Regulatory Guide 1.85: Difference between revisions

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{{Adams
{{Adams
| number = ML13350A327
| number = ML13038A104
| issue date = 06/30/1974
| issue date = 11/30/1990
| title = Code Case Acceptability ASME Section III Materials
| title = 7, Materials Code Case Acceptability ASME Section III Division 1
| author name =  
| author name =  
| author affiliation = US Atomic Energy Commission (AEC)
| author affiliation = NRC/RES
| addressee name =  
| addressee name =  
| addressee affiliation =  
| addressee affiliation =  
Line 10: Line 10:
| license number =  
| license number =  
| contact person =  
| contact person =  
| document report number = RG-1.085
| document report number = RG-1.085, Rev. 27
| document type = Regulatory Guide
| document type = Regulatory Guide
| page count = 4
| page count = 20
}}
}}
{{#Wiki_filter:June 1974 U.S. ATOMIC ENERGY COMMISSION
{{#Wiki_filter:U.S. NUCLEAR REGULATORY COMMISSION                                                                         Revision 27 November 1990
                                    REGULATORY
                              REGULATORY GUIDE
                                    DIRECTORATE OF REGULATORY STANDARDS
                                OFFICE OF NUCLEAR REGULATORY RESEARCH
                                                                                                                                  GUIDE
                                                          REGULATORY GUIDE 1.B5 MATERIALS CODE CASE ACCEPTABILITY
                                                                    REGULATORY GUIDE 1.85 CODE CASE ACCEPTABILITY
                                                        ASME SECTION III DIVISION I
                                                            ASME SECTION III MATERIALS


==A. INTRODUCTION==
==A. INTRODUCTION==
g                                            Plants and Fuel Reprocessing Plant-,," to 10 CFR Part 50.
or modified as necessary to ensure a quality product in Section 50.55a, "Codes and Standards," of                                      keeping with the required safety function.


requires, in part, that measures be established for tihe Section 50.55a, "Codes and Standards," of 10 CFR                                   control of special processing of materials and thai proper Part 50, "Licensing of Production and Utilization                                       testing be performed. This regulatory guide lists those Facilities," requires, in part, that components of the                                   Section III ASME Code Cases oriented to materials and reactor coolant pressure boundary be designed, fabri.                                    testing which are generally acceptable to the AEC
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.
  cated, erected, and tested in accordance with the                                       Regulatory staff for implementation in the Ilcnsing of requirements for Class I components of Section III,                                     light-water-cooled nuclear power plants.


"Nuclear Power Plant Components,"' of the American Society of Mechanical Engineers (ASME) Boiler and  
of the American Society of Mechanical Engineers Appendix B, "Quality Assurance Criteria for Nu- (ASME) Boiler and Pressure Vessel Code or equiva- clear Power Plants and Fuel Reprocessing Plants," to lent quality standards. Footnote 6 to §50.55a states
                                                                                        10 CFR Part 50 requires, in part, that measures be that the use of specific Code Cases may be authorized established for the control of special processing of by the Commission upon request pursuant to materials and that proper testing be performed.
 
§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
  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.
 
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.
 
standards are used, Criterion 1 requires that they b e identified and evaluated to determine their applicabi I-                                                     


==B. DISCUSSION==
==B. DISCUSSION==
Pre.*sure Vessel Code or equivalent quality standards.
ity, adequacy, and sufficiency and be supplemente d                                        The Boiler and Pressure Vessel Committee of the le-        ASME publishes a document entitled "Code Cases."'
            '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.
 
guides are encouraged at all times, and guides will be revised, as ap-            Government Printing Office, Post Office Box 37082, WashIngton, UC
              propriate, to accommodate comments and to reflect new Information or              20013-7082, telephone (202)275-2060 or (202)275-2171.
 
experience.
 
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.
 
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.
 
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                             
 
==C. REGULATORY POSITION==
Code, and therefore continued use of the Code Case
                                                                          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
                                                                    "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.
 
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
* 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.
 
basis to attain endorsement status.


Footnote 6 to Section 50,55a states that the use of The Boiler and Pressure Vessel Committee of the specilic Code Cases may be authorized by the Commis- ASME publishes documents entitled "Interpretations of sion upon request pursuant to §50.55a(aX2Xii) which the ASME Boiler and Pressure Vessel Code,"1 These requires that proposed alternatives to the described documents, referred to as "Code Cases," explain the requirements or portions thereof provide an acceptable intent of Code rules or provide Code permission to use level of quality and safety. General Design Criterion I,
(2)  Code Cases involving pipe and tubes:
                                                                                          alternative requirements under special circumstances or
        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
  "Quality Standards and Records." of Appendix A.                                        with suitable precautions. Most Code Cases a~e even-
  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.
0 "General Design Criteria for Nuclear Power Plants." to
  10 CFR Part 50 requires, in part, that structures.


systems, and components important to safety be de.
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
      *Lines indicate substantive changes from Revision 26.        on which the Code Case was reaffirmed by the ASME.


signed, fabricated, erected, and tested to quality stan.
1.85-2


tually superseded by revision to the Code and then are annulled by action of the ASNIE Council.
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,
              01-21-82                                                        07-13-84    Division 1, Class 1 and CS
              01-21-85                                                        07-13-87
              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-
                07-13-81  Cu (Alloy 825) and Ni-Cr-                                      sion 1
                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.


