ML20248B961

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Rev 26 to Reg Guide 1.84, Design & Fabrication Code Case Acceptability ASME Section III Div 1
ML20248B961
Person / Time
Issue date: 07/31/1989
From:
NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:
References
REGGD-01.084, REGGD-1.084, NUDOCS 8908090383
Download: ML20248B961 (16)
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Rrrision 26

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U.S NUCLEAR REGULATORY COMMISSION July 1989 U,,

Q,-@, REGU LATORY GUIDE

..a.+ OFFICE OF NUCLEAR REGULATORY RESEARCH REGULATORY GUIDE 1.84 DESIGN AND FABRICATION CODE CASE ACCEPTABILITY ASME SECTION lli DIVISION 1 A. INTRODUCTION Appendix B, " Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants," to 10 CFR Section 50.55a, " Codes and Standards," of 10 CFR Part 50 requires, in part, that measures be established for Part 50, " Domestic Licensing of Production ari Utiliza- the control of special processing of materials and that tion Facilities," requires, in part, that componet.ts of the proper testing be performed.

reactor coolant pressure boundary be designed, fabri-cated, erected, and tested in accordance with the require- This regulatory guide lists those Section 111 ASME Code ments for Cass I components of Section 111, " Nuclear Cases oriented to design and fabrication that are generally Power Plant Components,*1 of the American Society of acceptable to the NRC staff for implementation in the Mechanical Engineers (ASME) Boiler and Pressure Vessel licensing of light-water-cooled nuclear power plants.

Code or equivalent quality standards. Footnote 6 to E 50.55a states that the use of specific Code Cases may Any information collection activities snentioned in this be authorized by the Commission upon request pursuant regulatory guide are contained as requirements in 10 GR to 6 50.55a(a)(2)(ii), which requires that proposed altere Part 50, which provides the regulatory basis for this guide.

l natives to the described requirements or portions thereof The information collection requirements in 10 GR Part 50 I provide an acceptable level of quality and safety. havc been cleared under OMB Gearance No. 3150 Mil.

O General Design Criterion 1, " Quality Standards and Records," of Aprendix A, " General Design Criteria for B. DISCUSSIGN

(' w Nuclear Power P? ants," to 10 CFR Part 50 requires,in part, The ASMF and Pressure Vessel Co.mmittee that structures, systems, and components important to publishes a doch a ' titled " Code Cases."1 Generally, j safety be designed, fabricated, erected, and tested to qual- the individual Code Cases that make up this document i

ity standards commensurate with the importance of the explain the intent of Code rules or provide for alter-safety function to be performed. Where generally recognized native requirements under special circumstances.

codes and standards are used, Criterion I requires that they be identified and evaluated to determine their applicability, Most Code Cases are eventually superseded by revi-adequacy, and sufficiency and be supplemented or modified sion to the Code and then are annulled by action of as necessary to ensure a quality product in keeping with the the ASME. In such cases, the intent of the annulled tu < a required safety function. Code Case becomes part of the revised Code, and there-fore continued use of the Code Case intent i tor:ctiontd

- $ Cthedon 30, "Qvality of Reartry Caolant Pre m re unider the rulez of the Code. In other ccsen, the Code C- Bour.dary," of the same appen.Us n quires, sr. part, that Case is annu!1ed because it is no lonr,er acceptable or

{ con:ponents that ce part of 2x reactor cociaM prenua o there is no fttrther ror,uirement for it. A Cede Case that g tearsdary he 4: signed, hbricated, erected, and teod to was e; proved for 3 peticular siccasion rmd 140t for a the h@est grebty stadards practicut. generic applicuion thoun he used only for construction

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Copies may be ob*ained from the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th of the approved sirvation because annuhnent or such a Code Case could result in construction that would not Street, Diew York, New York 10017. meet Code requirements.

O (D ID O Otr - - - -

Ib Q - U$N AC REGULATORY GUICE' ihe Sa. des a e L due6 le im folowiree ten bechd ONsion1 (LCL O Aeguistote Guices are issued to d6scuoe ei.o wke evasab's 4 a the pubisc rnethods acecf table to g spectfic rarts of the cc,mmiss.o,ho NOC 4taffs repte ns o unsnaat,eritinig or smpurr 1. Power Ractors 6. Procues tec eu 7 Transoor*ation n.oi.es usert by tr.e staff m evaluatmg sp.acific orno. ems or postu. r.

3F Research uels JaidaM Tes; M.ac.of teaterials racisme,: a. Ocevsa tonsl a<ealt**

fated accioents, er to prodde guioance to aDDI-cents. Regulatory 4. Environmental and O rm 9. AntitrJst anh Fa*1ar.cial Revisiw Guices are no'. sutaltutes fc,r regulations, ano compsiance w#th S. Materials and P%nf k.atution 10. Gereial them is not n auired. Metheds and solutens 'inf terent trom those set out in the guides will be acceptable if they provide a basis for tne A tmdings reouisite to the issuance or contmuance of a permit or copies of hsued guides may be purchased from the Government

/ license by the Comm6Ss6on. Prmtmg Othee at tne current GPO price. Information on current GPO prices may be obtained by contactmo the Superentencent of

?

