ML20206S960

Rev 24 to Reg Guide 1.84, Design & Fabrication Code Case Acceptability,Asme Section III Div 1

ML20206S960
Person / Time
Issue date:	06/30/1986
From:	NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:
References
REGGD-01.084, REGGD-1.084, NUDOCS 8607070460
Download: ML20206S960 (14)

Text

r hk Revision 24

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U.S. NUCLEAR REGULATORY COMMISSION June 1988

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3 REGULATORY GUIDE (Vl

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OFFICE OF NUCLEAR REGUI.ATORY RESEARCH REGULATORY GUIDE 1.84 DESIGN AND FABRICATION CODE CASE ACCEPTABILITY ASME SECTION 111 DIVISION 1 A. INTRODUCTION Part 50 requires, in part, that measures be established for the control of special processing of materials and that Section 50.55a, " Codes and Standards," of 10 CFR proper testing be performed.

Part 50, " Domestic Licensing of Production and Utiliza-tion Facilities," requires, in part, that components of the This regulatory guide lists those Section til ASME Code reactor coolant pressure boundary be designed, fabri-Cases oriented to design and fabrication that are generally cated, erected, and tested in accordance with the require-acceptable to the NRC staff for implementation in the ments for Class I components of Section 111, " Nuclear licensing of light-water-cooled nuclear power plants.

Power Plant Components,"3 of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Any information collection activities mentioned in this Code or equivalent quality standeds. Footnote 6 to regulatory guide are contained as requirements in 10 CFR

@50.55a states that the use of specific Code Cases may Part 50, which provides the regulatory basis for this guide.

be authorized by the Commission upon request pursuant The information collection requirements in 10 CFR Part 50 to 50.55a(a)(2)(ii), which requires that proposed alter-have been cleared under OMB Clearance No. 3150 0011.

natives to the described requirements or portions thereof provide an acceptable level of quality and safety.

B. DISCUSSION General Design Criterion 1, " Quality Standards and The ASME Boiler and Pressure Vessel Committee (N

Records," of Appendix A, " General Design Criteria for publishes a document entitled " Code Cases."I Generally,

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Nuclear Power Plants," to 10 CFR Part S0 requires,in part, the individual Code Cases that make up this document

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that structures, systems, ano components important to explain the intent of Code rules or provide for alter-safety be designed, fabricated, erected, and tested to qual-native requirements under special circumstances.

ity standards commensurate with the importance of the safety function to be performed.Where generally recognized Most Code Cases are eventually superseded by revision to codes and standards are used, Criterion I requires that they the Code and then are annulled by action of the ASME Council.

be identified and evaluated to determme their applicability, in such cases, the intent of the annullai Code Case bemmes part adequacy, and sufficiency and be supplemented or modified of the revisal Code, and therefore continued use of the Cbde as necessary to ensure a quality product in keeping with the Case intent is sanctioned under the rules of the Code. In orher required safety function.

cases, the Code Case is annulled because it is no longer accept-

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able or there is in further requirement forit. ACode Case that Criterbn 30,"Qualityof ReactorCoolantPressure Bound-was approved for a particular situation arxl not for a generic m

ary," of the same appendix requires, in part, that compo-application should be used only for mnstruction of the approved O Q nents that are part of the reactor coolant pressure boundary situation treause annulment of such a Code Case muld resu.t in a

be designed, fabricated, erected, and tested to the highest construction that would not meet Code requirements.

O quality standards practical.

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The Code Cases listed in this guide are limited to those Appendix B, " Quality Assurance Criteria for Nuclear cases applicable to Section ill that are oriented toward 00 me Power Plants and Fuel Reprocessing Plants," to 10 CFR design and fabrication.

ecz E gdee,In d En in eri g C nt, $"4 5 a

7th All published Code Cases in the area of design and Mech c h Street, New Yofk, New York 10017.

fabrication that are applicable to Section til of the Ccde O

om.

ho USNRC REGULATORY GUIDES The guides are issued in the following ten broad divisions:

Regulatory Guides are issued tu describe and make available to the public methods acceptable to the NRC staff of 6mplementing

1. Power Reactors

6. Produc ts specific parts of the Commission s regulations, to delineate tech-

2. Research and Test Reactors

7. Transportation ted acc dent 5

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t or Id u ance to app i ts, u a ory on en a Si Att st an n ncial Rev6ew (O

Pn".'?n*fs et rduJ"!"Jefn*2d' 'ns's'A'tYo"s'da"e"re'f*,t',L'TntsM'e" 5"*""""""'"''""2-a d

out in the guides will be acceptable if they provide a basis for the

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findings requisite to the isstance or continuance of a permit or Copies of issued guides may be purchased from the Governmert

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license by the Commission, r tl Office at h c ent G price. Informat n

rer This guide was issued afterconsideration of comments received from Documents, U.S. Government Printing O fice. Post Office Bcx the public. Comments and suggestions for improvements in these 37082, Washington, DC 20013-7082, telephone (202)275 2060 or guides are encouraged at all times, and guides will be revised, as (202)275 2171.

appropriate, to accommodate comments and to reflect new informa-tion or expertence.

Issued guides may also be purchased from the National Technical hr nc'n, YRR tained by wrl ing th ya$R U.

ear R gu atory omrn ss serv c be 58 Port 4 a

Washington, Od 20555.

Springfield, VA 22161.

1

] and were in effect on May 20, 1985, were reviewed for 1745 03-01-76 Stress Indices for Structural Attach-inclusion in this guide. In addition to the listing of (N-122) 01-08-79 ments, Class l, Section Ill, Division I acceptable Code Cases, this revision of the guide includes 01-21-82 listings of (1) Code Cases that were identified as accept-01-21-85 able in a prior version of this regulatory guide and that 1797 03-23-77 Finned Tubing for Construction, were annulled after the original issuance of this guide (N-160) 03-17-80 Section III, Division I (June 1974) and (2) Code Cases that were identified as 09 07-82 acceptable in a prior version of this regulatory guide and that were superseded by revised Code Cases after (2) Code Cases applicable to valve design:

the original issuance of this guide (June 1974) Code Cases that are not listed herein are either not endorsed N-133-2 05-19-85 Use of SB-148 Alloys 952 and 954 l or will require supplementary provisions on an individual Section III, Division 1, Clan 1 basis to attain endorsement status.

N-282 05-15-80 Nameplates for Valves, SectionIII, 05-25-83 Division 1, Class 1,2, and 3 Con-The endorsement of a Code Case by this guide struction constitutes acceptance of its technical position for N-313 05-11-81 Alternate Rules for llalf-Coupling applications not precluded by regulatory or other require-I l-28-83 Branch Connections,Section III, ments or by the recommendations in this or other Division 1 5

regulatory guides. Contingent endorsement is indicated N-394 02-20-84 Restricting Lift to Achieve Reduced in regulatory position C.I.c for specific cases. Ilowever, Relieving Capacities of Full Lift, it is the responsibility of the user to make certain that Nozzle Type, and Flat Seated no regulatory requirements are violated and that there Safety and Safety Relief Valves are no conflicts with other recommended limitations for Compressible Fluid Applica-resulting from Code Case usage.

tions,Section III, Division 1,

Classes 2 and 3 Acceptance or endorsement by the NRC staff applies N-410 12-05-84 Cer tified Relieving Capacities of only to those Code Cases or Code Case revisions with Pressure Relief Valves llaving Set the date of " Council Approval" as shown in the regu-Pressure of 3 psig up to but Not latory position of this guide. Earlier or later revisions of including 15 psig Installed for Over-a Code Case are not endorsed by this guide. New Code pressure Protection of Compressible Cases will require evaluation by the NRC staff to Fluid Systems,Section III, Divi-determine if they qualify for inclusion in the approved sion I, Classes 2 and 3 list. Because of the continuing change in the status of Code Cases, it is planned that this guide will require (3) Other Code Cases related to design:

periodic updating to accommodate new Code Cases and any revisions of existing Code Cases.

