Regulatory Guide 1.84: Difference between revisions

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{{Adams
{{Adams
| number = ML13038A091
| number = ML13350A351
| issue date = 04/30/1992
| issue date = 06/30/1974
| title = 8, Design and Fabrication Code Case Acceptability ASME Section III Division 1
| title = Code Case Acceptability ASME Section III Design and Fabrication
| author name =  
| author name =  
| author affiliation = NRC/RES
| author affiliation = US Atomic Energy Commission (AEC)
| addressee name =  
| addressee name =  
| addressee affiliation =  
| addressee affiliation =  
Line 10: Line 10:
| license number =  
| license number =  
| contact person =  
| contact person =  
| document report number = RG-1.084, Rev. 28
| document report number = RG-1.084
| document type = Regulatory Guide
| document type = Regulatory Guide
| page count = 18
| page count = 5
}}
}}
{{#Wiki_filter:U.S. NUCLEAR REGULATORY COMMISSION                                                               Revision 28 April 1992 REGULATORY GUIDE
{{#Wiki_filter:June 1974 U.S. ATOMIC ENERGY COMMISSION
                                OFFICE OF NUCLEAR REGULATORY RESEARCH
0                                  REGULATORY
                                                            REGULATORY GUIDE 1.84 DESIGN AND FABRICATION CODE CASE ACCEPTABILITY
                                  DIRECTORATE OF REGULATORY STANDARDS
                                                        ASME SECTION III DIVISION 1
                                                                                                                                  GUIDE
                                                                    REGULATORY GUIDE 1.84 CODE CASE ACCEPTABILITY
                                                                ASME SECTION III DESIGN
                                                                      AND FABRICATION


==A. INTRODUCTION==
==A. INTRODUCTION==
or modified as necessary to ensure a quality product in keeping with the required safety function.
tested to the highest quality standards practical. Ap- pendix B, "Quality Assurance Criteria for Nuclear Power Section 50.55a, "Codes and Standards," of 10 CFR                                  Plants and Fuel Reprocessing Plants," to 10 CFR Part 50.


Section 50.55a, "Codes and Standards," of
Part 50, "Ucensing of Production and Utilization                                       requires, in part, that measures be established for the Facilities," requires, in part, that components of the                                 control of special processing of materials and that proper reactor coolant pressure boundary be designed, fabri-                                  testing be performed. This regulatory guide lists those cated, erected, and tested in accordance with the                                     Section III ASME Code Cases oriented to design and requirements for Class I components of Section III,                                   fabrication 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," 1                          practical.
  "Nuclear Power Plant Components,"i of the American                                    Regulatory staff for implementation in the licensing of Society of Mechanical Engineeri (ASME) Boiler and                                      light-water-cooled nuclear power plants.


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.
Pressure Vessel Code or equivalent quality standards.


§50.55a(a) (2) (ii), which requires that proposed alter- natives to the described requirements or portions                                  This regulatory guide lists those Section III
Footnote 6 to Section 50.55a states that the use of                                                                
thereof provide an acceptable level of quality and                          ASME Code Cases oriented to design and fabrication safety.                                                                      that are generally acceptable to the NRC staff for im- plementation in the licensing of light-water-cooled nu- General Design Criterion 1, "Quality Standards                        clear power plants.
 
and Records," of Appendix A, "General Design Cri- teria for Nuclear Power Plants," to 10 CFR Part 50                                  Any information collection activities mentioned requires, in part, that structures, systems, and compo-                      in this regulatory guide are contained as requirements nents important to safety be designed, fabricated,                          in 10 CFR Part 50, which provides the regulatory ba- erected, and tested to quality standards commensu-                          sis for this guide. The information collection require- rate with the importance of the safety function to be                        ments in 10 CFR Part 50 have been cleared under performed. Where generally recognized codes and                              OMB Clearance No. 3150-0011.
 
standards are used, Criterion 1 requires that they be                                               


==B. DISCUSSION==
==B. DISCUSSION==
identified and evaluated to determine their applicabil- ity, adequacy, and sufficiency and be supplemented                                The ASME Boiler and Pressure Vessel Commit- tee publishes a document entitled "Code Cases." 1 Generally, the individual Code Cases that make up this document explain the intent of Code rules or pro-
specific Code Cases may be authorized by the Commis- sion upon request pursuant to §50.55a(a)(2Xii) which                                        The Boiler and Pressure Vessel Committee of the requires that proposed alternatives to the described                                  ASME publishes documents entitled "Interpretations of requirements or portions thereof provide an acceptable                                the ASME Boiler and Pressure Vessel Code." t These level of quality and safety. General De--ign Criterion 1,                             documents, referred to as "Code Cases," explain the
    'Copies may be obtained from the American Society of Me- chanical Engineers, United Engineering Center, 345 East 47th                vide for alternative requirements under special cir- Street, New York, New York 10017.                                          cumstances.
  "Quality Standards and Records," of Appendix A,                                        intent of Code rules or provide Code permission to use
  "General Design Criteria for Nuclear Power Plants," to                                alternative requirements under special circumstances or
    10 CFR Part 50 requires, in part, that structures,                                    with suitable precautions. Most Code Cases are even- systems, and components important to safety be de-                                     tually superseded by revision to the Code and then are signed, fabricated, erected, and tested to quality stand-                              annulled by action of the ASME Council.


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


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.
* they be identified and evaluated to determine their                                  toward design and fabrication.


guides are encouraged at all times, and guides will be revised, as ap-      Government Printing Office, Post Office Box 37082, Washington, DC
applicability, adequacy, and sufficiency and be supple- mented or modified as necessary to assure a quality                                        All published Code Cases in the area of design and product in keeping with the required safety function.                                fabrication which are applicable .to Section III of the C*.terion 30, "Quality of Reactor Coolant Pressure                                    Code and were in effect on November 5, 1973 were Boundary," of the same appendix requires, in part, that                              reviewed for inclusion in this guide. Code Cases which components which are part of the reactor coolant                                      are not listed herein are either not endorsed or will pressure boundary be designed, fabricated, erected, and                               require supplementary provisions on an individual basis to attain endorsement status.
  propriate, to accommodate comments and to reflect new information or      20013-7082, telephone (202)275-:2060 or (202)275-2171.


experience.
ICopies may be obtained from the American Society of Mechanical Engineers, United Enginecering Center, 345 East                              The endorsement of a Code Case by this guide
      47th Street, New York, N.Y. 10017.                                                  constitutes acceptance of its technical position for USAEC REGULATORY GUIDES                                      Copies of published guides may be obtained by request indicating the divisions desired to the US. Atomic Energy Commission, Washington. D.C, 20545.


Written comments may be submitted to the Regulatory Publications          Issued guides may also be purchased from the National Technical Infor- Branch, DFIPS, ADM, U.S. Nuclear Regulatory Commission, Washing-          mation Service on a standing order basis. Details on this service may be ton, DC 20555,                                                             obtained by writing NTIS, 5285 Port Royal Road, Springfield, VA 22161.
Regulatotyý Guides are issued to desoibe and make avoilable to the public          Attention: Director of Regulatory Standards. Comments and suggestions for methods accptable to the AEC Regulatory stoff of Implementing specific pents of    improvements In these guides are encouraged and should be sent to the Secretary the Commissioe's regulations, to delineate techniques v,,edby the staff in          of the Commission, US. Atomic Energy Commission, Wtshington, D.C. 20545, evaluating specific prob;ems or postulated accidents, or to provide guidsnce to    Attention: Chief. Public Proceedings Staff.


Most Code Cases are eventually superseded by              to accommodate new Code Cases and any revisions revision to the Code and then are annulled by action            of existing Code Cases.
apolicants. Regulatoty Guides are not substitutes for regulations and compliance with them is not required. Methods end solutions different from those set out in    The guides are issued in th" following ten broad divisions:
    the guides will be acceptable If they provide a basis for the findings requisite to the issuance or continuance of a permit or license by the Commission,                  1. Power Reachors                         


of the ASME. In such cases, the intent of the annulled Code Case becomes part of the revised                               
===6. Products===
                                                                                          2.  Research end Test Resictoct           


==C. REGULATORY POSITION==
===7. Transportation===
Code, and therefore continued use of the Code Case intent is sanctioned under the rules of the Code. In                    1. The Section III ASME Code Cases 2 listed other cases, the Code Case is annulled because it is            below (by number, date of ASME approval, and no longer acceptable or there is no further                      title) are acceptable to the NRC staff for application requirement for it. A Code Case that was approved               in the construction of components for light- for a particular situation and not for a generic                water-cooled nuclear power plants. Their use is application should be used only for construction of              acceptable within the limitations stated in the the approved situation because annulment of such a              "Inquiry" and "Reply" sections of each individual Code Case could result in construction that would not            Code Case, within the limitations of such NRC or meet Code requirements.                                         other requirements as may exist, and within the The Code Cases listed in this guide are limited to         additional limitations recommended by the NRC staff given with the individual Code Case in the listing.
                                                                                          3.  Fuets and Materials Fecilities          8. Occupational Health Published guides will be revised periodically, asappropriate, to accommodate          4. Environmental and Siting               9. Antitrust Review comments and to reflect new Information or experience,                               S. Materials and Plant Protection         10, General


those cases applicable to Section III that are oriented toward design and fabrication.                                   The categorization of Code Cases used in this guide is intended to facilitate the Code Case listing and is not All published Code Cases in the area of design            intended to indicate a limitation on its usage.
applications not precluded by regulatory or other                            (2) Code Cases Applicable to Valve Design requirements or by the recommendations in this or other regulatory guides. Contingent endorsement is indicated                  1533        6-14-72    Pressure Temperature Ratings of in Regulatory Position C.l.c for specific cases; however                                      SA-35 1 Grades CF8A, CF3, and
* it is the responsibility of the user to make certain that                                      CF3M, Section III
  no regulatory requirements are violated and that there                  1534        11.6-72    Overpressurization of Valves, are no conflicts with other recommended limitations                                            Section III
  resulting from Code Case usage.                                        1539        11-6-72    Metal Bellows and Metal Dia- phragm Stem Sealed Valves, Sec- The acceptance or endorsement by the Regulatory                                            tion II, Classes 1, 2, and 3.


and fabrication that are applicable to Section III of                    a. Design-oriented Code Cases (Code Case the Code and were in effect on April 30, 1990, were reviewed for inclusion in this guide. In addition to the       number, date of ASME approval,3 and title):
staff applies only to those Code Cases or Code Case                     1540-1      3-3-73    Elastomer Diaphragm Valves Sec- revisions with the date of "Council Approval" as shown                                        tion i11, Classes 2 and 3 in the Regulatory Position of this guide. Earlier or later              1552       12-18-72  Design by Analysis of Section III
listing of acceptable Code Cases, this revision of the guide includes listings of (1) Code Cases that were                          (1) Code Cases applicable to piping design:
  revisions of a Code Case are not endorsed by this guide.                                      Class I Valves New Code Cases as they are issued or future revisions of               1555        12-18-72  Certification of Safety Relief existing Code Cases will require evaluation by the                                            Valves on Liquids Regulatory staff to determine if they qualify for                       1573      4-30-73     Vacuum Relief Valves, Section inclusion in the approved list. Because of the continuing                                      Ill change in the status of Code Cases, it is planned that this             1574        4-30-73    Hydrostatic Test Pressure for guide will require periodic updating to accommodate                                            Safety Relief Valves, Section III,
identified as acceptable in a prior version of this            N-160-1          07-18-85    Finned Tubing for Construc- regulatory guide and that were annulled after the                                07-18-88     tion, Section III, Division 1 original issuance of this guide (June 1974) and
  new Code Cases and any revisions of existing Code                                             Classes 1, 2, and 3 Cases.                                                                 1581        6-25.73    Power-Operated Pressure Relief Valves Section 11I,Class I
(2) Code Cases that were identified as acceptable in             N-453-1        11-30-88    Nickel-Chromium-Molybde- num-Copper Stainless Steel a prior version of this regulatory guide and that were superseded by revised Code Cases after the original                                            (UNS N08925) Seamless and issuance of this guide (June 1974). Code Cases that                                          Welded Pipe for Class 2 and 3 are not listed herein are either not endorsed or will                                        Construction Section III, Divi- require supplementary provisions on an individual                                            sion 1 basis to attain endorsement status.                              N-454          12-07-87    Nickel-Chromium-Molybde- num-Copper Stainless Steel The endorsement of a Code Case by this guide constitutes acceptance of its technical position for                                          (UNS    N08925)      Wrought Fittings for Class 2 and 3 applications not precluded by regulatory or other Construction Section III, Divi- requirements or by the recommendations in this or sion 1 other regulatory guides. Contingent endorsement is N-455          12-07-87    Nickel-Chromium-Molybde- indicated in regulatory position C.1.c for specific num-Copper Stainless Steel cases. However, it is the responsibility of the user to (UNS      N08925)        Forged make certain that no regulatory requirements are Flanges and Fittings for Class violated and that there are no conflicts with other
                                                                                              2 and 3 Construction Section recommended limitations resulting from Code Case III, Division 1 usage.


