and Forg- ings, Class 2 and 3 Construc- the design of pressure relief valves.
(1) Code Case Involving Plates
(2) Code Case Involving Bars and Forgings N-329
12-11-81 Examination of Bar Material,
12-05-84 Section III, Division 1, Class 1
12-05-87  
12-03-90
12-03-93
(3) Code Case Involving Pipe and Tubes Code Case Involving General Usage
07-16-82 Use of Subsize Charpy V
05-19-85 Notch Specimens, Section
05-19-88 III, Division 1  
03-14-91
03-14-94
1334-3 (N-2)
1335-10
(N-3-10)
04-29-74
01-08-79
01-01-81
08-28-78
08-28-81
09-16-84 Requirements for Corrosion Resisting Steel Bars and Shapes, Section III
Requirements for Bolting Materials, Section III
N-5-1
12-13-82 Nickel Chromium Age Harden
12-13-85 able Alloys (Alloy X750),
Section III, Division 1, Classes
1, 2, 3, MC, and CS
1345-2 (N-6)
1395-4 (N-9-4)
03-09-72 Requirements for Nickel
03-01-79 Molybdenum-Chromium-Iron Alloys, Section III
01-08-79 SA-508, Class 2 Forgings with
07-01-82 Modified Manganese Content, Section III
N-484-1
12-16-91 Real Time Radioscopic Ex amination of Welds, Class 1 Components, Section III, Divi sion 1 N-510
12-09-93 Borated Stainless Steel for Class CS Core Support Struc tures and Class 1 Components, Section III, Division 1 N-525
12-09-93 Design Stress Intensities and Yield Strength Values for UNS
N06690 with a Minimum Speci fied Yield Strength of 30 Ksi, Class 1 Components, Section III, Division 1


tion, Section III, Division 1 N-440          02-23-87    Use of 20Cr-18Ni-6Mo (Al- N-205        05-15-78  Use of Ductile Iron SA-395                                        loy UNS J93254) Castings,
===2. ANNULLED CODE CASES ===
            07-13-81  for Section III, Division 1,                                     Class 2 and 3 Construction,
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 that were annulled on or after July 1, 1974, are listed in the following by number, effective dates, 4 and title.5
            07-13-84  Class 3 Construction                                              Section III, Division 1
1141-1  
            07-13-87                                          N-443-1        03-08-89    High Yield Strength Cr-Mo N-246-2      05-25-83  SB-169, Alloy C61400, Sec-                                        Steel, Class 1 Components,
08-31-61 Foreign Produced Steel  
            07-30-86  tion III, Division 1, Class 3                                    Section III, Division 1 N-249-9      12-16-86  Additional Material for Sub-          N-459          05-04-88    SA-508 Basic Oxygen-Ladle section NF, Classes 1, 2, 3,                                      Furnace Process for Code and MC Component Supports                                        Construction, Section III, Di- Fabricated Without Welding,                                      vision 1 Section III, Division 1                N-470          03-08-89    Class MC Material Require- ments [NE-2121(c)], Section Code Case N-249-9 is acceptable subject to the                                      III, Division 1 following conditions in addition to those condi- tions specified in the Code Case: The fracture                      b. Testing-oriented Code Cases:
07-23-76
    toughness requirements apply only to piping sup-
1332-7 (N-1-7)
                                                                  5 ports and not to Classes 1, 2, and 3 component                Code Case N-348 was annulled on 9-7-85. It was rein- supports. The fracture toughness of Classes 1, 2,         stated as N-348-1 on 2-20-86. Because of the circumstances and because there were no changes in the Code Case, the NRC
01-08-79 Requirements for Steel Forg
    and 3 component supports should be character-            considers that the Code Case was in effect during the period ized in accordance with paragraph 5.3.4 of the           9-7-85 through 2-20-86.
07-01-82 ings, Section III, Division 1
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.


1.85-4
5Code Cases 1401-1,1493-1, and 1599, which were listed in the original issue of this guide, were annulled by ASME action prior to July 1, 1974.


(1) Code Case involving plates:                          1407-3       07-01-74     Time of Examination for (N-10)       01-08-79     Classes 1, 2, and 3, Sec-
1407-3  
                    (2)    Code Case involving bars and forgings:                          01-21-82     tion III Vessels N-329            12-11-81    Examination of Bar Material,                          09-17-84
07-01-74 (N-10)  
                        12-05-84    Section III, Division 1, Class 1                      09-17-87
01-08-79  
                        12-05-87                                            1412-4       11-03-75     Modified High Yield Strength I                                                                                      01-01-77     Steel for Section I1l, Division
01-21-82  
                    (3) Code Case involving pipe and tubes:                                            1, Class 1 Vessels
09-17-84  
        1755-1        01-14-77    Alternative Rules for Exami-                  Code Case 1412-4 was acceptable subject to the (N-127)        01-07-80    nation of Welds in Piping,                    following condition in addition to those condi-
09-17-87  
                        02-14-83    Section III, Class 1 and 2                    tions specified in the Code Case: The informa-
1412-4  
                        02-20-86    Construction                                  tion required to be developed by Note 1 in the Code Case should be provided in each referenc-
11-03-75  
                    (4)  Code Case involving general usage:                      ing Safety Analysis Report. The material given in the Inquiry section of the Code Case should be N-351          07-16-82    Use of        Subsize    Charpy              SA-508, Class 4b, instead of SA-508, Class 4.
01-01-77 Time of Examination for Classes 1, 2, and 3, Section III
Vessels Modified High Yield Strength Steel for Section III, Division  
1, Class 1 Vessels Code Case 1412-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.


05-19-85    V-Notch Specimens, Section I
The material given in the Inquiry section of the Code Case should be SA-508, Class 4b, instead of SA-508, Class 4.
                        05-19-88    I11, Division I                          1414-5        08-29-77    High Yield Strength Cr-Mo (N-11-5)      08-29-80    Steel for Section III, Division
              2. Code Cases that were endorsed by the NRC                                                1, Class 1 Vessels in a prior version of this guide and were later                            Code Case 1414-5 was acceptable subject to the annulled by action of the ASME should be                                  following condition in addition to those condi- considered as deleted from the list of acceptable                        tions specified in the Code Case: The informa- Code Cases as of the date of the ASME action that                          tion required to be developed by Note 1 in the approved the annulment. Such Code Cases that were                          Code Case should be provided in each referenc- annulled on or after July 1, 1974, are listed in the                      ing Safety Analysis Report.


6          7 following by number, effective dates, and title.
1414-5 (N-11-5)
08-29-77 High Yield Strength Cr-Mo
08-29-80 Steel for Section III, Division
1, Class 1 Vessels Code Case 1414-5 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.


1423-2       03-09-72     Wrought Type 304 and 316
1423-2  
                                                                                          07-01-77     with Nitrogen Added, Sec-
03-09-72 Wrought Type 304 and 316  
. i    1141-1        08-31-61    Foreign Produced Steel                                              tions I, III, VIII, Division 1
07-01-77 with Nitrogen Added, Sections I, III, VIII, Division 1 and 2 Code Case 1423-2 was acceptable subject to com pliance with the recommendations contained in Regu latory Guides 1.31, "Control of Ferrite Content in Stainless Steel Weld Metal," and 1.44, "Control of the Use of Sensitized Stainless Steel."
                      07-23-76                                                                        and 2
1.85-5
        1332-7        01-08-79    Requirements for Steel Forg- Code Case 1423-2 was acceptable subject to (N-1-7)        07-01-82    ings, Section III, Division 1                compliance with the recommendations contained
(4)  
        1334-3        04-29-74    Requirements for Corrosion- in Regulatory Guides 1.31, "Control of Ferrite (N-2)          01-08-79    Resisting Steel Bars and                      Content in Stainless Steel Weld Metal," and
N-351
                      01-01-81    Shapes, Section III                          1.44, "Control of the Use of Sensitized Stainless
      1335-10        08-28-78    Requirements        for    Bolting Steel."
      (N-3-10)        08-28-81    Materials, Section III
                      09-16-84                                              1434-1       03-09-72    Postweld Heat Treatment of N-5-1          12-13-82    Nickel Chromium Age Hard-                              01-01-78    SA-487      Class    8N    Steel
                      12-13-85    enable Alloys (Alloy X750),                                          Castings, Section III
                                  Section      III,    Division    1,      1456-2        06-25-73 Substitution        of Ultrasonic Classes 1, 2, 3, MC, and CS              (N-15)        03-01-79 Examination for Progressive
      1345-2          03-09-72    Requirements        for Nickel-                                      Penetrant or Magnetic Par- (N-6)          03-01-79    Molybdenum-Chromium-Iron                                            ticle Examinations of Partial Alloys, Section III                                                  Penetration      and      Oblique
      1395-4          01-08-79    SA-508, Class 2 Forgings with                                      Nozzle Attachment Welds, (N-9-4)         07-01-82    Modified Manganese Con-                                              Section III
                                  tent, Section III                        1475-18        03-02-74 Ferritic-Austenitic          Stainless
                                                                                          07-01-75 Steel Seamless Tubes for
          6                                                                                            Section III, Class 2 and 3 Earlier date-date Code Case was approved by ASME; later date-date Code Case was annulled. Where more than two                                            Construction dates appear, the last date is the date that the Code Case was        1498-1        11-06-72 SA-508-Class          2    and    3, annulled. The middle date (or dates) was the date of reaf-            (N-22)        01-08-79 Minimum Tempering Tem- firmation of the Code Case.


7Code Cases 1401-1, 1493-1, and 1599, which were listed
1434-1  
                                                                                          07-01-82 perature, Section III
03-09-72 Postweld Heat Treatment of
      in the original issue of this guide, were annulled by ASME              eCode Case was annulled on date as indicated, but the an- action prior to July 1, 1974.                                        nulment was first so indicated in Revision 12 of this guide.
01-01-78 SA-487 Class 8N Steel Cast ings, Section III
cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.


1.85-5
1456-2 (N-15)
06-25-73 Substitution of Ultrasonic Ex
03-01-79 amination for Progressive Penetrant or Magnetic Particle Examinations of Partial Pene tration and Oblique Nozzle At tachment Welds, Section III
1474-1
10-29-71 (N-17)
01-08-79
01-21-82
01-21-85
01-21-88
01-21-91
1475-16
03-02-74
07-01-75 Integrally Finned Tubes for Section III
Ferritic-Austenitic Stainless Steel Seamless Tubes for Sec tion III, Class 2 and 3 Construction
1498-1
11-06-72 SA-508-Class 2 and 3, Mini (N-22)
01-08-79 mum Tempering Temperature,
07-01-82 Section III
1515
03-09-72 Ultrasonic Examination of
07-01-77 Ring Forgings for Shell Sec tions, Section III, Class 1 Ves sels
1521-1
04-29-74 Use of H-Grades of SA-240,
01-01-78 SA-479, SA-336, and SA-358, Section III
Code Case 1521-1 was acceptable subject to com pliance with the recommendations contained in Regu latory Guides 1.31, "Control of Ferrite Content in Stainless Steel Weld Metal," and 1.44, "Control of the Use of Sensitized Stainless Steel."
1527
06-26-727 Integrally Finned Tubes, Sec (N-26)
01-08-79 tion III
01-21-82
01-21-85  
01-21-88
01-21-91
1528-3
11-03-75 High Strength Steel SA-508,
01-01-78 Class 2 and SA-541, Class 2 Forgings, Section III, Class 1 Components Code Case 1528-3 was acceptable subject to the following condition in addition to those conditions spe
6Code Case was annulled on date as indicated, but the annulment wasfirst so indicated in Revision 12 of this guide.


1515        03-09-72  Ultrasonic Examination of              15878        08-13-73    SA-508 Class 3 Forgings with
7Corrected Date.
            07-01-77  Ring Forgings        for  Shell                    12-31-75    0.4/1.0 Ni for Section III and Sections, Section III, Class 1                                VIII, Division 2 Construction Vessels                                1590        08-13-73    Chemical Analysis Variations,
1521-1      04-29-74  Use of H-Grades of SA-240,                          03-21-77    Section III Construction
            01-01-78    SA-479, SA-336, and SA-              1602-1      04-29-74    Use of SB-42 Alloy 122,
                        358, Section III                                  12-31-74    SB-111 Alloys 122, 715 and
                                                                                      706, SB-171 Alloys 715 and Code Case 1521-1 was acceptable subject to                                        706 and SB-466 Alloys 706 compliance with the recommendations contained                                      and 715, Section III, Class in Regulatory Guides 1.31, "Control of Ferrite                                    2 and 3 Components Content in Stainless Steel Weld Metal," and              1603        12-17-73    Toughness Tests When Cross-
    1.44, "Control of the Use of Sensitized Stainless                      07-01-74    Section Limits Orientation Steel."                                                                            and Location of Specimens
                                                              1605        11-05-73    Cr-Ni-Mo-V Bolting Material
1528-3      11-03-75    High Strength Steel SA-508,                        11-20-78    for Section III, Class 1 Com-
            01-01-78    Class 2 and SA-541, Class 2                        03-17-80    ponents Forgings, Section III, Class 1        1608-1      12-17-73    Use of        ASME        SB-265, Components                                        03-21-77    SB-337, SB-338, SB-348, and SB-381, Grades 1, 2, 3, and 7 Code Case 1528-3 was acceptable subject to the                                    Unalloyed      Titanium      and following condition in addition to those condi-                                    ASTM B-363 Titanium Weld- tions specified in the Code Case: The informa-                                    ing Fittings, Section III Class tion required to be developed by Note 1 in the                                    2 and 3 Components Code Case should be provided in each referenc-            1612        12-17-73    Use of Type 308 Stainless ing Safety Analysis Report.                              (N-5 6)      07-01-78    Steel Rod and Bar for Section III, Class 1, 2, 3, and CS
                                                                                      Construction
15298      06-29-72    Materials for Instrument Line
                                                              1613        12-17-73    Use of SA-372 Class IV Forg-
            07-01-73    Fittings, Section III
                                                                          01-01-78    ings, Section III Construction
1531        08-14-72    Electrical Penetrations, Spe-        1615        12-17-73    Use of A587-73, Section III,
            03-21-77    cial Alloys for Electrical
                                                                          01-01-78    Class 3 Construction Penetration Seals, Section III
                                                              16168        12-17-73    Ultrasonic Examination of
1532        08-14-72    Section III, Class 3 Compo-                        07-01-75    Seamless      Austenitic    Steel
            01-01-78    nents Made of 8 Percent and Pipe, Section III, Class 1
                        9 Percent Nickel Steel Construction
1542-1      04-29-74    Type 403 Forgings or Bars for
                                                              16228        03-02-74    PWHT of Repair Welds in (N-33)      01-08-79    Bolting Material, Section III                      01-01-76    Carbon Steel Castings, Sec-
            01-21-82                                                                  tion III, Class 1, 2, and 3
            01-21-85
                                                              1625        03-02-74    Repair of Section III Class 2
1557-3      01-08-79    Steel Products Refined by                          12-31-74    and 3 Tanks (N-37-3)    07-01-82    Secondary Remelting, Section          1626-1      01-08-79    Normalized and Tempered III and VIII, Division 1 and 2 (N-65-1)    01-21-82    1-1/4 Cr Low Alloy Steel
1567      03-03-73    Testing Lots of Carbon and                        01-21-85    Forgings, Section I and Sec-
            01-01-78    Low Alloy Steel Covered                                        tion III
                        Electrodes, Section III
                                                              1634-2      08-13-76    Use of SB-359 for Section III,
1568      03-03-73    Testing Lots of Flux Cored            (N-68)      07-01-78    Division 1, Class 3 Construc-
            01-01-78    and Fabricated Carbon and tion Low Alloy Steel Welding
                                                              16379        04-29-74    Effective Date for Compliance Electrodes, Section III
                                                                          01-01-75    with NA-3700 of Section III
1571      03-03-73    Additional      Material    for
                                                              16458        08-12-74    Use of DeLong Diagram for (N-4 1),  01-08-79    SA-234 Carbon Steel Fittings,
                                                                          01-01-76    Calculating the Delta Ferrite
            01-21-82    Section III                                                    Content of Welds in Section
            01-21-85                                                                  III, Class 1, 2, and CS Con-
1578      06-25-73    SB-167      Nickel-Chromium- struction (N-43)    01-08-79    Iron (Alloy 600) Pipe or
            07-01-82    Tube, Section III
1583      06-25-73    Use of 80-40 Carbon Steel                GCode Case 1637 has been accepted only on a case-by-case
            03-21-77  Castings, Section III                basis.


15296
06-29-72
07-01-73
1531
08-14-72
03-21-77 Materials for Instrument Line Fittings, Section III
Electrical Penetrations, Special Alloys for Electrical Penetra tion Seals, Section III
1532
08-14-72 Section III, Class 3 Compo
01-01-78 nents Made of 8 Percent and 9 Percent Nickel Steel
1542-1 (N-33)
1557-3 (N-37-3)
04-29-74
01-08-79
01-21-82
01-21-85
01-08-79
07-01-82 Type 403 Forgings or Bars for Bolting Material, Section III
Steel Products Refined by Sec ondary Remelting, Section III
and VIII, Division 1 and 2
1567
03-03-73 Testing Lots of Carbon and
01-01-78 Low Alloy Steel Covered Elec trodes, Section III
1568
03-03-73 Testing Lots of Flux Cored and
01-01-78 Fabricated Carbon and Low Alloy Steel Welding Elec trodes, Section III
1571
03-03-73 (N-41)
01-08-79
01-21-82
01-21-85
1578
06-25-73 (N-43)
01-08-79
07-01-82
1583
06-25-73
03-21-77
15876
08-13-73
12-31-75
1590
08-13-73
03-21-77
1602-1
04-29-74
12-31-74 Additional Material for SA-234 Carbon Steel Fittings, Section III
SB-167 Nickel-Chromium-Iron (Alloy 600) Pipe or Tube, Sec ion III
Use of 80-40 Carbon Steel Castings, Section III
SA-508 Class 3 Forgings with
0.4/1.0 Ni for Section III and VIII, Division 2 Construction Chemical Analysis Variations, Section III Construction Use of SB-42 Alloy 122, SB-111 Alloys 122, 715 and
706, SB-171 Alloys 715 and
706 and SB-466 Alloys 706 and 715, Section III, Class 2 and 3 Components
1603
12-17-73 Toughness Tests When Cross
07-01-74 Section Limits Orientation and Location of Specimens
1.85-6
1.85-6