1630-1 12-11-814 External Pressure Charts for fligh (N-66-1 )

12-05-84 Yield Strength Carbon Steels and l C.

REGULATORY POSITION Low Alloy Steels. (Yield Strength above 38 Ksi to 60 Ksiinclusive.)

1. The Section Ill ASME Code Cases 2 listed below Section 111, Division 1, Class 1, 2, (by number, date of Council approval, and title) are 3, and MC acceptable to the NRC staff for application in the con-1739-4 02-20-845 Pump Internal Items,Section III, struction of components for light-water-cooled nuclear (N-119-4)

Division 1, Class 1, 2, and 3 power plants. Their use is acceptable within the limitations N-196-1 01-08-79 Exemption from the Shakedown stated in the " Inquiry" and " Reply" sections of each 01-21-82 Requirements When Plastic Analy-individual Code Case, within the hmitations of such 01-21-85 sis is Performed for SectionIII Divi-l NRC or other requirements as may exist, and within the sion 1, Class I and CS Construction additional limitations recommended by the NRC staff N-243 08-30-79 Boundaries Within Castings Used for given with the individual Code Case in the listing. The 07-16-82 Core Support Structures, Section Ill, categorization of Code Cases used in this guide is 05-19-85 Division 1, Class CS l

intended to facilitate the Code Case listing and is not N-247 07-09-79 Certified Design Report Sumnary for intended to indict.te a limitation on its usage.

01-21-82 Component Stanird Supports, Sec-01-21-85 tion III, Division 1. Class 1, 2, 3 l

a. Design-oriented Code Cases (Code Case number, date of Council approval,3 and title):

41he Code Case was annulled on July 10,1981 (ASME manda-(1) Code Cases applicable to piping design tory annulment date). It was reinstated on December it,1981.

Because of the circumstances and because there were no changes Lines indicate substantive changes from Revision 23.

hfect dur ng the ti o

10 81 t ugh 12 11 81 A numerical listing c4 the Code Cases appears in the appendix.

5The Code Case was annulled on December 1,1983 (ASME 3% hen more than one date is given, the earlier date is that mandatory annulment date). It was reinstated on February 20, on which the Code Case was approved by the ASME Council 1984. Because of the circumstances and because there were no and the later date(s) is that on w hich the Code Case was changes in the Code Case, the NRC considers that this Case was reaffirmed by the ASME Council.

in effect during the period of 121-83 through 2 20-84.

1.84-2

6 N-309 09-17-84 Identification of Materials for Can-N-412 04-15-85 Alternative Rules for Witnessing 7m ponent Supports, Section Ill, Divi-the Piping System Pressure Tests

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sion 1 of Classes 1, 2, and 3 Piping C/

N-319 07-13-81 Alternate Procedure for Evaluation Systems,Section III, Division 1 07-13-84 of Stresses in Butt Weld Elbows in N-420 02-14-85 Linear Energy Absorbing Supports Class 1 Piping, Section 111, Divi-for Subsection NF, Classes 1, 2, sion 1 and 3 Construction,Section III, N-341 06-17-82 Certification of Level til NDE Division 1 05-19-85 Examiner, Section 111, Division I and 2 Code Case N-420 is acceptable subject to the fol-N-397 02-20-84 Alternative Rules to the Spectral lowing conditions in addition to those conditions

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Broadening Procedures of N-1226.3 specified in the Code Case. Each applicant desiring to for Classes 1, 2, and 3 Piping use the Code Case should provide the following Section 111, Division 1 information prior to implementing the Case: (1) indica-i tion of systems in which energy-absorbing supports are Code Case N-397 is acceptable subject to the" follow-to be used, (2) fatigue design, (3) piping system anal-ing condition in addition to those conditions speci-ysis results considering inelastic behavior of supports, fied in the Code Case. The Code Case is acceptable and (4) plans for inservice examination of energy for specific plant applications on a case-by-case basis absorbers.

pending revision of Regulatory Guide 1.122, "Devel-opment of Floor Design Response Spectra for Seismic

b. Fabrication-oriented Code Cases:

Design of Floor-Supported Equipment or Components."

(1) Code Cases related to welding and brazing:

N-411 09-17-84 Alternative Damping Values for Seismic Analysis of Classes 1, 2, N-55-1 04-05-84 laertia and Continuous Drive Fric-and 3 Piping Sections, Section 111, tion Welding, Section Ill, Divi-Division I sion 1 7

1791 03-17-80 Projection Resistance Welding of Code Case N-411 is acceptable subject to the fol-(N-154) 09-09-82 Valve Seats,Section III, Division 1,

f. m lowing conditions in addition to those conditions Class I, 2 and 3 Valves

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specified in the Code Case: (1) The damping values N-217-1 01-07-80 Postweld lleat Treatment of Weld

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specified may be used in analyzing piping response 09-07-82 Deposit Cladding on Classes 1, 2,3, for seismic and other dynamic loads being filtered 12-05-84 MC, and G ltems,Section III, Divi-through building structures provided response mode sion I frequencies are limited to 33 Itz and below. Within N-229 01-08-79 Alternate Rules for Fabrication this range, the Code Case damping should be used 01 2'-82 Welding SB-148 Alloy CDA 954 for completely and consistently, if used at all. (For equip-01-21-85 Section III, Division 1, Class 3 ment other than piping, the damping values specified Construction in Regulatory Guide 1.61, " Damping Values for N-233 01-08-79 Alternate Rules for PWitT of P-No.

Seismic Design of Nuclear Power Plants," should be 01-21-82 6, Group 4 Material for Section Ill, used.) (2) The damping values specified may be used 09-17-84 Division t, Qassi,2,'or 3 Construc-l

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only in those analyses in which current seismic spectra tion and procedures have been employed. Such use should N-260 01-07-80 Weld Repair of SA-182 Type 316 be limited only to response spectral entlyses (similar to 05-25-83 Forgings, Section 111, Division

.1, that used in the study supporting its acceptance - Refer-Classes I, 2, 3, and MC ence NUREG/CR-3526). The acceptance of the use with N-262 01-07-80 Electric Resistance Spot Welding other types of dynamic analyses (e.g., time-history anal-09-07-82 for Structural Use in Component l

ysis) is pending further justification. (3) When used Supports, Section Ill, Division 1 l

for reconciliation work or for support optimization of N-271 03-17-80 Simplified Method for Analyzing existing designs, the effects of increased motion on Flat Face Flanges with Metal to 4

existing clearances and on line mounted equipment Metal Contact Outside the Bolt should be checked. (4) This Code Case is not appro-Circle for Section III, Class 2,3, and priate for analyzing the dynamic response of piping MC Construction systems using supports designed to dissipate energy N-276 03-17-80 Welding of SA-358 Pipe,Section III, by yielding (i.e., the design of which is covered by 02-14-83 Division 1 Code Case N-420). (5) This Code Case is not appli-N-304-2 05-19-85 Use of SB-676 20Cr-25Ni-6Mo (Alloy cable to piping in which stress corrosion cracking has UNS N08366) Welded Tubes, Sec-l[,}

occurred unless a case-specific evaluation is made and tion III, Division I, Classes 2 and 3 I

is reviewed by the NRC staff.

6The Code Case was annutled on May 11,1984 (ASME manda-7The Code Case was annulled on January 14,1980 (ASME manda-tory annulment date). It was reinstated on September 17, 1984.

tory annulment date). It was reinstated on March 17,1980. Because Because or the circum.tances and because there were no changes of the circumstances and because there were no changes in the in the Code Case, the NRC considers that this Case was in effect Code Case, the NRC considers that this Case was in effect during during the period of s-1184 through 9-17-84.

the period of 1 14-80 through 3-17-80.