Acceptance or endorsement by the NRC staff                              (2) Code Cases applicable to valve design:
==C. REGULATORY POSITION==
applies only to those Code Cases or Code Case N-133-3         07-18-85      Use of SB-148 Alloys 952 and revisions with the date of ASME approval as shown                                07-18-88      954 Section III, Division 1, in the regulatory position of this guide. Earlier or Class 3 later revisions of a Code Case are not endorsed by this guide. New Code Cases will require evaluation by            N-313          05-11-81 Alternate Rules for Half- the NRC staff to determine if they qualify for                                  11-28-83. Coupling Branch            Connec- inclusion in the approved list. Because of the                                  11-28-86 tions, Section III, Division 1
(3) Other Code Cases Related to Design
                                                                      2 continuing change in the status of Code Cases, it is                  A numerical listing of the Code Cases appears in the ap- pendix.
                                                                          1470-2      12-18-72  External Pressure Charts for
  1. The Section III ASME Code Cases 2 listed in the                                            High-Strength Carbon Steels and following by number, title, and date of Council approval                                      for Low-Alloy Steels are a:ceptable to the Regulatory staff for application in              1508         12-13-71  Allowable Stresses, Design Stress the construction of components for water-cooled nu-                                            Intensity, and/or Yield Strength clear power plants. Their use is acceptable within the                                          Values of Section 1, II, and VIII,
  limitations stated in the "Inquiry" and "Reply" sections                                        Division I and 2 of each individual code case, such Regulatory or other                1536        8-14-72    Closing Seam for Electrical Pene- requirements as may exist, and the additional limitations                                      tration for Section III, Classes 2, recommended by the Regulatory, staff given with the                                            3, and MC
  individual code cases in the list.                                    1575        4-30-73    Hub-to-Flange Fillet Radius for Bolted Flanges with Nut Stop a. Design-Oriented Code Cases With Title and Date of               1607        11-5-73    Stress Criteria for Section III,
        Council Approval                                                                        C(lasses 2 and 3 Vessels Subjected
        (1) .Code Cases Applicable to Piping Design                                              to Upset, Emergency, and Faulted Operating Conditions
  1477-1        3-9-72        Use of 1970 Addenda of ANSI
                              B31.7 "Nuclear Power Piping"                  b. Fabrication-Oriented. Code Cases with Dates of
  1506          12-13-71      Stress Intensification Factors,                    Council Approval Section I11,Class 2 & 3 Piping                    (1) Code Cases Related to Welding
  1601          11-5-73        Limits of Reinforcement for Two-thirds Area, Section III                1461        3-9-72      Electron Beam Welding, Sections Class 1                                                            1,111, VIII
  1606          11-5-73        Stress Criteria for Section III            1471-1      3.9-72      Vacuum Electron Beam Welding Classes 2 and 3 Piping Subjected                                   of Tube Sheet Joints to    Upset,    Emergency,    and        1494-1      3-3-73      Weld Procedure Qualification Faulted Conditions                                                Tests, Section III
  1614          11-5-73        Hydrostatic Testing of Piping              1516-1      6-25-73    Welding of Seats in Valves for Prior to or Following the Instal-                                  Section III Applications lation of Spray Nozzles for Sec-            1554      3-3-73      Post-weld Heat Treatment of tion I11, Classes 1, 2, and 3                                      P-number 1 and P-number 12A,
                              Piping Systems                                                    Subgroup 1 Longitudinal Welds, Section III Classes 1, 2, and 3
  2These  Code Cases are listed numerically in the Appendix to this                              components guide.                                                                1580.1      11-5-73    Figure NB4233-1(a), Section III
                                                                  1.84-2


planned that this guide will require periodic updating              3 When more than one date is given, the earlier date is that on which the Code Case was approved by the ASME and the later date(s) is that on which the Code Case was reaffirmed by
(2) Other Code Cases Related to Fabrication                                   
    *Lines indicate substantive changes from Revision 27.        the ASME.


1.84-2
==D. IMPLEMENTATION==
1535-2        4-30-73    Hydrostatic Testing of Section              The following guidance is provided for the implemen-
                          111 Class I valves                      tation of Section III ASME Code Cases involving
1541-1       8-13.73    Hydrostatic Testing of Embed-           materials and testing.


N-394        02-20-84  Restricting Lift to Achieve                consistently, if used at all. (For equipment other
ded Class 2 and Class 3 Piping for Section III construction                 1. The effective date of this guide is July 1, 1974.
            07-30-86  Reduced Relieving Capacities                than piping, the damping values specified in
            07-30-89  of Full Lift, Nozzle Type, and              Regulatory Guide 1.61, "Damping Values for Flat Seated Safety and Safety              Seismic Design of Nuclear Power Plants," should Relief Valves for Compress-                be used.) (2) The damping values specified may ible Fluid Applications, Sec-              be used only in those analyses in which current tion III, Division 1, Classes 2            seismic spectra and procedures have been em- and 3                                       ployed. Such use should be limited only to re- N-410        12-05-84 Certified Relieving Capacities              sponse spectral analyses. (similar to that used in
              07-27-88 of Pressure Relief Valves                    the study supporting its acceptance-Reference Having Set Pressure of 3 psig              NUREG/CR-3526). The acceptance of the use up to but Not Including 15                  with other types of dynamic analyses (e.g., time- psig Installed for Overpressure            history analysis or independent support motion Protection of Compressible                  method) is pending further justification. (3)
                        Fluid Systems, Section III,                When used for reconciliation work or for support Division 1, Classes 2 and 3                optimization of existing designs, the effects of in- N-442        02-23-87 1977 Addendum to ANSI/                      creased motion on existing clearances and on
              04-30-90 ASME          PTC    25.3-1976,            line mounted equipment should be checked. (4)
                        Safety and Safety Relief                  This Code Case is not appropriate for analyzing Valves, Class 1, 2, 3, and                 the dynamic response of piping systems using MC, Section III, Division 1                 supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420). (5) This Code Case is not applica-
          (3)  Other Code Cases related to design:                ble to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is N-119-6      09-05-85  Pump Internal Items, Section                made and is reviewed by the NRC staff.


07-27-88   III, Division 1, Class 1, 2, and 3                                  N-412        04-15-85  Alternative Rules for Witness- N-196-1        01-08-79  Exemption from the Shake-                            04-15-88  ing the Piping System Pressure
155I          12-18-72   Upset Heading and Roll Thread- ing ol SA-453 for High-Tempera-          2. This listing of Code Cases is applicable after the ture Bolting, Section III, Classes      effective date of this guide unless a particular Code Case
              01-21-82  down Requirements When                                          Tests of Classes 1, 2, and 3
                          1, 2, 3, and MC                         has been annulled by action of the ASME Council.
              01-21-85  Plastic Analysis is Performed                                  Piping Systems, Section III,
            .01-21-88  for Section III Division 1,                                    Division 1 Class 1 and CS Construction            N-420        02-14-85  Linear Energy Absorbing Sup- N-243         08-30-79  Boundaries Within Castings                          02-14-88  ports for Subsection NF,
              07-16-82  Used for Core Support Struc-                                    Classes 1, 2, and 3 Construc-
              05-19-85  tures, Section III, Division 1,                                tion, Section III, Division 1
              05-19-88  Class CS
                                                                    Code Case N-420 is acceptable subject to the fol- N-247          07-09-79  Certified Design Report Sum- lowing conditions in addition to those conditions
              01-21-82  mary for Component Stan- specified in the Code Case. Each applicant desir-
              01-21-85  dard Supports, Section III,
                                                                    ing to use the Code Case should provide the fol-
              01-21-88  Division 1, Class 1, 2, 3 and lowing information prior to implementing the MC
                                                                    Case: (1) indication of systems in which energy- N-309-1        12-05-85  Identification of Materials for absorbing supports are to be used, (2) fatigue de-
              07-27-88  Component Supports, Section                sign, (3) piping system analysis results consider- Ill, Division 1                            ing inelastic behavior of supports, and (4) plans N-319-1        07-24-89  Alternate      Procedure    for for inservice examination of energy absorbers.


Evaluation of Stresses in Butt Weld Elbows in Class 1 Pip- ing, Section III, Division 1 N-433        12-16-86  Non-Threaded Fasteners for N-411-1      02-20-86  Alternative Damping Values
1588          8-13-73    Electro-Etching of Section 111 Code Symbols
                                                                              12-16-89    Section III, Division 1, Class
                                                                  3. Components ordered to a specific version of a Code Case before the effective date of this guide need not be
              02-20-89  for Response Spectra Analysis
  .c. Code Cases with Contingent Approval                        changed because a subsequent revision to the Code Case is listed as the approved version in this guide.
                                                                                          1, 2, and 3 Component and of Classes 1, 2, and 3 Piping,                                Piping Supports, Section III,
                          Section III, Division 1                                        Division 1 N-476        05-06-89  Class 1, 2, 3, and MC Linear Code Case N-411-1 is acceptable subject to the                                     Component Supports-Design following conditions in addition to those condi-                                    Criteria for Single Angle tions specified in the Code Case: (1) The Code                                      Members, Section III, Divi- Case damping should be used completely and                                          sion 1, Subsection NF
                                                          1.84-3


b. Fabrication-oriented Code Cases:                          2.    In equation (4) the first + sign should be changed to an = sign.
1355.3        3-9-72      Electroslag Welding, Section 1, I11, and VIII, Division I and 2
                                                                  4. Code Cases on the approved list may be applied to This code case is approved subject to the condi-            components that were in process of construction prior tions established in Regulatory Guide 1.34, "Con-          to the effective date of this guide within the limits trol of Electroslag Weld Properties."                      specified in the Code Case and applicable regulations or recommended in other regulatory guides.