1648        08-12-74    SA-537 Plates for Section III,         1724      11-03-75  Deviation from the Specified
Cr-Ni-Mo-V Bolting Material for Section III, Class 1 Compo nents
            07-01-76    Class 1, 2, 3, and MC Com-             (N-108)   07-01-78 Silicon Ranges in ASME
1608-1
                        ponents                                                    Material Specifications, Sec-
12-17-73 Use of ASME SB-265,
16498        08-12-74    Modified SA 453-GR 660 for                                tion III, Division 1, and VIII,
03-21-77 SB-337, SB-338, SB-348, and SB-381, Grades 1, 2, 3, and 7 Unalloyed Titanium and ASTM B-363 Titanium Weld ing Fittings, Section III, Class
            01-01-76    Class 1, 2, 3, and CS Con-                                 Division 1 and 2 struction                              1728      11-03-75 Steel Structural Shapes and
2 and 3 Components
1650        08-12-74    Use of SA-414 Grade C for                        07-01-77 Small Material Products for
1612
            12-31-74    Class 2 and 3 Components,                                  Component Supports, Section Section III, Division 1                                   III, Division 1 Construction
12-17-73 Use of Type 308 Stainless Steel (N-56)  
1664        11-04-74   Use of Cr-Ni-Fe-Mo-Cu-Cb                1740    12-22-75 Weld Metal Test, Section III,
07-01-78 Rod and Bar for Section III,
            03-21-77    Stabilized Alloy Cb-3 for                        07-01-76 Class 1, 2, 3, MC and CS
Class 1, 2, 3, and CS Construc tion
                        Section III Class 2 and 3              1741-1  01-14-77 Interim Rules for the Re- Construction                                    01-01-78 quired Number of Impact
1613
1666        11-04-74    Use of SB-12, Alloy 122 for                                Tests for Rolled Shapes, Sec-
12-17-73
            07-01-75   Section III, Class 2 and 3                                 tion III, Division 1, Subsec- Construction                                              tion NF, Component Supports
01-01-78
1682-1      08-11-75    Alternate Rules for Material            1742    03-01-76 Use of SB-75 Annealed
1615
            12-31-75    Manufacturers and Suppliers,                    07-01-76 Copper Alloy 122, Section Section III, Subarticle NA-                                III, Division 1, Class 2
12-17-73
                        3700                                                      Construction
01-01-78
16848        03-03-75    A637 Grade 718 for Bolting              1743    03-01-76 Use of SB-98 Cu-SiB Rod
16166
            01-01-76   Class 1 and 2 Construction                      07-01-76 CDA651 Section III, Division
12-17-73
16908        04-28-75    Stock Materials for Section                                1, Class 2 Components
07-01-75 Use of SA-372 Class IV Forg ings, Section III Construction Use of A587-73, Section III,
            01-01-77    III Construction, Section III,          1746    03-01-76 Leak Testing of Seal Welds, Division 1                              (N-123)  03-01-79 Section III, Division 1, Class
Class 3 Construction Ultrasonic Examination of Seamless Austenitic Steel Pipe, Section III, Class 1 Construc tion
1691        04-28-75    Ultrasonic Examination in                                  1, 2, and 3 Construction
16226
            01-01-78    Lieu of Radiography of Repair          1747    03-01-76 Requirements for Martensitic Welds for Vessels, Section III,         (N-124)  01-08-79 Stainless Steel Forgings with Class 1                                          07-13-81 13%      Chromium and 4%
03-02-74 PWHT of Repair Welds in Car
1698        06-30-754  Waiver of Ultrasonic Transfer                    07-13-84 Nickel, Section III, Division 1 (N-92)       11-20-78  Method, Section III, V, and                      07-13-87
01-01-76 bon Steel Castings, Section III,  
              07-13-81  VIII, Division 1                       1748    03-01-76 Low Carbon Austenitic Stain- (N-125) 07-01-78 less Steel Pipe Welded With Code Case 1698 was acceptable subject to the                                    Filler Metal, Section III, Divi- following conditions in addition to those specified                            sion 1, Construction in the Code Case: The material from which the              1754    01-14-77 Hard Surfacing by the Spray- basic calibration block is fabricated should be of         (N-126>  01-07-80 Fuse Method, Section III,
Class 1, 2, and 3
    the same product form, alloy, and heat treatment                      12-13-82 Class 1, 2, and 3 Construction as the material being examined. Alloys of equiva-                   02-20-86 lent P-number grouping may be used for the                            12-07-87 fabrication of calibration blocks if adjustments to                  07-01-88 signal height can be made to compensate for                 1760    04-26-76 Maximum Dimensions for sound beam attenuation difference between the                        01-01-78 Isolated Pores in Welds-Class calibration block and the material under                                        1 Components, Section III,
1625
    examination by following the transfer method                                    Division 1 procedure of T-535.1(d), Article 5, Section V,               1766    04-26-76 Testing      Requirements    for ASME B&PV Code, 1977 edition.                                        07-01-77 Welding Materials, Class 1, 2,
03-02-74
                                                                                    3, MC and CS Construction,
12-31-74
1713        08-11-75    Small Material Items, Section                              Section III, Division 1
1626-1  
              12-31-75    III, Division 1, Class 1, 2, 3,        1767    04-26-76 Examination of Tubular Prod- CS and MC                                      01-01-77 ucts Without Filler Metal-
01-08-79 (N-65-1) 01-21-82
1714-2      08-28-78    Postweld Heat Treatment of                                Class 1 Construction, Section (N-102-2) 07-13-81       P-1 Material, Section III,                                III, Division 1
01-21-85
              06-30-84   Class MC                                1770    08-13-76 Testing of Electroslag Wire
1634-2
1722-1      01-08-79    Vacuum, Carbon Deoxidized              (N-139)  01-01-79 and Flux for Class 1, 2, 3, (N-107-1) 01-08-82      SA-508 Forgings, Section III,                              MC, and CS Construction, Division 1                                                Section III, Division 1
08-13-76 (N-68)
                                                          1.85-7
07-01-78
16378
04-29-74
01-01-75  
16456
08-12-74
01-01-76 Repair of Section III Class 2 and 3 Tanks Normalized and Tempered
1-1/4 Cr Low Alloy Steel Forg ings, Section I and Section III
Use of SB-359 for Section III,  
Division 1, Class 3 Construc tion Effective Date for Compliance with NA-3700 of Section III
Use of DeLong Diagram for Calculating the Delta Ferrite Content of Welds in Section III, Class 1, 2, and CS
Construction
1648
08-12-74 SA-537 Plates for Section III,
07-01-76 Class 1, 2, 3, and MC Compo nents
16496
08-12-74 Modified SA 453-GR 660 for
01-01-76 Class 1, 2, 3, and CS Construc tion
8Code Case 1637 was accepted only on a case-by-case basis.
 
1605
11-05-73
11-20-78
03-17-80
1698 (N-92)
06-30-757
11-20-78
07-13-81 Waiver of Ultrasonic Transfer Method, Section III, V, and VIII, Division 1 Code Case 1698 was acceptable subject to the fol lowing conditions in addition to those specified in the Code Case: The material from which the basic calibra tion block is fabricated should be of the same product form, alloy, and heat treatment as the material being ex amined. Alloys of equivalent P-number grouping may be used for the fabrication of calibration blocks if ad justments to signal height can be made to compensate for sound beam attenuation difference between the cal ibration block and the material under examination by following the transfer method procedure of T-535.1(d),
Article 5, Section V, ASME B&PV Code, 1977 edition.
 
1713
08-11-75 Small Material Items, Section
12-31-75 III, Division 1, Class 1, 2, 3, CS and MC
1714-2
08-28-78 (N-102-2) 07-13-81
06-30-84
1722-1
01-08-79 (N-107-1) 01-08-82 Postweld Heat Treatment of P-1 Material, Section III,  
Class MC
Vacuum, Carbon Deoxidized SA-508 Forgings, Section III,
Division 1
1.85-7
1650
08-12-74 Use of SA-414 Grade C for
12-31-74 Class 2 and 3 Components, Section III, Division 1
1664
11-04-74 Use of Cr-Ni-Fe-Mo-Cu-Cb
03-21-77 Stabilized Alloy Cb-3 for Sec tion III Class 2 and 3 Construc tion
1666
11-04-74 Use of SB-12, Alloy 122 for  
07-01-75 Class 2 and 3 Construction
1682-1
08-11-75 Alternate Rules for Material
12-31-75 Manufacturers and Suppliers, Section III, Subarticle NA-3700
16846
03-03-75 A637 Grade 718 for Bolting
01-01-76 Class 1 and 2 Construction
16906
04-28-75 Stock Materials for Section III
01-01-77 Construction, Section III, Divi sion 1
1691
04-28-75 Ultrasonic Examination in Lieu
01-01-78 of Radiography of Repair Welds for Vessels, Section III,
Class 1
 
1747 (N-124)
1748 (N-125)
1754 (N-126)
1755-1 (N-127)
03-01-76
01-08-79
07-13-81  
07-13-84  
07-13-87 Requirements for Martensitic Stainless Steel Forgings with
13% Chromium and 4% Nick el, Section III, Division 1
03-01-76 Low Carbon Austenitic Stain
07-01-78 less Steel Pipe Welded With Filler Metal, Section III, Divi sion 1, Construction
01-14-77
01-07-80
12-13-82
02-20-86
12-07-87
07-01-88
01-14-77
01-07-80
02-14-83
02-20-86
02-20-89
02-20-92 Hard Surfacing by the Spray Fuse Method, Section III,
Class 1, 2, and 3 Construction Alternative Rules for Examina tion of Welds in Piping, Sec tion III, Class 1 and 2 Construction
1724
11-03-75 Deviation from the Specified (N-108)
07-01-78 Silicon Ranges in ASME Ma terial Specifications, Section III, Division 1, and VIII, Divi sion 1 and 2
1728
11-03-75 Steel Structural Shapes and
07-01-77 Small Material Products for Component Supports, Section III, Division 1 Construction
1740
12-22-75 Weld Metal Test, Section III,
07-01-76 Class 1, 2, 3, MC and CS
1741-1
01-14-77 Interim Rules for the Required
01-01-78 Number of Impact Tests for Rolled Shapes, Section III, Di vision 1, Subsection NF, Com ponent Supports
1742
03-01-76 Use of SB-75 Annealed Copper
07-01-76 Alloy 122, Section III, Divi sion 1, Class 2 Construction
1743
03-01-76 Use of SB-98 Cu-SiB Rod
07-01-76 CDA651 Section III, Division
1, Class 2 Components
1746
03-01-76 Leak Testing of Seal Welds, (N-123)
03-01-79 Section III, Division 1, Class 1,
2, and 3 Construction
1770
(N-139)
08-13-76 Testing of Electroslag Wire and
01-01-79 Flux for Class 1, 2, 3, MC, and CS Construction, Section III,
Division 1
1772
08-13-76 (N-140)
08-30-79
07-16-82
12-31-85
1773
08-13-76
07-01-77 Use of SA-453 Bolts in Service Below 800'F Without Stress Rupture Tests, Section III,
Division 1 Use of Other Product Forms of Materials for Valves, Section III, Division 1
1777
08-13-76 Use of SA-106, Grade C in
07-01-77 Class MC Construction, Sec tion III, Division 1
1781 (N-147)
1E
09-10-76 Use of Modified SA-487 Grade
07-01-78 CA6NM, Section III, Division
1, Class 1, 2, 3, MC or CS
1782
09-10-76 (N-148)
08-30-79
07-16-82
06-30-83
1787
09-10-76
01-01-78
1793 (N-156)
1794 (N-157)
1795 (N-158)
01-14-77
01-07-80
02-14-83
02-14-86
01-14-77
01-07-80
01-07-83
01-14-77
07-01-78 Use of Copper-Nickel Alloy
962 for Castings, Section III,
Division 1, Class 3 Construction Depth of Weld Repairs for Forgings, Section III, Division
1, Class 1, 2, 3, MC and CS
Construction Structural Steel Rolled Shapes, Section III, Division 1, Class 2,
3, and MC
Use of Seamless Al-Br, Alloy CDA 614 Pipe, Section III,
Division 1, Class 3 Examination of Weld Repairs in Forgings, Section III, Divi sion 1, Class 1, 2, 3, MC and CS
1.85-8
1760
04-26-76 Maximum Dimensions for Iso
01-01-78 lated Pores in Welds--Class 1 Components, Section III, Divi sion 1
1766
04-26-76 Testing Requirements for
07-01-77 Welding Materials, Class 1, 2,
3, MC and CS Construction, Section III, Division 1
1767
04-26-76 Examination of Tubular Prod
01-01-77 ucts Without Filler Metal Class 1 Construction, Section III, Division 1
 
1798
01-14-77 Use of ASTM A352-75,
01-01-78 Grades LCA and LCC, Section III, Division 1, Class 1, 2, and
3
1810
03-03-77 Testing Lots of Carbon Steel
03-03-80 Solid, Bare Welding Electrode or Wire, Section III, Division
1, Class 1, 2, 3, MC, and CS
18199
03-23-77 Use of Type XM-19 for
01-01-78 Construction, Section III, Divi sion 1, Class 1, 2, 3
1819-110,11 03-23-77 (N-176-1) 03-23-80
08-25-80
08-25-83
1820
(N-177)
03-23-77
03-17-80
02-14-83
.01-01-84 Use of Type XM-19 for Construction, Section III,
Division 1, Class 1, 2, and 3 Alternative Ultrasonic Examination Technique, Section III, Division 1 N-178
05-25-77 Use of ASTM B271, CDA
01-01-80
954, Alloy 9C for Class 3 Construction, Section III, Divi sion 1 N-180
07-11-77 Examination of Springs for
07-01-78 Class 1 Component Standard Supports, Section III,
Division 1 N-181
07-11-77 Steel Castings Refined by the
07-11-80
Argon Decarburization Pro cess, Section III, Division 1, Construction N-183
07-11-77 Use of Modified SA-182 Grade
01-01-80
F22 for Section III, Division 1, Class 1, 2 and 3 Construction N-190
08-29-77 Use of SA-455 for Class 3
07-01-78 Components, Section III, Divi sion 1 N-204
03-20-78 Use of Modified SA-508, Class
01-01-81
3, and SA-541, Class 3 for Sec tion III, Division 1, Class 1, 2, and 3 Construction N-206
03-20-78
03-16-81
06-30-83 N-207-1 03-19-79
01-21-82
01-21-85 Use of ASTM B151-75 Copper-Nickel Alloy 706 Rod and Bar for Section III,
Division 1, Class 3 Construc tion Use of Modified SA-479 Type XM-19 for Section III, Divi sion 1, Class 1, 2, 3, or CS
Construction N-223
11-30-78 Requirements for Stainless
11-20-81 Steel Precipitation Hardening, Section III, Division 1, Class MC
N-224-1 05-11-81
04-05-84
04-05-87
04-05-90
Use of ASTM A500 Grade B
and ASTM A501 Structural Tubing for Welded Attach ments for Section III,
Class 2, 3, and MC
N-225
11-20-78 Certification and Identification
01-01-81 of Material for Component Supports, Section III, Division
1 N-227
07-09-79 Examination of Repair Welds,
07-09-82 Section III, Class 2 and 3 Tanks N-242-1
04-10-80
05-06-83
06-30-84 Materials Certification, Section III, Division 1, Classes 1, 2, 3, MC, and CS Construction Code Case N-242-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Applicants should identify in their Safety Analysis Reports the components and sup ports for which the Code Case is being applied and should specify the respective paragraphs of the Code Case.


1772          08-13-76      Use of SA-453 Bolts in Serv-              1820        03-23-77  Alternative Ultrasonic Exami- (N-140)        08-30-79      ice Below 800°F Without                    (N-177)      03-17-80  nation Technique, Section II,
9This Code Case was reaffirmed as Case 1819-1. See Regulatory Position
              07-16-82      Stress Rupture Tests, Section                          02-14-83  Division 1
2, Case 1819-1, for the effective dates.
                12-31-85    III, Division 1                                        01-01-84
1773          08-13-76      Use of Other Product Forms                N-178        05-25-77  Use of ASTM B271, CDA
              07-01-77      of Materials for Valves, Sec-                          01-01-80  954, Alloy 9C for Class 3 tion III, Division 1                                              Construction, Section III, Di-
1777            08-13-76    Use of SA-106, Grade C in                                        vision 1
                07-01-77    Class MC Construction, Sec-                N-180        07-11-77  Examination of Springs for tion III, Division 1                                    07-01-78  Class 1 Component Standard
1781          09-10-76    Use of Modified SA-487                                            Supports, Section III, Divi- (N-147)        07-01-78    Grade CA6NM, Section III,                                        sion 1 Division 1, Class 1, 2, 3, MC            N-181        07-11-77  Steel Castings Refined by the or CS                                                  07-11-80  Argon Decarburization Proc-
1782          09-10-76      Use of Copper-Nickel Alloy                                      ess, Section III, Division 1, (N-148)        08-30-79      962 for Castings, Section III,                                    1, Construction
                07-16-82      Division 1, Class 3 Construc-            N-183        07-11-77  Use of Modified SA-182
                06-30-83    tion                                                    01-01-80  Grade F22 for Section III,
1787          09-10-76      Depth of Weld Repairs for                                        Division 1, Class 1, 2 and 3
                01-01-78      Forgings, Section III, Division Construction
                              1, Class 1, 2, 3, MC and CS
                                                                        N-190        08-29-77  Use of SA-455 for Class 3 Construction                                          07-01-78  Components,      Section III,.
1793          01-14-77      Structural        Steel    Rolled Division 1 (N-156)        01-07-80      Shapes, Section III, Division N-204        03-20-78  Use of Modified SA-508,
                02-14-83      1, Class 2, 3, and MC
                                                                                    01-01-81  Class 3, and SA-541, Class 3
                02-14-86
1794          01-14-77      Use of Seamless Al-Br, Alloy                                      for Section III, Division 1, (N-157)        01-07-80      CDA 614 Pipe, Section III,                                        Class 1, 2, and 3 Construction
                01-07-83      Division 1, Class 3                      N-206        03-20-78  Use of ASTM B151-75
1795          01-14-77      Examination of Weld Repairs                            03-16-81  Copper-Nickel Alloy 706 Rod (N-158)        07-01-78      in Forgings, Section III,                              06-30-83  and Bar for Section 11, Division 1, Class 1, 2, 3, MC                                    Division 1, Class 3 Construc- and CS                                                            tion
.1798          01-14-77 Use of ASTM A352-75,                          N-207-1      03-19-79  Use of Modified SA-479 Type
              .01-01-78 Grades LCA and LCC, Sec-                                    01-21-82  XM-19      for Section III,
                              tion III, Division 1, Class 1,                        01-21-85  Division 1, Class 1, 2, 3, or
                              2, and 3                                                          CS Construction
  1810          03-03-77 Testing Lots of Carbon Steel                  N-223        11-30-78  Requirements for Stainless
                03-03-80 Solid, Bare Welding Electrode                                11-20-81  Steel Precipitation Hardening, or Wire, Section III, Division                                    Section III, Division 1, Class
                              1, Class 1, 2, 3, MC, and CS                                    MC
  181910        03-23-77 Use of Type XM-19 for                          N-225        11-20-78  Certification and Identifica-
                01-01-78 Construction,            Section III,                      01-01-81  tion of Material for Compo- Division 1, Class 1, 2, 3                                        nent Supports, Section III,
  1819-111I1203-23-77 Use of Type XM-19 for                                                    Division 1 (N-176-1) 03-23-80 Construction,                Section III,        N-227        07-09-79  Examination of Repair Welds,
                08-25-80 Division 1, Class 1, 2, and 3                              07-09-82  Section III, Class 2 and 3
                08-25-83                                                                      Tanks N-242-1      04-10-80  Materials Certification, Sec-
      10
        This Code Case was reaffirmed as Case 1819-1. See                           05-06-83  tion III, Division 1, Classes 1, regulatory position 2 for the effective dates.                                    06-30-84  2, 3, MC, and CS Construc-
    "Case 1819 (N-176) was annulled December 31, 1977.                                        tion However, it was later reaffirmed to continue providing rules pertaining to external pressure charts.