A' This guide was issued af ter consideration of comments received from Documents, U.S. Government Prmtmg Of f ace. Post Of f 6te Bom the public. Comments and suggestions for improvements in these 3 7082, Washington, DC 20015 7082, telephone (202)275-2060 or guioes are encouraged at au times, and guiries will be revised. as (202)275 2171.

appropriate, to accommodate comments and to reflect new mforma-tion or emperience.

Issued gu6 des may also be purchased from the National Techn6 cal Written comments may be submitted to the Regulatory Publ# cations Information $ervsce on a standang oroer bases. Details on this Branc h. DFIPS, A H M, U.S. Nuclear Hegulatory Commission, service may be obtained by writmg NTIS, 528b Port Royal Road.

Washington, DC 205$5. 5prmgfseta, V A 22161.

4 The Code Cases listed in this guide are limited to intended to facilitate the Code Case listing and is not those cases applicable to Section Ill that are oriented intended to indicate a limitation on its usage.

toward design and fabrication.

t Design-oriented Code Cases (Code Case number, All published Code Cases in the area of design and date of ASME approval,3 and title):

fabrication that are applicable to Section III of the Code eland were in effect on December 8,1987, were reviewed for inciesion in this guide. In addition to the listing of (1) Code Cases applicable to piping design:

accer Code Cases, this revision of the guide includes listinn J (1) Code Cases that were identified as accept- 1745 03 01-76 Stress Irdices for Structural Attach-able in a prior version of this regulatory guide and that (N-122) 01-08-79 ments, Cass),Section III, Division I were annulled after the original issuance of this guide 01-21-82 (June 1974) and (2) Code Cases that were identified as 01-21-85 acceptable in a prior version of this regulatt ry guide 01-21-88 and that were superseded by revised Code Cases after N-160-1 07-18-85 Finned Tubing for Construction, the original issuance of this guide (June 1974). Code Section III, Division 1 Cases that are not listed herein are either not endorsed N-453 12-07-87 Nickel-Chromium-Moly bdenu m-or will require supplementary provisions on an individual Copper Stainless Steel (UNS basis to attala endorsement status. N08925) Welded Pipe for Class 2 and 3 Construction Section III, k The endorsement of a Code Case by this guide Division I constitutes acceptance of its technical potition for N-454 12-07-87 Nic kel-Chro mium-M oly bd e num-applications not precluded by regulatory or other require- Copper Stainless Steel (UNS ments or by the recommendations in this or other N08925) Wrought Fitting. for regulatory guides. Contingent endorsement is indicated Cass 2 and 3 Construction Sec-in regulatory position C.I.c for specific cases. Ilowever, tion III, Division 1 it is the responsibility of the user to make certain that N-455 12-07-87 Nickel Chro mium-M oly bd enum-no regulatory requirements are violated and that there Copper Stainless Steel (UNS are no conflicts with other recommended limitations N08925) Forged Flanges and resulting from Code Case usage. Fittings for Gass 2 and 3 Con-struction Section Ill, Division 1 Acceptance or endorsement by the NRC staff applies only to those Code Cases or Code Case revisions with the date of ASME approval as s'iown in the regulatory (2) Code Cases applicable tr, valve design:

position of this guide. Earlier or later revisions of a Code Case are not rudorsed by this guide. New Code N-133-3 07-18-85 Use of SB-148 Alloys 952 and 954 Cases will require evaluation by the NRC staff to Section III, Division 1, C ass 3 determine if they quahfy for inclusion in the approved N-282 05-15-80 Nameplates for Valves, SectionIll, list. Because of the continuing change in the status of 05-25-83 Division 1, Cass 1,2, and 3 Con-Code Cases, it is planned that this guide will require 07-30-86 struction periodic updating to accommodate new Code Cases and N-313 05-11-81 Alternate Rules for lhlf-Coupling any revisions of existing Code Cases. Il 28-83 Branch Connections,Section III, Il-2846 Division 1 N394 02-23-84 Restricting Lift to Achiev Red C. REGULATORY POSITION Relievir.g Cracities of Full Lift, notrh Tne, an.\ Fi?t SEAM

1. The Section Ill ASME Cc,de Ceses' iirted below Safety and Stfc4 PAlief Whe.

(by mmber, date of ASIWE approval, and title) are fa- %mprestibh fed Ap. dice axeptabk to the NFC stet kr application in 11e con- . tLns, Sectiou m, D!vasic-r4 1, struction of componer:ts fr st light-water-cooled nuclear ' Casses 2 and 3 power plcnts. Their use is acceptable within the limitations N-410 12-05-84 Certified Relieving Capacities of stated in the " Inquiry" and " Reply" sections of each Prersure Rehef Valves llavirg Sct individual Code Case, within the lindtations of such heasure of 3 psig up to but Not NRC or other rtc,uirements as may exist, and within the inclndir g 15 psig Installed for Over-additicual Errastions iccomroended by the NRC vaff pn9mc Botection of Cow;ressMe I;ven with the individual Code Case in the listing. The FMd Systems, Section 111, Divi-ratenorization of Code Cas% used in this guide is sion 1, C*m sses 2 ed 3

  • l.ines indicate substantive changes from Revision 25 hen mort than one date is given, the earlier date is that on which the Code Came was approved by the ASME and the later 2

date(s) is that on which the Code Case was reafnrme:2 by the A numerical listing of the Code Cases appears in the appendit. ASME.