(1)    Code Cases related to welding and                                                                          f*
1361          3-9-72      Socket Welds, Section III
brazing:                                                        N-392-1      12-11-89  Procedure for Evaluation of the Design of Hollow Circular N-154-1      12-05-85  Projection Resistance Welding                                  Cross Section Welded Attach-
                                                                  5. Code Cases for Class 1 components which are not on This code case is approved when used in connec-             the approved list of this guide or other regulatory guides, tion with Section Ill, paragraph NB-3356, Fillet            or for which authorization by the Commission has not Welds.                                                      been granted, are not acceptable on a generic basis for Class I components. Special authorization may be
              12-05-88  of Valve Seats, Section III,                                    ments on Classes 2 and 3 Pip- Division 1, Class 1, 2 and 3                                    ing, Section III, Division 1 Valves                                    Code Case N-392-1 is acceptable subject to the N-262        01-07-80  Electric    Resistance    Spot          following conditions in addition to those condi-
1569          3-3-72      Design of Piping for Pressure            granted for individual cases upon special request to the Relief Valve Station                    Commission.
              09-07-82  Welding for Structural Use in              tions specified in the Code Case: Applicants
              09-05-85  Component Supports, Section               should identify in their Safety Analysis Report:
              07-27-88  III, Division 1                            (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys- N-304-4      02-23-87  Use of 20Cr-25Ni-6Mo (Alloy                tem where the Case is to be applied.


12-11-89  UNS N08366) Plate, Sheet, Strip and Welded Pipe, Class          N-393        11-28-83    Repair Welding Structural
This code case is approved subject to the condi-           6. Code Cases for other Classes of components which tions established in Regulatory Guide 1.67, "In-            are not on the approved list of this guide or other stallation of Overpressure Devices."                        regulatory guides, or for which authorization by the Commission has not been granted, should not be
                        2"and 3 Section III, Division 1                      07-30-86    Steel Rolled Shapes and N-315        02-14-83  Repair of Bellows, Section III,                      07-30-89    Plates for Component Sup-
2. Code Cases that are annulled by action of the ASME             considered acceptable on a generic basis. Specialiauthori.
              02-19-86  Division 1                                                      ports, Section III, Division 1
              02-19-89                                          N-395        12-11-89    Laser Welding, Section III,
                                                                                          Division 1 Code Case N-315 is acceptable subject to the fol-         N-452        03-08-89    Specialized      Subcontracted lowing conditions in addition to those conditions                                    Welding Process (Electron specified in the Code Case: Prior to implementa-                                    Beam Welding), Section III,
    tion of the Code Case, the applicant should pre-                                    Division 1 sent a description of the repair and a justification      N-464        03-08-89    Laser Welding of Lap-Joints, why the bellows should be repaired rather than                                      Section III, Division 1, Class 2 replaced. Following receipt of approval for the                                      and 3 Construction repair, but prior to making the repair, the appli- cant should present the results of the qualifica-                    (2)    - Other    Code   Cases   related  to tion on the full-scale facsimile bellows, including        fabrication:
    the"design requirements, to ensure that the repair meets the requirements of the design specifica-            N-215        05-15-78    Integrally Finned . Titanium tion.                                                                                Tubes, Section II, Division 1, Class 3 Construction N-316        12-11-81  Alternate Rules for Fillet            N-240        03-19-79    Hydrostatic Testing of Open
              09-17-84  Weld Dimensions for Socket                          01-21-82    Ended Piping, Section III,
              09-17-87  Welded Fittings, Section III,                      09-17-84    Division 1 Division 1, Class 1, 2, and 3                      09-17-87 N-241        07-09-79    Hydrostatic Testing of Piping, N-345-1      12-13-82  Attachment of AMS 5382                              01-21-82    Section III, Division 1
              06-30-88  Alloy 31 Seat Rings by Fric-                        09-17-84 tion Welding, Section III,                          09 -17-8 7 Division 1, Classes 1, 2, and 3 N-368
                                                                              12-11-89
                                                                              07-06-83    Pressure Testing of Pump I
N-391-1      07-24-89  Procedure for Evaluation of the Design of Hollow Circular                      06-30-87    Discharge, Section III, Divi- Cross Section Welded Attach-                                    sion 1, Classes 2 and 3 ments on Class 1 Piping, Sec-             Code Case N-368 is acceptable subject to the fol- tion III, Division 1                      lowing condition in addition to those conditions specified in the Code Case: Applicants using this Code Case N-391-1 is acceptable subject to the                Code Case should provide information to dem- onstrate that the length of discharge piping is rea- following conditions in addition to those specified in the Code Case: The following typographical                  sonably short.


errors need to be corrected:
Council should be considered as deleted from the                  zation may be granted for individual cases upon special approved list as of the date of the ASME Council aclion.           request to the Commission.
                                                                N-369        02-14-83    Resistance Welding of Bel-
      1.   In equation (3) the + sign should be                              02-19-86    lows, Section III, Division 1 changed to an = sign.                                              02-19-89                                    I
                                                          1.84-4


N-414        02-20-86    Tack Welds for Class 1, 2, 3          1720-2      11-20-78  Weld End Preparation for
1.84-3
            02-20-89    and MC Components and                (N-106-2) 08-28-81      Section III, Division 1 Con- Piping Supports, Section III,                      09-17-84   struction Division 1                                        09-17-87 N-430        02-28-86    Alternative Requirements for              Code Case 1720-2 (N-106-2) is acceptable sub-
            02-28-89    Welding Workmanship and                  ject to the following condition in addition to Visual Acceptance Criteria for            those conditions specified in the Code Case: The Class 1, 2, 3 and MC Linear-              acceptance of weld end preparations other than Type and Standard Supports,              those shown in Figures 1, 2, and 3 of the Code Section III, Division 1                  Case should be evaluated on a case-by-case Code Case N-430 is acceptable subject to the fol-              basis.


lowing conditions in addition to those conditions          1792-2      01-08-79    Fiberglass Reinforced Ther- specified in the Code Case: (1) The applicant              (N-155-2) 01-21-82      mosetting Resin Pipe, Section should demonstrate that.the applicable supports                        01-21-85    III, Division 1 are not subject to cyclic loading in excess of                          01-21-88
APPENDIX
    20,000 cycles and (2) the first sentence of
         Numerical Listing of Code Cases
    3.0(f) (1) should be replaced with the following:              Code Case 1792-2 (N-155-2) is acceptable sub-
1355-3                                 1541-1
    "For material 3/8 in. and less nominal thickness,            ject to the following condition in addition to undercut depth of 1/32 in. on one side of the                  those conditions specified in the Code Case: The member for the full length of the weld, or 1/32                applicant should comply with the additional re- in. on one side for one-half the length of the                quirements that are specified in Regulatory Guide weld, and 1/16 in. for one-fourth the length of                1.72, "Spray Pond Piping Made from Fiberglass- the weld on the face of a rectangular tube or                  Reinforced Thermosetting Resin."
1361-2                                 1552
    one-fourth the length of the weld on the same              N-192-2      09-16-81    Use of Braided Flexible Con- side of the member is acceptable."                                    09-17-84    nectors, Section III, Division
1461-1                                 1553
                                                                            09-17-87    1, Class 2 and 3 c. Code Cases with contingent approval:                    Code Case N-192-2 is acceptable subject to the following conditions in addition to those condi- N-31-1        07-18-85  Elastomer Diaphragm Valves,              tions specified in the Code Case: The applicant
1470-2                                 1554
              07-18-88    Section III, Class 2 and 3                should indicate system application, design and Code Case N-31-1 is acceptable subject to the                  operating pressure, and pressure-temperature following conditions in addition to those condi-              rating of the flexible hose. Data to demonstrate tions specified in the Code Case: Each applicant              compliance of the flexible hose with NC/
1.471-1                                 1555
    who applies the Code Case should indicate in the              ND-3649, particularly NC/ND-3649.4(e), are re- referencing Safety Analysis Report that the serv-              quired to be furnished with the application.
1477-1                                 1569
 
1494-1                                 1573
ice life of the elastomer diaphragm should not            N-284        08-25-80 Metal        Containment  Shell exceed the manufacturer's recommended serv-                            05-25-83 Buckling Design Methods, ice life. This recommended service life should
1506                                    1574
                                                                            07-30-86 Section III, Division 1, Class not exceed 1/3 of the minimum cycle life as es-
1508                                   1575
                                                                            07-30-89- MC
1516-1                                  1580.1
    tablished by the requirements of paragraph 3 of the Code Case. In addition, the service life of the            Code Case N-284 is acceptable subject to the fol- elastomer diaphragm should not exceed 5 years,                lowing condition in addition to those conditions and the combined service and storage life of the              specified in the Code Case: Prior to implementa- elastomer diaphragm should not exceed 10 years.              tion of the Code Case, the applicant must dem- onstrate to the satisfaction of the NRC staff (via Safety Analysis Report) that any axisymmetric
1533                                   1581
              12-11-89  Internal and External Valve N-62-6                                                            techniques that are proposed will be applicable to Items, Section III, Division 1,          a vessel having large asymmetric openings and Class 1, 2 and 3                          that the overall margin used to prevent shell Code Case N-62-6 is acceptable subject to the                buckling is acceptable.
1534                                   1588
 
1535.2                                  1601
following condition in addition to those condi- N-292        01-05-81 Depositing Weld Metal Prior tions specified in the Code Case: The Code re-
1536                                   1606
                                                                            11-28-83 to Preparing Ends for Weld- quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality                          07-30-86 ing, Section III, Division 1, Assurance,"    and, in addition, Class 3 valve                        07-30-89 Class 1, 2, and 3 Construction manufacturers should also meet the provisions of              Code Case N-292 is acceptable subject to the fol- NCA 4000.                                                      lowing conditions in addition to those conditions
1539                                    1607
                                                        1.84-5
1540-1                                  1614
 
                     1.84-4
specified in the Code Case: Class 3 piping that is                1477-1          03-09-72    Use of. 1970 Addenda of longitudinally welded and that has a weld effi-                                  01-01-78    ANSI B31.7, Section III
      ciency factor of .1.0 as selected from Table                      1494-1          03-03-73    Weld Procedure Qualification ND-3613.4-1 should receive a 100 percent                                          01-01-78    Test, Section III
      volumetric examination (RT or UT) of the de-                      1506            12-13-71    Stress Intensification Factors, posited weld metal in accordance with the re-                                    01-01-78    Section III, Class 2 and 3 quirements of ND-500
 
===0. Piping===
                                                                        1516-2          08-11-75    Welding of Seats or Minor In- N-318-4          12-11-89    Procedure for Evaluation of                (N-24)          07-01-78    ternal    Permanent Attach- the Design of Rectangular                                              ments in Valves for Section Cross Section Attachments on                                          III Applications Class 2 or 3 Piping, Section              1516-2          11-20-788  Welding of Seats or Minor In- III, Division 1                            (N-24)          01-01-80    ternal    Permanent        Attach- Code Case N-318-4 is acceptable subject to the                                              ments in Valves for Section following conditions in addition to those condi-                                            III Applications tions specified in the Code Case. Applicants                      15339          06-14-72    Pressure Temperature Ratings should identify in their Safety Analysis Report:                                07-01-75    of SA-351 Grades CF8A,
         (1) the method of lug attachment, (2) the piping                                            CF3, and CF3M, Section III
        system involved, and (3) the location in the sys-                1535-2          04-30-73    Hydrostatic Testing of Section tem where the Case is to be applied.                                            03-21-77    III, Class 1 Valves
                                                                        1536            08-14-72    Closing Seam for Electrical
        2. Code Cases that were endorsed by the NRC in
                                                                                        07-01-77    Penetrations for Section III,
a prior version of this guide and were later annulled                                                Class 2, 3, and MC
by action of the ASME should be considered as
                                                                        1539-1         11-21-77    Metal Bellows and Metal deleted from the list of acceptable Code Cases as of (N-30-1)        01-01-81    Diaphragm        Stem      Sealed the date of the ASME action that approved the                                                        Valves, Section III, Division annulment. Such Code Cases, which were annulled
                                                                                                      1, Classes 1, 2, and 3 on or after July 1, 1974, are listed below by number,                    1541-3          05-15-78    Hydrostatic Testing of Em-
                    4            5 effective dates, and title.                                              (N-32-3)        07-01-79    bedded Class 2 and Class 3
1361-2         03-09-72      Socket    Welds,    Section    III                                    Piping for Section III, Divi-
                03-01-79                                                                            sion 1 Construction N-32-4          03-16-81    Hydrostatic Testing of Em- Code Case 1361-2 was acceptable when used in                                    03-16-84    bedded Class 2 and 3 Piping connection with Section III, paragraph NB-3356, for Section III, Division 1 Fillet Weld
 