The Code Cases listed in this guide are limited strictly dards commensurate with the importance of the safety                                    to those applicable to Section III which are oriented function to be performed. Where generally recognized                                    toward materials and testing.
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
      -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
                                                                      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
                            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
              (3)  Codes    Cases    involving  bars  and            material has essentially no residual stresses or assembly stresses, and it does not experience fre- forgings:
                                                                      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-
    4 Corrected date.                                                phere Exposure Time Periods Established by
                                                            1.85-3


codes and standards are used, Criterion I requires that they be identified and evaluated to determine their                                          All published Code Cases in the area of materials and applicability, adequacy, and sufficiency and be supple-                                 testing which are applicable to Section IIl of the mented or modified as necessary to assure a quality                                    Code and were in effect on November 5. 1973 were product in keeping with the required safety function.                                   reviewed for inclusion in this guide. Code Cases which Criterion 30, "Quality of Reactor Coolant Pressure                                      were annulled by ASME Council between the November Boundary," of the same appendix requires, in part, that                                5, 1973, and the March 2, 1974, Council meetings are components which are part of the reactor coolant                                        not included in the listing. Code Cases which are not pressure boundary be designed, fabricated, erected, and                                 listed herein are either not endorsed or will require tested to the highest quality standards practical. Appen-                               supplementary provisions on an individual basis to attain dix B. "Quality Assurance Criteria for Nuclear Power                                    endorsement status.
Test," of the AWS D. 1.1 Code for the evidence                    USNRC Standard Review Plan (NUREG-0800)
  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
    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.


l Copics may be obtained from the American Society of Mechanical Engineers, United Engineering Center, 345 East                                The endorsement of a Code Case by this guide
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,
     47th Street, New York, N.Y. 1007.                                                    constitutes acceptance of its technical position for USAEC REGULATORY GUIDES                                      Copies of published guides may be oblaired by request indicating the division$
    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,
                                                                                        desired to the US. Atomic Energy Commission. Washington. D.C. 70545.
     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
    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
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
            12-11-81  Relief Valves,    Section III,                                                                    7°,-
                                                                                                                              \.
                                                                      result in early failure from stress corrosion
            12-05-84  Division 1, Class 1, 2, and 3 cracking.


Regulatory Guides are issued to describe and rnaki availlble to the public          Attention: Director of Regulatory Standards. Comments and suggestions or methods acceptable to the AEC Regulatory staff of Imlemnenting specific parts of    Impyrovements in the"e guides ateo encouraged and should be sent to the Secretary the Commission'% regulations, to delineate techniqutus      .ved by the staff in    of the Commission. US. Atomic Energy Commission, Washington, D.C. 20545, evaluating specific problems or postulated accidents, ot to provide guidance to      Attention: Chief. Public Proceedings Statf.
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
    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.


apptlicants. flegulatory Guides are not iubstitutes for regulations and compliance with them is not required. Methods end solutions dilffeent from those setout in      The guide%Ire Issued In the following ten broad divisiont:
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,
    the *uidces  will be acceptable if they provide a bosh for the findings requisite to the Issuence or continuance of a permit or license by the Commission.                  1. Power Reactors                         
            07-13-81  for Section III, Division 1,                                      Class 2 and 3 Construction,
            07-13-84  Class 3 Construction                                              Section III, Division 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,
            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:
     toughness requirements apply only to piping sup-
                                                                  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
    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.


===6. Products===
1.85-4
                                                                                          2. Reseercts and Test Reactors;           


===7. Transportation===
(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-
                                                                                          3. Fuels end Materials Facilities         8. Occupational Health Published guides will be revised periodically, at appropriate, to accommodlate        4. Environmental and Siting                9. Antitrust Review commantsand to reflect new information or experlence.                                5. Materials aid Plant Protection        1
                    (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
                        12-05-84    Section III, Division 1, Class 1                      09-17-87
                        12-05-87                                            1412-4        11-03-75    Modified High Yield Strength I                                                                                      01-01-77    Steel for Section I1l, Division
                    (3) Code Case involving pipe and tubes:                                            1, Class 1 Vessels
         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-
                        02-14-83    Section III, Class 1 and 2                    tions specified in the Code Case: The informa-
                        02-20-86    Construction                                  tion required to be developed by Note 1 in the Code Case should be provided in each referenc-
                    (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.