1.84-2

N442 02-2347 1977 Addendum to ANSI /ASME N 412 04-15-85 Alternative Rules for Witnessing PTC 25.3-1976, Saf ty and Safety the Piping Syntem Pressure Tet,ts Relief Vanes, Oass 1, 2, 3, and of Gasses I, 2, and 3 Piping MC, Section 111, Division 1 Systems, Section 111, Division 1 N-420 02-14 85 Linear Energy Absorbing Supports (3) Other Code Cases related to design: for Subsoction NF, Gasses 1, 2, and 3 Construction,Section III,

. t ,N-119-6 09-05-85 Pump Internal items,Section III, Division 1

' Division 1, Cass 1, 2, and 3 N-196-1 01 08-79 Exemption from the Shakedown Code Case N420 is acceptable subject to the follow-01 21-82 Requirements When Plastic Analy- ing conditions in addition to those conditions speci-01-21-85 sis is Itrformed for Sectionlil Divi- fled in the Code Case. Each applicant desiring to use l 01-2148 sioni, Gass 1 and CS Construction the Code Case should provide the following information N-243 08-30-79 Bo mdaries Within Castings Used for prior to implementing the Case: (1) indication of systems 07-16-82 (bre Support Structures, Section'Ill, in which energy-absorbing supports are to "ae used, 05-19-85 Division 1, Cass CS (2) fatigue design, (3) piping system analysis results N-247 07 09-79 Certified Design Report Summary considering inelastic behavior of supports, and (4) plans 01-2142 for Component Standard Supports, for in.:ervice examination of energy absorbers.

01-21-85 Section 111, Division 1, Oass 1, 2, 3 and MC N-433 12-16-86 Non ihreaded Fasteners for Sec-N-309-1 12-05 85 Identification of Materials for Orn- tion III, Division 1, Cass 1, 2, and potent Supports,Section III, Divi- 3 Component and Piping Supports, sion 1 Section 111, Division 1 N-319 07-1341 Alternate Procedure for Evaluation 01-1344 of Stresses in Butt Weld Elbows in b. Fabrication-oriented Code Cases:

Cass 1 Piping,Section III, Divi-sica 1 (1) Code Cases related to v'elding and brazing:

N-341 06 17-82 Certification of level 111 NDE 05-19 85 Examiner, Section Ill, Division 1 N-154-1 12-05-85 Projection Resistance Welding of 02-2347 and 2 Valve Seats, Section 111, Division 1, l

N-411-1 02-20-86 Alternative Damping Values for Cass 1,2 and 3 Valves ,

Response Spectra Analysis of N-233 01 08-79 Alternate Rules for PWilT of P-No.

Casses 1, 2, and 3 Piping, Sec- 01-21-82 6, Group 4 Material for Section 111, tion 111, Division 1 09-17-84 Division 1, Cass1,2, or 3 Construc-tion Code Case N-411-1 is acceptable subject to the follow- N-260-2 12-05-85 Weld Repair of SA-182 Type 316 ing conditions in addition to those conditions specified Forgings, Section Ill, Division 1, in the Code Case: (1) The Code Case damping should Casses 1, 2, 3, and IviC be used completely and consistently, if used at all.

(For equipment other than piping, the damping values Code Case N-260-2 is acceptabic subject to the follow-specified in Regulatory Guide 1.61, " Damping Values ing condition in addition to those condi ions t speci-for Seismic Design of Nuclear Power Plants," should fled in the Code case: Type 308 L welding mate'ials be used.) (2) The damping values specified may be should not be used to repair grade F 316 N forgings used only in those analyses in which current seismic because of the differences in strength levels.