,2 Code Case N-176-1:        The 3-23-80 is an annulment                Code Case N-242-1 was acceptable subject to the date. This Case was allowed to expire on 3-23-80 because of                following condition in addition to those condi- an administrative error. It was reinstated on 8-25-80 with no technical changes. It is, therefore, considered to be in effect            tions specified in the Code Case: Applicants during that lapse in time. The 8-25-83 is the mandatory an-                should identify in their *Safety Analysis Reports nulment date. The Case did not appear in Revisions 18-21 of this guide because* of the ASME administative error.                      the components and supports for which the Code
10Case 1819 (N-176) was annulled December 31,1977. However, itwas later reaffirmed to continue providing rules pertaining to external pres sure charts.
                                                                  1.85-8


Case is being applied and should. specify the re-              N-296        11-17-80  Welding Material, Section III,
llCode Case N-176-1: The 3-23-80 is an annulment date. This Casewas allowed to expire on 3-23-80 because of an administrative error. It was reinstated on 8-25-80 with no technical changes. It is, therefore, con sidered to be in effect during that lapse in time. The 8-25-83 is the man datory annulment date. The Case did not appear in Revisions 18-21 of this guide because of the ASME administrative error.
      spective paragraphs of the Code Case.                                        12-01-83  Division 1 Construction N-298        11-17-80  Examination of Component N-245        07-09-79    Use of ASTM B61-76 and
              07-16-82                                                            12-01-83  Supports, Section III, Division B62-76 Copper Alloy Castings
              07-17-85    for Section III, Division 1,                                      1, Class 1, 2, 3, and MC
                                                                    N-299-1      07-18-85 Use of Nickel-Chromium- Class 3 Construction
                                                                                  02-23-87 Molybdenum-Columbium Al- N-246          07-09-79    Use of SB-169, Alloy CA
                                                                                            loy 625 Forgings, Section III,
              09-07-82    614, Section III, Division 1, Division 1, Class 2 and Class 3 Class 3 N-248          08-30-79    Alternative Reference Radio-                                      Components N-310-1      08-14-81 Certification of Bolting Mate-
              07-01-80   graphs, Section III, Division
                                                                                  07-01-82 rials, Section III, Division 1,
                            1, Classes 1, 2, 3, MC, and CS Construction                                                  Class 1, 2, 3, MC and CS
N-259          01-07-80   Ni-Cu-Al Bolting Material SB                  Code Case N-310-1 was acceptable subject to the
              02-14-83    164 Modified, Section III,                   following conditions in addition to those condi-
              01-01-84    Division 1, Class 3                          tions specified in the Code Case: Each applicant N-26513        01-07-80    Modified SA-487 Castings,                    who applies the Code Case should indicate in the
              09-01-83     Section III, Division 1, Class 1            referencing Safety Analysis Report (1) in what
              12-31-84                                                  way the bolting does not meet NCA-3800 (or
              05-19-85                                                  NA-3700), (2) where the bolting will be used in N-267          01-07-80    Double-Wall        Radiography,            the plant, and (3) how it will be shown that the
              07-01-81    Section III, Division 1, Class 1            bolting material properties required by the Equip- and 2                                        ment Support Design Specification are present in N-274          03-17-80    Alternative Rules for Exami-                the actual bolting material.


09-07-82     nation of Weld Repairs for
N-245
              06-30-86    Section III, Division 1 Con- struction                                N-317        07-13-81  ASTM A276 Bar Section III,
07-09-79
                                                                                  07-01-82  Division 1 Code Case N-274 was acceptable subject to N-321-1      12-05-85  Use of Modified SA-249, the following condition' 4 in addition to those
07-16-82  
                                                                                  12-05-88  Grade TP 304, Section III,
07-17-85 Use of ASTM B61-76 and B62-76 Copper Alloy Castings for Section III, Division 1, Class 3 Construction N-246
      conditions specified in the Code Case. Paragraph Division 1, Class 1
07-09-79 Use of SB-169, Alloy CA 614,  
      6 should be expanded as follows: The ultrasonic N-342        04-02-82 Use of SA-249 and SA-312 examination procedures shall be proven by actual
09-07-82 Section III, Division 1, Class 3 N-248
                                                                                  04-02-85 Type 317 Stainless Steel, demonstration, to the satisfaction of the Author- Section   III, Division   1, ized Nuclear Inspector, that the procedures are Classes 1, 2, and 3 capable of detecting unacceptable cracks accord- N-348        09-09-82 Use of SA-574 Socket Head ing to Section XI requirements.
08-30-79 Alternative Reference Radio
07-01-80 graphs, Section III, Division 1, Classes 1, 2, 3, MC, and CS
Construction
1.85-9


09-07-85 Cap Screws, Section III,Divi- N-277          03-17-80     Use of Type XM-19 Austen-                                        sion 1
N-259
              09-17-80    itic Stainless Steel for Sec- Code Case N-348 was acceptable subject to the tion III, Division 1, Class MC
01-07-80 Ni-Cu-Al Bolting Material SB
                                                                          following condition in addition to those condi- Construction tions specified in the Code Case: Applicants N-295          01-15-81    NCA-1140, Materials, Sec- should justify in their Safety Analysis Reports
02-14-83
              12-11-81     tion III, Division 1 why use of these socket head cap screws will not
164 Modified, Section III,  
              06-30-82 result in early failure from stress corrosion cracking.
01-01-84 Division 1, Class 3 N-26512
01-07-80 Modified SA-487 Castings,
09-01-83 Section III, Division 1, Class 1
12-31-84
05-19-85 N-267
01-07-80
Double-Wall Radiography,  
07-01-81 Section III, Division 1, Class 1 and 2 N-274
03-17-80
09-07-82
06-30-86 Alternative Rules for Examina tion of Weld Repairs for Section III, Division 1 Construction Code Case N-274 was acceptable subject to the fol lowing condition 13 in addition to those conditions spe cified in the Code Case. Paragraph 6 should be expand ed as follows: The ultrasonic examination procedures shall be proven by actual demonstration, to the satisfac tion of the Authorized Nuclear Inspector, that the pro cedures are capable of detecting unacceptable cracks according to Section XI requirements.


'3Code Case N-265 was allowed to expire on 1-7-83 because of an administrative erro
N-277
03-17-80
Use of Type XM-19 Austenitic
09-17-80 Stainless Steel for Section III,
Division 1, Class MC
Construction N-295
01-15-81
12-11-81
06-30-82 NCA-1140, Materials, Section III, Division 1 N-296
11-17-80
Welding Material, Section III,
12-01-83 Division 1 Construction N-298
11-17-80
Examination of Component
12-01-83 Supports, Section III, Division
1, Class 1, 2, 3, and MC
N-299-1
07-18-85
02-23-87 Use of Nickel-Chromium Molybdenum-Columbium Alloy 625 Forgings, Section III, Division 1, Class 2 and Class 3 Components
12Code Case N-265 was allowed to expire on 1-7-83 because of an ad ministrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on
5-19-85. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ef fect during the period of 12-31-84 through 5-19-85.


====r. It was reinstated on====
13The reason for the conditional acceptance of paragraph 6 is to make cer tain that there is a qualified ultrasonic testing procedure capable of de tecting small flaws and differentiating the small flaws from geometric reflectors. This paragraph does not in any way alter the acceptance cri teria as specified in paragraph 3.
9-1-83 with no technical changes. The Case is, therefore,            N-352-1      07-18-85  Use of SA-638 Grade 660
considered in effect during that period of time. Again, Code                      06-30-86  Forgings and Bars Below Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on 5-19-85.                                    700'F Without Stress Rupture Because of the circumstances and because there were no                                      Tests, Section III, Division I
changes in the Code Case, the NRC considers that this                N-353        07-16-82  Marking of SA-354 Grade BD
Case was in effect during the period of 12-31-84 through
5-19-85.                                                                          05-19-85  Bolting, Section III, Divi-
  ' 4The reason for the conditional acceptance of paragraph 6                     09-05-88  sion 1 is to make certain that there is a qualified ultrasonic testing       N-371-1      07-18-85  12CR-1W-1Mo-1/4V Marten- procedure capable of detecting small flaws and differentiating                   ,07-18-88  sitic Stainless Steel Valve the small flaws from geometric reflectors. This paragraph does not in any way alter the acceptance criteria as specified in Internals, Section I1l, Divi- paragraph 3.                                                                                 sion 1
                                                              1.85-9


N-372          02-14-83    SB-163        Ni-Fe-Cr-Mo-Cu                tions specified in the Code Case: The informa-
N-310-1 08-14-81 Certification of Bolting Materi
                  12-31-83  Alloy 825 (UNS N08825)                     tion required to be developed by Note 1 in the Tubing, Section III, Division 1            Code Case should be provided in each referenc- N-378          10-28-83 Examination of Piping Sup-                    ing Safety Analysis Report.
07-01-82 als, Section III, Division 1, Class 1, 2, 3, MC and CS
Code Case N-310-1 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 (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.


10-28-861Sport Material, Section III,
N-317
                            Division 1, Class 1                     1395-3      11-06-72    SA-508, Class 2 Forgings with N-388          07-25-83 Component Support Bolting,
07-13-81 ASTM A276 Bar Section III,  
                                                                                01-08-79    Modified Manganese Con-
07-01-82 Division 1 N-321-1  
                07-30-86 Section      III,    Division      1, I                                                                                            tent, Section III or Section
12-05-85 Use of Modified SA-249,
                02-23-87 Classes 2, 3, and MC
12-05-88 Grade TP 304, Section III, Di vision 1, Class 1 N-337-1
                                                                                            VIII, Division 2 N-398          02-20-84 Reporting of Charpy-V Notch                1407-2      06-26-72    Time of Examination for Class
07-18-85 Use of ASTM B525-70 Grade
                02-20-87 Test Results, Section III,
07-18-88
                                                                                07-01-74    1, 2, and 3, Section III
11, Type II, Sintered Austentic
                            Division 1 Vessels Code Case N-398 is acceptable subject to the fol-           1414-3      11-03-75    High Yield Strength Cr-Mo lowing condition in addition to those conditions                        03-01-76    Steel for Section III, Division specified in the Code Case: The Code Case is                                          1, Class 1 Vessels not acceptable to steam generator or reactor coolant pump supports. Applicants wishing to use                Code Case 1414-3 was acceptable subject to the this Code Case should indicate in the Safety                    following condition in addition to those condi- Analysis Report the component supports to                      tions specified in the Code Case: The informa- which the case is applied for review on a case-by-              tion required to be developed by Note 1 in the case basis.                                                    Code Case should be provided in each referenc- ing Safety Analysis Report.
03-14-91 Stainless Steel for Class 2, 3,  
03-14-94 and MC Component Standard Supports, Section III, Divi sion 1 N-342
04-02-82 Use of SA-249 and SA-312
04-02-85 Type 317 Stainless Steel, Sec tion III, Division 1, Classes 1,  
2, and 3 N-348
09-09-82 Use of SA-574 Socket Head
09-07-8514 Cap Screws, Section III, Divi sion 1 Code Case N-348 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: 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.


3. Code Cases that were endorsed by the NRC in a prior version of this guide and were superseded by revised Code Cases on or after July 1, 1974, should                1414-4      03-01-76    High Yield 'Strength Cr-Mo be considered as not endorsed as of the date of the                            08-09-77    Steel for Section III, Division ASME action that approved the revised version of                                            1, Class 1 Vessels the Code Cases. These Code Cases that are no longer                    Code Case 1414-4 was acceptable subject to the endorsed are listed in the following by number,                        following condition in addition to those condi-
N-348-1
                                  17 effective dates, 16 and title.                                        tions specified in the Code Case: The informa-
09-07-8514 Use of SA-574 Socket Head
  1332-6          03-09-72  Requirements for Steel Forg-                tion required to be developed by Note 1 in the Code Case should be provided in each referenc-
02-20-86 Cap Screws, Section III, Divi
                  01-08-79  ings, Section III and VIII,
02-20-89 sion 1 Code Case N-348-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.
                            Division 2                                  ing Safety Analysis Report.


1335-9         04-29-74  Requirements      for Bolting
14Code Case N-348 was annulled on 9-7-85. It was reinstated as N-348-1 on 2-20-86. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that the Code Case was in effect during the period 9-7-85 through 2-20-86.
                  08-28-78  Materials                              1484-1      04-29-74    SB-163      Nickel-Chromium-
  1337-9          04-29-74  Special Type 403 Modified                          11-04-74    Iron Tubing (Alloy 600) at a
                  04-28-75  Forgings or Bars, Section III                                  Specified    Minimum Yield
  1337-10        04-28-75  Special Type 403 Modified                                      Strength of 40.0 Ksi, Section
                  05-15-78  Forgings or Bars, Section III                                  III, Class 1
  1344-5        04-29-74  Nickel-Chromium,              Age-      1484-2     11-04-74 SB-163          Nickel-Chromium- (N-5)          01-08-79  Hardenable      Alloys (Alloy                      08-13-76 Iron Tubing (Alloy 600 and
                  01-21-82  X750), Section III                                              690) at a Specified Minimum
                  12-13-.82                                                                  Yield Strength of 40.0 Ksi,
  1358-5        11-03-75  High Yield Strength Steel,                                      Section III, Class 1 (N-7)          01-08-79  Section III, Division 1, Class 1        1484-3      08-13-76 SB-163          Nickel-Chromium-
                  01-21-82  Vessels                                (N-20)      08-30-79 Iron Tubing (Alloy 600 and
                  12-13-82                                                      07-16-82 690)          and      Nickel-Iron- Code Case 1358-5 was acceptable subject to the                         05-19-85 Chromium Alloy 800 at a following condition in addition to those condi-                        09-05-85 Specified        Minimum Yield Strength of 40.0 Ksi, Section III, Division 1, Class 1
      15The annulment date of 12-31-84 that was listed in Revi-     N-20-1      09-05-85 SB-163          Nickel-Chromium- sions 24 and 25 was in error. The annulment date should be                    12-07-87 Iron Tubing (Alloy 600 and
    10-28-86.


18 Earlier date-date Code Case was approved by ASME;                                    690)      and      Nickel-Iron- later date-date revision of Code Case was approved by                                      Chromium Alloy 800 at a ASME.                                                                                      Specified Minimum        Yield
1.85-10
      17Code Cases 1334-2, 1337-7, 1344-3, 1484, 1521, and
    1542, which were listed in the original issue of this guide,                              Strength of 40.0 Ksi, Section were revised by the ASME prior to July 1, 1974.                                            III, Division 1, Class 1
                                                              1.85-10


N-20-2           12-07-87  SB-163        Nickel-Chromium-                hardenable alloy SA-453 Grade 660 and SA-637
N-348-2 08-14-90 Use of SA-574 Socket Head
                11-30-88  Iron Tubing (Alloy 600 and                    Grade 688 should be performed when the mate-
08-14-93 Cap Screws, Section III, Divi sion 1 Code Case N-348-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.
                            690)        and      Nickel-Iron-            rial is in the solution-treated condition.


Chromium Alloy 800 at a Specified      Minimum Yield              N-60-2        09-17-84  Material for Core Support
N-352-1 07-18-85 Use of SA-638 Grade 660
                                                                                    09-05-85  Structures, Section III, Divi- Strength of 40.0 Ksi, and Cold Worked Alloy 800 at a                                        sion 1 Yield Strength of 47.0 Ksi,                   Code Case N-60-2 was acceptable subject to the Section III, Division 1, Class 1             following condition in addition to those condi-
06-30-86 Forgings and Bars Below
149218          10-29-71  Post Weld Heat Treatment,                    tions specified in the Code Case: Welding of age-
700'F Without Stress Rupture Tests, Section III, Division 1 N-353
                03-03-75    Section I, III and VIII,                     hardenable alloy SA-453 Grade 660 and SA-637 Division 1 and 2                              Grade 688 should be performed when the mate-
07-16-82
1557-2          12-17-73    Steel Products Refined by                    rial is in the solution-treated condition. For
05-19-85
                01-08-79    Secondary Remelting                          SA-479 material, the maximum yield strength
09-05-88 N-367
1618            03-02-74    Material for Core Support                   should not exceed 90,000 psi in view of the sus-
02-14-83
                03-03-75    Structures--Section III, Sub-               ceptibility of this material to environmental section NG                                    cracking.
02-19-86
02-19-89 Marking of SA-354 Grade BD
Bolting, Section III, Division 1 SA-372 Type V, Grade 1, Class B, Section III, Division 1 N-371-1 07-18-85
12CR-1W-1Mo-1/4V Marten
07-18-88 sitic Stainless Steel Valve In ternals, Section III, Division 1 N-372
02-14-83 SB-163 Ni-Fe-Cr-Mo-Cu Alloy
12-31-83
825 (UNS N08825) Tubing, Section III, Division 1 N-378
10-28-83 Examination of Piping Support
10-28-8615 Material, Section III, Division
1, Class 1 N-379-1 07-18-85
07-18-88
03-14-91
07-18-91 N-388
07-25-83
07-30-86
02-23-87 Bimetallic Tubing Section III,
Division 1, Class 1 Component Support Bolting, Section III, Division 1, Classes
2, 3, and MC
N-398
02-20-84 Reporting of Charpy-V Notch
02-20-87 Test Results, Section III, Divi sion 1 Code Case N-398 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The Code Case is not acceptable to steam generator or reactor coolant pump supports.


Code Case 1618 was acceptable subject to the                   1626          03-02-74  Normalized and Tempered following conditions in addition to those specified                          01-08-79    1-1/4 Cr Low Alloy Steel in the Code Case:                                                                      Forgings, Section 1, Section a. Welding of age-hardenable alloy SA-453                                          III, and Section VIII, Division Grade 660 and SA-637 Grade 688 should be                                                1 and 2 performed when the material is in the solution-                1634          07-01-74  Use of SB-359 for Section III,
Applicants wishing to use this Code Case should indi cate in the Safety Analysis Report the component sup ports to which the case is applied for review on a case by-case basis.
      treated condition.                                                          08-12-74  Class 3 Construction
                                                                      1634-1    -  08-12-74  Use of SB-359 for Section III,
            b. Use of alloy ASTM A-564 Grade 631 is                                08-13-76  Class 3 Construction not acceptable on a generic basis.                            1644          08-12-74  Additional Materials for Com-
                                                                                    04-28-75  ponent Supports-Section III,
1618-1          03-03-75    Material for Core Support Subsection NF, Class 1, 2,
                03-01-76    Structures Section III, Sub-
                                                                                                3, and MC Construction section NG.


Code Case 1644 was acceptable subject to the Code Case 1618-1 was acceptable subject to the following condition in addition to those condi- following condition in addition to those specified                tions specified in the Code Case: The maximum in the Code Case: Welding of age-hardenable al- measured ultimate tensile strength of the compo- loy SA-453 Grade 660 and SA-637 Grade 688                          nent support material should not exceed 170 Ksi.
15The annulment date of 12-31-84 that was listed in Revisions 24 and 25 was in error. The annulment date should be 10-28-86.


should be performed when the material is in the solution-treated condition.
N-459
05-04-88
03-14-91
03-14-94 SA-508 Basic Oxygen-Ladle Furnace Process for Code Construction, Section III, Divi sion 1 N-470
03-08-89 Class MC Material Require
03-08-92 ments [NE-2121(c)], Section III, Division 1 N-475
12-11-89 Materials in Inventory, Section
12-11-92 III, Division 1 N-482
03-05-90 Direct Quenched Stainless Bar,
03-05-93 ASTM A 479-88b, Section III,
Division 1 N-501
07-27-92 Alternative Rules to
12-31-93 NCA-3800, 1990 Addenda Section III, Division 1


1644-1        04-28-75   Additional Materials for Com-
===3. REVISED CODE CASES ===
1618-2          03-01-76    Material for Core Support                              06-30-75    ponent Support-Section III,
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
(N-60)         01-08-79   Structures-Section III, Divi-                                      Subsection NF, Class 1, 2, 3,
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. 17
                01-21-82   sion 1, Subsection NG                                              and MC Construction
1332-6
                05-25-83 Code Case 1644-1 was acceptable subject to the Code Case 1618-2 was acceptable subject to the                    following condition in addition to those condi- following condition in addition to those condi-                    tions specified in the Code Case: The maximum tions specified in the Code Case: Welding of age-                  measured ultimate tensile strength of the compo- hardenable alloy SA-453 Grade 660 and SA-637                      nent support material should not exceed 170 Ksi.
03-09-72 Requirements for Steel Forg
01-08-79 ings, Section III and VIII, Divi sion 2
1335-9
04-29-74
08-28-78
1337-9
04-29-74
04-28-75
1337-10 04-28-75  
05-15-78
1344-5
04-29-74 (N-5)
01-08-79
01-21-82
12-13-82 Requirements for Bolting Materials Special Type 403 Modified Forgings or Bars, Section III  
Special Type 403 Modified Forgings or Bars, Section III
Nickel-Chromium, Age-Har denable Alloys (Alloy X750),
Section III
1358-5
11-03-75 High Yield Strength Steel, Sec (N-7)  
01-08-79 tion III, Division 1, Class 1  
01-21-82 Vessels
12-13-82 Code Case 1358-5 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.