====s. Construction====
1461-16          03-09-72    Electron Beam Welding, Sec-                    Code Case N-32-4 was acceptable subject to the
                  02-16-77    tion 1, 111, and VIII, Division                following conditions in addition to those condi-
                              1 and 2                                        tions specified in the Code Case:
1470-27          12-18-72 External Pressure Charts for                        The acceptance was based on the following clari-
                  11-04-74 High-Strength Carbon Steels                        fication and interpretation. Code Case N-32-4 and for Low-Alloy Steels,                      does not replace paragraph NC/ND 6129, "Pro- Section VIII, Division 1 and                    visions for Embedded or Inaccessible Welded
                              2, and Section III
                                                                              Joints in Piping," of the Cod
 
====e. The intent of the====
1471-1          03-09-72 Vacuum            Electron      Beam                Code Case is to (1) provide additional testing
                  01-01-78 Welding of Tube Sheet Joints,                      above Code requirement and (2) permit liquid Section III                                    penetrant or magnetic particle testing in place of
      4 Earlier date-date Code Case was approved by ASME;                      radiographic testing for Class 3 piping with 3/8"
later date-date Code Case was annulled. Where more than two dates appear, the last date is the date that the Code Case                nominal wall thickness or less.
 
was annulled, The middle date (or dates) was the date of re-              8 affirmation of the Code Case.                                                This revision of the Code Case was originally approved by
    5 Code Cases 1355-3, 1534, and 1554, which were listed in            the ASME on 8-11-75 and was annulled on 7-1-78 because of the publication of revisions to Section III in the Winter 1977 the original issue of this guide, were annulled by ASME action Addenda. However, the users did not believe that the Code prior
    6 to July 1, 1974.                                               Case was covered in the Code revision; therefore, ASME reaf- Code Case 1461-1 is no longer listed as a Section III Code        firmed the Case on 11-20-78. Because of these circumstances Case and is therefore deleted from the acceptable listing.              and because there were no changes in the Code Case, the NRC
      7 The annulment of Code Case 1470-2 was effective upon              considers that this Case was in effect during the period 7-1-78 ASME approval of Code Case 1630. However, because of an                through 11-20-78.
 
9 oversight, the annulment was not noted until publication of                Code Case was annulled on date as indicated, but the an- Supplement No. 13 to the 1974 Code Cases.                              nulment was first indicated in Revision 12 to this guide.
 
1.84-6
 
Paragraph (1) contains an additional require-                    3 components for fluid systems. These designa- ment to the Code. It was, therefore, acceptable                  tions should be established and justified in the but unnecessary to include in the Code Case.                      design specifications.
 
Paragraph (2) is a variation in the volumetric examination technique and was acceptable as written. Paragraph (3) contains an additional re-          1607-1        11-04-74    Stress Criteria for Section III,
    quirement and is not a relaxation of the Code. It                        07-01-77    Classes 2 and 3 Vessels was, therefore, acceptable but unnecessary to in-                                    Designed      to    NC/ND-3300
    clude in the Code Case.                                                              Excluding        the    NC-3200
                                                                                          Alternate Code Case 1607-1 was acceptable subject to the
1552-1        08-29-77  Design by Analysis of Section                interpretation that the stress limit designations of (N-35-1)      07-01-79  III, Class 1 Valves                          "Upset," "Emergency," and "Faulted" do not
1553-19      03-03-75  Upset Heading and Roll                        necessarily imply agreement with specified plant
              01-01-76  Threading of SA-453 for Bolt-                conditions applicable to ASME Code Class 2 and ing in Section III                            3 components for fluid systems. These designa-
1555-1        01-14-77 Certification of Safety Relief                  tions should be established and justified in the
              01-01-78 Valves, Section III, Division 1                 design specifications.
 
1569         03-03-7510 Design      of    Piping    for
              07-01-79 Pressure Relief Valve Sta- tion, Section III                      N-55-1         04-05-84    Inertia and Continuous Drive Code Case 1569 was acceptable subject to com-              (1609)        04-05-87    Friction Welding, Section III,
    pliance with the recommendations contained in                                        Division 1 Regulatory Guide 1.67, "Installation of Over-              1614          12-17-7310 Hydrostatic Testing of Piping pressure Protection Devices."                                            01-01-79 Prior To. or Following the In- stallation of Spray Nozzles for Section III, Classes 1, 2, and
1573         04-30-73  Vacuum Relief Valves, Sec-                                        3 Piping Systems
              01-01-78  tion III                                1620          03-02-74 Stress Category for Partial
1574         04-30-73  Hydrostatic Test Pressure for          (N-6 1)      01-08-79 Penetration Welded Penetra-
              12-31-74  Safety Relief Valves, Section                        01-08-82 tions, Section III, Class 1 III                                                              Construction
1580-1        11-05-73  Buttwelded Alignment Toler-            1623          03-02-74 Design by Analysis for Section
              01-01-78  ance and Acceptable Slopes                            03-01-79 III, Class I Sleeve-Coupled for Concentric Centerlines for                                    and Other Patented Piping Section III, Class 1, 2, and 3                                   Joints Construction                            1630-1        07-10-78 External Pressure Charts for
1581          06-25-73  Power-Operated Pressure Re-            (N-66-1)      07-10-81 High Yield Strength Carbon
              03-01-79  lief Valves, Section III                                          Steels and Low Alloy Steels.
 
1588          08-13-73  Electro-Etching of Section III                                    (Yield Strength above 38 Ksi (N-46)        03-19-79  Code Symbols                                                      to 60 Ksi Inclusive.) For Sec-
              03-19-82                                                                    tion III, Class 1, 2, 3, and MC
1601        11-05-73  Limits of Reinforcement for            1630-1        12-11-8111 External Pressure Charts for
              07-01-74  Two-Thirds Area, Section III,          (N-66-1)      12-05-84 High Yield Strength Carbon Class 1                                                12-05-87 Steels and Low Alloy Steels.
 
1606-1      12-16-74    Stress Criteria Section III,                                      (Yield Strength above 38 Ksi
              07-01-77  Classes 2 and 3 Piping Subject                                    to 60 Ksi Inclusive.) Section to Upset, Emergency, and                                          III, Division 1, Class 1, 2, 3, Faulted Operating Conditions                                      and MC
                                                                1633          04-29-74 Brazing of Seats to Class 1, 2, Code Case 1606-1 was acceptable subject to the                            01-01-78 and 3 Valve Body or Bonnets, interpretation that the stress limit designations of                                 Section III
      "Upset," "Emergency," and "Faulted" do not                    "1The Code Case was annulled on July 10, 1981 (ASME
    necessarily imply agreement with specified plant          mandatory annulment date). It was reinstated on Decem- ber 11, 1981. Because of the circumstances and because there conditions applicable to ASME Code Class 2 and              were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 7-10-81 through
10 Corrected date.                                              12-11-81.
 
1.84-7
 
1635-112      08-12-74    Stress Criteria for Section III,        1672            11-04-74  Nuclear Valves for Section
              07-01-77    Class 2 and 3 Valves Sub-                              03-21-77  1II, Division 1, Class 1, 2, 3 jected to Upset, Emergency,                                        Construction and        Faulted    Operating        1675            12-16-74  Tubesheet to Shell or Formed Conditions                                              07-01-76  Head Weld Joints, Section Code Case 1635-1 was acceptable subject to the                                          III, Class 1 Vessels interpretation that the stress limit designations of        16769          12-16-74  Clarification of Stress Intensi-
      "Upset," "Emergency," and "Faulted" do not                                  07-01-76  ties in Curved Pipe or Welded necessarily imply agreement with specified plant                                        Elbows,' Section III
      conditions applicable to ASME Code Class 2 and              1677            12-16-74  Clarification of Flange Design
      3 components for fluid systems. These designa-              (N-82)          03-01-79  Loads, Section III, Class 1, 2, tions should be established and justified in the                                        and 3 design specifications.                                      1678            12-16-74  Butterfly Valves of Circular
                                                                                    01-08-79  Cross Section Larger than 24
1636-112      08-12-74    Stress Criteria for Section III,                        01-01-80  in. NPS for Section III, Class
              07-01-77    Class 2 and 3 Pumps Sub-                                          2 and 3 Construction jected to Upset, Emergency,            1681-113        03-03-75  Organizations        Accepting and        Faulted    Operating        (N-84)          03-01-79  Overall Responsibility for Sec- Conditions                                                        tion III Construction
                                                                    1683-1          03-01-76  Bolt Holes for Section III,
      Code Case 1636-1 was acceptable subject to the
                                                                                    07-01-76  Class 1, 2, 3 and MC Compo- interpretation that the stress limit designations of
        "Upset," "Emergency," and "Faulted" do not                                            nent Supports
                                                                    1685          04-28-75    Furnace Brazing Section III,
      necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and                              01-01-78  Class 1, 2, 3 and MC Con- struction
        3 components for fluid systems. These designa-
                                                                    1686.          03-03-75  Furnace Brazing, Section III,
      tions should be established and justified in the
                                                                                    01-01-78    Subsection NF, Component design specifications.
 
Supports
1651            0.8-12-74    Interim Requirements for Cer-          1689-1        09-10-76    Alternate PWHT Time and
                03-01-79    tification of Component Sup-                          01-01-78  Temperature      for    SA-182 ports, Section III,. Subsection'                                  Grade F-22, SA-387 Grade NF                                                                22, Class 2, and SA-335
1657            11-04-74 Stress Criteria for Class 2                                            Grade P-22 Section III, Class
                07-01-77 and 3 Atmospheric and Low                                              1, 2, 3 and CS
                            Pressure (0-15 psig) Steel Code Case 1689-1 was acceptable subject to the Storage Tanks
1659            11-04-74 Interconnection of Two Piping                      following condition in addition to that specified
                07-01-77 Systems for Section III, Class                    in the Code Case: The alternate postweld heat
                              1, 2, and 3 Construction                      treatment should be prequalified along with the
1660          11-04-74 Overpressure Protection Un-                        applicable welding procedure in accordance with ASME Section IX.
 
(N-77)        03-01-79 der Emergency            Operating Conditions for Section III,            1692            04-28-75  Rules for Design of Welded Class 1                                (N-90)          07-01-78  Class 1 Pumps
1661          11-04-74 Postweld          Heat    Treatment        1695-1          11-03-75  Brazing, Section 11, Division
                01-01-78 P-No. 1 Materials for Section                              01-01-78    1, Class 3 III, Class 1 Vessels                    1700            11-03-75  Determination of Capacities
1662          11-04-74 Shop Assembly of Compo-                    (N-94)          03-19-79  of Liquid Relief Valves, Sec-
                01-01-78 nents, Appurtenances and                                   03-19-82  tion Il, Division 1, Class 1, 2, Piping Subassemblies for Sec- and 3 tion III, Class 1, 2, 3 and MC          1701-2          07-09-79    Determination of Capacities Construction                            (N-95-2)        07-09-82  of Vacuum Relief Valves,
1665          11-04-74 Pressure-Temperature Ratings                                            Section    III,  Division    1, (N-81)        07-01-78 for Class 1 Valves Made from                                            Classes 2, 3, and MC and
                            5 Cr-1/2 Mo, Section III                                            Division 2 Concrete Contain- ments
    ' 2 Code Cases 1635 and 1636 were approved by ASME on                ' 3 Code Case 1681 was approved by ASME on 12-16-74 July 1, 1974, and revised on August 12, 1974. Because Code            and revised on 3-3-75. Because Code Case 1681 was not in Cases 1635 and 1636 were not in effect on September 1, 1974,        effect on March 31, 1975, the Code Case was not included in they are not included in this guide.                                this guide.
 