1.84-3

N-315 02-14-83 Repair of Bellows,Section III, N-413 02-14-85 hiinimum Size of Fillet Welds Division I for Subsection NF Linear Type Supports, Section 111, Division 1 Code Case N-315 is acceptable subject to the following conditions in addition to those conditions specified in (2) Other Code Cases related to fabrication:

the Code Case: Prior to implementation of the Code Case, the applicant should present a description of the N-215 05-15-78 Integrally Finned Titanium Tubes, repair and a justification why the bellows should be SectionIII, Division i, Class 3 Con-repaired rather than replaced. Following receipt of struction approval for the repair, but prior to making the repair, N-237-2 05-25-83 Ilydrostatic Testing of Internal the applicant should present the results of the quali-Piping, Section Ill, Division 1,

fication on the full-scale facsimile bellows, including Classes 2 and 3 the design requirements, to ensure that the repair N-240 03-19-79 Ilydrostatic Toting of Open Ended meets the requirements of the design specification.

01-21-82 Piping,Section III, Division 1 09-17-84 l

N-316 12-11-81 Alternate Rules for Fillet Weld N-241 07-09-79 Ilydrostatic Testing of Piping, Sec-l 09-17-84 Dimensions for Socket Welded 01-21-82 tion III, Division 1 Fittings,Section III, Division 1, 09-17-84 l

Class I, 2. and 3 N-362-2 07-12-84 Pressure Testing of Containment N-328 12-11-81 Thermit Brning or Welding of Items,Section III, Division 1,

l 09-17-84 N anstructur.1 Attachments, Sec-Classes 1, 2, and AIC tion 111, Division 1 N-368 07-06-83 Pressure Testing of Pump Discharge, N-345-1 12-13-82 Attachment of AhtS 5382 Alloy 31 Section III, Division 1, Classes 2 Seat Rings by Friction Welding, and 3 Section 111, Division 1, Classes 1, 2, and 3 Code Case N-368 is acceptable subject to the follow-N-346 06-17-82 Explosive Welding,Section III, ing condition in addition to those conditions speci-l 05-19-85 Division I fied in the Code Case: Applicants using this Code N-347 12-13-82 Continuous Electric Resistance Seam Case should provide information to demonstrate that Welding of P-No. 8 Materials for the length of discharge piping is reasonably short.

Component Supports, Section Ill, Division 1 N-369 02-14-83 Resistance Welding of Bellows, N-35 7 12-13-82 Certification of hiaterial for Compo-Section 111, Division 1 l

05-19-85 nent Supports,Section III, Divi-N-376 05-25-83 Pressure Testing of Embedded sion 1, Subsection NF Class 2 and 3 Piping, Section 111, N-383 10-05-83 Weld Repair of SA 182 Austenitic Division 1 Forgings,Section III, Division 1, N-421 02-14-85 Brazing Using a Radiant Energy Classes 1, 2, and 3 05-19-85 Source,Section III, Division 1 Code Case N-383 is acceptable subject to the following

c. Code Cases with contingent approval:

condition in addition to those conditions specified in the Code Case: Applicants who apply the provisions 1540-2 01-14-77 Elastomer Diaphragm Valves, See-of this Case to permit material manufacturers to weld (N-31) 01-07-80 tion III, Class 2 and 3 repair austenitic forgings without re-solution heat 02-14-83 treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable Code Case 1540-2 (N-31) is acceptable subject to the for their applications, including their evaluation of the following conditions in addition to those conditions susceptibility for stress corrosion cracking.

specified in the Code Case: Each applicant who applies the Code Case should indicate in the refer-N-391 11-28-83 Procedure for Evaluation of the encing Safety Analysis Report that the service life of Design of IIollow Circular Cross the elastomer diaphragm should not exceed the Section Welded Attachments on manufacturer's recommended service life. This recom-Qass 1 PipinF.Section III, Division 1 mended service life should not exceed 1/3 of the N-392 11-28-83 Procedure for Evaluation of the minimum cycle life as cstab!ished by the require-Design of IIollow Circular Cross ments of paragraph 3 of the Code Case. In addition, Section Welded Attachments on the service life of the elastomer diaphragm should Classes 2 and 3 Piping, Section IB, not exceed 5 years, and the combined service and Division I storage I!fe of the elastomer diaphragm should not l

N-393 11-28-83 Repair Welding Structural Steel exceed 10 years.

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Rolled Shapes and Plates for Com-ponent Supports,Section III, Divi-1621-2 05-25-77 Internal and External Valveltems, sion 1 (N-62-2) 05-15-80 Section Ill, Division 1, Class 1, 2 1.84-4

rw 05-25-83 and 3 Line Valves Code Case N-292 is acceptable subject to the following conditions in addition to those conditions specified in (J)

N Code Case 1621-2 (N-62-2)is acceptable subject to the the Code Case: Class 3 piping that is longitudinally following condition ci addson to taose conditions welded and that has a weld efficiency factor of 1.0 as i

specified in the Code Case: The Cr de requires that selected from Table ND-3613.4-1 should receive a 100 Class I and Class 2 valve manufacturers meet the percent volumetric examination (RT or IJr) of the provisions of NCA 4000, " Quality Assurance," and, deposited weld metal in accordance with the require-in addition, Class 3 valve manufacturers should also ments of ND-5000.

meet the provisions of NCA 4000.

N-318-2 07-12-84 Procedure for Evaluation of the 1720-2 11-20-78 Weld End Preparaticn fcr SectionlII, Design of Rectangular Cross Sec-08-28-81 Division 1 Construction tion Attachments on Class 2 or 3 l (N-106-2) 09-17-84 Piping, Section 111, Division 1 Code Case 1720-2 (N-106-2) is acceptable subject to Code Case N-318-2 is acceptable subject to the fol-the following condition in addition to those condi-lowing conditions in addition to those conditions tions specified in the Code Case: The acceptance of specified in the Code Case. Applicants should identify weld end preparations other than those shewn in in their Safety Analysis Report: (1) tir method of lug Figures 1, 2, and 3 of the Code Case should be attachment, (2) the piping system involved, and (3) the evaluated on a case-by-case basis.

location in the system where the Case is to be applied.

1792-2 01-08-79 Fiberglass Reinforced Thermosetting N-350 12-07-82 lbstweld lleat Treatment-Thickness (N-155-2) 01-21-82 Resin Pipe, Section 111, Division 1 of hfaterial,Section III, Divi-01-21-85 sion I l

Code Case 1792-2 (N-155-2) is acceptable subject to Code Case N-350 is acceptable subject to the follow-the following condition in addition to those condi-ing condition in addition to those conditions speci-tions specified in the Code Case: The applicant should fled in the Code Case: Applicants wishing to use this Case for other than P-1 materials should demon-o comply with the additional requirements that are f) specified in Regulatory Guide 1.72, " Spray Pond strate that the use of this Case will not adversely 1

Nj Piping Made from Fiberglass-Reinforced Thermosetting affect the required material properties.

Resin."

2. Code Cases that were endorsed by the NRC in a prior N-192-2 09-16-81 Use of Braided Flexible Connectors, version of this guide and were later annulled by action of l

09-17-84 Section 111, Division 1, Class 2 and 3 the ASME Council should be considered as deleted from the list of acceptable Code Cases as of the date of the ASME Code Case N-192-2 is acceptable subject to the following Council action that approved the annulment. Such Code conditions in addition to those conditions specified in Cases, which were annulled on or after July 1,1974, are the Code Case; The applicant should indicate system listed below by number, effective dates,s and title.'

application, design arid operating pressure, and pressure-temperature rating of the flexible hose. Data to demon-1361-2 03-09-72 Socket Welds, Section 111 strate compliance of the flexible hose with NC/ND-3649, 03-01-79 partiatlarly NC/ND 3649.4(e), are required to be furnished with the application.