Grade 688 should be performed when the mate- rial is in the solution-treated condition.
16Earlier date-date Code Case was approved by ASME; later date---date revision of Code Case was approved by ASME.


1644-2       06-30-75    Additional Materials for Com- N-60-1          05-25-83    Material for Core Support                              11-03-75  ponent Supports--Section III,
17Code Cases 1334-2, 1337-7, 1344-3, 1484, 1521, and 1542, which were listed in the original issue of this guide, were revised by the ASME
                09-17-84    Structures,       Section      III,                               Subsection NF, Class 1, 2, Division 1                                                        3 and MC Construction Code Case N-60-1 was acceptable subject to the                    Code Case 1644-2 was acceptable subject to following condition in addition to those condi-                    the following condition in addition to those tions specified in the Code Case: Welding of age-                  conditions specified in the Code Case: The maxi-
prior to July 1, 1974.
    1                                                                     mum measured ultimate tensile strength of the
      8Code Case 1492 is no longer listed by ASME as a Section            component support material should not exceed III Code Case and is therefore deleted from the acceptable list- ing.                                                                      170 Ksi.


1.85-11
1.85-11


1644-3       11-03-75   Additional Materials for Com-             demonstrated by the applicant that (1) the im-
1395-3  
            03-01-76   ponent Supports-Section III,             pact test results for the material meet code re- Subsection NF, Class 1, 2,               quirements and (2) the material is not subject to
11-06-72 SA-508, Class 2 Forgings with
                        3 and MC Construction                    stress corrosion cracking by virtue of the fact that Code Case 1644-3 was acceptable subject to the                 (a) a corrosive environment is not present and following condition in addition to those condi-                (b) the component that contains the material has tions specified in the Code Case: The maximum                  essentially no residual stresses or assembly measured ultimate tensile strength of the compo-               stresses, and it does not experience frequent sus- nent support material should not exceed 170 Ksi.              tained loads in service.
01-08-79 Modified Manganese Content, Section III or Section VIII, Di vision 2
1407-2
06-26-72 Time of Examination for Class
07-01-74
1, 2, and 3, Section III Vessels
1414-3
11-03-75 High Yield Strength Cr-Mo
03-01-76 Steel for Section III, Division
1, Class 1 Vessels Code Case 1414-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.
 
1414-4
03-01-76 High Yield Strength Cr-Mo
08-09-77 Steel for Section III, Division
1, Class 1 Vessels Code Case 1414-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.
 
1484-1
04-29-74 SB-163 Nickel-Chromium-Iron
11-04-74 Tubing (Alloy 600) at a Speci fied Minimum Yield Strength of 40.0 Ksi, Section III, Class 1  
1484-2
11-04-74 SB-163 Nickel-Chromium-Iron
08-13-76 Tubing (Alloy 600 and 690) at a Specified Minimum Yield Strength of 40.0 Ksi, Section III, Class 1
1484-3 (N-20)
08-13-76
08-30-79
07-16-82
05-19-85
09-05-85 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690)
and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0
Ksi, Section III, Division 1, Class 1 N-20-1
09-05-85 SB-163 Nickel-Chromium-Iron
12-07-87 Tubing (Alloy 600 and 690)
and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0
Ksi, Section III, Division 1, Class 1 N-20-2  
12-07-87 SB-163 Nickel-Chromium-Iron
11-30-88 Tubing (Alloy 600 and 690)  
and Nickel-Iron-Chromium Alloy 800 at a Specified Mini- mum Yield Strength of 40.0
Ksi, and Cold Worked Alloy
800 at a Yield Strength of 47.0
Ksi, Section III, Division 1, Class 1
149218
10-29-71 Post Weld Heat Treatment,
03-03-75 Section I, III and VIII, Division
1 and 2
1557-2
12-17-73 Steel Products Refined by Sec
01-08-79 ondary Remelting
1618
03-02-74 Material for Core Support
03-03-75 Structures Section III, Subsec tion NG
Code Case 1618 was acceptable subject to the fol lowing conditions in addition to those specified in the Code Case: 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 accept able on a generic basis.


1644-6      03-03-77    Additional Materials for Com-
1618-1
1644-4      03-01-76   Additional Materials for Com-                      11-21-77  ponent Supports and Alter-
03-03-75 Material for Core Support
            08-13-76    ponent Supports and Alter-                                    nate Design Requirements for nate Design Requirements for Bolted Joints, Section III, Di- Bolted Joints, Section III,
03-01-76 Structures, Section III, Subsec tion NG
                                                                                        vision 1, Subsection NF, Class Division 1, Subsection NF,
Code Case 1618-1 was acceptable subject to the following condition in addition to those specified in the Code Case: 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.
                                                                                        1, 2, 3 and MC Construction Class 1, 2, 3 and MC Con- struction                                Code Case 1644-6 was acceptable subject to the following conditions in addition to those specified Code Case 1644-4 was acceptable subject to the                in the Code Case: The maximum measured ulti- following conditions in addition to those specified            mate tensile strength (UTS) of the component in the Code Case: The maximum measured ulti-                  support material should not exceed 170 . Ksi in mate tensile strength (UTS) of the component                  view of the susceptibility of high-strength materi- support material should not exceed 170 Ksi in                  als to brittleness and stress corrosion cracking.


view of the susceptibility of high-strength materi-           Certain applications may exist where a UTS value als to brittleness and stress corrosion cracking.              of up to 190 Ksi could be considered acceptable Certain applications may exist where a UTS value              for a material and, under this condition, the De- of up to 190 Ksi could be considered acceptable                sign Specification should specify impact testing for a material and, under this condition, the De-             for the material. For these cases, it should be sign Specification should specify impact testing              demonstrated by the applicant that (1) the im- for the material. For these cases, it should be                pact test results for the material meet code re- demonstrated by the applicant that (1) the im-                 quirements and (2) the material is not subject to pact test results for the material meet code re-               stress corrosion cracking by virtue of the fact that quirements and (2) the material is not subject to              (a) a corrosive environment is not present and stress corrosion cracking by virtue of the fact that          (b) the component that contains the material has (a) a corrosive environment is not present and                essentially no residual stresses or assembly (b) the component that contains the material has              stresses, and it does not experience frequent sus- essentially no residual stresses or assembly                  tained loads in service.
1618-2 (N-60)
03-01-76 Material for Core Support
01-08-79 Structures Section III, Division
01-21-82
1, Subsection NG
05-25-83 Code Case 1618-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.


stresses, and it does not experience frequent sus- tained loads in service.                                  1644-7        11-21-77  Additional Materials for Corn- (N-71-7)      05-15-78  ponent Supports, Section III,
N-60-1
1644-5        08-13-76    Additional Materials for Com-                                Division 1, Subsection NF,
05-25-83 Material for Core Support
              03-03-77    ponent Supports and Alter-                                   Class 1, 2, 3 and MC Compo- nate Design Requirements for                                  nent Supports Bolted Joints, Section III,               Code Case 1644-7 was acceptable subject to the Division 1, Subsection NF,                following conditions in addition to those specified Class 1, 2, 3 and MC Con-                in the Code Case: The maximum measured ulti- struction                                mate tensile strength (UTS) of the component Code Case 1644-5 was acceptable subject to the                 support material should not exceed 170 Ksi in following conditions in addition to. those specified          view of the susceptibility of high-strength materi- in the Code Case: The maximum measured ulti-                  als to brittleness and stress corrosion cracking.
09-17-84 Structures, Section III, Divi sion 1 Code Case N-60-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.


mate tensile strength (UTS) of the component                  Certain applications may exist where a UTS value support material should not exceed 170 Ksi in                  of up to 190 Ksi could be considered acceptable view of the susceptibility of high-strength materi-            for a material and, under this condition, the De- als to brittleness and stress corrosion cracking.              sign Specification should specify impact testing Certain applications may exist where a UTS value              for the material. For these cases, it should be of up to 190 Ksi could be considered acceptable                demonstrated by the applicant that (1) the i- for a material and, under this condition, the De-              pact test results for the material meet code re- sign Specification should specify impact testing              quirements and (2) the material is not subject to for the material. For these cases, it should be              stress corrosion cracking by virtue of the fact that
18Code Case 1492 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceptable listing
                                                        1.85-12
1.85-12 L


(a) a corrosive environment is not present and              Code Case N-71-10 was acceptable subject to the (b) the component that contains the material has            following conditions in addition to those condi- essentially no residual stresses or assembly                tions specified in the Code Case: The maximum stresses, and it does not experience frequent sus-          measured ultimate tensile strength (UTS) of the tained loads in service.                                    component support material should not exceed
N-60-2
                                                                      170 Ksi in view of the susceptibility of high- strength materials to brittleness and stress corro-
09-17-84 Material for Core Support
    1644-8        05-15-78 Additional Materials for Corn- sion cracking. Certain applications may exist (N-71-8)      01-07-80 ponent Supports, Section III,
09-05-85 Structures, Section III, Divi sion 1 Code Case N-60-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.
                              Division 1, Subsection NF,            where a UTS value of up to 190 Ksi could be considered acceptable for a material and, under Class 1, 2, 3 and MC Compo- this condition, the Design Specification should nent Supports specify impact testing for the material. For these Code Case 1644-8 was acceptable subject to the             cases, it should be demonstrated by the applicant following conditions in addition to those specified        that (1) the impact test results for the material in the Code Case: The maximum measured ulti-               meet code requirements and (2) the material is mate tensile strength (UTS) of the component                not subject to stress corrosion cracking by virtue support material should not exceed 170 Ksi in               of the fact that (a) a corrosive environment is not view of the susceptibility of high-strength materi-        present and (b) the component that contains the als to brittleness and stress corrosion cracking.          material has essentially no residual stresses or as- Certain applications may exist where a UTS value          sembly stresses, and it does not experience fre- of up to 190 Ksi could be considered acceptable            quent sustained loads in service. In the last sen- for a material and, under this condition, the De-          tence of paragraph 5.3, reference should be sign Specification should specify impact testing          made to paragraph 4.5.2.2, "Alternate Atmos- for the material. For these cases, it should be            phere Exposure Time Periods Established by demonstrated by the applicant that (1) the im-            Test," of the AWS D. 1.1 Code for the evidence pact test results for the material meet code re-          presented to and accepted by the Authorized In- quirements and (2) the material is not subject to          spector concerning exposure of electrodes for stress corrosion cracking by virtue of the fact            longer periods of time.


that (a) a corrosive environment is not present S...      and (b) the component that contains the material        N-71-11      06-17-82    Additional Materials for Com- has essentially no residual stresses or assembly                    02-14-83    ponent Supports Fabricated stresses, and it does not experience frequent sus-                              by Welding, Section III, Divi- tained loads in service.                                                        sion 1, Subsection NF, Class
N-60-3
                                                                                          1, 2, 3, and MC Component Supports
09-05-85 Material for Core Support
      1644-9      01-07-80 Additional Materials for Corn- (N-71-9)    05-11-81 ponent Supports Fabricated                Code Case N-71-11 was acceptable subject to the by Welding, Section III, Divi-          following conditions in addition to those condi- sion    1, Subsection    NF,          tions specified in the Code Case: The maximum Class 1, 2, 3, and MC Com-             measured ultimate tensile strength (UTS) of the ponent Supports                        component support material should not exceed
07-27-88 Structures, Section III, Divi
                                                                      170 Ksi in view of the susceptibility of high- Code Case 1644-9 was acceptable subject to the             strength materials to brittleness and stress corro- following condition in addition to those condi- sion cracking. Certain applications may exist tions specified in the Code Case: In the last sen- where a UTS value of up to 190 Ksi could be tence of paragraph 5.3, reference should be                considered acceptable for a material and, under made to paragraph 4.5.2.2, "Alternate Atmos-                this condition, the Design Specification should phere Exposure Time Periods Established by specify impact testing for the material. For these Test," of the AWS D. 1.1 Code for the evidence cases, it should be demonstrated by the applicant presented to and accepted by the Authorized In- that (1) the impact test results for the material spector concerning exposure of electrodes for              meet code requirements and (2) the material is longer periods of time.                                    not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not N-71-10        05-11-81  Additional Materials for Com-          present and (b) the component that contains the
05-13-91 sion 1 Code Case N-60-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.
                    06-17-82  ponent Supports Fabricated              material has essentially no residual stresses or by Welding, Section III, Divi-          assembly stresses, and it does not experience sion 1, Subsection NF, Class          frequent sustained loads in servic


====e. In the last====
N-60-4
                              1, 2, 3, and MC Component              sentence of paragraph 5.3, reference should Supports                              be made to paragraph 4.5.2.2, "Alternate
05-13-91 Material for Core Support
                                                            1.85-13
02-15-94 Structures, Section III, Divi sion 1 Code Case N-60-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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. The maximum yield strength of strain-hardened austenitic stainless steel should not ex ceed 90,000 psi in view of the susceptibility of this ma terial to environmental cracking.


Atmosphere Exposure Time Periods Established                  Code Case N-71-13 was acceptable subject to the by Test," of the AWS D.1.1 Code for the evi-                 following condition in addition to those condi- dence presented to and accepted by the Author-               tions specified in the Code Case: The maximum ized Inspector concerning exposure of electrodes              measured ultimate tensile strength (UTS) of the for longer periods of time.                                  component support material should not exceed
1626
                                                                  170 Ksi in view of the susceptibility of high- N-71-12     02-14-83    Additional Materials for Com-          strength materials to brittleness and stress corro-
03-02-74 Normalized and Tempered
            02-20-84    ponent Supports Fabricated              sion cracking. Certain applications may exist by Welding, Section III, Divi-          where a UTS value of up to 190 Ksi could be sion 1, Class 1, 2, 3, and MC           considered acceptable for a material and, under this condition, the Design Specification should Code Case N-71-12 was acceptable subject to the specify impact testing for the material. For these following condition in addition to those condi- cases, it should be demonstrated by the applicant tions specified in the Code Case: The maximum that (1) the impact test results for the material measured ultimate tensile strength (UTS) of the meet code requirements and (2) the material is component support material should not exceed not subject to stress corrosion cracking by virtue
01-08-79
    170 Ksi in view of the susceptibility of high- of the fact that (a) a corrosive environment is not strength materials to brittleness and stress corro- present and (b) the component that contains the sion cracking. Certain applications may exist material has essentially no residual stresses or as- where a UTS value of up to 190 Ksi could be sembly stresses, and it does not experience fre- considered acceptable for a material and, under quent sustained loads in service. In the last sen- this condition, the Design Specification should tence of paragraph 5.3, reference should be specify impact testing for the material. For these made to paragraph 4.5.2.2, "Alternate Atmos- cases, it should be demonstrated by the applicant phere Exposure Time Periods .Established by that (1) the impact test results for the material Test," of the AWS D.1.1 Code for the evidence meet code requirements and (2) the material is presented to and accepted by the Authorized In- not subject to stress corrosion cracking by virtue spector concerning exposure of electrodes for of the fact that (a) a corrosive environment is not longer periods of time. Paragraph 16.2.2 is not present and (b) the component that contains the acceptable as written and should be replaced material has essentially no residual stresses or as- with the following: When not exempted by sembly stresses, and it does not experience fre-
1-1/4 Cr Low Alloy Steel Forg ings, Section 1, Section III, and Section VIII, Division 1 and 2
                                                                  16.2.1 above, the postweld head treatment shall quent sustained loads in service. In the last sen- be performed in accordance with NF-4622 ex- tence of paragraph 5.3, reference should be cept that for ASTM A-710 Grade A material, it made to paragraph 4.5.2.2, "Alternate Atmos- shall be at least 1000*F (540'C) and shall not phere Exposure Time Periods Established by exceed 1150'F (620 0 C) for Class 1 and Class 2 Test," of the AWS D. 1.. Code for the evidence material and 1175°F (640'C) for Class 3 mate- presented to and accepted by the Authorized In- rial. The new holding time at temperature for spector concerning exposure of electrodes for weld thickness (nominal) shall be 30 minutes for longer periods of time. The provisions of para-
1634
                                                                  1/2 inch or less, 1 hour per inch for thickness graph 4.3 are not acceptable on a generic basis.
07-01-74 Use of SB-359 for Section III,
08-12-74 Class 3 Construction
1634-1
08-12-74 Use of SB-359 for Section III,
08-13-76 Class 3 Construction
1644
08-12-74 Additional Materials for Com
04-28-75 ponent Supports Section III,  
Subsection NF, Class 1, 2, 3, and MC Construction Code Case 1644 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The maximum measured ulti mate tensile strength of the component support material should not exceed 170 Ksi.


over 1/2 inch to 5 inches, and 5 hours plus 15 Paragraph 16.2.2 is not acceptable as written and minutes for each additional inch over 5 inches.
1644-1  
04-28-75 Additional Materials for Com
06-30-75 ponent Support-Section III,
Subsection NF, Class 1, 2, 3, and MC Construction Code Case 1644-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.


should be replaced with the following: When not The fracture toughness requirements as listed in exempted by 16.2.1, above, the postweld heat this Code Case apply only to piping supports and treatment shall be performed in accordance with not to Class 1, 2, and 3 component supports.
1644-2  
06-30-75 Additional Materials for Com
11-03-75 ponent Supports-Section III,
Subsection NF, Class 1, 2, 3 and MC Construction Code Case 1644-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.