1.84-8
 
1702-1        07-11-77    Flanged Valves Larger than                  should provide justification in the referencing (N-96-1)      01-01-80    24 inches for Section III,                  Safety Analysis Report for the fluid selected for Division 1, Class 1, 2 and 3                use in the pressure test. The information pro- Construction                                vided should demonstrate that the fluid selected
1703          06-30-75    Brazing of Copper Alloys Sec-              will not have deleterious effects on the material
                01-01-78    tion III, Class' 2                          of the pressure boundary and that the fluid may
1706          06-30-75    Data Report Forms for Com-                  be safely used at the specified temperature and
                12-31-75    ponent Supports, Section 11,                pressure of the test. When the fluid selected for Class 1, 2 and 3          1,              use is the operating fluid, additional information
1711            11-03-75    Pressure Relief Valve Design                is not required.
 
(N-100)        01-08-79    Rules, Section III, Division 1,
                01-21-82    Class 1, 2 and 3                      1729            11-03-75  Minimum          Edge    Distance-
                01-01-83                                          (N-111)          03-01-79  Bolting for Section III, Divi- sion 1, Class 1, 2, and 3 and Code Case 1711 was acceptable subject to the                                              MC Construction of Compo- following conditions in addition to those condi-                                          nent Supports tions specified in the Code Case. The following                1732            11-03-75    Hardsurfaced Valves with In- information should be provided in the Safety                  (N-114)        01-01-79    let Connections less than 2-in.
 
Analysis Report:                                                                          Nominal Pipe Size for Section III, Division 1 Class 1 and 2
        (1)    If stress limits are used in excess of those Construction specified for the upset operating condition,
                                                                    1733            11-03-75    Evaluation of Safe Shut Down it should be demonstrated how the pressure (N-115)        01-01-78    Earthquake Loadings for Sec- relief function is ensured. Refer to para- tion III, Division 1, Class MC
                graph 3.1, Section 1, of the Case for Class 1 Containment Vessels and paragraph 3.2, Section II, of the Case
                                                                      1734            11-03-75    Weld Design for Use for Sec- for Class 2 and 3 pressure relief valves.
 
(N-116)        01-01-78    tion III, Division 1, Class 1, 2,
        (2)    If Case 1660 is to be used in conjunction                                          3 and MC Construction of with this Case, it should be stated that the                                        Component Supports stress limits of Case 1660 supersede those                  Code Case 1734 was acceptable subject to the of paragraph 3.2(b), Section I, of Case                    following conditions in addition to those condi-
                1711. Functional assurance of (1) above is                tions specified in the Code Case: If the configu- required in all situations.                                ration of Figure 1 of the Code Case is used for Class 1 and MC component supports, full pene-
    1712            08-11-75    Nameplates and Stamping for                  tration welds should be used. The application of (N-101)        03-01-79    Section III, Division 1, Class              the configuration shown in Figures 2 and 3
                                1, 2, 3 and MC Construction                  should be restricted to the welding of cans for as Referenced in NA-8300                    spring encapsulation in spring hanger
 
====s. In Figure====
    17189          08-11-75    Design of Structural Connec-                  3, the length of the leg of the fillet weld adjacent
                    07-01-76                                                  to the plate should be equal to the thickness of tions for Linear Type Compo- nent Supports, Section III,                  the exposed end of the plate; also, the leg of the Division 1, Class 1, 2 and 3                  fillet weld adjacent to the shell should be equal to and MC                                      the thickness of the exposed end of the shell.
 
17199          08-11-75    Single-Welded, Full-Penetra-
                                                                        1739-4        11-17-80      Pump Internal Items, Section
                    07-01-76    tion Sidewall Butt Joints in Atmospheric Storage Tanks,              (N-119-4)      12-01-83      III, Division 1, Class 1, 2, Section III, Division 1, Class 2                                   and 3
      1726          11-03-75    Refinement of Low Alloy                1744          03-01-76      Carbon Steel Pipe Flanges (N-109)        03-01-79    Steel Heat Affected Zone Un-          (N-121)        03-01-79      Larger than 24 in., Section der Overlay Cladding, Section                                        111, Division 1, Class 2 and 3 III, Division 1, Class 1 Com-                                        Construction ponents                                1765          04-26-76      Machining After Hydrostatic
      1727            12-22-75    Alternate Test Fluids, Section                        07-01-77      Testing    Class  2    and    3 (N-110)        01-01-79    III, Division 1                                                      Construction, Section III, Di- vision 1 Code Case 1727 was acceptable subject to the                1768            06-29-76      Permanent Attachments to following condition in addition to those condi-                              01-01-78      Containment      Vessels-Class MC, Section 1I1, Division tions specified in the Code Case: The applicant                                                                        I
                                                                  1.84-9
 
1769-1        02-16-77    Qualification of NDE Level            1808        02-16-77  F-Number Classification of
              10-01-77    I1l Personnel, Section III, Di-                    01-01-78  Low Alloy and Carbon Steel vision 1                                                      Bare Rod        Electrodes Sec-
1774-1        07-11-77 Minimum Wall Thickness for                                        tions I, II, Il1, IV, V, VIII,
(N-142-1)    01-01-80 Class 2 and 3 Valves, Section                                    and IX
                          Ill, Division 1                        1812        03-23-77    Size of Fillet Welds for Socket
1775          08-13-76 Data Report Forms for Core (N-174)      01-07-80  Welding of Piping, Section
              08-13-79 Support Structures, Class CS,
                                                                              01-01-81    III, Division 1 Section III, Division 1
                                                                1818        03-23-77  Welded Joints in Component
1780-1        07-10-78 10 Hydrostatic      Testing    and (N-146-1)                                                        (N-175)      07-01-79    Standard Supports, Section
              12-11-81 Stamping of Components,
              01-01-82 Section        1II,    Division    1                              111, Division 1 Construction Code Case 1818 was acceptable subject to the Code Case 1780-1 was acceptable subject to the                  following condition in addition to those condi- following conditions in addition to those condi-                tions specified in the Code Case: That portion of tions specified in the Code Case: On a generic                  the unwelded housing that is limited to 900 maxi- basis, the application of the Code Case is limited              mum should include a minimum of two sectors to pumps and valves. Application to other com-                  that are uniform in length.
 
ponents should be treated on a case-by-case ba- sis. Each licensing application in which the Code Case is to be used should contain information showing that, as a minimum, the closure fixture            N-179        07-11-77    Openings in Valves for Sec- will impose loads that result in stresses equal to                      07-11-80    tion III, Division 1, Class 1, 2 or greater than those. induced during the hydro-                                    and 3 Construction static test of a complete pump assembly. A clo-            N-182        07-11-77    Alternate Rules for Procedure sure fixture for the part being tested that is simi-                    07-01-81    Qualification Base Material lar in size and shape to the actual mating part is                                  Orientation, Section III, Divi- considered adequate to impose these loads. It is                                    sion 1, Class 2 and 3 Con- not intended that piping reaction loadings be                                        struction simulated in the hydrostatic testing.                      N-184        07-11-77    Roll Threading of SA-453
                                                                              07-01-79    Bolting for Section III, Divi-
1783-1      01-14-77    Qualification of Nondestruc-                                  sion 1, Class 1, 2, 3 or CS
              01-01-79    tive Examination Personnel,                                    Construction Section III, Division 1              N-189        08-29-77    Primary Membrane Plus Pri-
                                                                              07-01-79    mary Bending Stress Intensity Code Case 1783-1 was acceptable subject to the                                      Limits for Other Than Solid following condition in addition to those condi- Rectangular Sections for Sec- tions specified in the Code Case: The first sen- tion III, Division 1, Class MC
    tence of paragraph (1) should be replaced with Construction the following: "The certification of the Level III
    nondestructive examination personnel for the                N-193        11-21-77    Use of SB-61 and SB-62 purpose of this Section of the Code shall be the                        11-21-80    Bronze for Section III, Di- responsibility of the employer of the Level III in-                                 vision 1, Class 3 Flange and dividual. If the employer is not a Certificate                                      Socket Weld End Valves Holder, then the verification of such certificate is        N-199        03-20-78    Intervening Elements, Section the responsibility of the Certificate Holder."                          01-01-81    1II, Division 1, Classes 1, 2, 3 and MC Component Con- struction
1791        01-14-77    Projection Resistance Welding (N-154)      01-14-80    of Valve Seats, Section III,
                          Division 1, Class 1, 2 and 3              Code Case N-199 was acceptable subject to the Valves                                    following condition in addition to those condi-
1796        01-14-77    Body Neck Thickness Deter-                tions specified in the Code Case: The applicant (N-159)      07-01-78    mination for Valves with Inlet            should provide information in the referencing Connections 4-Inch Nominal                Safety Analysis Report that demonstrates that all Pipe Size and Smaller, Sec-                intervening elements have been designed in com- tion III, Division 1, Class 1, 2,          pliance with the requirements of the respective and 3                                      design specification.
 
1.84-10
 
1693        03-20-78    Welding Procedure Qualifica-          N-252        11-19-79  Low Energy Capacitive Dis- (N-212)      01-01-81    tion of Dissimilar Metal Welds                    07-01-82  charge Welding Method for When "Buttering" with Alloy                                  Temporary or Permanent At- Weld Metal and Heat Treat-                                   tachments to Components and ment May Be Involved, Sec-                                    Supports, Section III, Division tion III, Division 1, and Sec-                                1, and XI
                        tion IX                                  Code Case N-252 was acceptable subject to the N-214-2      05-25-83 Use of SA-351 Grade CN7M,                    following conditions in addition to those condi-
            12-31-83 for Valves, Section III, Divi-              tions specified in the Code Case: The applicant sion 1                                    should indicate in the Safety Analysis Report the N-217-1      01-07-80 Postweld Heat Treatment of                  application, the material, and the material thick-
            09-07-82 Weld Deposit Cladding on                    ness to which the strain gage or thermocouple
            12-05-84 Classes 1, 2, 3, MC, and CS                  will be attached by CD welding.
 
09-05-85 Items, Section III, Division 1
            02-23-87                                          N-260-2      12-05-85  Weld Repair of SA-182 Type N-220        08-28-78 Code Effective Date for Com-                          12-05-88  316 Forgings, Section Il1, Di-
            07-13-81 ponent Supports, Section III,                                    vision 1, Classes 1, 2, 3, and
            07-13-84 Division 1                                                      MC
N-226        11-20-78 Temporary Attachment of
            01-01-80 Thermocouples, Section III,                  Code Case N-260-2 was acceptable subject to the Division 1, Class 1, 2 and 3              following condition in addition to those condi- tions specified in the Code Case: Type 308 L
                        Component Construction welding materials should not be used to repair N-228        03-19-79 Alternate Rules for Sequence                grade F 316 N forgings because of the difference
            03-19-82 of Completion of Code Data                  in strength levels.
 