===0. General===
05-19-85    V-Notch Specimens, Section I
                        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.


applications not precluded by regulatory or other                            (2) Code Cases involving pipe and tubes:
6          7 following by number, effective dates, and title.
    requirements or by the recommendations in this or other regulatory. guides. Contingent endorsement is indicated                1423-2      3/9/72      Wrought Type 304 and 316 with in Regulatory Position C.I.a for specific cases; however                                        Nitrogen Added, Sections 1,111, it is the responsibility of the user to make certain that                                      VIII, Divisions I and 2 no regulatory requirements are violated and that there
* are no conflicts with other recommended limitations                            This Code Case is acceptable subject to the resulting from Code Case usage.                                              conditions established in Regulatory Guides 1.31,
                                                                                "Control of' Stainless Steel Welding," and 1.44, The acceptance or endorsement by the Regulatory                          "Control of the Use of Sensitized Stainless Steel."
  staff applies only to those Code Cases or Code Cc".e revisions with the date of "Council Approval" as shown                1474-1      10/29/71    Integrally Finned Tubes for Sec- in the Regulatory Position of this guide. Earlier or later                                    tion III
    revisions of a Code Case are not endorscd by thi"s guide.              1484        8/4/7 1    SB-163 Nickel-Chromium-Iron New Code Cases as they are issued or future revisions of                                      Alloy Tubing at a Specified existing Code Cases will require evaluation by the                                              Minimum Yield Strength of Regulatory staff to determine if they qualify for                                              40,000 psi, Section III
    inclusion in the approved list. Because of the continuing              1527        6/6/72      Integrally Finned Tubes, Section change in the status of Code Cases, it is planned that tids                                    IlI
  guide will require periodic updating to accommodate                    1529        6/26/72    Materials .or Instrument Lind new Code Cases and any revisions of existing Code                                              Fittings, Sectw-n III
  Cases.                                                                 1578        6/25/72    SB-167 Nickel-Chromium Iron (Alloy 600) Pipe o; Tube, Sec- tion III


==C. REGULATORY POSITION==
1423-2        03-09-72    Wrought Type 304 and 316
1599      8/23/73      ASTM A-234-73 Fittings V.r use in Section 111, Classes 1, 2 and 3 I. The Section III ASME Code Cases 2 listed in the                                             Construction following by number, title, and date of Council approval are acceptable to the Regulatory staff for application in                    (3) Code Cases involving bars and forgings:
                                                                                          07-01-77    with Nitrogen Added, Sec-
   the construction of components for water-cooled nu- clear power plants. Their use is acceptable within the                  1332-6     3/9/72       Requirements for Steel Forgings, limitations stated in the "Inquiry" and "Reply" sections                                        Section III and VIII, Division 2.
. i    1141-1        08-31-61    Foreign Produced Steel                                              tions I, III, VIII, Division 1
                      07-23-76                                                                        and 2
        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
        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
                      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
                                                                                          07-01-82 perature, Section III
      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.
 
1.85-5
 
1515        03-09-72  Ultrasonic Examination of              15878        08-13-73    SA-508 Class 3 Forgings with
            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.
 
1.85-6
 
1648        08-12-74    SA-537 Plates for Section III,        1724      11-03-75  Deviation from the Specified
            07-01-76    Class 1, 2, 3, and MC Com-            (N-108)  07-01-78  Silicon Ranges in ASME
                        ponents                                                    Material Specifications, Sec-
16498        08-12-74    Modified SA 453-GR 660 for                                tion III, Division 1, and VIII,
            01-01-76    Class 1, 2, 3, and CS Con-                                Division 1 and 2 struction                              1728      11-03-75 Steel Structural Shapes and
1650        08-12-74    Use of SA-414 Grade C for                        07-01-77 Small Material Products for
            12-31-74    Class 2 and 3 Components,                                  Component Supports, Section Section III, Division 1                                    III, Division 1 Construction
1664        11-04-74    Use of Cr-Ni-Fe-Mo-Cu-Cb                1740    12-22-75 Weld Metal Test, Section III,
            03-21-77    Stabilized Alloy Cb-3 for                        07-01-76 Class 1, 2, 3, MC and CS
                        Section III Class 2 and 3              1741-1  01-14-77 Interim Rules for the Re- Construction                                    01-01-78 quired Number of Impact
1666        11-04-74    Use of SB-12, Alloy 122 for                                Tests for Rolled Shapes, Sec-
            07-01-75    Section III, Class 2 and 3                                tion III, Division 1, Subsec- Construction                                              tion NF, Component Supports
1682-1      08-11-75    Alternate Rules for Material            1742    03-01-76 Use of SB-75 Annealed
            12-31-75    Manufacturers and Suppliers,                    07-01-76 Copper Alloy 122, Section Section III, Subarticle NA-                                III, Division 1, Class 2
                        3700                                                      Construction
16848        03-03-75    A637 Grade 718 for Bolting              1743    03-01-76 Use of SB-98 Cu-SiB Rod
            01-01-76    Class 1 and 2 Construction                      07-01-76 CDA651 Section III, Division
16908        04-28-75    Stock Materials for Section                                1, Class 2 Components
            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
1691        04-28-75    Ultrasonic Examination in                                  1, 2, and 3 Construction
            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%
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
              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,
    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,
    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,
                                                                                    3, MC and CS Construction,
1713        08-11-75    Small Material Items, Section                              Section III, Division 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-
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
              06-30-84    Class MC                                1770    08-13-76 Testing of Electroslag Wire
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
                                                          1.85-7
 
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,
              07-16-82      Stress Rupture Tests, Section                          02-14-83  Division 1
                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
                                                                  1.85-8
 
Case is being applied and should. specify the re-              N-296        11-17-80  Welding Material, Section III,
      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
              06-30-86    Section III, Division 1 Con- struction                                N-317        07-13-81  ASTM A276 Bar Section III,
                                                                                  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
                                                                                  12-05-88  Grade TP 304, Section III,
      conditions specified in the Code Case. Paragraph Division 1, Class 1
      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
                                                                                  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.
 