NF-4622 except that for ASTM A-710 Grade A
1644-3
                                                                  The fracture toughness of Classes 1, 2, and 3 material it shall be at least 1000'F (540'C) and component supports shall be characterized in. ac- shall not exceed 1150'F (620°C) for Class 1 and cordance with paragraph 5.3.4 of the USNRC
11-03-75 Additional Materials for Com
    Class 2 material and 1175'F (640 0 C) for Class 3 Standard Review Plan (NUREG-0800) or on a material. The new holding time at temperature case-by-case basis.
03-01-76 ponent Supports--Section III,
Subsection NF, Class 1, 2, 3 and MC Construction Code Case 1644-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.


for weld thickness (nominal) shall be 30 minutes for 1/2 inch or less, 1 hour per inch for thickness N-71-14    12-05-85  Additional Materials for Sub- over 1/2 inch to 5 inches, and 5 hours plus 15
1644-4
                                                                          12-16-86  section NF, Classes 1, 2, 3 minutes for each additional inch over 5 inches.
03-01-76 Additional Materials for Com
08-13-76 ponent Supports and Alternate Design Requirements for Bolted Joints, Section III, Divi sion 1, Subsection NF, Class 1,
2, 3 and MC Construction Code Case 1644-4 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. For these cases, it should be demonstrated by he applicant that (1) the impact test results for the material meet code requirements and (2) the material is not sub-
1.85-13


and MC Component Supports Fabricated by Welding, Sec- N-71-13      02-20-84    Additional Materials for Sub- tion III, Division 1
ject 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.
              12-05-85    section NF, Classes 1, 2, 3 and MC Component Supports              Code Case N-71-14 was acceptable subject to the Fabricated by Welding, Sec-            following condition in addition to those condi- tion III, Division 1                    tions specified in the Code Case: The maximum
                                                      1.85-14


measured ultimate tensile strength (UTS) of the         1722        11-03-75  Vacuum, Carbon Deoxidized component support material should not exceed                         01-08-79  SA-508 Forgings, Section III,
1644-5
  170 Ksi in view of the susceptibility of high-                                 Division 1, and VIII, Division strength materials to brittleness and stress corro-                            1 and 2 sion cracking.. Certain applications may exist         1741        12-22-75  Interim Rules for the Re- where a UTS value of up to 190 Ksi could be                         01-14-77  quired Number of Impact considered acceptable for a material and, under                                 Tests for Rolled Shapes, Sec- this condition, the Design Specification should                                 tion III, Division 1, Subsec- specify impact testing for the material. For these                             tion NF, Component Supports cases, it should be demonstrated by the applicant       1755        04-26-76  Alternative Rules for Exami- that (1) the impact test results for the material                   01-14-77  nation of Welds in Piping, meet code requirements and (2) the material is                                 Class 1 and 2 Construction, not subject to stress corrosion cracking by virtue                             Section III, Division 1 of the fact that (a) a corrosive environment is not     1759        08-13-76  Material for Internal Pressure present and (b) the component that contains the                     05-15-78  Retaining Items for Pressure material has essentially no residual stresses or                               Relief Valves, Section III,
08-13-76 Additional Materials for Com
  assembly stresses, and it does not experience fre-                              Division 1, Class 1, 2, and 3 quent sustained loads in service. In the last              Code Case 1759 was acceptable subject to the sentence of paragraph 5.3, reference should be              following condition in addition to those condi- made to paragraph 4.5.2.2, "Alternate Atmos-                tions specified in the Code Case: Applicants us- phere Exposure Time Periods Established by                  ing this Case should also use Code Case 1711 for Test," of the AWS D. 1.1 Code for the evidence              the design of pressure relief valves.
03-03-77 ponent Supports and Alternate Design Requirements for Bolted Joints, Section III, Divi sion 1, Subsection NF, Class 1,
2, 3 and MC Construction Code Case 1644-5 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. 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 sub ject 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.


presented to and accepted by the Authorized In- spector concerning exposure of electrodes for          N-188        08-29-77  Use of Welded Ni-Fe-Cr-Mo- longer periods of time. Paragraph 16.2.2 is not                    05-15-78  Cu (Alloy 825) and Ni-Cr acceptable as written and should be replaced                                  Mo-Cb (Alloy 625) Tubing, with the following: When not exempted by                                      Section I1i, Division 1, Class
1644-6
    16.2. 1, above, the postweld head treatment shall                              3 be performed in accordance with NF-4622 ex-            N-207        03-20-78 Use of Modified SA-479 Type cept that for ASTM A-710 Grade A material, it                      03-19-79 XM-19        for Section III,
03-03-77 Additional Materials for Com
    shall be at least 1000°F (5407C) and shall not                                Division 1, Class 1, 2 or 3 exceed 1150'F (620'C) for Class 1 and Class 2                                  Construction material and 1175*F (640°C) for Class 3 mate-          N-224        11-20-78 Use of ASTM A500 Grade B
11-21-77 ponent Supports and Alternate Design Requirements for Bolted Joints, Section III, Divi sion 1, Subsection NF, Class 1,  
    rial. The new holding time at temperature for                      05-11-81 and ASTM A501 Structural weld thickness (nominal) shall be 30 minutes for                              Tubing for Welded Attach-
2, 3 and MC Construction Code Case 1644-6 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. 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 sub j ect 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.
    1/2 inch or less, 1 hour per inch for thickness                                ments for Section III, Class 2 over 1/2 inch to 5 inches, and 5 hours plus 15                                  and 3 Construction minutes for each additional inch over 5 inches.        N-242        04-12-79 Materials Certification, Sec- The fracture toughness requirements as listed in                    04-10-80 tion III, Division 1, Classes 1, this Code Case apply only to piping supports and                                2,   3,    MC,      and    CS
    not to Class 1, 2, and 3 component supports.                                    Construction The fracture toughness of Classes 1, 2, and 3              Code Case N-242 was acceptable subject to the component supports shall be characterized in ac-            following condition in addition to those condi- cordance with paragraph 5.3.4 of the USNRC                  tions specified in the Code Case: Applicants Standard Review Plan (NUREG-0800) or on a                   should identify the components and supports re- case-by-case basis.                                        quiring the use of paragraphs 1.0 through 4.0 of the Code Case in their Safety Analysis Reports.


1682        01-29-75  Alternate Rules for Material      N-246-1      09-07-82    SB-169, Alloy C 61400, Sec-
1644-7
            08-11-75  Manufacturers and Suppliers,                    05-25-83    tion III, Division 1, Class 3 Section III, Subarticle NA-        N-249        01-07-80    Additional      Materials    for
11-21-77 Additional Materials for Com (N-71-7) 05-15-78 ponent Supports, Section III,  
                        3700                                            05-11-81    Component Supports Fabri-
Division 1, Subsection NF,  
1714        08-11-75 Postweld Heat Treatment of                                    cated Without Welding, Sec-
Class 1, 2, 3 and MC Compo nent Supports Code Case 1644-7 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. 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 sub ject 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.
            07-11-774 P-1 Material, Section III,                                   tion III, Division 1, Subsec- Class MC                                                    tion NF, Class 1, 2, 3,
1714-1      07-11-774 Postweld Heat Treatment of                                  and MC Component Supports (N-102-1)    08-28-78 P-1 Material, Section III,                Code Case N-249 was acceptable subject to the Class MC                                following condition in addition to those condi-
                                                    1.85-15


tions specified in the Code Case: Footnote 2 of            N-249-6      04-08-85    Additional Material for Sub- the Code Case should apply to all materials listed                      09-05-85    section NF, Classes 1, 2, 3, in Tables 1, 2, 3, 4, and 5 of the Code Case and                                    and MC Component Supports should be so indicated on line 5 of the "Reply."                                    Fabricated Without Welding, Section III, Division 1 N-249-1      05-11-81  Additional     Materials     for         Code Case N-249-6 was acceptable subject to the
1644-8
            06-17-82  Component Supports Fabri-                following conditions in addition to those condi- cated    Without      Welding,           tions specified in the Code Case: The fracture Section III, Division 1, Sub-            toughness requirements apply only to piping sup- section NF, Class 1, 2, 3, and            ports and not to Classes 1, 2, and 3 component MC Component Supports                   supports. The fracture toughness of Classes 1, 2, and 3 component supports should be character- Code Case N-249-1 was acceptable subject to the              ized in accordance with paragraph 5.3.4 of the following condition in addition to those condi-              USNRC Standard Review Plan (NUREG-0800)
05-15-78 Additional Materials for Com (N-71-8) 01-07-80 ponent Supports, Section III,  
    tions specified in the Code Case: Paragraph 7 of             or on a case-by-case basis. The following is to be the "Reply" should reference the requirements                added to paragraph (5) of the Case: For these of NF-2600 instead of NF-2800. This is a typo-                cases, it should be demonstrated by the owner graphical error in that NF-2800 does not exist.              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 N-249-2      06-17-82    Additional Materials for Sub- of the fact that (a) a corrosive environment is not
Division 1, Subsection NF,  
            02-14-83    section NF Class 1, 2, 3, and present and (b) the component that contains the MC Component          Supports material has essentially no residual stresses or as- Fabricated Without Welding, sembly stresses, and it does not experience fre- Section III, Division 1 quent sustained loads in service.
Class 1, 2, 3 and MC Compon ent Supports Code Case 1644-8 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. 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 sub ject 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-249-3      02-14-83 Additional Materials for Sub-
1.85-14 I
            02-20-84 section NF Class 1, 2, 3, and          N-249-7      09-05-85   Additional Material for Sub- MC Component          Supports                    12-05-85    section NF, Classes 1, 2, 3, Fabricated Without Welding,                                    and MC Component Supports Section III, Division 1                                        Fabricated Without Welding, (
N-249-4      02-20-84 Additional Material for Sub-                                      Section III, Division 1
            09-17-84 section NF, Classes 1, 2, 3,                Code Case N-249-7 was acceptable subject to the and MC Component Supports                following conditions in addition to those condi- Fabricated Without Welding,              tions specified in the Code Case: The fracture Section III, Division 1                  toughness requirements apply only to piping sup- ports and not to Classes 1, 2, and 3 component The fracture toughness requirements as listed in supports. The fracture toughness of Classes 1, 2, Code Case N-249-4 apply only to piping.supports and 3 component supports should be character- and not to Classes 1, 2, and 3 component sup-                ized in accordance with paragraph 5.3.4 of the ports. The fracture toughness of Classes 1, 2, and USNRC Standard Review Plan (NUREG-0800)
    3 component supports should be characterized in or on a case-by-case basis. The following is to be accordance with paragraph 5.3.4 of the USNRC
                                                                  added to paragraph- (5) of the Case: For these Standard Review Plan (NUREG-0800) or on a cases, it should be demonstrated by the owner case-by-case basis.


that (1) the impact test results for the material meet Code requirements and (2) the material is N-249-5      09-17-84 Additional Material    for Sub-            not subject to stress corrosion cracking by virtue
1644-9
              04-08-85 section NF, Classes      1, 2, 3,           of the fact that (a) a corrosive environment is not and. MC Component     Supports           present and (b) the component that contains the Fabricated Without    Welding,           material has essentially no residual stresses or Section III, Division 1                   assembly stresses, and it does.not experience fre- quent sustained loads in service.
01-07-80
Additional Materials for Com (N-71-9) 05-11-81 ponent Supports Fabricated by Welding, Section III, Division
1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case 1644-9 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: In the last sentence of para graph 5.3, reference should be made to paragraph
4.5.2.2, "Alternate Atmosphere Exposure Time Peri ods Established by Test," of the AWS D. 1.1 Code for the evidence presented to and accepted by the Autho rized Inspector concerning exposure of electrodes for longer periods of time.


The fracture toughness requirements as listed in Code Case N-249-5 apply only to piping supports          N-249-8      12-05-85    Additional Material for Sub- and not to Classes 1, 2, and 3 component sup-                          12-16-86    section NF, Classes 1, 2, 3, ports. The fracture toughness of Classes 1, 2, and                                  and MC Component Supports
N-71-10 05-11-81
    3 component supports should be characterized in                                    Fabricated Without Welding, accordance with paragraph 5.3.4 of the USNRC                                        Section III, Division 1 Standard Review Plan (NUREG-0800) or on a                    Code Case N-249-8 was acceptable subject to the case-by-case basis.                                          following conditions in addition to those
06-17-82 Additional Materials for Com ponent Supports Fabricated by Welding, Section III, Division
                                                        1.85-16
1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case N-71-10 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port 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 con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults 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 ma terial 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time.


conditions specified in the Code Case: The frac-             N-379      04-04-83   Bimetallic Tubing Section III,
N-71-11
      ture toughness requirements apply only to piping                        07-18-85    Division 1, Class 1 supports and not to Classes 1, 2, and 3 compo-              N-418      12-05-84    Use of Seamless Ni-Fe-Cr- nent supports. The fracture toughness of Classes                        07-30-86    Mo-Cu Low Carbon (UNS
06-17-82
      1, 2, and 3 component supports should be char-                                     N08028 and UNS N08904)
02-14-83 Additional Materials for Com ponent Supports Fabricated by Welding, Section III, Division
      acterized in accordance with paragraph 5.3.4 of                                     Tubing, Section III, Division the     USNRC          Standard      Review      Plan                              1, Classes 2 and 3 (NUREG-0800) or on a .case-by-case basis. The              N-438      02-23-87    Fe-24.5Ni-2lCr-6.5 Mo-0.2N
1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case N-71-11 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port 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 con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults for the material meet code requirements and (2)  
      following is to be added to paragraph (5) of the                        03-08-89    (Alloy UNS N08367) Seam- Case: For these cases, it should be demonstrated                                    less and Welded Pipe, Tube, by the owner that (1) the impact test results for                                   Plate, Bar, Fittings, and Forg- the material meet Code requirements and (2) the                                     ings, Class 2 and 3 Construc- material is not subject to stress corrosion crack-                                  tion, Section III, Division 1 ing by virtue of'the fact that (a) a corrosive envi-        N-443      05-07-87    High Yield Strength Cr-Mo ronment is not present and (b) the component                             03-08-89    Steel, Class 1 Components, that contains the material has essentially no re-                                    Section III, Division 1 sidual stresses or assembly stresses, and it does not experience frequent sustained loads in                         4. Code Cases for Class 1 components that are service.                                                     not on the approved list of this guide (paragraph C. 1)
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 ma terial 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time.
N-26519        01-07-80      Modified SA-487 Castings,             or other regulatory guides, or for which authorization
              09-01-83      Section III, Division 1, Class 1     by the Commission has not been granted, are not
              12-31-84                                            acceptable for Class 1 components.


05-19-85 N-299          11-17-80    Use of Nickel-Chromium-                       5. Code Cases for other classes of components
N-71-12 02-14-83 Additional Materials for Comi
              11-28-83    Molybdenum-Columbium Al-             that are not on the approved list of this guide
02-20-84 ponent Supports Fabricated by Welding, Section III, Division
              07-18-85    loy 625 Forgings, Section III,         (paragraph C. 1) or other regulatory guides should be considered not acceptable on a generic basis.
1, Class 1, 2, 3, and MC
Code Case N-71-12 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the materi al 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time. The provisions of paragraph 4.3 are not accept able on a generic basis. Paragraph 16.2.2 is not accept-
1.85-15


Division 1, Class 2 and Class 3 Components N-321          07-13-81    Use of Modified SA-249,  
able as written and should be replaced with the follow ing: When not exempted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710 Grade A materi al it shall be at least 1000'F (540'C) and shall not exceed 1150'F (6200C) for Class 1 and Class 2 mate rial and 1175°F (640'C) for Class 3 material. The new holding time at temperature for weld thickness (nomi nal) shall be 30 minutes for 1/2 inch or less, I hour per inch for thickness over 1/2 inch to 5 inches, and 5 hours plus 15 minutes for each additional inch over 5 inches.


==D. IMPLEMENTATION==
N-71-13
07-13-84     Type 304 for Section III,
02-20-84 Additional Materials for Sub
              12-05-85     Division 1, Class 1 Construc- tion                                      The purpose of this section is to provide information to applicants regarding the use of this N-337          04-02-82    Use of ASTM B525-70 Grade regulatory guide.
12-05-85 section NF, Classes 1, 2, 3 and MC Component Supports Fab ricated by Welding, Section III,
Division 1 Code Case N-71-13 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the mate rial 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning 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 ex empted 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 shall be at least 1000'F (540'C) and shall not exceed 1150'F
(6200C) for Class 1 and Class 2 material and 1175°F
(6400C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30
minutes for 1/2 inch or less, 1 hour per inch for thick ness over 1/2 inch to 5 inches, and 5 hours plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap- ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes
1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.


05-19-85    II, Type II, Sintered Austen-
N-71-14
              07-18-85     itic Stainless Steel for Class 2,           1. Except for those Code Cases that have been
12-05-85 Additional Materials for Sub
                            3, and MC Component Stan-            annulled by action of the ASME, the NRC staff has dard Supports, Section III,           found the Code Cases listed in this regulatory guide Division 1                           under regulatory position C. 1 acceptable for N-352          07-16-82    Use of SA-638 Grade 660              appropriate use. Other Code Cases may be
12-16-86 section NF, Classes 1, 2, 3 and MC Component Supports Fab ricated by Welding, Section III,
              05-19-85    Forgings and Bars Below              considered for use in accordance with footnote 6 of
Division 1 Code Case N-71-14 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that(a) a corrosive environment is not present and (b) the component that contains the materi al 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning 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 ex empted 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 shall be at least 1000'F (540'C) and shall not exceed 1150'F
              07-18-85    700°F Without Stress Rupture          the Codes and Standards rule, §50.55a of 10ýCFR
(620'C) for Class 1 and Class 2 material and 1175"F
                            Tests, Section III, Division 1       Part 50.
(640'C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30
minutes for 1/2 inch or less, 1 hour per inch for thick ness over 1/2 inch to 5 inches, and 5 hours plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes
1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan-
1.85-16


N-370          02-14-83    Modified      SA-705      Grade
dard Review Plan (NUREG-0800) or on a case-by-case basis.
              07-18-85    XM-13 Forgings, Section III,              2. Components ordered to a specific version of a Division 1                            Code Case need not be changed because a N-370-1        07-18-85    Modified      SA-705      Grade      subsequent revision of the Code Case is listed as the
              12-05-85    XM-13 Forgings, Section III,          approved version in this guide.


Division 1
N-71-15
                                                                      3. Components ordered to a Code Case that was N-371          02-14-83    12 Cr-IW-1Mo-1/4V Marten- previously approved for use need not be changed
12-16-86 Additional Materials for Sub
              07-18-85    sitic Stainless Steel Valve In- because the Code Case has been subsequently ternals, Section III, Division 1
12-16-89 section NF, Classes 1, 2 3 and
    0                                                            annulled.
02-12-93 MC Component Supports Fab ricated by Welding, Section III, Division 1 Code Case N-71-15 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port 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 con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults 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 ma terial 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for evidence pres ented to and accepted by the Authorized Inspector con cerning 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 ex empted 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 shall be at least 1000'F (540'C) and shall not exceed 1150'F
(620'C) for Class 1 and Class 2 material and 1175°F
(640'C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30
minutes for 1/2 inch or less, 1 hour per inch for thick ness over 1/2 inch to 5 inches, and 5 hours plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes
1,2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.


' Code Case N-265 was allowed to expire on 1-7-83 be- cause of an administrative error. It was reinstated on 9-1-83          4. Code Cases on the approved list may be with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265      applied to components that were in process of was allowed to expire on 12-31-84 (mandatory annulment            construction prior to the effective date of the Code date). It was reinstated as N-265-1 on 5-19-85. Because of the circumstances and because there were no changes in Case within the limits specified in the Code Case and the Code Case, the NRC considers that this Case was in effect    applicable regulations or recommended in other during the period of 12-31-84 through 5-19-85.                    regulatory guides.
1682
01-29-75 Alternate Rules for Material
08-11-75 Manufacturers and Suppliers, Section III, Subarticle NA-3700
1714
08-11-75 Postweld Heat Treatment of
07-11-777 P-1 Material, Section III, Class MC
1714-1
07-11-777 (N-102-1) 08-28-78 Postweld Heat Treatment of P-1 Material, Section III, Class MC
1722
11-03-75 Vacuum, Carbon Deoxidized
01-08-79 SA-508 Forgings, Section III,  
Division 1, and VIII, Division
1 and 2
1741
12-22-75 Interim Rules for the Required
01-14-77 Number of Impact Tests for Rolled Shapes, Section III, Di vision 1, Subsection NF, Com ponent Supports
1755
04-26-76 Alternative Rules for Examina
01-14-77 tion of Welds in Piping, Class
1 and 2 Construction, Section III, Division 1  
1759
08-13-76 Material for Internal Pressure
05-15-78 Retaining Items for Pressure Relief Valves, Section III, Di vision 1, Class 1, 2, and 3 Code Case 1759 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants using this Case should also use Code Case 1711 for the design of pres sure relief valves.