Report Forms and Stamping for Section III, Class 1, 2, 3 N-261        05-15-80  Weld Procedure Qualification and MC Construction
                                                                            12-13-82    for Materials with Impact Re- N-229        01-08-79 Alternate Rules for Fabrica- quirements for Section II,
            01-21-82 tion Welding SB-148 Alloy Division 1, Class 3 Construc-
            01-21-85 CDA 954 for Section III, Di-                                    tion
            01-21-88 vision 1, Class 3 Construction          N-263        03-17-80    Alternate Thread Forms, Se- N-233        01-08-79 Alternate Rules for PWHT of                          03-17-83    ries and Fits for Component
            01-21-82 P-No. 6, Group 4 Material for                                    Supports, Section III, Divi-
            09-17-84 Section III, Division 1, Class                                    sion 1
            09-17-87 1, 2, or 3 Construction N-237-2      05-25-83 Hydrostatic Testing of Inter-                Code Case N-263 was acceptable subject to the
            07-30-86 nal Piping, Section III, Di-                  following conditions in addition to those condi-
              12-07-87 vision 1, Classes 2 and 3                  tions specified in the Code Case. The following information should be provided in the Safety
            07-01-88 Analysis Report: (1) a description of the appli- N-238        05-14-79 High Temperature Furnace cation, (2) a need for the use of the Code Case,
            01-01-82 Brazing of Seat Rings in Valve              and (3) a demonstration that support design will Bodies or Bonnets for Section            withstand maximum conditions of loading with III, Division 1, Class 1, 2, and        the worst combination of thread tolerance.
 
3 Valves N-271        03-17-80    Simplified Method for Ana- Code Case N-238 was acceptable subject to the
                                                                            02-14-86    lyzing Flat Face Flanges with following conditions in addition to those condi- Metal to Metal Contact Out- tions specified in the Code Case: The furnace                                      side the Bolt Circle for Sec- brazing process procedure qualification should                                    tion III, Class 2, 3, and MC
    include a verification for nonsensitization as                                    Construction given in ASTM A 262-70, Practices A or E, or              N-272        05-15-80    Compiling    Data    Report ASTM A 708-74 whenever materials subject to                            01-01-82    Forms, Section III, Division 1 sensitization are to be brazed. Documentation is          N-275        05-15-80    Repair of Welds, Section Il1, required that a nonsensitizing brazing procedure                      12-07-82    Division 1 was employed for valves produced to this Case.                        12-31-83
                                                        1.84-11
 
Code Case N-275 was acceptable subject to the                  tions specified in the Code Case: Applicants following condition in addition to those condi-                should identify in their Safety Analysis Report tions specified in the Code Case: Use of the                    (1) the minimum length of thread engagement Code Case is applicable only when the removal                  and (2) the procedure used to establish thread of an indication requires that the full weld thick-            engagement.
 
ness be removed and, in addition, the backside of the weld assembly joint is not accessible for            N-320        07-13-81    Alternate PWHT for SA-487, the removal of examination material. If an indi-                          12-31-83  Grade CA6NM, Section III,
    cation is removed and weld-metal layers still re-                                  Division 1 main; it is not acceptable to gouge through the            N-328        12-11-81 Thermit Brazing or Welding wall in order to qualify for use of the Code Case.                      09-17-84 of Nonstructural Attachments, Instead, examination of the cavity is required                          09-17-87 Section III, Division 1 when such an indication has been removed.                  N-336        06-17-82 Examination of Welds Inac-
                                                                            06-30-83 cessible During Pressure Test, Section III, Division 1, Class N-276        03-17-80  Welding of SA-358 Pipe, Sec-
                                                                            -        .  MC
            02-14-83  ti6n III,, Division 1                  N-339        06-17-82  Examination of Ends of Fillet
            02-14-86
                                                                            09-17-84  Welds, Section III, Division 1, N-279        05-15-80  Use of Torquing as a Locking Classes 1, 2, and MC
            07-13-81  Device for Section III, Divi-          N-341        06-17-82  Certification of Level III NDE
                        sion 1, Class 1, 2, 3, and MC
                                                                            05-19-85  Examiner, Section III, Divi- Component Supports
                                                                            02-23-87  sion 1 and 2 Code Case N-279 was acceptable subject to the                            07-01-88 following condition in addition to those condi-            N-346        06-17-82  Explosive Welding,      Section tions specified in the Code Case: When torquing                          05-19-85  III, Division 1 or other preloading is used as a locking device                          06-30-86 and the joint is later unloaded or disassembled,          N-347          12-07-82  Continuous      Electric  Resis- the bolting should be replaced unless it can be                          12-13-85  tance    Seam    Welding' of demonstrated or proved to the authorized nu-                                        P-No. 8 Materials for Compo- clear inspector that the original bolting has not                                  nent Supports, Section III,
    been permanently strained.                                                          Division 1 N-349          07-16-82  Pressure Testing Piping Sys-
                                                                              12-31-85  tems, Section III, Division 1, N-280        05-15-80    Alternate Rules for Examina-                                  Classes 2 and 3
            07-01-81    tion of Welds in Section III,        N-350          12-07-82  Postweld Heat Treatment- Class 3 Storage Tanks                                09-05-85  Thickness of Material, Sec- N-281        05-15-80    Welding Operator Perform-                                      tion III, Division 1
            07-01-81    ance Qualification, Section III, Division 1                            Code Case N-350 was acceptable subject to the N-282        05-15-80    Nameplates for Valves, Sec-                following condition in addition to those condi-
            05-25-83    tion III, Division 1, Class 1, 2,        tions specified in the Code Case: Applicants
            07-30-86    and 3 Construction                        wishing to use this Case for other than P-1 mate- rials should demonstrate that the use of this Case
            07-30-89 N-300        11-17-80    Pressure-Temperature        Rat-          will not adversely affect the required material
            12-01-83    ings, Hydrostatic Tests, and              properties.
 
Minimum Wall Thickness of Valves, Section III, Division        N-357          12-13-82  Certification of Material for
                          1, Class 1                                          05-19-85  Component Supports, Section N-302        03-16-81    Tack Welding, Section IIi,                          07,-01-88  III, Division 1, Subsection NF
              11-28-83  Division 1, Construction              N-359          12-13-82  Weld Connection for Coaxial N-309        05-11-81    Identification of Materials for                      12-31-84  Cylinders, Section III, Divi-
            05-11-84    Component Supports, Section                                    sion 1, Class 1 III, Division 1                      N-362-2        07-12-84  Pressure Testing of Contain- N-314        05-11-81    Alternate Rules for Thread                          04-05-87  ment Items, Section III, Divi-
            05-11-84    Engagement, Section III, Di-                        07-27-87  sion 1, Classes 1, 2, and MC
                        vision 1                                            07-01-88 N-376          05-25-83  Pressure Testing of Embedded Code Case N-314 was acceptable subject to the                            07-30-8*6  Class 2 and 3 Piping, Section following conditions in addition to those condi-                                    III, Division 1
                                                        1.84-12
 
N-377          04-04-83    Effective Throat Thickness of          1516-1      06-25-73    Welding of Seats in Valves for
              12-31-83    Partial Penetration Groove                          08-11-75    Section III Applications Welds, Section III, Division 1,        1539         11-06-72  Metal Bellows and Metal Dia- Classes 1, 2, and 3                    (N-30-1)      11-21-77  phragm Stem Sealed Valves, N-383-1        07-18-85    Weld Repair of SA-182 Aus-                                      Section III, Classes 1, 2,
              09-05-85    tenitic Forgings, Section III,                                  and 3 Division 1, Classes 1, 2, and 3        1540-1        03-03-73  Elastomer Diaphragm Valves,
                                                                                01-14-77  Section III, Classes 2 and 3 Code Case N-383 was acceptable subject to the              1540-2        01-14-77  Elastomer Diaphragm Valves, following condition in addition to those condi-            (N-31)        01-07-80  Section III, Class 2 and 3 tions specified in the Code Case: Applicants who
                                                                                02-14-83 apply the provisions of this Case to permit mate-
                                                                                07-18-85 rial manufacturers to weld repair austenitic forg- ings without re-solution heat treatment should provide justification to the NRC staff (via the                  Code Case 1540-2 (N-31) was acceptable subject Safety Analysis Report) why this is acceptable for              to the following conditions in addition to those their applications, including their evaluation of                conditions specified in the Code Case: Each ap- the susceptibility for stress corrosion cracking.              plicant who applies the Code Case should indi- cate in the referencing Safety Analysis Report N-397          02-20-84    Alternative Rules to the Spec-              that the service life of the elastomer diaphragm
              02-20-87    tral Broadening Procedures of              should not exceed the manufacturer's recom- N-1226.3 for Classes 1, 2,                  mended service life. This recommended service and 3 Piping, Section III, Di-              life should not exceed 1/3 of the minimum cycle vision 1                                    life as established by the requirements of para- Code Case N-397 was acceptable subject to the                    graph 3 of the Code Case. In addition, the serv- following condition in addition to those condi-                  ice life of the elastomer diaphragm should not tions specified in the Code Case. The Code Case                  exceed 5 years, and the combined service and is acceptable for specific plant applications on a              storage life of the elastomer diaphragm should case-by-case basis pending revision of Regulatory                not exceed 10 years.
 
Guide 1.122, "Development of Floor Design Re- sponse Spectra for Seismic Design of Floor-                  1541-1      08-13-73  Hydrostatic Testing of Em- Supported Equipment or Components.                                      09-30-76  bedded Class 2 and Class 3 Piping for Section III Con- N-413          02-14-85    Minimum Size of Fillet Welds struction
              02-14-88    for Subsection NF Linear
                                                                  1541-2      09-30-76  Hydrostatic Testing of Em- Type Supports, Section III,
                                                                                05-15-78  bedded Class 2 and Class 3 Division I
                                                                                          Piping for Section III, Divi- N-421          02-14-85    Brazing Using a Radiant En-                                   sion 1 Construction
              05-19-85    ergy Source, Section III, Divi-
                                                                  1552        12-18-72  Design by Analysis of Section
              06-30-86    sion 1
                                                                                08-29-77  III, Class 1 Valves
      3. Code Cases that were endorsed by the NRC in              1553        12-18-72    Upset Heading and Roll a prior version of this guide and were superseded by                            03-03-75  Threading of SA-453 for Bolt- revised Code Cases on or after July 1, 1974, should                                        ing, Section III
be considered as not endorsed as of the date of the                1555        12-18-72    Certification of Safety Relief ASME action that approved the revised version of                                01-14-77  Valves on Liquids the Code Cases. These Code Cases that are no longer                1606        11-05-73    Stress Criteria for Section III,
endorsed are listed in the following by number,                                12-16-74    Class 2 and 3 Piping Sub- effective dates, 14 and title.                                                            jected to Upset, Emergency, and      Faulted    Operating
15081s        12-13-71    Allowable Stresses, Design In-                                  Conditions
                06-30-75    tensity and/or Yield Strength Code Case 1606 was acceptable subject to the Values, Section I, 11, and                interpretation that the stress limit designations of VIII, Divisions 1 and 2
                                                                      "Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant
    '"Earlier date-date Code Case was approved by ASME;
later date-dale revision of Code Case was approved by                  conditions applicable to ASME Code Class 2 and ASME.                                                                  3 components for fluid systems. These designa-
    15Code Case 1508 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceptable            tions should be established and justified in the listing.                                                              design specifications.
 