spectra and procedures have been employed. Such use should be limited only to response spectral analyses N-262 01-07-80 Electric Resistance Spot Welding (similar to that used in the study supportingits accept- 09-07-82 for Structural Use in Component ance - Reference NUREG/CR-3526). The acceptance of 09-05-85 Supports, Section 111, Division I the use with other types of dynamic analyses (e.g., time- N-304 4 02-23-87 Use of 20Cr-2SNi-6Mo (Alloy UNS history analysis or independent support motion N08366) Plate, Sheet, Strip and method) is pending further justification. (3) When Welded Pipe, Can 2 and 3 Sec-used for reconciliation work or for support optimiza- tion III, Division tion of existing designs, the effects of increased motion N-315 02-14-83 Repair of Bellows, Section 111, on existing clearances and on line mounted equip- 02-19-86 Division 1 mt.nt should be checked. (4) This Code Case is not appropriate for analyzing the dynamic response of Code Case N-315 is acceptable subject to the following piping systems using supports designed to dissipate conditions in addition to those conditions specified in energy by yiciding (i.e., the design of which is the Code Cue: Prior to implementation of the Code covered by Code Case N-420). (5) This Code Case is Case, the applicant should present a description of the not applicable to pip'ing in which stress corrosion repair and a justification why the be110ws should be cracking has occurred unless a case-specific evaluation repaired rather than replaced. Following receipt of is made and is reviewed by the NRC staff, approval for the repair, but prior to making the repair, 1.84-3

the applicant should present the results of the quali- N-430 02-28-86 Alternative Requirements for Weld-fication on the fullnale facsimile bellows, including ing Workmanship and Visual  ;

the design requirements, to ensure that the repair Acceptance Criteria for Gass 1, meets the requirements of the design specification. 2, 3 and MC Ilnear-Type and Standard Supports,Section III, N-316 12-11-81 Alternate Rules for Fillet Weld Division 1 09-17 84 Dimensions for Socket Welded Fittings,Section III, Division 1, Code Case N-430 is acceptable subject to the follow-Cass 1, 2, and 3 ing conditions in addition to those conditions speci-N-3451 12-13-82 Attachment of AMS 5382 Alloy 31 Ced in the Con Case: (1) The apphcant should Seat Rings by Friction Welding, demonstrate that the applicable supports are not sub-Section 111, Division 1, Casses 1, ject to cyclic loading in excess of 20,000 cycles and 2, and 3 (2) the first sentence of 3.0(f)(1) should be replaced N-357 12-13-82 Certification of Material for Com- with the following: "For material 3/8 in. and less 05-19-85 ponent Supports,Section III, nominal thickness, undercut depth of 1/32 in. on one Division 1, Subsection NF side of the member for the fuu length of the weld, N-391 11-28-83 Procedere for Evaluation of the De- or 1/32 in. on one side for one-half the length of sign of Ilollow Ciradar Cross Section the weld, and 1/16 in, for one-fourth the length of Welded Attachments on Cass 1 Pip- the weld on the face of a rectangular tube or one-ing,Section III, Division I fourth the length of the weld on the same side of N-392 11 28-83 Procedure for Evaluation of the the member is acceptable."

Design of liollow Circular Croas Section We1Jed Attachments on c. Code Cases with contingent approval:

Casses 2 and 3 Piping,Section III, Division ! N-31-1 07 18-85 Elastomer Diaphragm Valves, Sec-N-393 11-28-83 Repair Wrlding Structural Steel tion Ill, Ciass 2 and 3 Rolled Shaped and Plates for Com-ponent Supports,Section III, Divi- Code Case N-31-1 is acceptable nNect to the follow-sion 1 ing conditions in addition to tnose conditions speci-fied in the Code Case: rach applicant who applies the (2) Other Code Cases related to fabrication: Code Case should indicate in the referencing Safety l Analysis Report that the service life of the elastomer N-215 05-15-78 Integrally Finned Titanium Tubes, diaphragm should not exceed the manufacturer'sSection III, Division 1, Cass 3 Con- recommended service life. This recommended service  ;

struction life should not exceed 1/3 of the minimum cycle life l b237-2 05-25-83 flydrostatic Testing of Internal as established by the requirements of paragraph 3 of '

07-30-86 Piping, Section Ill, Division 1, the Code Case. In addition, the service life of the l 12-07-87 Casses 2 and 3 elastcmer diaphragm should not exceed 5 years, and N-240 03-19-79 Ilydrostatic Testing of Open Ended the combined service and storage life of the elastomer 01-21-82 Piping, Section !!!, Division 1 liaphragm should not exceed 10 years.

09-17-84 N-241 07-09-79 Ilydrostatic Testing of Piping, Sec- N-62 4 09-05-85 Internal and External Valve Items, 01 21-82 tion III, Division 1 Section 111, Division 1, Class 1, 2 09-17-84 and 3 line Valves N-362-2 07-12-84 Pressure Te ting of Containment .

l 07-27-87 Items, Section Ill, Divi. ion 1, Q)de Case N-62-4 is acceptable subject to the follow-Gasses I, 2, and MC ing condition in addition to those conditions specified S368 07-06-83 Pressure Testing of Pump Discharge, in the Code Case: The Code requires that Cass 1 and 06-30-87 Section 111, Division 1, Casses 2 Cass 2 valve manufacturers meet the provisions of l NCA 4000, " Quality Assurance," and, in addition, and 3 Cass 3 valve manufacturers should also meet the Code Case N-368 is acceptable subject to the follow- provisions of NCA 4000.