09-07-85 Cap Screws, Section III,Divi- N-277          03-17-80    Use of Type XM-19 Austen-                                        sion 1
              09-17-80    itic Stainless Steel for Sec- Code Case N-348 was acceptable subject to the tion III, Division 1, Class MC
                                                                          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
              12-11-81    tion III, Division 1 why use of these socket head cap screws will not
              06-30-82 result in early failure from stress corrosion cracking.
 
'3Code Case N-265 was allowed to expire on 1-7-83 because of an administrative erro
 
====r. It was reinstated on====
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-
                  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.
 
10-28-861Sport Material, Section III,
                            Division 1, Class 1                    1395-3      11-06-72    SA-508, Class 2 Forgings with N-388          07-25-83 Component Support Bolting,
                                                                                01-08-79    Modified Manganese Con-
                07-30-86 Section      III,    Division      1, I                                                                                            tent, Section III or Section
                02-23-87 Classes 2, 3, and MC
                                                                                            VIII, Division 2 N-398          02-20-84 Reporting of Charpy-V Notch                1407-2      06-26-72    Time of Examination for Class
                02-20-87 Test Results, Section III,
                                                                                07-01-74    1, 2, and 3, Section III
                            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.
 
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-
                                  17 effective dates, 16 and title.                                        tions specified in the Code Case: The informa-
  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-
                  01-08-79  ings, Section III and VIII,
                            Division 2                                  ing Safety Analysis Report.
 
1335-9          04-29-74  Requirements      for Bolting
                  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
      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
                11-30-88  Iron Tubing (Alloy 600 and                    Grade 688 should be performed when the mate-
                            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
                                                                                    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-
149218          10-29-71  Post Weld Heat Treatment,                    tions specified in the Code Case: Welding of age-
                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-
1557-2          12-17-73    Steel Products Refined by                    rial is in the solution-treated condition. For
                01-08-79    Secondary Remelting                          SA-479 material, the maximum yield strength
1618            03-02-74    Material for Core Support                    should not exceed 90,000 psi in view of the sus-
                03-03-75    Structures--Section III, Sub-                ceptibility of this material to environmental section NG                                    cracking.
 
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,
      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.
 
should be performed when the material is in the solution-treated condition.
 
1644-1        04-28-75    Additional Materials for Com-
1618-2          03-01-76    Material for Core Support                              06-30-75    ponent Support-Section III,
(N-60)          01-08-79    Structures-Section III, Divi-                                      Subsection NF, Class 1, 2, 3,
                01-21-82    sion 1, Subsection NG                                              and MC Construction
                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.
 
Grade 688 should be performed when the mate- rial is in the solution-treated condition.
 
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,
                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-
    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
 
1644-3      11-03-75  Additional Materials for Com-              demonstrated by the applicant that (1) the im-
            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
                        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.
 
1644-6      03-03-77    Additional Materials for Com-
1644-4      03-01-76    Additional Materials for Com-                      11-21-77  ponent Supports and Alter-
            08-13-76    ponent Supports and Alter-                                    nate Design Requirements for nate Design Requirements for Bolted Joints, Section III, Di- Bolted Joints, Section III,
                                                                                        vision 1, Subsection NF, Class Division 1, Subsection NF,
                                                                                        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.
 
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,
1644-5        08-13-76    Additional Materials for Com-                                Division 1, Subsection NF,
              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.
 
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
                                                        1.85-12
 
(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
                                                                      170 Ksi in view of the susceptibility of high- strength materials to brittleness and stress corro-
    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,
                              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
                                                                                          1, 2, 3, and MC Component Supports
      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
                                                                      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
                    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====
                              1, 2, 3, and MC Component              sentence of paragraph 5.3, reference should Supports                              be made to paragraph 4.5.2.2, "Alternate
                                                            1.85-13
 
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
                                                                  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-
            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
    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-
                                                                  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-
                                                                  1/2 inch or less, 1 hour per inch for thickness graph 4.3 are not acceptable on a generic basis.
 
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.
 
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.
 
NF-4622 except that for ASTM A-710 Grade A
                                                                  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
     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.
 
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
                                                                          12-16-86  section NF, Classes 1, 2, 3 minutes for each additional inch over 5 inches.
 
and MC Component Supports Fabricated by Welding, Sec- N-71-13       02-20-84    Additional Materials for Sub- tion III, Division 1
              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,
  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,
  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.
 