Code Case 1361-2 was acceptable when used in connection with Section 111, paragraph NB-3356. Fillet Welds.

N-284 08-25-80 Metal Containment Shell Buckling 80 05-25-83 Design Methods, Section111, Divi-1461-1 03-09-72 Electron Beam Welding, Section 1, sion 1, Class MC 02-16-77 III, and Vill, Division I and 2 1470-2 '

12-18-72 External Pressure Charts for liigh-3

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J Code Case N-284 is acceptable subject to.the follow-I l-04-74 Strength Carbon Steels and for ing condition in addition to those conditions speci-fied in the Code Case: Prior to implementation of the Code Case, the applicant must demonstrate to 8 Earlier date-date Code Case was approved by ASME Council; later date-date Code Case was annulled. Where more than two the satisfaction of the NRC staff (via Safety Analysis dates appear, the last date is the date that the Code Case was Report) that any axisymmetric techniques that are annulled. The middle date (or dates) was the date of reaffirmation f the C de Case.

proposed will be applicable to a vessel having large 9 Code Cases 1355-3,1534, and 1s54, which were listed in asymmetric openings and that the overall margin used

[n) to prevent shell buckling is acceptable.

g r or50YuYy I'Y974.

10 Code Case 14611 is no Ion Case and is therefore deleted from t$er listed as a Sec e acceptable listing.

N-292 01-05-81 Depositing Weld Metal Prior to 11The annulment of Code Case 147o.2 was effective upon Il-28 83 Preparing Ends for Welding, Sec-Council approval of Code Case 1630 tiowever, because or an tion 111* Division 1* Class 1* 2' oversight, the annulment was not noted until publication of and 3 Construction Supplement No.13 to the 1974 Code Cases.

1.84-5

Low-Alloy Steels,Section VIII, the Code. It was, therefore, acceptable but unnecessary Division I and 2, and Section III to include in the Code Case.

1471-1 03-09-72 Vacuum Electron Beam Welding of 01-01-78 Tube Sheet Joints, Section ill 1552-1 08-29-77 Design by Analysis of Section Ill, 1477-1 03-09-72 Use of 1970 Addenda of ANSI (N-35-1) 07-01-79 Class ! Valves 01-01-78 B31.7,Section III 1553-1 03-03-75 Upset lleading and Roll Thread-83 1494-1 03-03-73 Weld Procedure Qualification Test, 01-01-76 ing of SA-453 for Bolting in Sec-01-01-78 Section 111 tion 111 1506 12-13-71 Stress Intensification Factors, Sec-1555-1 01-14-77 Certificatico cf Safety Relief Valves, 01-01-78 tion III, Class 2 and 3 Piping 01-01-78 Section Ill, Division 1 1516-2 08-11-75 Welding of Seats or Minor Internal 1569 03-03-75 Design of Piping for Pressure Relief 84 (N-24) 07-01-78 Permanent Attachments in Valves 07-01-79 Valve Station, Section Ill for Section III Applications 12 1516-2 11-20-78 Welding of Seats or Minor Internal Cojc Case 1569 was acceptable subject to compliance (N-24) 01-01-80 Permanent Attachments in Valves with the recommendations contained in Regulatory for Section III Applications Guide 1.67, " Installation of Overpressure Protection 83 1533 06-14-72 Pressure Temperature Ratings of Devices."

07-01-75 SA-351 Grades CF8A, CF3, and CF3M,Section III 1573 04-30-73 Vacuum Relief Valves, Section 111 1535-2 04-30-73 flydrostatic Testing of Section III, 01-01-78 03-21 77 Class ! Valves 1574 04-30-73 ilydrestatic Ten Pressure for Safety 1536 08-14-72 Closing Seam for Electrical Penetra-12-31-74 Re>f Valves,Section III 07-01-77 tions for Section 111, Class 2,3, and 1580-1 11-05-73 Buttwekled Alignment Tolerance and MC O!-01-78 Accq3 table Slopes for Concentric 1539-1 11-21-77 Metal Bellows and Metal Diaphragm Centerlines for Section III, Class 1, (N-30-1) 01-01-81 Stem Sealed Valves,Section III, 2, and 3 Construction Division I, Classes 1, 2, and 3 1581 06-25-73 Power-Operated Pressure Relief 1541-3 05-15-78 flydrostatic Testing of Embedded 03-01-79 Valves,Section III (N-32-3) 07-01-79 Class 2 and Class 3 Piping for Sec-1588 08-13-73 Electro-Etching of Section 111 Code 3

tion III, Division 1 Construction (N-46) 03-19-79 Symbols N-32-4 03-16-81 flydrostatic Testing of Embedded 03-19-82 03-16-84 Class 2 and 3 Piping for Section III, 1601 11-05-73 Limits of Reinforcement for Two-Division 1 Construction 07-01-74 Thirds Area,Section III, Class 1 1606-1 12-16-74 Stress Cri.eria Section III, Classes 2 Code Case N-32-4 was acceptable subject to the fol-07-01-77 and 3 Piping Subject to Upset,Emer-lowing conditions in addition to those conditions gency, and Faulted Operating Con-specified in the Code Case:

ditions The acceptance was based on the following clarifi-Code Case 1606-1 was acceptable subject to the cation and interpretation. Code Case N-32-4 does interpretation that the stress limit designations of not replace paragraph NC/ND 6129, " Provisions for

" Upset," " Emergency," and " Faulted" do not neces-Embedded or Inaccessible Welded Joints in Piping,"

sarily imply agreement with specified plant conditions of the Code. The intent of the Code Case is to (l) pro-applicable to ASME Code Class 2 and 3 components vide additional testing above Code requirement and for fluid systems. These designations should be (2) permit liquid penetrant or magnetic particle testing established and justified in the design specifications.

in place of radiographic testing for Class 3 piping with 3/8" nominal wall thickness or less.

1607-1 11-04-74 Stress Criteria for Section III, 07-01-77 Classes 2 and 3 Vessels Designed Paragraph (1) contains an additional requirement to to NC/ND-3300 Excluding the the Code. It was, therefore, acceptable but unneces-NC-3200 Alternate sary to include in the Code Case. Paragraph (2) is a variation in the volumetric examination technique Code Case 1607-1 was acceptable subject to the and was acceptable as written. Paragraph (3) contains interpretation that the stress limit designations of an additional requirement and is not a relaxation of

" Upset," " Emergency," and " Faulted" do not neces-sarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components nd wN at uu71 o a],eo}

for fluid systems. These designations shcald be b th AS Co on 8-1 7 I

the publication of revisions to Section III in the Winter 1977 Addenda. However, the users did not believe that the Code Case established and justified in the design specifications.

was covered in the Code revision; therefore, ASME reaffirmed the Case on 11-20-78. Because of these circumstances and because 1614 12-17-73 Ilydrostatic Testing cf Piping Prior 34 there were no changes m the Code Case, the NRC considers that this Case was in effect during the period 7-178 through 11-2o-78.

01-01-79 To or Following the Installation of I3Code Case was annulled on date as indicated, but the annul-ment was first indicated in Revision 12 to this guide.

I* Corrected date.

1.84-6

}

Spray Nozzles for Section III, for Section III, Class 1,2,3 and MC Classes 1,2, and 3 Piping Systems Construction 1620 03-02-74 Stress Category for Partial Penetra-1665 11-04-74 Pressure-Temperature Ratings for (N-61) 01-08-79 tion Welded Penetrations, Section (N-81) 07-01-78 Class ! Valves Made from 5 Cr-l/2 01-08-82 III, Class 1 Construction Mo,Section III 1623 03-02-74 Design by Analysis for Section III, 1672 11-04-74 Nuclear Valves for Section III, Divi-03-01-79 Class I Sleeve-Coupled and Other 03-21-77 sion 1, Class 1, 2, 3 Construction Patented Piping Joints 1675 12-16-74 Tubesheet to Shell or Formed llead 1630-1 07-10 78 External Pressure Charts for liigh 07-01-76 Weld Joints, Section 111, Class 1 (N-66-1) 07-10-81 Yield Strength Carbon Steels and Vessels 83 Low Alloy Steels. (Yield Strength 1676 12-16-74 Clarification of Stress Intensities in above 38 Ksi to 60 KsiInclusive.)