N-188
08-29-77 Use of Welded Ni-Fe-Cr-Mo-Cu
05-15-78 (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625) Tubing, Section III, Division 1, Class 3 N-207
03-20-78 Use of Modified SA-479 Type
03-19-79 XM-19 for Section 1II, Divi sion 1, Class 1, 2, or 3 Construction N-224
11-20-78 Use of ASTM AO00 Grade B
05-11-81 and ASTM A501 Structural Tubing for Welded Attach ments for Section III, Class 2 and 3 Construction N-242
04-12-79 Materials Certification, Section
04-10-80
III, Division 1, Classes 1, 2, 3, MC, and CS Construction
1.85-17
1.85-17


APPENDIX
Code Case N-242 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants should identify the components and supports requiring the use of para graphs 1.0 through 4.0 of the Code Case in their Safety Analysis Reports.
                    NUMERICAL LISTING OF CODE CASES*
 
N-4-11 (1337-11)                              N-246-2                                        N-404 N-7-1                                         N-249-9                                        N-418-1 N-17 (1474-1)                                  N-265-1                                         N-438-1 N-20-3                                          N-294                                          N-439 N-26 (1527)                                    N-329                                          N-440
N-246-1 09-07-82 SB-169, Alloy C 61400, Sec
N-60-3 N-337-1                                        N-441 N-71-15 N-348-1                                        N-443-1 N-127 (1755-1)
05-25-83 tion III, Division 1, Class 3 N-249
N-131-1 (1759-1)                               N-351                                          N-459 N-188-1                                        N-367                                          N-466 N-205                                          N-370-2                                       N-469 N-224-1                                        N-379-1                                        N-470
01-07-80 Additional Materials for Com
  *Code Case 1624 was inadvertently listed in the appendix of Regulatory Guide 1.85, Revision 1.
05-11-81 ponent Supports Fabricated Without Welding, Section III,
Division 1, Subsection NF,
Class 1, 2, 3, and MC Compo nent Supports Code Case N-249 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Footnote 2 of the Code Case should apply to all materials listed in Tables 1, 2, 3, 4, and 5 of the Code Case and should be so indicated on line 5 of the "Reply."
N-249-1 05-11-81
06-17-82 Additional Materials for Com ponent Supports Fabricated Without Welding, Section III,
Division 1, Subsection NF,
Class 1, 2, 3, and MC Compo nent Supports Code Case N-249-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Paragraph 7 of the "Reply"
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 06-17-82 Additional Materials for Sub
02-14-83 section NF Class 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 N-249-3  
02-14-83
02-20-84 N-249-4 02-20-84
09-17-84 Additional Materials for Sub section NF Class 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Additional Material for Sub section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 The fracture toughness requirements as listed in Code Case N-249-4 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The frac- ture toughness of Classes 1, 2, and 3 component sup ports should be characterized in accordance with para graph 5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis.
 
N-249-5 09-17-84 Additional Material for Sub
04-08-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 The fracture toughness requirements as listed in Code Case N-249-5 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The frac ture toughness of Classes 1, 2, and 3 component sup ports should be characterized in accordance with para graph 5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis.
 
N-249-6 04-08-85 Additional Material for Sub
09-05-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-6 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph
5.3.4 of the USNRC Standard Review Plan (NUREG
0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-249-7
09-05-85 Additional Material for Sub
12-05-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-7 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph
5.3.4 of the USNRC Standard Review Plan (NUREG-
1.85-18
1.85-18


THIS DOCUMENT WAS PRINTED USING RECYCLED PAPER.
0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-249-8 12-05-85 Additional Material for Sub
12-16-86 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-8 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph
5.3.4 of the USNRC Standard Review Plan (NUREG
0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-249-9
12-16-86 Additional Material for Sub
05-06-89 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-9 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph
5.3.4 of the USNRC Standard Review Plan (NUREG
0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro- sion 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-249-10 05-06-89 Additional Material for Sub
05-13-91 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-10 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph
5.3.4 of the USNRC Standard Review Plan (NUREG
0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-249-11 05-13-91 Additional Material for Sub
02-12-93 section NF, Classes 1, 2, 3 and MC Component Supports fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-11 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph
5.3.4 of the USNRC Standard Review Plan (NUREG
0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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.
 
1.85-19
 
N-249-12 02-12-93 Additional Material for Sub
05-11-94 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-12 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: the fracture toughness re quirements 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 paragraph
5.3.4 of the USNRC Standard Review Plan (NUREG
0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, is should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-26519 01-07-80
09-01-83
12-31-84
05-19-85 N-299
11-17-80
11-28-83
07-18-85 N-321
07-13-81
07-13-84
12-05-85 N-337
04-02-82
05-19-85
07-18-85 Modified SA-487 Castings, Section III, Division 1, Class 1 Use of Nickel-Chromium Molybdenum-Columbium Alloy 625 Forgings, Section III, Division 1, Class 2 and Class 3 Components Use of Modified SA-249, Type
304 for Section III, Division 1, Class 1 Construction Use of ASTM B525-70 Grade II, Type II, Sintered Austenitic Stainless Steel for Class 2, 3, and MC Component Standard Supports, Section III,
Division 1 N-352
07-16-82
05-19-85
07-18-85 Use of SA-638 Grade 660
Forgings and Bars Below
7000 F Without Stress Rupture Tests, Section III, Division 1 N-370
02-14-83 Modified SA-705 Grade
07-18-85 XM-13 Forgings, Section III,
Division 1 N-370-1 07-18-85 Modified SA-705 Grade
12-05-85 XM-13 Forgings, Section III,
Division 1 N-371
02-14-83
12 Cr-1W-lMo-1/4V Marten
07-18-85 sitic Stainless Steel Valve In ternals, Section III, Division 1 N-379
04-04-83 Bimetallic Tubing Section III,
07-18-85 Division 1, Class 1 N-418
12-05-84 Use of Seamless Ni-Fe-Cr-Mo
07-30-86 Cu Low Carbon (UNS N08028 and UNS N08904) Tubing, Section III, Division 1, Classes
2 and 3 N-438
02-23-87 Fe-24.5Ni-21Cr-6.5 Mo-0.2N
03-08-89 (Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction, Section III, Division 1 N-438-1
03-08-89
03-05-90
Fe-24.5Ni-21Cr-6.5Mo-0.2N
(Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction, Section III, Division 1 N-438-2 03-05-90
UNS N08367 Material, Sec
07-27-92 tion III, Division 1, Class 2 and
3 Construction N-441
02-23-87
12-11-89
11-25-92 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction, Section III,
Division 1
19Code Case N-265 was allowed to expire on 1-7-83 because of an ad ministrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on
5-19-85. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ef fect during the period of 12-31-84 through 5-19-85.
 
N-443
05-07-87 High Yield Strength Cr-Mo
03-08-89 Steel, Class 1 Components, Section III, Division 1 N-466
03-08-89 Modified 9Cr-iMo Material
04-30-90
Section III, Division 1, Classes
1, 2, and 3
1.85-20
L
 
N-474
05-06-89 Design Stress Intensities and
03-05-90 Yield Strength Values for Alloy
690 With a Minimum Yield Strength of 35 ksi, Class 1 Components, Section III, Divi sion 1 N-474-1 03-05-90
03-05-93
12-09-93 Design Stress Intensities and Yield Strength Values for UNS
N06690 With a Minimum Spe cified Yield Strength of 35 ksi, Class 1 Components, Section III, Division 1 N-492
12-03-90
Grade 9 Titanium Alloy, Sec
05-11-94 tion III, Division I, Class 1, 2, and 3 N-497
05-13-91 Use of Fe-Ni-Cr-Mo-N
12-09-93 (CN-3MN) Cast Materials, Section III, Division 1, Class 2 and 3 Construction
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 the final version of this regulatory guide under Regulatory Position 1 acceptable for appropriate use. Other Code Cases may be considered for use in accordance with foot note 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 of 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.
 
1.85-21
 
APPENDIX
NUMERICAL LISTING OF CODE CASES
N-4-11 (1337-11)
N-294 N-443-1 N-7-1 N-329 N-466-1 N-20-3 N-351 N-469 N-60-5 N-370-2 N-474-2 N-71-16 N-404 N-484-1 N-131-1 (1759-1)
N-418-1 N-492-1 N-188-1 N-438-3 N-497-1 N-205 N-439 N-502 N-246-2 N-440
N-510
N-249-13 N-441-1 N-525 N-265-1
1.85-22
 
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-1049, May 1997). No changes were necessary, so a separate value/impact statement for Regulatory Guide 1.85 has not been prepared. A copy of the draft value/impact 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-1049.


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Latest revision as of 02:05, 17 January 2025

1, (Draft Was Issued as DG-1049), Materials Code Case Acceptability ASME Section III, Division 1
ML003740365
Person / Time
Issue date: 05/31/1999
From:
Office of Nuclear Regulatory Research
To:
References
RG-1.85, Rev 31
Download: ML003740365 (23)
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 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 theAmerican 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

3UIDE

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 materials and testing that are generally acceptable to the NRC staff for implementa tion in the licensing of light-water-cooled nuclear pow er plants. This guide is being revised to update the NRC

staff positions on new Code Cases, revised Code Cases, and annulled Code Cases subsequent to Revision 30 of the guide 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 availableto 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's regulations, techniques usedbythestaff in evaluating specificproblemsorpos-

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 guides are not substitutes for regulations, and compliance

4. Environmental and Siting

9. Antitrust and Financial Review with them is not required. Methods and solutions differentfrom those set out in theguides

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.

Singlecopies of regulatory guides may be obtained free of charge bywriting to the Repro This guide was issued after consideration of comments received from the public. Com- duction and Distribution Services Section, Office of the Chief Information Officer, U.S. Nu ments and suggestionsfor improvements in these guides areencouraged atall 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 emall 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 20555-0001.

Royal Road, Springfield, VA 22161.

U.S. NUCLEAR REGULATORY COMMISSION

REGULATORY (

OFFICE OF NUCLEAR REGULATORY RESEARCH

REGULATORY GUIDE 1.85 (Draft was issued as DG-1 049)

MATERIALS 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 Boiler and Pressure Vessel Committee of the ASME publishes a document entitled "Code Cases."1 Generally, the individual Code Cases that make up this document explain the intent of Code rules or provide for alternative requirements under special circum stances.

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 materials and testing.

All published Code Cases in the area of materials and testing 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 C.l.a 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 nuclear power plants. Their use is acceptable within the limitations stated in the "Inquiry" and "Reply" sections of each individual Code Case, within the limitations of such NRC or other requirements as may exist, and within the additional limitations recommended by the NRC staff given with the individual Code Cases in the listing. The categorization of Code Cases used in this guide is intended to facilitate the Code Case listing and is not intended to indicate a limitation on its usage.

a. Materials-Oriented Code Cases (Code Case Number, Date of ASME Approval, 3 and title)

(1)

N-7-1 Code Cases Involving Plate

12-13-82 High Yield Strength Steel, Sec

02-20-86 tion III, Division 1, Class 1

02-20-89 Vessels

02-05-92

(2) Code Cases Involving Pipe and Tubes N-20-3

11-30-88 SB-163 Nickel-Chromium-Iron

12-16-91 Tubing (Alloy 600 and 690)

and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0

Ksi and Cold Worked Alloy

800 at a yield strength of 47.0

Ksi,Section III, Division 1, Class 1

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.

1.85-2 Vt L

N-188-1

05-15-78

07-13-81

07-13-84

07-13-87

08-14-90

08-14-93 N-294

08-25-80

05-25-83

07-30-86

07-30-89

07-27-92 N-404

04-05-84

04-05-87

12-11-89

12-11-92 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 SB-148 Alloy 952 and 954, and SB-62 Alloy 836 Fittings,Section III, Division 1, Class 2 Annealed Alloy UNS N06625 Over UNS N06600 Bimetallic Tubing,Section III, Division 1, Class 1 Code Case N-404 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: The outside layer of the bimetal lic 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 de sign wall thickness.

N-418-1

07-30-86 Use of Seamless Ni-Fe-Cr-Mo

07-30-89 Cu Low Carbon (UNS N08028

07-27-92 and UNS N08904) Tubing,Section III, Division 1, Classes

2 and 3 N-439

02-23-87 Use of 20Cr-18Ni-6Mo (Alloy

12-11-89 UNS S31254) Forgings,

12-11-92 Plate, Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction,Section III,

Division 1 N-441-1

11-25-92 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction,Section III,

Division 1 N-466-1

04-30-90 Modified 9Cr-iMo Material,

02-12-93 Section III, Division 1, Classes

1, 2, and 3 N-502

02-05-92 SA-268, Grade 26-3-3 (UNS

S44660)Section III, Division 1, Classes 2 and 3

(3) Codes Cases Involving Bars and Forgings

1337-11

05-15-78 Special Type 403 Modified (N-4-11) 07-13-81 Forgings or Bars,Section III,

07-13-84 Division 1, Class 1 and CS

07-13-87

08-14-90

08-14-93 N-370-2

12-05-85

12-05-88

12-16-91 Modified SA-705 Grade XM-13 Forgings,Section III,

Division 1 N-469

03-08-89 Martensitic Stainless Steel for

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

(4) Code Cases Involving General Usage N-60-5

02-15-94 Material for Core Support Structures,Section III,

Division 1 Code Case N-60-5 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: 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. The maximum yield strength of strain hardened austenitic stainless steel should not exceed

90,000 psi in view of the susceptibility of this material to environmental cracking.

N-71-16 02-12-93 Additional Materials for Sub section NF, Classes 1, 2, 3 and MC Component Supports Fabri cated by Welding,Section III,

Division 1 Code Case N-71-16 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the mate rial 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, "Alter-

1.85-3

nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pre sented 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 ex empted 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 shall be at least 1000'F (540'C) and shall not exceed 1150'F

(620'C) for Class 1 and Class 2 material and 1175°F

(640' C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30

minutes for 1/2 inch or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thick ness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes

1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.

1759-1

05-15-78 Material for Internal Pressure (N-131-1) 07-13-81 Retaining Items for Pressure

12-11-81 Relief Valves,Section III,

12-05-84 Division 1, Class 1, 2, and 3

12-05-87

12-03-90

12-03-93 Code Case 1759-1 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants using this Case should also use Code Case 1711 for the design of pres sure relief valves.

cated Without Welding,Section III, Division 1 Code Case N-249-13 is acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph

5.3.4 of the USNRC Standard Review Plan (NU

REG-0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, it should be demonstrated by the owner that (1)

the impact test results for the material meet Code re quirements and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corro sive 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-265-1

05-19-85

05-19-88

03-14-91

03-14-94 N-438-3

07-27-92 N-440

02-23-87

12-11-89

12-11-92 Modified SA-487 Castings,Section III, Division 1, Class 1 UNS N08367 Material,Section III, Division 1, Class 2 and 3 Construction Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction,Section III, Division 1 U

N-443-1

03-08-89 High Yield Strength Cr-Mo

04-30-92 Steel, Class 1 Components,Section III, Division 1 N-205

05-15-78

07-13-81

07-13-84

07-13-87

08-14-90

08-14-93 N-246-2 05-25-83

07-30-86

07-30-89

07-27-92 N-249-13 05-11-94 Use of Ductile Iron SA-395 for Section III, Division 1, Class 3 Construction SB-169, Alloy C61400, Sec tion III, Division 1, Class 3 N-474-2

12-09-93 N-492-1

05-11-94 N-497-1

12-09-93 Additional Material for Subsec tion NF, Classes 1, 2, 3, and MC Component Supports Fabri- Design Stress Intensities and Yield Strength Values for UNS

N06690 With a Minimum Spe cified Yield Strength of 35 ksi, Class 1 Components,Section III, Division 1 Grade 9 Titanium Alloy, Sec tion III, Division 1, Class 1, 2, and 3 Use of Fe-Ni-Cr-Mo-N

(CN-3MN) Cast Materials, Sec tion III, Division 1, Class 2 and

3 Construction

1.85-4

b. Testing-oriented Code Cases

(1) Code Case Involving Plates

(2) Code Case Involving Bars and Forgings N-329

12-11-81 Examination of Bar Material,

12-05-84 Section III, Division 1, Class 1

12-05-87

12-03-90

12-03-93

(3) Code Case Involving Pipe and Tubes Code Case Involving General Usage

07-16-82 Use of Subsize Charpy V

05-19-85 Notch Specimens, Section

05-19-88 III, Division 1

03-14-91

03-14-94

1334-3 (N-2)

1335-10

(N-3-10)

04-29-74

01-08-79

01-01-81

08-28-78

08-28-81

09-16-84 Requirements for Corrosion Resisting Steel Bars and Shapes,Section III

Requirements for Bolting Materials,Section III

N-5-1

12-13-82 Nickel Chromium Age Harden

12-13-85 able Alloys (Alloy X750),

Section III, Division 1, Classes

1, 2, 3, MC, and CS

1345-2 (N-6)

1395-4 (N-9-4)

03-09-72 Requirements for Nickel

03-01-79 Molybdenum-Chromium-Iron Alloys,Section III

01-08-79 SA-508, Class 2 Forgings with

07-01-82 Modified Manganese Content,Section III

N-484-1

12-16-91 Real Time Radioscopic Ex amination of Welds, Class 1 Components,Section III, Divi sion 1 N-510

12-09-93 Borated Stainless Steel for Class CS Core Support Struc tures and Class 1 Components,Section III, Division 1 N-525

12-09-93 Design Stress Intensities and Yield Strength Values for UNS

N06690 with a Minimum Speci fied Yield Strength of 30 Ksi, Class 1 Components,Section III, Division 1

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 that were annulled on or after July 1, 1974, are listed in the following by number, effective dates, 4 and title.5

1141-1

08-31-61 Foreign Produced Steel

07-23-76

1332-7 (N-1-7)

01-08-79 Requirements for Steel Forg

07-01-82 ings,Section III, Division 1

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 1401-1,1493-1, and 1599, which were listed in the original issue of this guide, were annulled by ASME action prior to July 1, 1974.

1407-3

07-01-74 (N-10)

01-08-79

01-21-82

09-17-84

09-17-87

1412-4

11-03-75

01-01-77 Time of Examination for Classes 1, 2, and 3,Section III

Vessels Modified High Yield Strength Steel for Section III, Division

1, Class 1 Vessels Code Case 1412-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided 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.

1414-5 (N-11-5)

08-29-77 High Yield Strength Cr-Mo

08-29-80 Steel for Section III, Division

1, Class 1 Vessels Code Case 1414-5 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

1423-2

03-09-72 Wrought Type 304 and 316

07-01-77 with Nitrogen Added, Sections I, III, VIII, Division 1 and 2 Code Case 1423-2 was acceptable subject to com pliance with the recommendations contained in Regu latory Guides 1.31, "Control of Ferrite Content in Stainless Steel Weld Metal," and 1.44, "Control of the Use of Sensitized Stainless Steel."