1.84-13
 
1607         11-05-73  Stress Criteria for Section Ill,    N-62-5      07-24-89  Internal and External Valve
            11-04-74  Classes 2 and 3 Vessels Sub-                      12-11-89  Items, Section III, Division 1, jected to Upset, Emergency,                                 Class 1, 2 and 3 and Faulted Operating Condi-                                                                It Code Case N-62-5 was acceptable subject to the tions following condition in addition to those condi- Code Case 1607 was acceptable subject to the                tions specified in the Code Case: The Code re- interpretation that the stress limit designations of        quires that Class 1 and Class 2 valve manufactur-
    "Upset," "Emergency," and "Faulted" do not                  ers meet the provisions of NCA 4000, "Quality necessarily imply agreement with specified plant            Assurance," and, in addition, Class 3 valve conditions applicable to ASME Code Class 2 and              manufacturers should also meet the provisions of
    3 components for fluid systems. These designa-              NCA 4000.
 
tions should be established and justified in the design specifications.                                  1630        11-04-74  External Pressure Charts for (N-77)      07-10-78  High Yield Strength Carbon Steels and Low Alloy Steels.
 
1609-1      03-01-76  Inertia and Continuous Drive                                (Yield strength above 38 Ksi (N-55)      08-28-78  Friction Welding, Section I;                                to 60 Ksi Inclusive.) For Sec-
            07-13-81  III, IV, VIII, Division 1 and                                tion III, Class 1, 2, 3, and
            04-05-84  2, and IX                                                    MC; and Section VIII, Divi-
1621-2      05-25-77  Internal and External Valve                                  sion 1 and 2 (N-62-2)    05-15-80  Items, Section III, Division 1,      1683        03-03-75  Bolt Holes for Section III, Di-
            05-25-83  Class 1, 2 and 3 Line Valves                     03-01-76  vision 1, Class 1, 2, 3 and MC
            07-18-85                                                                Component Supports
                                                            1689        06-30-75  Alternate PWHT Time and Code Case 1621-2 (N-62-2) was acceptable sub-
                                                                          09-10-76  Temperature      for    SA-182 ject to the following condition in addition to Grade F22 Section III, Class those conditions specified in the Code Case: The
                                                                                    1, 2, 3 and CS
    Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000,              Code Case 1689 was acceptable subject to the
    "Quality Assurance," and, in addition, Class 3              following condition in addition to that specified valve manufacturers should also meet the provi-              in the Code Case: The alternate postweld heat sions of NCA 4000.                                          treatment should be prequalified along with the applicable welding procedure in accordance with ASME Section IX.
 
N-62-3      07-18-85  Internal and External Valve
            .09-05-85  Items, Section Il, Division 1,
                                                            1695        04-28-75  Brazing, Section III, Class 3 Class 1, 2 and 3 Line Valves
                                                                          11-03-75 Code Case N-62-3 was acceptable subject to the          1701        06-30-75  Determination of Capacities following condition in addition to those condi-                      03-20-78  of Vacuum Relief Valves Sec- tions specified in the Code Case: The Code re-                                  tion III, Class MC
    quires that Class 1 and Class 2 valve manufactur-        1701-1      03-20-78  Determination of Capacities ers meet the provisions of NCA 4000, "Quality            (N-95-1)    03-19-79  of Vacuum Relief Valves, Assurance," and, in addition, Class 3 valve                          07-09-79  Section III, Division 1 and manufacturers should also meet the provisions of                                2, Class MC
    NCA 4000.                                                1702        06-30-75  Flanged Valves Larger than
                                                                          07-11-77  24 inches for Section III,
                                                                                    Class 1, 2 and 3 Construc- N-62-4      09-05-85  Internal and External Valve                                  tion
            07-27-88  Items, Section III, Division 1,      1720        08-11-75  Weld End Preparation for
            07-24-89  Class 1, 2 and 3                                  03-01-76  Section III, Division 1 Con- struction Code Case N-62-4 was acceptable subject to the following condition in addition to those condi-              Code Case 1720 was acceptable subject to the tions specified in the Code Case: The Code re-              following condition in addition to those condi- quires that Class 1 and Class 2 valve manufactur-            tions specified in the Code Case: Weld end ers meet the provisions of NCA 4000, "Quality                preparations other than those shown in Figures Assurance," and, in addition, Class 3 valve                  1, 2, and 3 of the Code Case are not acceptable manufacturers should also meet the provisions of            on a generic basis. Such alternative end prepara- NCA 4000.                                                    tions should be treated on a case-by-case basis.
 
1.84-14
 
1720-1        03-01-76    Weld End Preparation for                    Code Case 1780 was acceptable subject to the
              11-20-78    Section III, Division 1 Con-                following conditions in addition to those condi- struction                                  tions specified in the Code Case: Each licensing Code Case 1720-1 was acceptable subject to the                  application in which the Code Case is to be used following condition in addition to those condi-                should present information that satisfactorily tions specified in the Code Case: The acceptance                demonstrates that the subassembly tests ade- of weld end preparations other than those shown                quately simulate the pressure loadings. Also, the in Figures 1, 2, and 3 of the Code Case should                  closure fixture for the test subassembly should be evaluated on a case-by-case basis.                            adequately simulate the rigidity of adjacent sub- assemblies and also simulate the interface load-
1739-2        08-28-78    Pump Internal Items, Section                ings from adjacent subassemblies that would re- (N-119-2) 08-25-80        III, Division 1, Class 1, 2,                sult from a hydrostatic pressure test of a and 3                                      complete pump assembly. As a minimum, the
1739-3        08-25-80 Pump Internal Items, Section                  closure fixture should impose loads that result in (N-119-3) 11-17-80 III,Division 1, Class 1, 2,                        stresses equal to or greater than those induced and 3                                      during the hydrostatic test of a complete pump
1739-4       02-20-8416 Pump Internal Items, Section                  assembly. It is not intended that piping reaction (N- 119-4) 07-18-85 III, Division 1, Class 1, 2,                      loadings be simulated in the hydrostatic testing.
 
and 3 N-119-5      07-18-85 Pump Internal Items, Section            1783          09-10-76    Qualification of Nondestruc-
              09-05-85 III, Division 1, Class 1, 2,                            01-14-77    tive Personnel, Section III,
                          and 3                                                            Division 1
1745          03-01-76 Stress Indices for Structural                  Code Case 1783 was acceptable subject to the (N-122)      01-08-79 Attachments, Class 1, Sec-                      following condition in addition to those condi-
              01-21-82 tion III, Division 1                          tions specified in the Code Case: The first sen-
              01-21-85                                                tence of paragraph (1) should be replaced with
              01-21-88                                                the following: "The certification of the Level III
              07-24-89                                                nondestructive examination personnel for the
1761          04-26-76 Use of SB-148 Alloy CA954                      purposes of this Section of the Code shall be the
              01-14-77 for Section III, Division 1,                    responsibility of the employer of the Level III in- Class 2 or 3 Flanged End                    dividual. If the employer is not a Certificate Valves                                      Holder, then the verification of such certificate is
1761-1        01-14-77    Use of SB-148 Alloy CA954,                the responsibility of the Certificate Holder."
(N-133)      01-07-80    Section III, Division 1, Class 3
              04-02-82                                          1791          03-17-8017  Projection Resistance Welding N-133-1      04-02-82    Use of SB-148 Alloys 952 and        (N-154)        09-09-82    of Valve Seats, Section III,
              05-19-85    954, Section III, Division 1,                      09-05-85    Division 1, Class 1, 2 and 3 Class 3                                              12-05-85    Valves N-133-2      05-19-85.    Use of SB-148 Alloys 952 and        1797          03-23-77    Finned Tubing for Construc-
              07-18-85    954 Section III, Division 1,        (N-160)        03-17-80    tion, Section III, Division 1 Class 3                                            09-07-82
1769          08-13-76    Qualification of NDE Level                          07-18-85
              02-16-77    III Personnel, Section III, Di-      N-192          01-09-78    Use of Flexible Hose for Sec- vision 1                                            08-30-79    tion III, Division 1, Class 1, 2,
1774          08-13-76    Minimum Wall Thickness for                                      and 3 Construction
              07-11-77    Class 2 and 3 Valves, Section              Code Case N-192 was acceptable subject to the III, Division 1                            following conditions in addition to those condi-
1780          09-10-76    Hydrostatic    Testing    and            tions specified in the Code Cas
 
====e. The applicant====
              03-10-78    Stamping of Pumps for Class 1              should indicate system application, design and Construction, Section III, Di-              operating pressure, and pressure-temperature vision 1                                    rating of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/
  '6 The Code Case was annulled on December 1, 1983                7
                                                                    ' The Code Case was annulled on January 14, 1980
(ASME mandatory annulment date). It was reinstated on Feb-      (ASME mandatory annulment date). It was reinstated on ruary 20, 1984. Because of the circumstances and because        March 17, 1980. Because of the circumstances and because there were no changes in the Code Case, the NRC considers        there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 12-1-83        that this Case was in effect during the period of 1-14-80
through 2-20-84.                                                through 3-17-80.
 
1.84-15
 
under regulatory position C.1 acceptable for                    3. Components ordered to a Code Case that was appropriate use. Other Code Cases may be                  previously approved for use need not be changed considered for use in accordance with footnote 6 of        because the Code Case has been subsequently the Codes and Standards rule, §50.55a of 10 CFR            annulled.
 
Part 50.                                                        4. Code Cases on the approved list may be applied to components that were in process of
    2. Components ordered to a specific version of a      construction prior to the effective date of the Code Code Case need not be changed because a                    Case within the limits specified in the Code Case and subsequent revision to the Code Case is listed as the      applicable regulations or recommended in other approved version in this guide.                            regulatory guides.
 
1.84-18


APPENDIX
APPENDIX
                NUMERICAL LISTING OF CODE CASES
          NUMERICAL LISTING OF CODE CASES
N-31-1                       N-284              N-395 N-62-6                        N-292              N-410
  1361,2                1541-1           1623
N-106-2 (1720-2)              N-304-4            N-411-1 N-119-6                      N-309-1            N-412 N-133-3                      N-313 N-414 N-154-1                      N-315 N-420
  14610i                1552            1625
N-155-2 (1792-2)              N-316 N-430
  147&.2                 1553            1633
N-160-1                       N-318-4 N-433 N-192-2                      N-319-1 N-442 N-196-1                       N-345-1 N-215                                            N-452 N-368 N-240                        N-369              N-453-1 N-241                        N-391-1           N-454 N-243                        N-392-1            N-455 N-247                        N-393              N-464 N-262                        N-394              N-476 THIS DOCUMENT WAS PRINTED USING RECYCLED PAPER
    1471-I                1555            1635-1
                              1-84-19
  1477,1                 1569            1636-1
    1494,1               1573            1651
    1506                  1574
    1508                  1580-1
    1516,1               1581
*  1533                  1588
    1535-2              .1606
    1536                  1607


UNITED STATES                                  FIRST CLASS MAIL
* 1539                  1614
NUCLEAR REGULATORY COMMISSION                        POSTAGE AND FEES PAID
     1540.I                1620
     WASHINGTON, D.C. 20555                                    USNRC
                                                  1.84-5}}
                                                          PERMIT NO. G-67 OFFICIAL BUSINESS
    PENALTY FOR PRIVATE USE, $300
                                          .1 IbA
                                        kUp  c)s F
                                    EP            Gc c')}}


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Revision as of 00:17, 20 March 2020

Code Case Acceptability ASME Section III Design and Fabrication
ML13350A351
Person / Time
Issue date: 06/30/1974
From:
US Atomic Energy Commission (AEC)
To:
References
RG-1.084
Download: ML13350A351 (5)
v • d • e


June 1974 U.S. ATOMIC ENERGY COMMISSION

0 REGULATORY

DIRECTORATE OF REGULATORY STANDARDS

GUIDE

REGULATORY GUIDE 1.84 CODE CASE ACCEPTABILITY

ASME SECTION III DESIGN

AND FABRICATION

A. INTRODUCTION

tested to the highest quality standards practical. Ap- pendix B, "Quality Assurance Criteria for Nuclear Power Section 50.55a, "Codes and Standards," of 10 CFR Plants and Fuel Reprocessing Plants," to 10 CFR Part 50.