07-01-76 Curved Pipe or Welded Elbows, For Section III, Class 1, 2,3, and MC Section III 1633 04-29-74 Brazing of Seats to Class 1,2, and 3 1677 12-16-74 Clarification of Flarige Design Loads, 01-01 78 Valve Body or Bonnets, SectionIII (N-82) 03-01-79 Section III, Class 1,2, and 3 1635-1 08-12-74 Stress Criteria for Section III, Oass 2 1678 12-16-74 Butterfly Valves of Circular Cross 15 07-01-77 and 3 Valves Subjected to Upset, 01-08-79 Section Larger than 24 in. NPS for Emergency, and Faulted Operating 01-01-80 Section III, Class 2 and 3 Constmc-Conditions tion 1681-1 ' 03-03-75 Organizations Accepting Overall 8

Code Case 1635-1 was acceptable subject to the interpre-(N-84) 03-01-79 Responsibility for Section 111 Con-tation that the stress limit designations of " Upset,"

struction

" Emergency," and " Faulted" do not necessarily imply 1683-1 03-01 76 Bolt floles for SectionIII, Class 1, agreement with specified plant conditions applicable 07-01-76 2, 3 and MC Component Supports to ASME Code class 2 and 3 components for fluid 1685 04-28-75 Furnace Brazing Section III, Class 1, systems. These designations should be established and 01-01-78 2, 3 and MC Construction justified in the design specifications.

1686 03-03-75 Furnace Brazing, Section Ill, Sub-t 01-01-78 section NF, Component Supports 1636-1 08-12-74 Stress Criteria for Section111, Class 2 1689-1 09-10-76 Alternate PWIIT Time and Tem-88

)

07-01-77 and 3 Pumps Subjected to Upset, 01-01-78 perature for SA-182 Grade F-22, s

Emergency, and Faulted Operating SA-387 Grade 22, Class 2, and Conditions SA-335 Grade P-22 Section III, Class 1, 2, 3 and CS Code Case 1636-1 was acceptable subject to the inter-pretation that the stress limit designations of " Upset,"

Code Case 1689-1 was acceptable subject to the follow-

Emergency," and " Faulted" do not necessarily imply ing condition in addition to that specified in the Code agreement with specified plant conditions applicable Case: The alternate postweld heat treatment should to ASME Code Class 2 and 3 components for fluid be prequalified a.long with the applicable welding systems. These designations should be established and procedure in accordance with ASME Section IX.

justified in the design specifications.

1692 04-28-75 Rules for Design of Welded Class 1 1651 08 12-74 Interim Requirements for Certifica-(N-90) 07-01-78 Pumps 03-01-79 tion of Component Supports, Sec-1695-1 11-03-75 Brazing,Section III, Division 1,

tion III, Subsection NF 01-01-78 Class 3 1657 11-04-74 Stress Criteria for Class 2 and 3 1700 11-03-75 Determination of Capacities of 07-01-77 Atmospheric and Low Pressure (N-94) 03-19-79 Liquid Relief Valves,Section III, (0-15 psig) Steel Storage Tanks 03-19-82 Division 1, Class I, 2, and 3 1659 11-04-74 Interconnection of Two Piping 1701-2 07-09-79 Determination of Capacities of 07-01-77 Systems for Section III, Class I,2, (N-95-2) 07-09-82 Vacuum Relief Valves, Section 111, and 3 Construction Division 1, Classes 2,3, and MC and 1660 11-04-74 Overpressure Protedion Under Emer-Division 2 Concrete Containments (N-77) 03-01-79 gency Operating Conditions for 1702-1 07-11-77 Flanged Valves Larger than 24 Section III, Class I (N-96-1) 01-01-80 inches for Section III, Division 1, 1661 11-04-74 Postweld IIeat Treatment P-No. I Class 1, 2 and 3 Construction 01-01-78 Materials for Section III, Class 1 1703 06-30-75 Brazing of Copper Alloys SectionIII, Vessels 01-01-78 Class 2 1662 11-04-74 Shop Assunbly of Components, Ap-1706 06-30-75 Data Report Forms for Component

<f 01-01-7S purtmances ad Piring Subassemblies 12-31-75 Supports,Section III, Class 1, 2 l

and 3

\\

83Code Casra 1635 and 1636 were approved by Council on

- 6 July 1,1974, and revised on August 12,1974. Because Code Cases Code Case 1681 was approved by Council on 12-16-74 and 1635 and 1636 were not in effect on September 1,1974, they are revised on 3-3-75. Because Code Case 1681 was not in effect on not includcd in this guide.

March 31,1975, the Code Case was not included in this guide.

1 1.84-7

- ~ - -

1711 11-03-75 Pressure Relief Valve Design Rules, 1733 11-03-75 Evaluation of Safe Shut D wn Earth-(N-100) 01-08-79 Section 111, Division 1, Class 1, 2 (N-115) 01-01-78 quake Loadings for Section 111, 01-21-82 and 3 Division 1, Class hlC Containment 01-01-83 Vessels 1734 11-03-75 Weld Design for Use for Section 111, Code Case 171I was acceptable subject to the following (N-116) 01-01-78 Division 1, Class 1,2,3 and htC Con-conditions in addition to those conditions specified in struction of Coraponent Supports the Code Case. The following information should be provided in the Safety Analysis Report:

Code Case 1734 was acceptable subject to the follow-ing conditions in addition to those conditions specified (1) If stress limits are used in excess of those specified in the Code Case: If the configuration of Figure 1 of the for the upset operating condition, it should be Code Case is used for Class 1 and htC component demonstrated how the pressure relief function is supports, full penetration welds should be used. The ensured. Refer to paragraph 3.1,Section I, of the application of the configuration shown in Figures 2 Case for Class I and paragraph 3.2,Section II, of and 3 should be restricted to the welding of cans for I

the Case for Class 2 and 3 pressure relief valves.

spring encapsulation in spring hangers. In Figure 3, the length of the leg of the fillet weld adjacent to

[

(2) If Case 1660 is to be used in conjunction with this the plate should be equal to the thickness of the Case, it should be stated that the stress limits exposed end of the plate; also, the leg of the fillet of Case 1660 supersede those of paragraph weld adjacent to the shell should be equal to the 3.2(b),Section I, of Case 1711.

Functional thickness of the exposed end of the shell.

assurance of (1) above is required in all situations.