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
    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,
    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
    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-
    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.


of each individual code case, such Regulatory or other                  1334-2     1/14/72    Requirements tor Corrosion- requirements as may exist, and the additional limitations                                        Resisting Steel Bars and Shapes.
1682        01-29-75  Alternate Rules for Material      N-246-1      09-07-82    SB-169, Alloy C 61400, Sec-
            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
                        3700                                            05-11-81    Component Supports Fabri-
1714        08-11-75 Postweld Heat Treatment of                                   cated Without Welding, Sec-
            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


recommended by the Regulatory. staff given with the                                             Section 111 individual code cases in the list. The categorization of                1337.7      8/13/73      Requirements for Special Type Code Cases is intended to facilitate the Code Case listing                                      403 Modified Forgings or Bars, and is not intended to indicate a limitation on its usag
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
            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)
    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
            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.


====e. Section III====
N-249-3      02-14-83 Additional Materials for Sub-
                                                                          1395-3      11/6/72    SA-508, Class 2 Forgings with 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, (
      a. Materials-Oriented Code Cases with Title and Date                                        Modified Manganese Content, of Council Approval:                                                                    Section III or Section VIII, Divi-
N-249-4      02-20-84 Additional Material for Sub-                                      Section III, Division 1
          (1) Code Cases involving plate:                                                          sion 2
            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)
                                                                          1498-1      11/6/72    SA-508--Class 2, Minimum Tem-
    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
    1141-1       8/31/61      Foreign Produced Steel                                              pering Temperature, Section III
                                                                  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.
    1401-1      3/9172        Welding Repairs to Cladding of              1542        Not dtd    Requirements for Type 403 Section III Components After                                       Modified Forgings or Bars for Final Post-Weld Heat Treatment                                     Bolting Material, Section III
    1492        10/29/71      Post-Weld Heat Treatment Sec-               1587-       8/13/73    SA-508--Class 3 Forgings with tions 1,111, and ViII, Division I                                  0.4/i.0 Ni for Section III and and 2                                                               VIII, Division 2 Construction
    1493-1      8/14/72      Post-Weld Heat Treatment, Sec.             1605        11/5/73    Cr-Ni-Mo-V Bolting Material for tion III                                                            Section 1II, Class 1 Components
    1571        3/3/73        Additional. Material for SA-234 Carbon Steel Fittings, Section                    (4) Code Cases involving general usage:
                              Ill
                                                                          1344-3      12/18/72    Requirements for Nickel-
  2


* A numerical listing of the Code Cases appears in the Appendixc.                               Chromium, Age-Hardenable Alloys, Section III
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
                                                                    1.85-2
              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.


1345-2      3/9/72      Requirements for Nickel.                        (2) Code Cases involving bars and forgings:
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
                        Molybdenum-Chromium-Iron Alloys, Section III                      1515         3/9172    Ultrasonic Examination of Ring
     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
1434-1     3/9/72      Post-Weld Heat Treatment of                                        Forgings for Shell Sections, Sec- SA-487 Class 8N Steel Castings,                                   tion III, Class I Vessels Section III, Classes I and 2
                                                        1.85-16
1521        5/1/72     Use of H-Grades of SA-240,             .2. Code Cases that are annulled by action of the ASME
                        SA-479, SA-336, and SA-358,              Council should be considered as deleted from the Section III                              approved list as of the date of the ASME Council action.


This Code Case is acceptable subject to the                                  
conditions specified in the Code Case: The frac-            N-379      04-04-83    Bimetallic Tubing Section III,
      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
      1, 2, and 3 component supports should be char-                                      N08028 and UNS N08904)
      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
      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)
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.


===0. IMPLEMENTATION===
05-19-85 N-299          11-17-80    Use of Nickel-Chromium-                      5. Code Cases for other classes of components
      conditions established in Regulatory Guides 1.31,
               11-28-83    Molybdenum-Columbium Al-             that are not on the approved list of this guide
      "Control of Stainless Steel Welding," and 1.44,               The following guidance is provided for the implemen-
              07-18-85    loy 625 Forgings, Section III,        (paragraph C. 1) or other regulatory guides should be considered not acceptable on a generic basis.
      "Control of the Use ot'Sensitized Stainless Steel."        tation of Section III ASME Code Cases involving materials and testing.


1531        8/14/72     Electrical Penetrations, Special Alloys For Electrical Penetration        1. The effective date of this guide is July 1, 1974.
Division 1, Class 2 and Class 3 Components N-321          07-13-81     Use of Modified SA-249,  


Seals, Section 111
==D. IMPLEMENTATION==
1532        8/14/72     Section IIl, Class 3 Components          2. This listing of Code Cases is applicable after the Made of 8 Percent and 9 Percent         effective date of this guide unless a particular Code Case Nickel Steel                            has been annulled by action of the ASME Council.
07-13-84    Type 304 for Section III,
              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.


1557-2       12/17/73  Steel Products Refined by Secondary Melting                        3. Components ordered to a specific version of a Code
05-19-85    II, Type II, Sintered Austen-
1567        3/3/73      Testing Lots of Carbon and Low          Case before the effective date of this guide need not be Alloy Steel Covered Electrodes,         changed because a subsequent revision to the Code Case Section III                             is listed as the approved version in this guide.
              07-18-85    itic Stainless Steel for Class 2,          1. Except for those Code Cases that have been
                            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
              05-19-85    Forgings and Bars Below              considered for use in accordance with footnote 6 of
              07-18-85    700°F Without Stress Rupture          the Codes and Standards rule, §50.55a of 10ýCFR
                            Tests, Section III, Division 1        Part 50.