ing condition in addition to those conditions speci-fied in the Code Case: Applicants ushg this Code 1720-2 11-20-78 Weld End Prepamtion for SectionIII, Case should provide information to demonstrate that (N-106-2) 08-28-81 Division 1 Construction the length of discharge piping is reasonably short. 09-17-64 09-17-87 N-369 02-14-83 Resistance Welding of Bellows, 02-19-86 Section III, Division 1 Code Case 1720-2 (N-106-2) is acceptable subject to N-414 02-20-86 Tack Welds for Cass I, 2,3 and the following condition in addition to those condi-MC Components and Piping Sup- tions specified in the Code Case: The acceptance of ports, Section 111, Division I weld end preparations other than those shown in 1.84-4

Figures 1, 2, and 3 of the Code Case should be Code Case N-318-3 is acceptable subject to the fol-evaluated on a case-by-case basis, lowing conditions in addition to thore conditions specified in tbe Code Case. Applicants should identify

/

( ) 1792-2 01-08-79 Fiberglass Reinforced ' Thermosetting (N-155-2) 01-21-82 Resin Pipe,Section III, Division 1 in their Safety Analysis Report: (1) the method ci lug attachmere, (2) the piping system involved, and (3) the 01-21-85 location in the system where the Case is to be applied.

l 012148

2. Code Cases that were endorsed by the NRCin a prior Code Case 1792-2 (N-155-2)is acceptable subject to the verr. ion of this guide and were later annulled by action of following condition in addition to those conditions the ASME should be considered as deleted from the specified in the Code Case: The applicant should coin- list of acceptable Code Cases as of the date of the ASME ply with the additional requirements that are specified action that approved the twnulment. Such Code Cases, in Regulatory Guide 1.72, " Spray Pond Piping Made which were annulled on or after July 1,1974, are listed from Fiberglass-Reinforced Thermosetting Ress." below by number, effective dates,4 and title.s N-192-2 09-16-81 Use of Braided Flexible Connec- 1361 2 03 09-72 Socket Welds,Section III 09-17-84 tors, Section if1, Division 1, Class 2 03-01-79 l

09-17-87 and 3 Code Cr.se 1361-2 was acceptable when used in connec-tion with Section III, paragraph NB-3356, Fillet Welds.

Code Case N-192-2 is acceptable subject to the iollowing conditions in addition to those conditions specified in 1461-16 03-09-72 Electron Beam Welding, Section 1, the Code Case: The applicant should indicate system 02-16-77 III, and VIII, Division 1 and 2 application, desi;;n and operating pressure, and pressure- 1470 # 12-18-72 External Pressure Charts for High-temperature rating of the flexible hose. Data to demon- 11 04-74 Strength Carbor. Steels and for strate compliance of the fictible hose with NC/ND-3649, Low-Alloy Steels,Section VIII, particularly NC/ND-3649.4(e), are required to be furnished Division 1 and 2, and Section III with the application. 1471-1 03-09-72 Vacuum Electron Beam Welding of 01-01-78 Tube Sheet Joints,Section III l

I N-284 08-25-80 Metal Containment Shell Buckling 1477-1 03-09-72 Use of 1970 Addenda of ANSI f 05-25-83 Design Methods,Section III, Divi- 01-01-78 B31.7, Section 111 03-03-73 Weld Procedure Qualification Test,

( '

07-30-86 sion 1, Class MC 1494-1 01 01-78 Section til Code Case N-284 is acceptable subject to the follow- 1506 12-13 71 Stress Intensification Factors, Sec-ing condition in addition to those conditions speci- 01-01 78 tion Ill, Class 2 and 3 Piping fled in the Code Case: Prior to implemer.tation of 1516-2 08-11 75 Welding of Ses.ts or Minor Internal the Code Case, the applicant must demonstrate to (N-24) 07-01-78 Permanent Attachments in Valves the satisfaction of the NRC staff (via Safety Analysis for Section 111 Applications F.eptt) that any axisymmetric techrdques that are 1516-2 11 20-788 Welding of Seats or Minor Internal proposed will be applicable to a vessel having lart.c (N-24) 01-01-80 Permanent Attachments in Valves

( asymmetric openings and that the overall margin used for Section til Applications to prevent shcIl buckling is acceptable. 4 Earlier date-date Code Case was approved by ASME; later date-date Code Case was annulled. Where more than two dates N-292 01-05-81 Depositing Weld Metal Prior to appear, the last date is the date that the Code Case was annutied.

11-28-83 Preparing Ends for Welding, Sec- The middle date (or dates) was the date of reaffirmation of the we Cau.

07-30-86 tion 111, Division 1, Class 1, 2, and 3 Construction 5%%%ggge,wg the original bsue of this guide, were annulled by ASME action Code Case N-292 is acceptable subject to the following prior to July 1.1974.

conditions in addition to those conditions specified in the Code Case: Class 3 piping that is longitudinally 6 Code Case 14611 is no lonser tinted as a section FII code Can and is thenfon delesw from the ocuptam usag.

welded and that has a weld efficiency factor of 1,0 as selected from Table ND-36134-1 should receive a 100 7 The annutment of Code Case 1470 2 was effective upon percent volumetric examination (RT or UT) of the ASME approval of Code Case 1630. However, because of an over-sight, the annulment was not noted until publication of Supplement deposited weld metal in accordance with the require. h 13t the IM4 Me Cases.

ments of ND 5000.