1712 08-11-75 Nameplates and Stamping for Sec-1739-4 11-17-80 Pump Internal

items, Sec-(N-101) 03-01-79 tion 111, Division 1, Class 1, 2, 3 (N-119-4) 12-01-83 tion 111, Division 1,

Class 1,

and h!C Construction as Referenced 2, and 3 in NA-8300 1744 03-01-76 Carbon Steel Pipe Flanges Larger

!3 1718 08-11-75 Design of Structural Connections for (N-121) 03-01-79 than 24in., Sectionlil, Division 1, I

07-01-76 Linear Type Component Supports, Class 2 and 3 Construction Section III, Division 1, Class 1,2 and 1765 04-26-76 Afachining After flydrostatic Testing 3 and htC 07-01-77 Class 2 and 3 Construction, Section 33 1719 08-11-75 Single-Welded, Full-Penetration Side-111, Division 1 07-01-76 wall Butt Joints in Atmospheric 1768 06-29-76 Permanent Attachments to Contain-Storage Tanks, Section 111, Divi-01-01-78 ment Vessels-Class htC, Section Ill, sion 1, Class 2 Division 1 1726 11-03-75 Refinement of Low Alloy Steel 1769-1 02-16-77 Qualification of NDE Leveilli Per-(N-109) 03-01-79 lleat Affected Zone Under Overlay 10-01-77 sonnel, Section 111, Division 1 Cladding, Section Ill, Division 1, 1774-1 07-11-77 hiinimum Wall Thickness for Class 2 Class 1 Components (N-142-1) 01 01-80 and 3 Valves, Section 111, Division 1 1727 12-22-75 Alternate Test Fluids, Section 111, 1775 08-13-76 Data Report Forms for Core Sup-(N-110) 01-01-79 Division 1 08-13 79 port Structures, Class 0, Section 111, Division 1 Code Case 1727 was acceptable subject to the follow-1780-1 07-10-78 " llydrostatic Testing and Stamping ing condition in addition to those conditions specified (N-146-1) 12-11-81 of Components,Section III, Divi-in the Code Case: The applicant should providejustifica-01-01-82 sion 1 Construction tion in the referencing Safety Analysis Report for the fluid selected for use in the pressure test. The informa-tion provided should demonstrate that the fluid selected Code Case 1780-1 was acceptable subject to the follow-will not have deleterious effects on the material of the ing conditions in addition to those conditions specified pressure boundary and that the fluid may be safely in the Code Case: On a generic basis, the application of used at the specified temperature and pressure of the the Code Case is limited to pumps and valves. Applica-test. When the fluid selected for use is the operatmg tion to other components should be treated on a case-fluid, additional information is not required.

by-case basis. Each licensing application in which the Code Case is to be used should contain information 1729 11-03-75 hiinimum Edge Distance - Bolting showing that, as a minimum, the closure fixture will (N-i l l) 03-01-79 for Section 111, Division 1, Classi, impose loads that result in stresses equal to or greater 2, and 3 and 51C Construction of than those induced during the hydrostatic test of a Component Supports complete pump assembly. A closure fixture for the 1732 11-03-75 Ilardsurfaced Valves with inlet part being tested that is similar in size and shape to (N-114) 01-01-79 Connections less than 2-in. Nominal the actual mating part is considered adequate to impose Pipe Size for SectionIII, Division I these' loads. It is not intended that piping reaction Class I and 2 Construction loadings be simulated in the hydrostatic testing.

1.84-8

j 1783-1 01-14-77 Qualification of Nondestructive Code Case N-199 was acceptable subject to the following 01-01-79 Examination Personnel,Section III, condition in addition to those conditions specified in Division I the Code Case: The applicant should provide informa-tion in the referencing Safety Analysis Report that Code Case 1783-1 was acceptable subject to the demonstrates that all intervening elements have been following condition in addition to those conditions designed in compliance with the requirements of the specified in the Code Case: The first sentence of respective design specification.

paragraph (1) should be replaced with the following:

"The certification of the Level 111 nondestructive 1693 03-20-78 Welding Procedure Qualification of examination personnel for the purpose of this Section (N-212) 01-01-81 Dissimilar Metal Welds When "But-of the Code shall be the responsibility of the employer tering" with Alloy Weld Metal and of the LevelIII individual. If the employer is not a lleat Treatment May Be Involved, Certificate lloider, then the verification of such certifi-Section Ill, Division 1,

and

)

cate is the responsibility of the Certificate lloider."

Section IX N-214-2 05-25-83 Use of SA-351 Grade CN7M, for 1791 01-14-77 Projection Resistance Welding of 12-31-83 Valves,Section III, Division 1 (N-154) 01-14-80 Valve Seats, Section Ill, Division 1, N-220 08-28-78 Code Effective Date for Component Class 1,2 and 3 Valves 07-13-8i Supports,Section III, Division i 1796 01-14-77 Body Neck Thickness Determina-07-13-84 (N 159) 07-01 78 tion for Valves with Inlet Connec-N-226 11-20-78 Temporary Attachment of Thermo-tions 4-Inch Nominal Pipe Size and 01-01-80 couples, Section Ill, Division 1, Smaller, Section Ill, Division 1, Class 1, 2 and 3 Component Con-Class 1, 2, and 3 struction 1808 02-16-77 F-Number Classification of Low N-228 03-19-79 Alternate Rules for Sequence of 01-01-78 Alloy and Carbon Steel Bare Rod 03-19-82 Completion of Code Data Report Electrodes Sections I, II, III, IV, V, Forms and Stamping for Section Ill, VIII, and IX Class 1, 2, 3 and MC Construction 1812 03-23-77 Size of lillet Welds fu So;ket Weld-N-238 05-14-79 Iligh Temperature Furnace Brazing (N-174) 01-07-80 ing of Piping, Sa: tion HI, Division 1 01-01-82 of Seat Rings in Valve Bodies or 01-01-81 Bonnets for Section Ill, Division 1818 03-23-77 Welded Joints in Component 1,

Class 1,

2, and 3 Valves (N-175) 07-01-79 Standard Supports,Section III, Division 1 Code Case N-238 was acceptable subject to the follow-ing conditions in addition to those conditions specified Code Case 1818 was acceptable subject to the follow-in the Code Case: The furnace brazing process proce-ing condition in addition to those conditions speci-dure qualification should include a verification for fled in the Code Case: That portion of the unwelded nonsensitization as given in ASTM A 262-70, Practices housing that is limited to 90* maximum should A or E, or ASTM A 708-74 whenever materials subject i

include a minimum of two sectors that are uniform to sensitization are to be brazed. Documentation is

)

in length, required that a nonsensitizing brazing procedure was employed for valves produced to this Case.

N-179 07-11-77 Openings in Valves for SectionIll, 07-11-80 Division 1, Class 1, 2 and 3 Con-N-252 11 19-79 Low Energy Capacitive Discharge struction 07-01-82 Welding Method for Temporary or

)

N-182 07-11-77 Alternate Rules for Procedure Qual.

Permanent Attachments to Compo-1 07-01-81 ification Base Material Orientation, nents and Supports, Section 111, Section Ill, Division 1, Class 2 and Division 1, and XI 3 Construction N-184 07-11-77 Roll Threading of SA-453 Bolting Code Case N-252 was acceptable subject to the following A

07-01-79 for Section 111, Division 1, Class 1, conditions in addition to those conditions specified in

{

2,3 or CS Construction the Code Case: The applicant should indicate in the N-189 08-29-77 Primary Membrane Plus Primary Safety Analysis Report the application, the material, I

07-01-79 Bending Stress Intensity Limits and the material thickness to which the strain gage or for Other Than Solid Rectangular thermocouple will be attached by CD welding.

Sections for Section 111, Division 1, Class MC Construction N-261 05-15-80 Weld Procedure Qualification for N-193 11-21-77 Use of SB41 and SB42 Bronze for 12-13-82 Materials with Impact Require-

!h 11-21-80 Section III, Division 1, Class 3 Flange ments for Section III, Division 1, 4

and Socket Weld End Valves Class 3 Construction N-199 03-20-78 Intervening Elements,Section III, N-263 03-17-80 Alternate Thread Forms, Series and f

01-01-81 Division 1, Classes 1, 2, 3 and MC 03-17-83 Fits for Component Supports, Sec.

Component Construction tion III, Division 1 l

1.84-9 I

Code Case N-263 was acceptable subject to the following length of thread engagement and (2) the procedure conditions in addition to those conditions specified in used to estabhsh thread engagement.

the Code Case. The following information should be provided in the Safety Analysis Report: (1) a descrip-N-320 07-13-81 Alternate PWirr for SA487, Grade tion of the application, (2) a need for the use of the 12-31-83 CA6NM,Section III, Division 1 Code Case, and (3) a demonstration that support design N-330 06-17-82 Examination of Welds inaccessible will withstand maximum conditions of loading with 06-30-83 During Pressure Test, Section 111, the worst combination of thread tolerance.