1568        -3/3/73     Testing Lots of Flux Cored mnd          4. Code Cases on the approved list may be applied to Fabricated Carbon and Low               components that were in process of construction prior Alloy Steel Welding Electrodes.         to the effective date of this guide within the limits Section Ill                              specified in the Code Case and applicable regulations or
N-370          02-14-83    Modified      SA-705      Grade
1583       6/25/73     Use of 80-40 Carbon Steel Cast-          recommended in other regulatory guides.
              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.


ings
Division 1
1590        8/13/73    Chemical Analysis Variaitiks.            5. Code Cases for Class I components which are not on Section III Construction                the approved list of this guide or other regulatory guides, or for which authorization by the Commission has not b. Testing-Oriented Code Cases wi'!i Title and Date          been granted, are not acceptable on a generic basis for of Council Approval:                                      Class I components. Special autho'ization may be (I) Code Cases involving plates:                          granted for individual cases upon special request to the Commission.
                                                                      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
              07-18-85    sitic Stainless Steel Valve In- because the Code Case has been subsequently ternals, Section III, Division 1
    0                                                            annulled.


1407-2      6/26/72    Time of Examination for Classes
' 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.
                        1, 2. and 3 Section Ill Vessels        6. Code Cases for other Classes of components which
1456-2     6/25/73    Substitution of Ultrasonic Ex-           are not on the approved list of this guide or other amination for Progressive Pene.          regulatory guides, or for which authorization by the trant or Magnetic Particle              Commission has not been granted, should not be Examinations of Partial Penetra-         considered acceptable on a generic basis. Special authori- tion and Oblique Nozzle Attach-         zation may be granted for individual cases upon special ment Welds, Section III                  request to the Commission.


1.85-3
1.85-17


APPENDIX
APPENDIX
      Numerical Listing of Code Cases
                    NUMERICAL LISTING OF CODE CASES*
1141-1                                1515
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
1332-6                                1521
N-60-3 N-337-1                                        N-441 N-71-15 N-348-1                                        N-443-1 N-127 (1755-1)
1334-2                                 1527
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
1337-7                                 1529
  *Code Case 1624 was inadvertently listed in the appendix of Regulatory Guide 1.85, Revision 1.
1344-3                                 1531
 
1345-?                                1532
1.85-18
1395-3                                 1542
 
1401-1                                 1557-2
THIS DOCUMENT WAS PRINTED USING RECYCLED PAPER.
1407-2                                1567
 
1423-2                                1568
UNITED STATES                                                FIRST CLASS MAIL
1434-1                                 1571
                                                                                  FEES PAID
1456-2                                1578
'NUCLEAR REGULATORY COMMISSION                                        POSTAGE &
1474-1                                1583
                                                                              USNRC
1484                                  1587
      WASHINGTON, D.C. 20555 PERMIT No. G-67 OFFICIAL BUSINESS
1492                                  1590
      PENALTY FOR PRIVATE USE, $300
1493-1                                 1599
                                    12055;5;003954    1 lopilIS
1498-1                                1605
                                    US~cN~- aIR m
                                              0
                                        6VOF INFO SUP SVsCS
                  1.85-4}}
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                                    15I-0
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Revision as of 14:50, 10 March 2020

7, Materials Code Case Acceptability ASME Section III Division 1
ML13038A104
Person / Time
Issue date: 11/30/1990
From:
Office of Nuclear Regulatory Research
To:
References
RG-1.085, Rev. 27
Download: ML13038A104 (20)
v • d • e


U.S. NUCLEAR REGULATORY COMMISSION Revision 27 November 1990

REGULATORY GUIDE

OFFICE OF NUCLEAR REGULATORY RESEARCH

REGULATORY GUIDE 1.B5 MATERIALS CODE CASE ACCEPTABILITY

ASME SECTION III DIVISION I

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.

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.

of the American Society of Mechanical Engineers Appendix B, "Quality Assurance Criteria for Nu- (ASME) Boiler and Pressure Vessel Code or equiva- clear Power Plants and Fuel Reprocessing Plants," to lent quality standards. Footnote 6 to §50.55a states

10 CFR Part 50 requires, in part, that measures be that the use of specific Code Cases may be authorized established for the control of special processing of by the Commission upon request pursuant to materials and that proper testing be performed.

§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

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.

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.

standards are used, Criterion 1 requires that they b e identified and evaluated to determine their applicabi I-

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."'

'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.

guides are encouraged at all times, and guides will be revised, as ap- Government Printing Office, Post Office Box 37082, WashIngton, UC

propriate, to accommodate comments and to reflect new Information or 20013-7082, telephone (202)275-2060 or (202)275-2171.

experience.

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.

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.

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

C. REGULATORY POSITION

Code, and therefore continued use of the Code Case

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

"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.

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

  • 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.

basis to attain endorsement status.

(2) Code Cases involving pipe and tubes:

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

  • Lines indicate substantive changes from Revision 26. on which the Code Case was reaffirmed by the ASME.