8 This revision of the Code Case was crisina!!y approved by the ASME on 811-75 and was annuDed on 7178 because of the pubucation of nvisions to Section El in the Winter 1977 Addenda.

N-318-3 09-05-85 Procedure for Evaluation of the De- However, the users did not believe that the Code Case was covered

[g sign of Rectangular Cross Section in the Code revision; therefore, ASME reaffirmed the Case on

' Attachments on Class 2 or 3 Pip- 1 20-78. Der.ause of these circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ing,Section III, Division 1 effect during the period 7-178 through 11 20 78.

1.84-5

15339 06-14 72 Pressure Temperature Ratings of 1573 04-30-73 Vacuum Relief Valees,Section III O h01-75 SA-351 Grades CF8A, CF3, and 01-01-78 CF3M, Section 111 1574 04-30-73 Ilydrostatic Test Pressure for Safety 1535-2 04-33-73 Ilydrostatic Testing of Section III, 12-31-74 Relief Valves, Section 111 03-21-77 Cass ! Valves 1580-1 11-05-73 Buttwelded Alignment Tolerance 1536 08-14-72 Cosing Seam for Electrical Penetra- 01-01-78 and Acceptable Slopes for Concen-07 01-77 tions for Section III, Cass 2,3, and tric Centerlines for Section Ill, MC Class 1, 2, and 3 Construction 1539-1 11-21-77 Metal Bellows and Metal Diaphragm 1581 06-25-73 Power-Operated Pressure Relief (N-30-1) 01-01-81 Stem Scaled Valves, Section 111, 03-01-79 Valves, Section Ill t Division 1, Casses 1, 2, and 3 1588 08-13-73 Electro-Etching of Section 111 Code l

1541-3 05-15-78 flydrostatic Testing of Embedded (N-46) 03-19-79 Symbols (N-32-3) 07-01-79 Cass 2 and Cass 3 Piping for Sec- 03-19-82 tion 111 Division 1 Construction 1601 11-05-73 Limits of Reinforcement for Two-N-3 2-4 03-16-81 Ilydrostatic Testing of Embedded 07-01-74 Thirds Area, Section 111, Class 1 03-16-84 Cass 2 and 3 Piping for Section Ill, 1606-1 12-16-74 Stress Criteria Section III, Casses 2 Division 1 Construction 07-01-77 and 3 Piping Subject to Upset, Emergency, and Faulted Operating Conditions Code Case N-32-4 was acceptable subject to the fol-lowing conditions in addition to those conditions specified in the Code Case: Code Case 1606-1 was acceptable subject to the interpretation that the stress limit designations of The acceptance was based on the following clarifi- " Upset," " Emergency," and " Faulted" do not neces-cation and interpretation. Code Case N-3 2-4 does sarily imply agreement with specified plant conditions not replace paragraph NC/ND 6129, " Provisions for applicable to ASME Code Cass 2 and 3 components Embedded or inaccessible Welded Joints in Piping," for fluid systems. These designations should be ,

of the Code. The intent of the Code Case is to (1) pro- established and justified in the design specifications.

vide additional testing above Code requirement and (2) permit liquid penetrant or magnetic particle testing 1607-1 11-04-74 Stress Criteria for Section III, in place of radiographic testing for Cass 3 piping with 07'01-77 Casses 2 and 3 Vessels Designed 3/8" nominal wall thickness or less. to NC/ND-3300 Excluding the NC-3200 Alternate Paragraph (1) contains an additional requirement to the Code. It was, therefore, acceptable but unneces-sary to include in the Code Case. Paragraph (2) is Code Case 1607-1 was acceptable subject to the a variation in the volumetric examination technique interpretation that the stress limit designations of and was acceptable as written. Paragraph (3) contains " Upset," " Emergency," and " Faulted" do not neces-an additional requirement and is not a relaxation of sarily imply agreement with specified plant conditions the Code. It was, therefore, acceptable but unnecessary applicable to ASME Code Oass 2 and 3 components to include in the Code Case. for fluid systems. These designations should b established and justified in the design specifications.