Division 1, Class MC N-339 06-17-82 Examination of Ends of Fillet N-272 05-15-80 Compiling Data Report Forms, 09-17-84 Welds,Section III, Division 1,

01-01-82 Section 111, Division 1 Classes 1, 2, and MC C

N-275 05-15-80 Repair of Welds,Section III, N-349 07-16-82 Pressure Testing Piping Systems, Sec-12-07-82 Division 1 12-31-85 tion 111, Division 1, Classes 2 and 3 12-31-83 N-359 12-13-82 Weld Connection for Coaxial Cylin-s 12-31-84 ders, Section.111, Division 1, Class 1 Code Case N-275 was acceptable subject to the following N-377 04-04-83 Effective Thraat Thickness of Partial condition in addition to those conditions specified in the 12 31-83 Penetration Groove Welds, Section Code Case: Use of the Code Case is applicable only when III, Division 1, Classes 1, 2, and 3 the removal of an indication requires that the full weld thickness be removed and, in addition, the backside of

3. Code Cases that were endorsed by the NRC in a prior the weld assembly joint is not accessible for the removal version of this guide and were superseded by revised Code of examination material. If an indication is removed Cases on or after July 1,1974, should be considered as and weld-metal layers still remain, it is not acceptable not endorsed as of the date of the Council action that to gouge through the wall in order to qualify for use of approved the revised version of the Code Cases. These the Code Case. Instead, examination of the cavity is Code Cases that are no longer endorsed are listed in the required when such an indication has been removed, following by number, effective dates,3 7 and title.

N-279 05-15-80 Use of Torquing as a Locking 1508 12-13-71 Allowable Stresses, Design Intensity 18 07-13-81 Device for Section III, Division 06-30-75 and/or Yield Strength Values, Sec-1, Class 1, 2, 3, and MC Compo-tion I, III, ara! VIII, Divisions 1 and 2 nent Supports 1516-1 06-25-73 Welding of Seats in Valves for Sec-08-11-75 tion 111 Applications Code Case N-279 was acceptable subject to the following 1539 11-06-72 Metal Bellows and Metal Diaphragm condition in addition to those conditions specified in (N-30-1) 11-21-77 Stem Sealed Valves,Section III, the Code Case: When torquing or other preloading is Classes 1, 2, and 3 used as a locking device and the joint is later unloaded 1540-1 03-03-73 Elastomer Diaphragm Valves, Sec-or disassembled, the bolting should be replaced unless 01-14 77 tion 111, Classes 2 and 3 it can be demonstrated or proved to the authorized 1541-1 08-13-73 Ilydrostatic Testing of Embedded nuclear inspector that the original bolting has not 09-30-76 Clas. 2 and Class 3 Piping for Sec-been permanently strained.

tion III Construction 1541-2 09-30-76 Ilydrostatic Testing of Embedded N-280 05-15-80 Alternate Rules for Examination of 05-15-78 Class 2 and Class 3 Piping for Sec-l 07-01-81 Welds in Section III, Class 3 Storage tion 111, Division 1 Construction i

Tanks 1552 12-18-72 Design by Analysis of Section 111, N-281 05-15-80 Welding Operator Performance Qual-08-29-77 Class ! Valves 07-01-81 ification,Section III, Division 1 1553 12-18-72 Upset IIeading and Roll Threading N-300 11-17-80 Pressure Temperature Ratings, Ilydro-03-03-75 of SA-453 for Bolting,Section III 12-01-83 static Tests, and Minimum Wall 1555 12-18-72 Certification of Safety Relief Valves Thickness of Valves, Section Ill, 01-14-77 on Liquids Division I, Class 1 1606 11-05-73 Stress Criteria for Section III, Class N-302 03-16-81 Tack Welding, Section Ill, Divi-12-16-74 2 and 3 Piping Subjected to Upset, I l-28-83 sion 1, Construction Emergency, and Faulted Operating N-309 05-11-81 Identification of Materials for Com-Conditions 05-11-84 ponent Supports,Section III, Divi-sion 1 Code Case 1606 was acceptable subject to the inter-N-314 0,5-11-81 Alternate Rules for Thread Engage-pretation that the stress limit designations of " Upset,"

05-11-84 ment,Section III, Division 1 Ol 37 Earlier date-date Code Case was approved by ASME Code Case N-314 was acceptable subject to the fo].

lowing conditions in addition to those conditicns ISME uncu.

specified in the Code Case. Applicants should iden-tsCode Case 1508 is no longer listed by ASME as a Section Ill tify in their Safety Analysis Report: (1) the minimum Code Case and is therefore deleted from the acceptable listing.

1.84-10

[,,j

" Emergency," and " Faulted" do not necessari1y imply 1720-1 03-01-76 Weld End Preparation for SectionIII, agreement with specified plant conditions applicable 11-20-78 Division 1 Construction (j

to ASME Code Class 2 and 3 components for fluid systems. These designations should be established and justified in the design specifications.

Code Case 1720-1 was acceptable subjed to the following cordition in addition to tlnse conditions specified in the Code case: The acceptance of weld end preparations other 1607 11-05-73 Stress Criteria for Section Ill, Clas-than those shown in Figures 1,2, and 3 of the Code Case I l-04-74 ses 2 and 3 Vessels Subjected to should be evaluated on a case-by-case tusis.

Upset, Emergency, and Faulted Operating Conditions 1739-2 08-28-78 Pump Internal items, Section Ill, (N-119-2) 08-25-80 Division I, Class I,2, and 3 Code Case 1607 was acceptable subject to the inter-1739-3 08-25-80 Pump Internal items, Section Ill, pretation that the stress limit designations of " Upset,"

(N-119-3) I l-17-80 Division 1, Class 1,2, and 3

" Emergency," and " Faulted" do not necessarily imply 1761 04-26-76 Use of SB-148 Alloy CA954 for Sec-agreement with specified plant conditions applicable 01-14-77 tion 111, Division 1, Class 2 or 3 to ASME Code Class 2 and 3 components for fluid Flanged End Valves systems. These designations should be established and 1761-1 01-14-77 Use of SB-148 Alloy CA954, justified in the design specifications.

(N-133) 01 07-80 Section 111, Division 1, Class 3 04-02-82 1609-1 03-01-76 Inertia and Continuous Drive N-133-1 04-02-82 Use of SB 148 Alloys 952 and 954, (N-55) 08-28-78 Friction Welding,Section I, III, 05-19-85 Section 111, Division I, Class 3 07-13-81 IV, VIII, Division I and 2, and 1769 08-13-76 Qualification of NDE leve1III Per-04-05-84 IX 02-16-77 sonnel, Section 111, Division 1 1630 11-04-74 External Pressure Charts for liigh 1774 08-13-76 Minimum Wall Thickness for Class 2 (N-77) 07-10-78 Yield Strewth Carbon Steels and lav 07-11-77 and 3 Valves, Sectionill, Division 1 Alloy Steels. (Yield strength above 1780 09 10-76 flydrostatic Testing and Stamping 38 Ksi to 60 KsiInclusive.)For Sec-03-10-78 tion III, Class 1,2,3, and MC; and of Pumps for Class 1 Construction,Section III, Division I Section Vill, Division I and 2

['

1683 03-03-75 Bolt lloles for Section 111, Division Code Case 1780 was acceptable subject to the follow-('

03-01-76 1, Class 1, 2, 3 and MC Component ing conditions in addition to those conditions specified Supports in the Code Case: Each licensing application in which

(

1689 06-30-75 Alternate PWitT Time and Temper-the Code Case is to be used should present informa-t 09-10-76 ature for SA-182 Grade F22 Section tion that satisfactorily demonstrates that the subassem-III, Class 1, 2, 3 and CS bly tests adequately simulate the pressure loadings.