1.85-2

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,

01-21-82 07-13-84 Division 1, Class 1 and CS

01-21-85 07-13-87

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-

07-13-81 Cu (Alloy 825) and Ni-Cr- sion 1

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

-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

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

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

(3) Codes Cases involving bars and material has essentially no residual stresses or assembly stresses, and it does not experience fre- forgings:

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-

4 Corrected date. phere Exposure Time Periods Established by

1.85-3

Test," of the AWS D. 1.1 Code for the evidence USNRC Standard Review Plan (NUREG-0800)

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

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.

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,

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 thickness 05-19-88 Section III, Division 1, Class 1 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 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,

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

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

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

12-11-81 Relief Valves, Section III, 7°,-

\.

result in early failure from stress corrosion

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

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

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.

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,

07-13-81 for Section III, Division 1, Class 2 and 3 Construction,

07-13-84 Class 3 Construction Section III, Division 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,

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:

toughness requirements apply only to piping sup-

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

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.

1.85-4

(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-

(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

12-05-84 Section III, Division 1, Class 1 09-17-87

12-05-87 1412-4 11-03-75 Modified High Yield Strength I 01-01-77 Steel for Section I1l, Division

(3) Code Case involving pipe and tubes: 1, Class 1 Vessels

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-

02-14-83 Section III, Class 1 and 2 tions specified in the Code Case: The informa-

02-20-86 Construction tion required to be developed by Note 1 in the Code Case should be provided in each referenc-

(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.

05-19-85 V-Notch Specimens,Section I

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.

1423-2 03-09-72 Wrought Type 304 and 316

07-01-77 with Nitrogen Added, Sec-

. i 1141-1 08-31-61 Foreign Produced Steel tions I, III, VIII, Division 1

07-23-76 and 2

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

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

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

07-01-82 perature,Section III

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.

1.85-5

1515 03-09-72 Ultrasonic Examination of 15878 08-13-73 SA-508 Class 3 Forgings with

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.

1.85-6

1648 08-12-74 SA-537 Plates for Section III, 1724 11-03-75 Deviation from the Specified

07-01-76 Class 1, 2, 3, and MC Com- (N-108) 07-01-78 Silicon Ranges in ASME

ponents Material Specifications, Sec- 16498 08-12-74 Modified SA 453-GR 660 for tion III, Division 1, and VIII,

01-01-76 Class 1, 2, 3, and CS Con- Division 1 and 2 struction 1728 11-03-75 Steel Structural Shapes and

1650 08-12-74 Use of SA-414 Grade C for 07-01-77 Small Material Products for

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

1664 11-04-74 Use of Cr-Ni-Fe-Mo-Cu-Cb 1740 12-22-75 Weld Metal Test,Section III,

03-21-77 Stabilized Alloy Cb-3 for 07-01-76 Class 1, 2, 3, MC and CS

Section III Class 2 and 3 1741-1 01-14-77 Interim Rules for the Re- Construction 01-01-78 quired Number of Impact

1666 11-04-74 Use of SB-12, Alloy 122 for Tests for Rolled Shapes, Sec-

07-01-75 Section III, Class 2 and 3 tion III, Division 1, Subsec- Construction tion NF, Component Supports

1682-1 08-11-75 Alternate Rules for Material 1742 03-01-76 Use of SB-75 Annealed

12-31-75 Manufacturers and Suppliers, 07-01-76 Copper Alloy 122, Section Section III, Subarticle NA- III, Division 1, Class 2

3700 Construction

16848 03-03-75 A637 Grade 718 for Bolting 1743 03-01-76 Use of SB-98 Cu-SiB Rod

01-01-76 Class 1 and 2 Construction 07-01-76 CDA651 Section III, Division

16908 04-28-75 Stock Materials for Section 1, Class 2 Components

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

1691 04-28-75 Ultrasonic Examination in 1, 2, and 3 Construction

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%

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

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,

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,

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,

3, MC and CS Construction,

1713 08-11-75 Small Material Items, Section Section III, Division 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-

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

06-30-84 Class MC 1770 08-13-76 Testing of Electroslag Wire

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

1.85-7

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,

07-16-82 Stress Rupture Tests, Section 02-14-83 Division 1

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

1.85-8

Case is being applied and should. specify the re- N-296 11-17-80 Welding Material,Section III,

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

06-30-86 Section III, Division 1 Con- struction N-317 07-13-81 ASTM A276 Bar Section III,

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

12-05-88 Grade TP 304,Section III,

conditions specified in the Code Case. Paragraph Division 1, Class 1

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

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.

09-07-85 Cap Screws,Section III,Divi- N-277 03-17-80 Use of Type XM-19 Austen- sion 1

09-17-80 itic Stainless Steel for Sec- Code Case N-348 was acceptable subject to the tion III, Division 1, Class MC

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

12-11-81 tion III, Division 1 why use of these socket head cap screws will not

06-30-82 result in early failure from stress corrosion cracking.

'3Code Case N-265 was allowed to expire on 1-7-83 because of an administrative erro

r. It was reinstated on

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-

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.