1.85-5

(4)

N-351

1434-1

03-09-72 Postweld Heat Treatment of

01-01-78 SA-487 Class 8N Steel Cast ings,Section III

cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

1456-2 (N-15)

06-25-73 Substitution of Ultrasonic Ex

03-01-79 amination for Progressive Penetrant or Magnetic Particle Examinations of Partial Pene tration and Oblique Nozzle At tachment Welds,Section III

1474-1

10-29-71 (N-17)

01-08-79

01-21-82

01-21-85

01-21-88

01-21-91

1475-16

03-02-74

07-01-75 Integrally Finned Tubes for Section III

Ferritic-Austenitic Stainless Steel Seamless Tubes for Sec tion III, Class 2 and 3 Construction

1498-1

11-06-72 SA-508-Class 2 and 3, Mini (N-22)

01-08-79 mum Tempering Temperature,

07-01-82 Section III

1515

03-09-72 Ultrasonic Examination of

07-01-77 Ring Forgings for Shell Sec tions,Section III, Class 1 Ves sels

1521-1

04-29-74 Use of H-Grades of SA-240,

01-01-78 SA-479, SA-336, and SA-358,Section III

Code Case 1521-1 was acceptable subject to com pliance with the recommendations contained in Regu latory Guides 1.31, "Control of Ferrite Content in Stainless Steel Weld Metal," and 1.44, "Control of the Use of Sensitized Stainless Steel."

1527

06-26-727 Integrally Finned Tubes, Sec (N-26)

01-08-79 tion III

01-21-82

01-21-85

01-21-88

01-21-91

1528-3

11-03-75 High Strength Steel SA-508,

01-01-78 Class 2 and SA-541, Class 2 Forgings,Section III, Class 1 Components Code Case 1528-3 was acceptable subject to the following condition in addition to those conditions spe

6Code Case was annulled on date as indicated, but the annulment wasfirst so indicated in Revision 12 of this guide.

7Corrected Date.

15296

06-29-72

07-01-73

1531

08-14-72

03-21-77 Materials for Instrument Line Fittings,Section III

Electrical Penetrations, Special Alloys for Electrical Penetra tion Seals,Section III

1532

08-14-72 Section III, Class 3 Compo

01-01-78 nents Made of 8 Percent and 9 Percent Nickel Steel

1542-1 (N-33)

1557-3 (N-37-3)

04-29-74

01-08-79

01-21-82

01-21-85

01-08-79

07-01-82 Type 403 Forgings or Bars for Bolting Material,Section III

Steel Products Refined by Sec ondary Remelting,Section III

and VIII, Division 1 and 2

1567

03-03-73 Testing Lots of Carbon and

01-01-78 Low Alloy Steel Covered Elec trodes,Section III

1568

03-03-73 Testing Lots of Flux Cored and

01-01-78 Fabricated Carbon and Low Alloy Steel Welding Elec trodes,Section III

1571

03-03-73 (N-41)

01-08-79

01-21-82

01-21-85

1578

06-25-73 (N-43)

01-08-79

07-01-82

1583

06-25-73

03-21-77

15876

08-13-73

12-31-75

1590

08-13-73

03-21-77

1602-1

04-29-74

12-31-74 Additional Material for SA-234 Carbon Steel Fittings,Section III

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

Use of 80-40 Carbon Steel Castings,Section III

SA-508 Class 3 Forgings with

0.4/1.0 Ni for Section III and VIII, Division 2 Construction Chemical Analysis Variations,Section III Construction Use of SB-42 Alloy 122, SB-111 Alloys 122, 715 and

706, SB-171 Alloys 715 and

706 and SB-466 Alloys 706 and 715,Section III, Class 2 and 3 Components

1603

12-17-73 Toughness Tests When Cross

07-01-74 Section Limits Orientation and Location of Specimens

1.85-6

Cr-Ni-Mo-V Bolting Material for Section III, Class 1 Compo nents

1608-1

12-17-73 Use of ASME SB-265,

03-21-77 SB-337, SB-338, SB-348, and SB-381, Grades 1, 2, 3, and 7 Unalloyed Titanium and ASTM B-363 Titanium Weld ing Fittings,Section III, Class

2 and 3 Components

1612

12-17-73 Use of Type 308 Stainless Steel (N-56)

07-01-78 Rod and Bar for Section III,

Class 1, 2, 3, and CS Construc tion

1613

12-17-73

01-01-78

1615

12-17-73

01-01-78

16166

12-17-73

07-01-75 Use of SA-372 Class IV Forg ings,Section III Construction Use of A587-73,Section III,

Class 3 Construction Ultrasonic Examination of Seamless Austenitic Steel Pipe,Section III, Class 1 Construc tion

16226

03-02-74 PWHT of Repair Welds in Car

01-01-76 bon Steel Castings,Section III,

Class 1, 2, and 3

1625

03-02-74

12-31-74

1626-1

01-08-79 (N-65-1) 01-21-82

01-21-85

1634-2

08-13-76 (N-68)

07-01-78

16378

04-29-74

01-01-75

16456

08-12-74

01-01-76 Repair of Section III Class 2 and 3 Tanks Normalized and Tempered

1-1/4 Cr Low Alloy Steel Forg ings,Section I and Section III

Use of SB-359 for Section III,

Division 1, Class 3 Construc tion Effective Date for Compliance with NA-3700 of Section III

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

Construction

1648

08-12-74 SA-537 Plates for Section III,

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

16496

08-12-74 Modified SA 453-GR 660 for

01-01-76 Class 1, 2, 3, and CS Construc tion

8Code Case 1637 was accepted only on a case-by-case basis.

1605

11-05-73

11-20-78

03-17-80

1698 (N-92)

06-30-757

11-20-78

07-13-81 Waiver of Ultrasonic Transfer Method,Section III, V, and VIII, Division 1 Code Case 1698 was acceptable subject to the fol lowing conditions in addition to those specified in the Code Case: The material from which the basic calibra tion block is fabricated should be of the same product form, alloy, and heat treatment as the material being ex amined. Alloys of equivalent P-number grouping may be used for the fabrication of calibration blocks if ad justments to signal height can be made to compensate for sound beam attenuation difference between the cal ibration block and the material under examination by following the transfer method procedure of T-535.1(d),

Article 5,Section V, ASME B&PV Code, 1977 edition.

1713

08-11-75 Small Material Items, Section

12-31-75 III, Division 1, Class 1, 2, 3, CS and MC

1714-2

08-28-78 (N-102-2) 07-13-81

06-30-84

1722-1

01-08-79 (N-107-1) 01-08-82 Postweld Heat Treatment of P-1 Material,Section III,

Class MC

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

Division 1

1.85-7

1650

08-12-74 Use of SA-414 Grade C for

12-31-74 Class 2 and 3 Components,Section III, Division 1

1664

11-04-74 Use of Cr-Ni-Fe-Mo-Cu-Cb

03-21-77 Stabilized Alloy Cb-3 for Sec tion III Class 2 and 3 Construc tion

1666

11-04-74 Use of SB-12, Alloy 122 for

07-01-75 Class 2 and 3 Construction

1682-1

08-11-75 Alternate Rules for Material

12-31-75 Manufacturers and Suppliers,Section III, Subarticle NA-3700

16846

03-03-75 A637 Grade 718 for Bolting

01-01-76 Class 1 and 2 Construction

16906

04-28-75 Stock Materials for Section III

01-01-77 Construction,Section III, Divi sion 1

1691

04-28-75 Ultrasonic Examination in Lieu

01-01-78 of Radiography of Repair Welds for Vessels,Section III,

Class 1

1747 (N-124)

1748 (N-125)

1754 (N-126)

1755-1 (N-127)

03-01-76

01-08-79

07-13-81

07-13-84

07-13-87 Requirements for Martensitic Stainless Steel Forgings with

13% Chromium and 4% Nick el,Section III, Division 1

03-01-76 Low Carbon Austenitic Stain

07-01-78 less Steel Pipe Welded With Filler Metal,Section III, Divi sion 1, Construction

01-14-77

01-07-80

12-13-82

02-20-86

12-07-87

07-01-88

01-14-77

01-07-80

02-14-83

02-20-86

02-20-89

02-20-92 Hard Surfacing by the Spray Fuse Method,Section III,

Class 1, 2, and 3 Construction Alternative Rules for Examina tion of Welds in Piping, Sec tion III, Class 1 and 2 Construction

1724

11-03-75 Deviation from the Specified (N-108)

07-01-78 Silicon Ranges in ASME Ma terial Specifications,Section III, Division 1, and VIII, Divi sion 1 and 2

1728

11-03-75 Steel Structural Shapes and

07-01-77 Small Material Products for Component Supports,Section III, Division 1 Construction

1740

12-22-75 Weld Metal Test,Section III,

07-01-76 Class 1, 2, 3, MC and CS

1741-1

01-14-77 Interim Rules for the Required

01-01-78 Number of Impact Tests for Rolled Shapes,Section III, Di vision 1, Subsection NF, Com ponent Supports

1742

03-01-76 Use of SB-75 Annealed Copper

07-01-76 Alloy 122,Section III, Divi sion 1, Class 2 Construction

1743

03-01-76 Use of SB-98 Cu-SiB Rod

07-01-76 CDA651 Section III, Division

1, Class 2 Components

1746

03-01-76 Leak Testing of Seal Welds, (N-123)

03-01-79 Section III, Division 1, Class 1,

2, and 3 Construction

1770

(N-139)

08-13-76 Testing of Electroslag Wire and

01-01-79 Flux for Class 1, 2, 3, MC, and CS Construction,Section III,

Division 1

1772

08-13-76 (N-140)

08-30-79

07-16-82

12-31-85

1773

08-13-76

07-01-77 Use of SA-453 Bolts in Service Below 800'F Without Stress Rupture Tests,Section III,

Division 1 Use of Other Product Forms of Materials for Valves,Section III, Division 1

1777

08-13-76 Use of SA-106, Grade C in

07-01-77 Class MC Construction, Sec tion III, Division 1

1781 (N-147)

1E

09-10-76 Use of Modified SA-487 Grade

07-01-78 CA6NM,Section III, Division

1, Class 1, 2, 3, MC or CS

1782

09-10-76 (N-148)

08-30-79

07-16-82

06-30-83

1787

09-10-76

01-01-78

1793 (N-156)

1794 (N-157)

1795 (N-158)

01-14-77

01-07-80

02-14-83

02-14-86

01-14-77

01-07-80

01-07-83

01-14-77

07-01-78 Use of Copper-Nickel Alloy

962 for Castings,Section III,

Division 1, Class 3 Construction Depth of Weld Repairs for Forgings,Section III, Division

1, Class 1, 2, 3, MC and CS

Construction Structural Steel Rolled Shapes,Section III, Division 1, Class 2,

3, and MC

Use of Seamless Al-Br, Alloy CDA 614 Pipe,Section III,

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

1.85-8

1760

04-26-76 Maximum Dimensions for Iso

01-01-78 lated Pores in Welds--Class 1 Components,Section III, Divi sion 1

1766

04-26-76 Testing Requirements for

07-01-77 Welding Materials, Class 1, 2,

3, MC and CS Construction,Section III, Division 1

1767

04-26-76 Examination of Tubular Prod

01-01-77 ucts Without Filler Metal Class 1 Construction,Section III, Division 1

1798

01-14-77 Use of ASTM A352-75,

01-01-78 Grades LCA and LCC,Section III, Division 1, Class 1, 2, and

3

1810

03-03-77 Testing Lots of Carbon Steel

03-03-80 Solid, Bare Welding Electrode or Wire,Section III, Division

1, Class 1, 2, 3, MC, and CS

18199

03-23-77 Use of Type XM-19 for

01-01-78 Construction,Section III, Divi sion 1, Class 1, 2, 3

1819-110,11 03-23-77 (N-176-1) 03-23-80

08-25-80

08-25-83

1820

(N-177)

03-23-77

03-17-80

02-14-83

.01-01-84 Use of Type XM-19 for Construction,Section III,

Division 1, Class 1, 2, and 3 Alternative Ultrasonic Examination Technique,Section III, Division 1 N-178

05-25-77 Use of ASTM B271, CDA

01-01-80

954, Alloy 9C for Class 3 Construction,Section III, Divi sion 1 N-180

07-11-77 Examination of Springs for

07-01-78 Class 1 Component Standard Supports,Section III,

Division 1 N-181

07-11-77 Steel Castings Refined by the

07-11-80

Argon Decarburization Pro cess,Section III, Division 1, Construction N-183

07-11-77 Use of Modified SA-182 Grade

01-01-80

F22 for Section III, Division 1, Class 1, 2 and 3 Construction N-190

08-29-77 Use of SA-455 for Class 3

07-01-78 Components,Section III, Divi sion 1 N-204

03-20-78 Use of Modified SA-508, Class

01-01-81

3, and SA-541, Class 3 for Sec tion III, Division 1, Class 1, 2, and 3 Construction N-206

03-20-78

03-16-81

06-30-83 N-207-1 03-19-79

01-21-82

01-21-85 Use of ASTM B151-75 Copper-Nickel Alloy 706 Rod and Bar for Section III,

Division 1, Class 3 Construc tion Use of Modified SA-479 Type XM-19 for Section III, Divi sion 1, Class 1, 2, 3, or CS

Construction N-223

11-30-78 Requirements for Stainless

11-20-81 Steel Precipitation Hardening,Section III, Division 1, Class MC

N-224-1 05-11-81

04-05-84

04-05-87

04-05-90

Use of ASTM A500 Grade B

and ASTM A501 Structural Tubing for Welded Attach ments for Section III,

Class 2, 3, and MC

N-225

11-20-78 Certification and Identification

01-01-81 of Material for Component Supports,Section III, Division

1 N-227

07-09-79 Examination of Repair Welds,

07-09-82 Section III, Class 2 and 3 Tanks N-242-1

04-10-80

05-06-83

06-30-84 Materials Certification,Section III, Division 1, Classes 1, 2, 3, MC, and CS Construction Code Case N-242-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Applicants should identify in their Safety Analysis Reports the components and sup ports for which the Code Case is being applied and should specify the respective paragraphs of the Code Case.

9This Code Case was reaffirmed as Case 1819-1. See Regulatory Position

2, Case 1819-1, for the effective dates.

10Case 1819 (N-176) was annulled December 31,1977. However, itwas later reaffirmed to continue providing rules pertaining to external pres sure charts.

llCode Case N-176-1: The 3-23-80 is an annulment date. This Casewas allowed to expire on 3-23-80 because of an administrative error. It was reinstated on 8-25-80 with no technical changes. It is, therefore, con sidered to be in effect during that lapse in time. The 8-25-83 is the man datory annulment date. The Case did not appear in Revisions 18-21 of this guide because of the ASME administrative error.

N-245

07-09-79

07-16-82

07-17-85 Use of ASTM B61-76 and B62-76 Copper Alloy Castings for Section III, Division 1, Class 3 Construction N-246

07-09-79 Use of SB-169, Alloy CA 614,

09-07-82 Section III, Division 1, Class 3 N-248

08-30-79 Alternative Reference Radio

07-01-80 graphs,Section III, Division 1, Classes 1, 2, 3, MC, and CS

Construction

1.85-9

N-259

01-07-80 Ni-Cu-Al Bolting Material SB

02-14-83

164 Modified,Section III,

01-01-84 Division 1, Class 3 N-26512

01-07-80 Modified SA-487 Castings,

09-01-83 Section III, Division 1, Class 1

12-31-84

05-19-85 N-267

01-07-80

Double-Wall Radiography,

07-01-81 Section III, Division 1, Class 1 and 2 N-274

03-17-80

09-07-82

06-30-86 Alternative Rules for Examina tion of Weld Repairs for Section III, Division 1 Construction Code Case N-274 was acceptable subject to the fol lowing condition 13 in addition to those conditions spe cified in the Code Case. Paragraph 6 should be expand ed as follows: The ultrasonic examination procedures shall be proven by actual demonstration, to the satisfac tion of the Authorized Nuclear Inspector, that the pro cedures are capable of detecting unacceptable cracks according to Section XI requirements.

N-277

03-17-80

Use of Type XM-19 Austenitic

09-17-80 Stainless Steel for Section III,

Division 1, Class MC

Construction N-295

01-15-81

12-11-81

06-30-82 NCA-1140, Materials,Section III, Division 1 N-296

11-17-80

Welding Material,Section III,

12-01-83 Division 1 Construction N-298

11-17-80

Examination of Component

12-01-83 Supports,Section III, Division

1, Class 1, 2, 3, and MC

N-299-1

07-18-85

02-23-87 Use of Nickel-Chromium Molybdenum-Columbium Alloy 625 Forgings,Section III, Division 1, Class 2 and Class 3 Components

12Code Case N-265 was allowed to expire on 1-7-83 because of an ad ministrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on

5-19-85. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ef fect during the period of 12-31-84 through 5-19-85.

13The reason for the conditional acceptance of paragraph 6 is to make cer tain that there is a qualified ultrasonic testing procedure capable of de tecting small flaws and differentiating the small flaws from geometric reflectors. This paragraph does not in any way alter the acceptance cri teria as specified in paragraph 3.

N-310-1 08-14-81 Certification of Bolting Materi

07-01-82 als,Section III, Division 1, Class 1, 2, 3, MC and CS

Code Case N-310-1 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 (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-317

07-13-81 ASTM A276 Bar Section III,

07-01-82 Division 1 N-321-1

12-05-85 Use of Modified SA-249,

12-05-88 Grade TP 304,Section III, Di vision 1, Class 1 N-337-1

07-18-85 Use of ASTM B525-70 Grade

07-18-88

11, Type II, Sintered Austentic

03-14-91 Stainless Steel for Class 2, 3,

03-14-94 and MC Component Standard Supports,Section III, Divi sion 1 N-342

04-02-82 Use of SA-249 and SA-312

04-02-85 Type 317 Stainless Steel, Sec tion III, Division 1, Classes 1,

2, and 3 N-348

09-09-82 Use of SA-574 Socket Head

09-07-8514 Cap Screws,Section III, Divi sion 1 Code Case N-348 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: 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-348-1

09-07-8514 Use of SA-574 Socket Head

02-20-86 Cap Screws,Section III, Divi

02-20-89 sion 1 Code Case N-348-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.

14Code Case N-348 was annulled on 9-7-85. It was reinstated as N-348-1 on 2-20-86. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that the Code Case was in effect during the period 9-7-85 through 2-20-86.

1.85-10

N-348-2 08-14-90 Use of SA-574 Socket Head

08-14-93 Cap Screws,Section III, Divi sion 1 Code Case N-348-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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-352-1 07-18-85 Use of SA-638 Grade 660

06-30-86 Forgings and Bars Below

700'F Without Stress Rupture Tests,Section III, Division 1 N-353

07-16-82

05-19-85

09-05-88 N-367

02-14-83

02-19-86

02-19-89 Marking of SA-354 Grade BD

Bolting,Section III, Division 1 SA-372 Type V, Grade 1, Class B,Section III, Division 1 N-371-1 07-18-85

12CR-1W-1Mo-1/4V Marten

07-18-88 sitic Stainless Steel Valve In ternals,Section III, Division 1 N-372

02-14-83 SB-163 Ni-Fe-Cr-Mo-Cu Alloy

12-31-83

825 (UNS N08825) Tubing,Section III, Division 1 N-378

10-28-83 Examination of Piping Support

10-28-8615 Material,Section III, Division

1, Class 1 N-379-1 07-18-85

07-18-88

03-14-91

07-18-91 N-388

07-25-83

07-30-86

02-23-87 Bimetallic Tubing Section III,

Division 1, Class 1 Component Support Bolting,Section III, Division 1, Classes

2, 3, and MC

N-398

02-20-84 Reporting of Charpy-V Notch

02-20-87 Test Results,Section III, Divi sion 1 Code Case N-398 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The Code Case is not acceptable to steam generator or reactor coolant pump supports.