Code Case 1689 was acceptable subject to the follow-Also, the closure fixture for the test subassembly should ing condition in addition to that specified in the Code adequately simulate the rigidity of adjacent subassem-Case: The alternate postweld heat treatment should blies' and also simulate the interface loadings from adjacent subassemblies that would result from a be prequalified along with the applicable welding pro-cedure in accordance with ASME Section IX.

hydrostatic pressure test of a complete pump assembly.

As a minimum, the closure fixture should impose loads I

that result in stresses equal to or greater than those 1695 04-28-75 Brazing,Section III, Class 3 induced during the hydrostatic test of a complete I l-03-75 pump assembly. It is not intended that piping reac-1701 06-30-75 Determination of Capacities of 03-20-78 Vacuum Relief ValvesSection III, tion loadings be simulated in the hydrostatic testing.

Class MC 1783 09-10-76 Qualification of Nondestructive Per-1701-1 03-20-78 Determination of Capacities et 01-14-77 k

Vacuum Relief Valves,Section III, sonnel,Section III, Division 1 (N-95-1) 03-19-79 07-09-79 Division 1 and 2,

Class MC Code Case 1783 was acceptable subject to the follow-

}

1702 06-30-75 Flanged Valves Larger than 24 07-11-77 inches for Section III, Class 1, 2 ing condition in addition to thoee conditions specified in the Code Case: The first sentence of paragraph (1) and 3 Construction should be replaced with the following: "The certifica-1720 08-11-75 Weld End Preparation for Section111, tion of the Level 111 nondestructive examination person-03-01-76 Division 1 Construction nel for the purposes of this Section af the Code shall Code Case 1720 was acceptable subject to the follow-be the responsibility of the employer of the Level 111 fh ing condition in addition to thnse conditions specified individual. If the employer is no'. a Certificate lloider, th'en the verification of such certificate is the responsibil-(

in the Code Case: Weld end preparations other than ity of the Certificate lloider."

A those shown in Figures 1, 2, and 3 of the Code Case are not acceptable on a generic basis. Such alternative N 192 01 09-78 Use of Flexible llose for Section III, end preparations should be treated on a case +y<ase basis.

08-30-79 Division 1, Class i,2, and 3 Constructbn 1.84-11

Code Case N-192 was acc eptable subject to the following Code Case N-318-1 was acceptable subject to the fol-conditions in addition to those conditions specified in lowing conditions in addition to those conditions spe-the Code Case. The applicant should indicate system cified in the Code Case. Applicants should identify application, design and operating pressure,and pressure-in their Safety Analysis Report: (1) the method of lug temperature rating of the flexible hose. Data to demon-attachment, (2) the piping system involved, and (3) the strate compliance of the flexible hose with NC/ND-3649, location in the system where the Case is to be applied.

particularly NC/ND-3M9.4(e), are required to be furnished with the application.

N-345 06-17-82 Attachment of AMS 5382 Alloy 31 12-13-82 Seat Rings by Friction Welding, Sec-N-192-1 08-30-79 Use of Flexible llose for Section Ill, Divi-tion 111, Division 1, Classes 1,2, and 3 09-16-81 sion 1, Class 1, 2, and 3 Construction N-362 02-14-83 Alternate Rules for Pressure Testing 05-25-83 of Containment items, Section 111, Code Case N-192-1 was acceptable subject to the follow-Division 1 ing conditions in addition to those conditions specified N-362-1 05-25-83 Pressure Testing of Containment in the Code Case: The applicant should indicate system 07-12-84 Items,Section III, Division 1,

Classes 1, 2, and MC application, design and operating pressure, and pressure-temperature rating of the flexible hose. Data to demon-strate compliance of the flexible hose with NC/ND-3649,

4. Code Cases for Class I components that are not on particularly NC/ND-3649.4(e), are required to be furnished the approved list of this guide (paragraph C.1) or other with the application.

regulatory guides, or for which authorization by the Commission has not been granted, are not acceptable N-196 01-09-78 Exemption from the Shakedown for Class I components.

01-08-79 Requirements When Plastic Anal-ysis is Performed for Section lit,

5. Code Cases for other classes of components that are Division I, Class 1 Construction not on the approved list of this guide (paragraph Cl) or N-214 05-15-78 Use of SA-351, Grade CN7M, for other regulatory guides should be considered not axeptable 07-13-81 Valves for Section 111, Division 1, on a generic basis.

09-07-82 Constructicn N-214-1 09-07-82 Use of SA-351 Grade CN7M, for 05-25-83 Valves. Section Ill, Division 1 D.

IMPLEMENTATION N-237 07-09-79 Ilydrostatic Testing of Internal 01-21-82 Piping, Section Ill, Division 1 09-07-82 The purpose of this section is to provide infor-N-237-1 09-07-82 Ilydrostatic Testing of Internal Piping, mation to applicants regarding the use of this regulatory 05-25-83 Section 111, Division 1, Classes 2 and 3 guide.

N-304 06-11-81 Use of 20Cr-25Ni-6Mo (Alloy UNS 04-05-84 NO8366) Welded Tubes for Sec-07-12-84 tion !!!, Division 1, Classes 2 and 1.

Except for those Code Cases that have been

(

3 Construction annulled by action of the ASME Council, the NRC N-304-1 07-12-84 Use of 20Cr-25Ni-6Mo (Alloy UNS staff has found the Code Cases listed in this regult-05-19-85 NO8366) Welded Tubes for Sec-tory guide under regulatory position C.1 acceptable for tion 111, Division 1, Classes 2 and appropriate use. Other Code Cases may be considered 3 Construction for use in accordance with footnote 6 of the Codes N-318 07-13-81 Procedure for Evaluation of the and Standards rule, p 50.55a of 10 CFR Part 50.

02-20-84 Design of Rectangular Cross Sec-tion Attachments on Class 2 or 3 Piping,Section III, Division 1

2. Components ordered to a specific version of a Code Case need not be changed because a subsequent Code Case N-318 was acceptable subject to the follow-revision to the Code Case is listed as the approved

[

ing conditions in addition to those conditions speci-version in this guide.

fied in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the

3. Components ordered to a Code Case that was location in the system where the Case is to be applied.

previously approved for use need not be changed be-cause the Code Case has been subsequently annulled.

N-318-i l9 02-20-84 Procedure for Evaluation of the 07-12-84 Design of Rectangular Cross Sec-tion Attachments on Class 2 or 3

4. Code Cases on the approved list may be applied Piping, Section Ill, Division I to components that were in process of construction prior to the effective date of the Code Case within the limits specified in the Code Case and applicable 19The conditional acceptance was friadvertently omitted in regulations or recommended in other regulatory guides.

Revision 23 of this guide.

l.84-12

APPENDlX NUMERICAL LISTING OF CODE CASES

• 1540-2 (N-31)

N-243 N-346 N-55-1 N 247 N-347 g

1621-2 (N-62-2)

N-260 N-350 1630-1 (N-66-1)

N-262 N-357 1720-2 (N-106-2)

N-271 N-362-2 l l

1739-4 (N-l19-4)

N-276 N-368 I

1745 (N-122)

N-282 N-369 l N-133-2 N-284 N-376 1791 (N-154)

N-292 N-383 1792-2 (N-155-2) l N-304-2 N-391 1797 (N-160)

N-309 N-392 N-192-2 N-313 N-393 N-196-1 N-315 N-394 N-215 N-316 N-397 N-2171 l

N-318-2 N-410 i

N-229 N-319 N-411 N-233 N-328 N-412 N-237-2 N-341 N-413 I

N-240 N-345-1 N-420 N-241 N-421

• Code Case 1625 was inadvertently listed in the appendix of Regulatory Guide 1.84, j

Revision t. This Code Case is covered in Regulatory Guide 1.85, Revision 1.

Code Case 1575 is a Section VI!! Case and therefore has been eliminated from this regulatory guide,which covers Section Ill Cases.

1.84-13

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