10-28-861Sport Material,Section III,

Division 1, Class 1 1395-3 11-06-72 SA-508, Class 2 Forgings with N-388 07-25-83 Component Support Bolting,

01-08-79 Modified Manganese Con-

07-30-86 Section III, Division 1, I tent,Section III or Section

02-23-87 Classes 2, 3, and MC

VIII, Division 2 N-398 02-20-84 Reporting of Charpy-V Notch 1407-2 06-26-72 Time of Examination for Class

02-20-87 Test Results,Section III,

07-01-74 1, 2, and 3,Section III

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.

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-

17 effective dates, 16 and title. tions specified in the Code Case: The informa-

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-

01-08-79 ings,Section III and VIII,

Division 2 ing Safety Analysis Report.

1335-9 04-29-74 Requirements for Bolting

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

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

11-30-88 Iron Tubing (Alloy 600 and Grade 688 should be performed when the mate-

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

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-

149218 10-29-71 Post Weld Heat Treatment, tions specified in the Code Case: Welding of age-

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-

1557-2 12-17-73 Steel Products Refined by rial is in the solution-treated condition. For

01-08-79 Secondary Remelting SA-479 material, the maximum yield strength

1618 03-02-74 Material for Core Support should not exceed 90,000 psi in view of the sus-

03-03-75 Structures--Section III, Sub- ceptibility of this material to environmental section NG cracking.

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,

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 StructuresSection 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.

should be performed when the material is in the solution-treated condition.

1644-1 04-28-75 Additional Materials for Com-

1618-2 03-01-76 Material for Core Support 06-30-75 ponent Support-Section III,

(N-60) 01-08-79 Structures-Section III, Divi- Subsection NF, Class 1, 2, 3,

01-21-82 sion 1, Subsection NG and MC Construction

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.

Grade 688 should be performed when the mate- rial is in the solution-treated condition.

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,

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-

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

1644-3 11-03-75 Additional Materials for Com- demonstrated by the applicant that (1) the im-

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

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.

1644-6 03-03-77 Additional Materials for Com-

1644-4 03-01-76 Additional Materials for Com- 11-21-77 ponent Supports and Alter-

08-13-76 ponent Supports and Alter- nate Design Requirements for nate Design Requirements for Bolted Joints,Section III, Di- Bolted Joints,Section III,

vision 1, Subsection NF, Class Division 1, Subsection NF,

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.

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,

1644-5 08-13-76 Additional Materials for Com- Division 1, Subsection NF,

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.

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

1.85-12

(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

170 Ksi in view of the susceptibility of high- strength materials to brittleness and stress corro-

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,

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

1, 2, 3, and MC Component Supports

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

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

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

1, 2, 3, and MC Component sentence of paragraph 5.3, reference should Supports be made to paragraph 4.5.2.2, "Alternate

1.85-13

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

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-

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

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-

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-

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 thickness graph 4.3 are not acceptable on a generic basis.

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 Paragraph 16.2.2 is not acceptable as written and minutes for each additional inch over 5 inches.

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.

NF-4622 except that for ASTM A-710 Grade A

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

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.

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 thickness N-71-14 12-05-85 Additional Materials for Sub- 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

12-16-86 section NF, Classes 1, 2, 3 minutes for each additional inch over 5 inches.

and MC Component Supports Fabricated by Welding, Sec- N-71-13 02-20-84 Additional Materials for Sub- tion III, Division 1

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,

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,

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.

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

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,

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

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-

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 thickness ments for Section III, Class 2 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 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-

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

3700 05-11-81 Component Supports Fabri-

1714 08-11-75 Postweld Heat Treatment of cated Without Welding, Sec-

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

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)

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

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.

N-249-3 02-14-83 Additional Materials for Sub-

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 SupportsSection 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

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.

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

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

1.85-16

conditions specified in the Code Case: The frac- N-379 04-04-83 Bimetallic Tubing Section III,

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

1, 2, and 3 component supports should be char- N08028 and UNS N08904)

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

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)

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

11-28-83 Molybdenum-Columbium Al- that are not on the approved list of this guide

07-18-85 loy 625 Forgings,Section III, (paragraph C. 1) or other regulatory guides should be considered not acceptable on a generic basis.

Division 1, Class 2 and Class 3 Components N-321 07-13-81 Use of Modified SA-249,

D. IMPLEMENTATION

07-13-84 Type 304 for Section III,

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.

05-19-85 II, Type II, Sintered Austen-

07-18-85 itic Stainless Steel for Class 2, 1. Except for those Code Cases that have been

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

05-19-85 Forgings and Bars Below considered for use in accordance with footnote 6 of

07-18-85 700°F Without Stress Rupture the Codes and Standards rule, §50.55a of 10ýCFR

Tests,Section III, Division 1 Part 50.

N-370 02-14-83 Modified SA-705 Grade

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

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

07-18-85 sitic Stainless Steel Valve In- because the Code Case has been subsequently ternals,Section III, Division 1

0 annulled.

' 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.

1.85-17

APPENDIX

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-60-3 N-337-1 N-441 N-71-15 N-348-1 N-443-1 N-127 (1755-1)

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

1.85-18

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