Part 50, "Ucensing of Production and Utilization requires, in part, that measures be established for the Facilities," requires, in part, that components of the control of special processing of materials and that proper reactor coolant pressure boundary be designed, fabri- testing be performed. This regulatory guide lists those cated, erected, and tested in accordance with the Section III ASME Code Cases oriented to design and requirements for Class I components of Section III, fabrication which are generally acceptable to the AEC

"Nuclear Power Plant Components,"i of the American Regulatory staff for implementation in the licensing of Society of Mechanical Engineeri (ASME) Boiler and light-water-cooled nuclear power plants.

Pressure Vessel Code or equivalent quality standards.

Footnote 6 to Section 50.55a states that the use of

B. DISCUSSION

specific Code Cases may be authorized by the Commis- sion upon request pursuant to §50.55a(a)(2Xii) which The Boiler and Pressure Vessel Committee of the requires that proposed alternatives to the described ASME publishes documents entitled "Interpretations of requirements or portions thereof provide an acceptable the ASME Boiler and Pressure Vessel Code." t These level of quality and safety. General De--ign Criterion 1, documents, referred to as "Code Cases," explain the

"Quality Standards and Records," of Appendix A, intent of Code rules or provide Code permission to use

"General Design Criteria for Nuclear Power Plants," to alternative requirements under special circumstances or

10 CFR Part 50 requires, in part, that structures, with suitable precautions. Most Code Cases are even- systems, and components important to safety be de- tually superseded by revision to the Code and then are signed, fabricated, erected, and tested to quality stand- annulled by action of the ASME Council.

ards commensurate with the importance of the safety

.function to be performed. Where generally recognized The Code Cases listed in this guide are limited strictly codes and standards are .used, Criterion I requires that to those applicable to Section III which are oriented

  • they be identified and evaluated to determine their toward design and fabrication.

applicability, adequacy, and sufficiency and be supple- mented or modified as necessary to assure a quality All published Code Cases in the area of design and product in keeping with the required safety function. fabrication which are applicable .to Section III of the C*.terion 30, "Quality of Reactor Coolant Pressure Code and were in effect on November 5, 1973 were Boundary," of the same appendix requires, in part, that reviewed for inclusion in this guide. Code Cases which components which are part of the reactor coolant are not listed herein are either not endorsed or will pressure boundary be designed, fabricated, erected, and require supplementary provisions on an individual basis to attain endorsement status.

ICopies may be obtained from the American Society of Mechanical Engineers, United Enginecering Center, 345 East The endorsement of a Code Case by this guide

47th Street, New York, N.Y. 10017. constitutes acceptance of its technical position for USAEC REGULATORY GUIDES Copies of published guides may be obtained by request indicating the divisions desired to the US. Atomic Energy Commission, Washington. D.C, 20545.

Regulatotyý Guides are issued to desoibe and make avoilable to the public Attention: Director of Regulatory Standards. Comments and suggestions for methods accptable to the AEC Regulatory stoff of Implementing specific pents of improvements In these guides are encouraged and should be sent to the Secretary the Commissioe's regulations, to delineate techniques v,,edby the staff in of the Commission, US. Atomic Energy Commission, Wtshington, D.C. 20545, evaluating specific prob;ems or postulated accidents, or to provide guidsnce to Attention: Chief. Public Proceedings Staff.

apolicants. Regulatoty Guides are not substitutes for regulations and compliance with them is not required. Methods end solutions different from those set out in The guides are issued in th" following ten broad divisions:

the guides will be acceptable If they provide a basis for the findings requisite to the issuance or continuance of a permit or license by the Commission, 1. Power Reachors

6. Products

2. Research end Test Resictoct

7. Transportation

3. Fuets and Materials Fecilities 8. Occupational Health Published guides will be revised periodically, asappropriate, to accommodate 4. Environmental and Siting 9. Antitrust Review comments and to reflect new Information or experience, S. Materials and Plant Protection 10, General

applications not precluded by regulatory or other (2) Code Cases Applicable to Valve Design requirements or by the recommendations in this or other regulatory guides. Contingent endorsement is indicated 1533 6-14-72 Pressure Temperature Ratings of in Regulatory Position C.l.c for specific cases; however SA-35 1 Grades CF8A, CF3, and

  • it is the responsibility of the user to make certain that CF3M,Section III

no regulatory requirements are violated and that there 1534 11.6-72 Overpressurization of Valves, are no conflicts with other recommended limitations Section III

resulting from Code Case usage. 1539 11-6-72 Metal Bellows and Metal Dia- phragm Stem Sealed Valves, Sec- The acceptance or endorsement by the Regulatory tion II, Classes 1, 2, and 3.

staff applies only to those Code Cases or Code Case 1540-1 3-3-73 Elastomer Diaphragm Valves Sec- revisions with the date of "Council Approval" as shown tion i11, Classes 2 and 3 in the Regulatory Position of this guide. Earlier or later 1552 12-18-72 Design by Analysis of Section III

revisions of a Code Case are not endorsed by this guide. Class I Valves New Code Cases as they are issued or future revisions of 1555 12-18-72 Certification of Safety Relief existing Code Cases will require evaluation by the Valves on Liquids Regulatory staff to determine if they qualify for 1573 4-30-73 Vacuum Relief Valves, Section inclusion in the approved list. Because of the continuing Ill change in the status of Code Cases, it is planned that this 1574 4-30-73 Hydrostatic Test Pressure for guide will require periodic updating to accommodate Safety Relief Valves,Section III,

new Code Cases and any revisions of existing Code Classes 1, 2, and 3 Cases. 1581 6-25.73 Power-Operated Pressure Relief Valves Section 11I,Class I

C. REGULATORY POSITION

(3) Other Code Cases Related to Design

1470-2 12-18-72 External Pressure Charts for

1. The Section III ASME Code Cases 2 listed in the High-Strength Carbon Steels and following by number, title, and date of Council approval for Low-Alloy Steels are a:ceptable to the Regulatory staff for application in 1508 12-13-71 Allowable Stresses, Design Stress the construction of components for water-cooled nu- Intensity, and/or Yield Strength clear power plants. Their use is acceptable within the Values of Section 1, II, and VIII,

limitations stated in the "Inquiry" and "Reply" sections Division I and 2 of each individual code case, such Regulatory or other 1536 8-14-72 Closing Seam for Electrical Pene- requirements as may exist, and the additional limitations tration for Section III, Classes 2, recommended by the Regulatory, staff given with the 3, and MC

individual code cases in the list. 1575 4-30-73 Hub-to-Flange Fillet Radius for Bolted Flanges with Nut Stop a. Design-Oriented Code Cases With Title and Date of 1607 11-5-73 Stress Criteria for Section III,

Council Approval C(lasses 2 and 3 Vessels Subjected

(1) .Code Cases Applicable to Piping Design to Upset, Emergency, and Faulted Operating Conditions

1477-1 3-9-72 Use of 1970 Addenda of ANSI

B31.7 "Nuclear Power Piping" b. Fabrication-Oriented. Code Cases with Dates of

1506 12-13-71 Stress Intensification Factors, Council Approval Section I11,Class 2 & 3 Piping (1) Code Cases Related to Welding

1601 11-5-73 Limits of Reinforcement for Two-thirds Area,Section III 1461 3-9-72 Electron Beam Welding, Sections Class 1 1,111, VIII

1606 11-5-73 Stress Criteria for Section III 1471-1 3.9-72 Vacuum Electron Beam Welding Classes 2 and 3 Piping Subjected of Tube Sheet Joints to Upset, Emergency, and 1494-1 3-3-73 Weld Procedure Qualification Faulted Conditions Tests,Section III

1614 11-5-73 Hydrostatic Testing of Piping 1516-1 6-25-73 Welding of Seats in Valves for Prior to or Following the Instal- Section III Applications lation of Spray Nozzles for Sec- 1554 3-3-73 Post-weld Heat Treatment of tion I11, Classes 1, 2, and 3 P-number 1 and P-number 12A,

Piping Systems Subgroup 1 Longitudinal Welds,Section III Classes 1, 2, and 3

2These Code Cases are listed numerically in the Appendix to this components guide. 1580.1 11-5-73 Figure NB4233-1(a),Section III

1.84-2

(2) Other Code Cases Related to Fabrication

D. IMPLEMENTATION

1535-2 4-30-73 Hydrostatic Testing of Section The following guidance is provided for the implemen-

111 Class I valves tation of Section III ASME Code Cases involving

1541-1 8-13.73 Hydrostatic Testing of Embed- materials and testing.

ded Class 2 and Class 3 Piping for Section III construction 1. The effective date of this guide is July 1, 1974.

155I 12-18-72 Upset Heading and Roll Thread- ing ol SA-453 for High-Tempera- 2. This listing of Code Cases is applicable after the ture Bolting,Section III, Classes effective date of this guide unless a particular Code Case

1, 2, 3, and MC has been annulled by action of the ASME Council.

1588 8-13-73 Electro-Etching of Section 111 Code Symbols

3. Components ordered to a specific version of a Code Case before the effective date of this guide need not be

.c. Code Cases with Contingent Approval changed because a subsequent revision to the Code Case is listed as the approved version in this guide.

1355.3 3-9-72 Electroslag Welding, Section 1, I11, and VIII, Division I and 2

4. Code Cases on the approved list may be applied to This code case is approved subject to the condi- components that were in process of construction prior tions established in Regulatory Guide 1.34, "Con- to the effective date of this guide within the limits trol of Electroslag Weld Properties." specified in the Code Case and applicable regulations or recommended in other regulatory guides.

1361 3-9-72 Socket Welds,Section III

5. Code Cases for Class 1 components which are not on This code case is approved when used in connec- the approved list of this guide or other regulatory guides, tion with Section Ill, paragraph NB-3356, Fillet or for which authorization by the Commission has not Welds. been granted, are not acceptable on a generic basis for Class I components. Special authorization may be

1569 3-3-72 Design of Piping for Pressure granted for individual cases upon special request to the Relief Valve Station Commission.

This code case is approved subject to the condi- 6. Code Cases for other Classes of components which tions established in Regulatory Guide 1.67, "In- are not on the approved list of this guide or other stallation of Overpressure Devices." regulatory guides, or for which authorization by the Commission has not been granted, should not be

2. Code Cases that are annulled by action of the ASME considered acceptable on a generic basis. Specialiauthori.

Council should be considered as deleted from the zation may be granted for individual cases upon special approved list as of the date of the ASME Council aclion. request to the Commission.

1.84-3

APPENDIX

Numerical Listing of Code Cases

1355-3 1541-1

1361-2 1552

1461-1 1553

1470-2 1554

1.471-1 1555

1477-1 1569

1494-1 1573

1506 1574

1508 1575

1516-1 1580.1

1533 1581

1534 1588

1535.2 1601

1536 1606

1539 1607

1540-1 1614

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APPENDIX

NUMERICAL LISTING OF CODE CASES

1361,2 1541-1 1623

14610i 1552 1625

147&.2 1553 1633

1471-I 1555 1635-1

1477,1 1569 1636-1

1494,1 1573 1651

1506 1574

1508 1580-1

1516,1 1581

  • 1533 1588

1535-2 .1606

1536 1607

  • 1539 1614

1540.I 1620

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