1552-1 0E-29-77 Design by Analysis of Section 111, (N-3 5-1) 07-01-79 Cass 1 Valves N-55-1 04-05-84 Inertia and Continuous Drive Fric-1553-19 03-03-75 Upset Ileading and Roll Thread- (1609), 04-05-87 tion Welding,Section III, Divi-01-01-76 ing of SA-453 for Bol'.ing in Sec- sion I tion III 1614 12-17-7310 liydrostatic Testing of Piping Prior 1555-1 01-14-77 Certificaticm of Safety Relief Valves, 01-01-79 To or Following the Installation 01-01-78 Section III, Division 1 of Spray Nozzles for Section III, 1569 03-03 753 0 Design of Piping for Pressure Relief Casses 1,2, and 3 Piping Systems 07-01 79 Valve Station, Section 111 1620 03-02-74 Stress Category for Partial Penetra-(N-61) 01-08-79 tion Welded Penetrations, Section Code Case 1569 was accept.ble subject to compliance 01-08-82 III, Oass 1 Construction with the recommendations contained in Regulatory 1623 03-02-74 Design by Analysis for Section III, Guide 1.67, "Inrialiatian of Overpressure Protection 03 01-79 Cass I Sleeve-Coupled and Other Devices." Patented Piping Joints 1630-1 07-10-78 External Pressure Charts for liigh (N-66-1) 07-10-81 Yield Strength Carbon Steels and 9 Low Alloy Steels. (Yield Strength Code Case was annulled on date as indica.ed, but the annut.

ment was first indicated in Revision 12 to this guide. above 38 Ksi to 60 Ksi Inclusive.)

30 For Section III, Oass 1, 2, 3, and corrected date. MC 1.84-6

16 ,0-1 12-11-8111 External Pre:sure Charts for liigh 1665 11 04-74 Pressure-Temperature Ratings for (N 66-1) 12-05-84 Yield Strength Carbon Steels and (N-81) 07-01-78 Cass 1 Valves Made from 5 Cr-1/2 12 05-87 Low Alloy Steels. (Yield Strength Mo, Sectiem Ill O)

(

U above 38 Kai to 60 Ksi inclusive.)

Section III, Division 1, Cass 1, 2, 1672 11-04-74 Nuclear Valves for Section III, Divi-03-21-77 sion 1, Oass I, 2, 3 Construction 3, and MC 1675 12-16-74 Tubesheet to Shell or Formed liead 1633 04 29-74 Brazing of Seats to Cass 1,2, and 3 07-01 76 Weld Joints, Section 111. Gass 1 01-01-78 Valve Body or Borinets, Sectionlli Vessels 1635-112 08-12-74 Stress Oiteria for Section IH, Oass 2 16769 12-16-74 Clarification of Stress Intensities 07 01-77 atul 3 Valves Subjected to Upset, 07-01-75 in Curved Pipe or Welded Elbows, Emergency, and Faulted Operating Section 111 Conditions 1677 12-16-74 Clarification of Flange Dsign loads, (N-82) 03-01-79 Section III, Oass 1,2, and 3 Code Case 1635-1 was acceptable subject to the interpre- 1678 12-16-74 Butterfly Valves of Circular Croe tation that the stress limit designations of " Upset," 01-08-79 Section Larger than 24 in. NPS R 4

" Emergency," and " Faulted" do not necessarily imply 01 01-80 Section III, Cass 2 and 3 Constru ;- l agreement with specified plant conditions applicable tion j to ASME Code Cass 2 and 3 components for fluid 1681-113 03-03-75 Organizations Accepting Overall  ;

systems. These designations should be established and (N-84) 03-01-79 Responsibility for Section III Con-justified in the design specifications. struction 1683-1 03-01-76 Bolt Iloles for SectionIII, Cass 1, 1636-112 08 12-74 Stress Oiteria for Section Ill, Cass 2 07-01-76 2,3 and MC Component Supports 07-01-77 and 3 Pumps Subjected to Upset, 1685 04-28-75 Ibrnace Bmzire SecticnIII, Cass 1,

- Emergency, and Faulted Operating 01 01-78 2,3 and MC Construction Conditions 1686 03-03 75 Furnace Brazing, Section 111, Sub-01 01-78 section NF, Component Supports Code Case 1636-1 was acceptable subject to the inter- 1689-1 09-10-76 Alternate PWIIT Time and Tem-pretation that the stress limit designations of " Upset," 01-01-78 perature for SA-182 Grade F-22,

" Emergency," and " Faulted" do not necessarily imply SA-387 Grade 22, Glas 2, and agreement with specified plant conditions applicable SA-335 Grade P-22 Section III, i /* to ASME Code Cass 2 and 3 components for fluid Oass 1, 2, 3 and CS

( systems. These designations should be established and U justified in the design specifications. Code Case 1689-1 was acceptable subject to the follow-ing condition in addition to that specified in the Code 1651 08-12-74 Interim Requirements for Certifica- Case: The alternate postweld heat treatment should 03 01-79 tion of Component Supports, Sec- be prequalified along with the applicable welding tion Ill, Subsection NF procedure in accordance with ASME Section IX.