Applicants wishing to use this Code Case should indi cate in the Safety Analysis Report the component sup ports to which the case is applied for review on a case by-case basis.

15The annulment date of 12-31-84 that was listed in Revisions 24 and 25 was in error. The annulment date should be 10-28-86.

N-459

05-04-88

03-14-91

03-14-94 SA-508 Basic Oxygen-Ladle Furnace Process for Code Construction,Section III, Divi sion 1 N-470

03-08-89 Class MC Material Require

03-08-92 ments [NE-2121(c)],Section III, Division 1 N-475

12-11-89 Materials in Inventory, Section

12-11-92 III, Division 1 N-482

03-05-90 Direct Quenched Stainless Bar,

03-05-93 ASTM A 479-88b,Section III,

Division 1 N-501

07-27-92 Alternative Rules to

12-31-93 NCA-3800, 1990 Addenda 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. 17

1332-6

03-09-72 Requirements for Steel Forg

01-08-79 ings,Section III and VIII, Divi sion 2

1335-9

04-29-74

08-28-78

1337-9

04-29-74

04-28-75

1337-10 04-28-75

05-15-78

1344-5

04-29-74 (N-5)

01-08-79

01-21-82

12-13-82 Requirements for Bolting Materials Special Type 403 Modified Forgings or Bars,Section III

Special Type 403 Modified Forgings or Bars,Section III

Nickel-Chromium, Age-Har denable Alloys (Alloy X750),

Section III

1358-5

11-03-75 High Yield Strength Steel, Sec (N-7)

01-08-79 tion III, Division 1, Class 1

01-21-82 Vessels

12-13-82 Code Case 1358-5 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

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

17Code Cases 1334-2, 1337-7, 1344-3, 1484, 1521, and 1542, which were listed in the original issue of this guide, were revised by the ASME

prior to July 1, 1974.

1.85-11

1395-3

11-06-72 SA-508, Class 2 Forgings with

01-08-79 Modified Manganese Content,Section III or Section VIII, Di vision 2

1407-2

06-26-72 Time of Examination for Class

07-01-74

1, 2, and 3,Section III Vessels

1414-3

11-03-75 High Yield Strength Cr-Mo

03-01-76 Steel for Section III, Division

1, Class 1 Vessels Code Case 1414-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

1414-4

03-01-76 High Yield Strength Cr-Mo

08-09-77 Steel for Section III, Division

1, Class 1 Vessels Code Case 1414-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

1484-1

04-29-74 SB-163 Nickel-Chromium-Iron

11-04-74 Tubing (Alloy 600) at a Speci fied Minimum Yield Strength of 40.0 Ksi,Section III, Class 1

1484-2

11-04-74 SB-163 Nickel-Chromium-Iron

08-13-76 Tubing (Alloy 600 and 690) at a Specified Minimum Yield Strength of 40.0 Ksi,Section III, Class 1

1484-3 (N-20)

08-13-76

08-30-79

07-16-82

05-19-85

09-05-85 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690)

and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0

Ksi,Section III, Division 1, Class 1 N-20-1

09-05-85 SB-163 Nickel-Chromium-Iron

12-07-87 Tubing (Alloy 600 and 690)

and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0

Ksi,Section III, Division 1, Class 1 N-20-2

12-07-87 SB-163 Nickel-Chromium-Iron

11-30-88 Tubing (Alloy 600 and 690)

and Nickel-Iron-Chromium Alloy 800 at a Specified Mini- mum Yield Strength of 40.0

Ksi, and Cold Worked Alloy

800 at a Yield Strength of 47.0

Ksi,Section III, Division 1, Class 1

149218

10-29-71 Post Weld Heat Treatment,

03-03-75 Section I, III and VIII, Division

1 and 2

1557-2

12-17-73 Steel Products Refined by Sec

01-08-79 ondary Remelting

1618

03-02-74 Material for Core Support

03-03-75 StructuresSection III, Subsec tion NG

Code Case 1618 was acceptable subject to the fol lowing conditions in addition to those specified in the Code Case: 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 accept able on a generic basis.

1618-1

03-03-75 Material for Core Support

03-01-76 Structures,Section III, Subsec tion NG

Code Case 1618-1 was acceptable subject to the following condition in addition to those specified in the Code Case: 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.

1618-2 (N-60)

03-01-76 Material for Core Support

01-08-79 StructuresSection III, Division

01-21-82

1, Subsection NG

05-25-83 Code Case 1618-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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-60-1

05-25-83 Material for Core Support

09-17-84 Structures,Section III, Divi sion 1 Code Case N-60-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.

18Code Case 1492 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceptable listing

1.85-12 L

N-60-2

09-17-84 Material for Core Support

09-05-85 Structures,Section III, Divi sion 1 Code Case N-60-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.

N-60-3

09-05-85 Material for Core Support

07-27-88 Structures,Section III, Divi

05-13-91 sion 1 Code Case N-60-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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.

N-60-4

05-13-91 Material for Core Support

02-15-94 Structures,Section III, Divi sion 1 Code Case N-60-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: 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. The maximum yield strength of strain-hardened austenitic stainless steel should not ex ceed 90,000 psi in view of the susceptibility of this ma terial to environmental cracking.

1626

03-02-74 Normalized and Tempered

01-08-79

1-1/4 Cr Low Alloy Steel Forg ings, Section 1,Section III, and Section VIII, Division 1 and 2

1634

07-01-74 Use of SB-359 for Section III,

08-12-74 Class 3 Construction

1634-1

08-12-74 Use of SB-359 for Section III,

08-13-76 Class 3 Construction

1644

08-12-74 Additional Materials for Com

04-28-75 ponent SupportsSection III,

Subsection NF, Class 1, 2, 3, and MC Construction Code Case 1644 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The maximum measured ulti mate tensile strength of the component support material should not exceed 170 Ksi.

1644-1

04-28-75 Additional Materials for Com

06-30-75 ponent Support-Section III,

Subsection NF, Class 1, 2, 3, and MC Construction Code Case 1644-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.

1644-2

06-30-75 Additional Materials for Com

11-03-75 ponent Supports-Section III,

Subsection NF, Class 1, 2, 3 and MC Construction Code Case 1644-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.

1644-3

11-03-75 Additional Materials for Com

03-01-76 ponent Supports--Section III,

Subsection NF, Class 1, 2, 3 and MC Construction Code Case 1644-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.

1644-4

03-01-76 Additional Materials for Com

08-13-76 ponent Supports and Alternate Design Requirements for Bolted Joints,Section III, Divi sion 1, Subsection NF, Class 1,

2, 3 and MC Construction Code Case 1644-4 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. For these cases, it should be demonstrated by he applicant that (1) the impact test results for the material meet code requirements and (2) the material is not sub-

1.85-13

ject 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.

1644-5

08-13-76 Additional Materials for Com

03-03-77 ponent Supports and Alternate Design Requirements for Bolted Joints,Section III, Divi sion 1, Subsection NF, Class 1,

2, 3 and MC Construction Code Case 1644-5 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. 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 sub ject 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.

1644-6

03-03-77 Additional Materials for Com

11-21-77 ponent Supports and Alternate Design Requirements for Bolted Joints,Section III, Divi sion 1, Subsection NF, Class 1,

2, 3 and MC Construction Code Case 1644-6 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. 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 sub j ect 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.

1644-7

11-21-77 Additional Materials for Com (N-71-7) 05-15-78 ponent Supports,Section III,

Division 1, Subsection NF,

Class 1, 2, 3 and MC Compo nent Supports Code Case 1644-7 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. 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 sub ject 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.

1644-8

05-15-78 Additional Materials for Com (N-71-8) 01-07-80 ponent Supports,Section III,

Division 1, Subsection NF,

Class 1, 2, 3 and MC Compon ent Supports Code Case 1644-8 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile 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 cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. 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 sub ject 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.

1.85-14 I

1644-9

01-07-80

Additional Materials for Com (N-71-9) 05-11-81 ponent Supports Fabricated by Welding,Section III, Division

1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case 1644-9 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: In the last sentence of para graph 5.3, reference should be made to paragraph

4.5.2.2, "Alternate Atmosphere Exposure Time Peri ods Established by Test," of the AWS D. 1.1 Code for the evidence presented to and accepted by the Autho rized Inspector concerning exposure of electrodes for longer periods of time.

N-71-10 05-11-81

06-17-82 Additional Materials for Com ponent Supports Fabricated by Welding,Section III, Division

1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case N-71-10 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port 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 con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults 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 ma terial 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time.

N-71-11

06-17-82

02-14-83 Additional Materials for Com ponent Supports Fabricated by Welding,Section III, Division

1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case N-71-11 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port 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 con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults 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 ma terial 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time.

N-71-12 02-14-83 Additional Materials for Comi

02-20-84 ponent Supports Fabricated by Welding,Section III, Division

1, Class 1, 2, 3, and MC

Code Case N-71-12 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the materi al 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time. The provisions of paragraph 4.3 are not accept able on a generic basis. Paragraph 16.2.2 is not accept-

1.85-15

able as written and should be replaced with the follow ing: When not exempted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710 Grade A materi al it shall be at least 1000'F (540'C) and shall not exceed 1150'F (6200C) for Class 1 and Class 2 mate rial and 1175°F (640'C) for Class 3 material. The new holding time at temperature for weld thickness (nomi nal) shall be 30 minutes for 1/2 inch or less, I hour per inch for thickness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 minutes for each additional inch over 5 inches.

N-71-13

02-20-84 Additional Materials for Sub

12-05-85 section NF, Classes 1, 2, 3 and MC Component Supports Fab ricated by Welding,Section III,

Division 1 Code Case N-71-13 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the mate rial 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning 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 ex empted 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 shall be at least 1000'F (540'C) and shall not exceed 1150'F

(6200C) for Class 1 and Class 2 material and 1175°F

(6400C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30

minutes for 1/2 inch or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thick ness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap- ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes

1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.

N-71-14

12-05-85 Additional Materials for Sub

12-16-86 section NF, Classes 1, 2, 3 and MC Component Supports Fab ricated by Welding,Section III,

Division 1 Code Case N-71-14 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that(a) a corrosive environment is not present and (b) the component that contains the materi al 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning 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 ex empted 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 shall be at least 1000'F (540'C) and shall not exceed 1150'F

(620'C) for Class 1 and Class 2 material and 1175"F

(640'C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30

minutes for 1/2 inch or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thick ness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes

1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan-

1.85-16

dard Review Plan (NUREG-0800) or on a case-by-case basis.

N-71-15

12-16-86 Additional Materials for Sub

12-16-89 section NF, Classes 1, 2 3 and

02-12-93 MC Component Supports Fab ricated by Welding,Section III, Division 1 Code Case N-71-15 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port 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 con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults 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 ma terial 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, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for evidence pres ented to and accepted by the Authorized Inspector con cerning 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 ex empted 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 shall be at least 1000'F (540'C) and shall not exceed 1150'F

(620'C) for Class 1 and Class 2 material and 1175°F

(640'C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30

minutes for 1/2 inch or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thick ness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes

1,2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.

1682

01-29-75 Alternate Rules for Material

08-11-75 Manufacturers and Suppliers,Section III, Subarticle NA-3700

1714

08-11-75 Postweld Heat Treatment of

07-11-777 P-1 Material,Section III, Class MC

1714-1

07-11-777 (N-102-1) 08-28-78 Postweld Heat Treatment of P-1 Material,Section III, Class MC 1722

11-03-75 Vacuum, Carbon Deoxidized

01-08-79 SA-508 Forgings,Section III,

Division 1, and VIII, Division

1 and 2

1741

12-22-75 Interim Rules for the Required

01-14-77 Number of Impact Tests for Rolled Shapes,Section III, Di vision 1, Subsection NF, Com ponent Supports

1755

04-26-76 Alternative Rules for Examina

01-14-77 tion of Welds in Piping, Class

1 and 2 Construction,Section III, Division 1

1759

08-13-76 Material for Internal Pressure

05-15-78 Retaining Items for Pressure Relief Valves,Section III, Di vision 1, Class 1, 2, and 3 Code Case 1759 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants using this Case should also use Code Case 1711 for the design of pres sure relief valves.

N-188

08-29-77 Use of Welded Ni-Fe-Cr-Mo-Cu

05-15-78 (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625) Tubing,Section III, Division 1, Class 3 N-207

03-20-78 Use of Modified SA-479 Type

03-19-79 XM-19 for Section 1II, Divi sion 1, Class 1, 2, or 3 Construction N-224

11-20-78 Use of ASTM AO00 Grade B

05-11-81 and ASTM A501 Structural Tubing for Welded Attach ments for Section III, Class 2 and 3 Construction N-242

04-12-79 Materials Certification, Section

04-10-80

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

1.85-17

Code Case N-242 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants should identify the components and supports requiring the use of para graphs 1.0 through 4.0 of the Code Case in their Safety Analysis Reports.

N-246-1 09-07-82 SB-169, Alloy C 61400, Sec

05-25-83 tion III, Division 1, Class 3 N-249

01-07-80 Additional Materials for Com

05-11-81 ponent Supports Fabricated Without Welding,Section III,

Division 1, Subsection NF,

Class 1, 2, 3, and MC Compo nent Supports Code Case N-249 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Footnote 2 of the Code Case should apply to all materials listed in Tables 1, 2, 3, 4, and 5 of the Code Case and should be so indicated on line 5 of the "Reply."

N-249-1 05-11-81

06-17-82 Additional Materials for Com ponent Supports Fabricated Without Welding,Section III,

Division 1, Subsection NF,

Class 1, 2, 3, and MC Compo nent Supports Code Case N-249-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Paragraph 7 of the "Reply"

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 06-17-82 Additional Materials for Sub

02-14-83 section NF Class 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 N-249-3

02-14-83

02-20-84 N-249-4 02-20-84

09-17-84 Additional Materials for Sub section NF Class 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Additional Material for Sub section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 The fracture toughness requirements as listed in Code Case N-249-4 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The frac- ture toughness of Classes 1, 2, and 3 component sup ports should be characterized in accordance with para graph 5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis.

N-249-5 09-17-84 Additional Material for Sub

04-08-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 The fracture toughness requirements as listed in Code Case N-249-5 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The frac ture toughness of Classes 1, 2, and 3 component sup ports should be characterized in accordance with para graph 5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis.

N-249-6 04-08-85 Additional Material for Sub

09-05-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-6 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-249-7

09-05-85 Additional Material for Sub

12-05-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-7 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG-

1.85-18

0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-249-8 12-05-85 Additional Material for Sub

12-16-86 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-8 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-249-9

12-16-86 Additional Material for Sub

05-06-89 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-9 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro- sion 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-249-10 05-06-89 Additional Material for Sub

05-13-91 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-10 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-249-11 05-13-91 Additional Material for Sub

02-12-93 section NF, Classes 1, 2, 3 and MC Component Supports fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-11 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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.

1.85-19

N-249-12 02-12-93 Additional Material for Sub

05-11-94 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-12 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: the fracture toughness re quirements 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 paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, is should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion 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-26519 01-07-80

09-01-83

12-31-84

05-19-85 N-299

11-17-80

11-28-83

07-18-85 N-321

07-13-81

07-13-84

12-05-85 N-337

04-02-82

05-19-85

07-18-85 Modified SA-487 Castings,Section III, Division 1, Class 1 Use of Nickel-Chromium Molybdenum-Columbium Alloy 625 Forgings,Section III, Division 1, Class 2 and Class 3 Components Use of Modified SA-249, Type

304 for Section III, Division 1, Class 1 Construction Use of ASTM B525-70 Grade II, Type II, Sintered Austenitic Stainless Steel for Class 2, 3, and MC Component Standard Supports,Section III,

Division 1 N-352

07-16-82

05-19-85

07-18-85 Use of SA-638 Grade 660

Forgings and Bars Below

7000 F Without Stress Rupture Tests,Section III, Division 1 N-370

02-14-83 Modified SA-705 Grade

07-18-85 XM-13 Forgings,Section III,

Division 1 N-370-1 07-18-85 Modified SA-705 Grade

12-05-85 XM-13 Forgings,Section III,

Division 1 N-371

02-14-83

12 Cr-1W-lMo-1/4V Marten

07-18-85 sitic Stainless Steel Valve In ternals,Section III, Division 1 N-379

04-04-83 Bimetallic Tubing Section III,

07-18-85 Division 1, Class 1 N-418

12-05-84 Use of Seamless Ni-Fe-Cr-Mo

07-30-86 Cu Low Carbon (UNS N08028 and UNS N08904) Tubing,Section III, Division 1, Classes

2 and 3 N-438

02-23-87 Fe-24.5Ni-21Cr-6.5 Mo-0.2N

03-08-89 (Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction,Section III, Division 1 N-438-1

03-08-89

03-05-90

Fe-24.5Ni-21Cr-6.5Mo-0.2N

(Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction,Section III, Division 1 N-438-2 03-05-90

UNS N08367 Material, Sec

07-27-92 tion III, Division 1, Class 2 and

3 Construction N-441

02-23-87

12-11-89

11-25-92 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction,Section III,

Division 1

19Code Case N-265 was allowed to expire on 1-7-83 because of an ad ministrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on

5-19-85. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ef fect during the period of 12-31-84 through 5-19-85.

N-443

05-07-87 High Yield Strength Cr-Mo

03-08-89 Steel, Class 1 Components,Section III, Division 1 N-466

03-08-89 Modified 9Cr-iMo Material

04-30-90

Section III, Division 1, Classes

1, 2, and 3

1.85-20

L

N-474

05-06-89 Design Stress Intensities and

03-05-90 Yield Strength Values for Alloy

690 With a Minimum Yield Strength of 35 ksi, Class 1 Components,Section III, Divi sion 1 N-474-1 03-05-90

03-05-93

12-09-93 Design Stress Intensities and Yield Strength Values for UNS

N06690 With a Minimum Spe cified Yield Strength of 35 ksi, Class 1 Components,Section III, Division 1 N-492

12-03-90

Grade 9 Titanium Alloy, Sec

05-11-94 tion III, Division I, Class 1, 2, and 3 N-497

05-13-91 Use of Fe-Ni-Cr-Mo-N

12-09-93 (CN-3MN) Cast Materials,Section III, Division 1, Class 2 and 3 Construction

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 the final version of this regulatory guide under Regulatory Position 1 acceptable for appropriate use. Other Code Cases may be considered for use in accordance with foot note 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 of 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.

1.85-21

APPENDIX

NUMERICAL LISTING OF CODE CASES

N-4-11 (1337-11)

N-294 N-443-1 N-7-1 N-329 N-466-1 N-20-3 N-351 N-469 N-60-5 N-370-2 N-474-2 N-71-16 N-404 N-484-1 N-131-1 (1759-1)

N-418-1 N-492-1 N-188-1 N-438-3 N-497-1 N-205 N-439 N-502 N-246-2 N-440

N-510

N-249-13 N-441-1 N-525 N-265-1

1.85-22

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-1049, May 1997). No changes were necessary, so a separate value/impact statement for Regulatory Guide 1.85 has not been prepared. A copy of the draft value/impact 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-1049.

1.85-23


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