1657 11-04-74 Stress Criteria for Cass 2 and 3 07 01-77 Atmospheric and Low Pressure 1692 04-28-75 Rules fc4 Design of Welded Cass 1 (0-15 psig) Steel Storage Tanks (N-90) 07-01-78 Pumps 1659 11 04-74 Interconnection of Two Piping 1695-1 11-03-75 Brazing,Section III, Division 1, 07-01-77 Systems for Section III, Oass 1,2, 01-01-78 Cass 3 nnd 3 Construction 1700 11-03-75 Determination of Capacities of 1660 11-04-74 Overpressure Plotection Under Emer- (N-94) 03-19-79 Liquid Relief Valves,Section III, (N-77) 03 01-79 gency Operating Conditions for 03-19-82 Division 1, Oass 1, 2, and 3 Section III, Class 1 1701-2 07-09-79 Determination of Capacities of 1661 11-04-74 Postweld lleat Treatment P-No.1 (N-95-2) 07-09-82 Vacuum Relief Valves,Section III, 01-01-78 Materials for Section Ill, Cass 1 Division 1, Oasses 2,3, and MC and Vessels Division 2 Concrete Containments 1662 11 04-74 Shop Assembly of Components, Ap- l'02-1 07-11-77 Flanged Valves Larger than 24 01 01-78 purNnames and Piping kbassemblies (N-96-1) 01-01-80 inches for Section Ill, Division 1, for Eqction Ill, Cass 1,2,3 and MC Qass I, 2 and 3 Construction Construction 1703 06-30-75 Brazing of Copper Alloys Sectionill, 01-01-78 Cass 2 1706 06-30-75 Data Report Forms for Component 11 The Code Case was annelled on July 10,1981 (ASur manda- 12-31 75 Supports, Section 111, Cass 1,2 and 3 tory annulment date). It was reinstated on December 11,1981. 1711 11-03-75 Pressure Relief Valve Design Because of the circumstances and because there were no changes in the Cone Case, the NRC considers that this Case was in effect (N-100) 01-08-79 Rules,Section III, Division 1, 01-21-82 Class 1, 2 and 3

["

\

during the period of 7-10-81 through 12 11 12 Cade Cases 1635 and 1636 were approved by ASME on July 1,

.01-01-83.

I3 Code Case 16b1 was approved by ASME on 12-16-74 and 1974, and revised on August 12,1974. Because Code Cases 163s and 1636 were not in effect on September 1,1974, they are not revised on 3-3-75. Because Code Case 1681 was not in effect on included in this guide. March 31,1975,,.the. Code Case was not included in this guide.

1.84-7

Code Case 171I was acceptable subject to the following 1734 11-03-75 Weld Design for Use for Section III, conditions in addition to those conditions specified in (N-116) 01-01-78 Division 1, Cass 1,2,3 and MC Con-the Code Case. The following information should be struction of Component Supports provided in the Safety Analysis Report:

Code Case 1734 was acceptable subject to the follow-(1) If stress limits are used in excess of those specified ing conditions in addition to those conditions specified for the upset operating condition, it should be in the Code Case: If the configuration of Figure 1 of the demonstrated how the pressure rehef function is Code Case is used for Cass I and MC component ensured. Refer to paragraph 3.1, Section 1,of the supports, full penetration welds should be used. The Case for Cass 1 and pa. graph 3.2, Section 11, of application of the configuration shown in Figures 2 tbe Case for Cass 2 and 3 pressure relief valves. and 3 should be restricted to the welding of cans for spring encapsulation in spring hangers. In Figure 3, (2) If Case 1660 is to be used in cordunction with this the length of the leg of the fillet weld adjacent to Case, it should be stated that the stress limits the plate should be equal to the thickness of the of Case 1660 supersede those of paragraph exposed end of the plate; also, the leg of the fillet 3.2(b), Section 1, of Case 1711. Functional weld adjacent to the shell should be equal to the assurance of (1) above is required in all situations. thickness of the exposed end of the shell.

1739-4 11-17-80 Pump Internal items,Section III, j 1712 08-11-75 Nameplates and Stamping for Sec- (N-119-4) 12-01-83 Division 1, Cass 1, 2, and 3 l (N-101) 03-01-79 tion 111, Division 1, Cass 1, 2, 3 1744 03-01-76 Carbon Steel Pipe Flanges Larger and MC Construction as Referenced (N 121) 03-01-79 than 24in., Sectionlli, Division 1, in NA-8300 Cass 2 and 3 Construction 17189 08-11 **5 Design of Structural Omnections for 1765 04-26-76 Mxhining After flydrostatic Testing 07-01-/6 Linear Type Component Supports, 07-01-77 Gass 2 and 3 Construction, Section Section III, Division 1, Cass 1,2 and 111, Division 1 l 3 and MC 1768 06-29-76 Permanent Attachments to Contain-17199 08-11-75 Single-Welded, Full-Penetration Side- 01-01-78 ment Vessels- Class MC, Section 111, 07 01-76 wall Ilutt Joints in Atmospheric Division 1 Storage Tanks,Section III, Divi- 1769-1 02-16 77 Qualification of NDE Levcilli Per-sion 1, Cass 2 10-01-77 sonnel,Section III, Division 1 l

.1726 11-03-75 Refinement of Low Alloy Steel 1774-1 07-11-77 Minimum Wall'lhickness for Cass 2 l (N-109) 03-01-79 Ileat Affected Zone Under Overlay (N-142-1) 01-01-80 and 3 Valves, Section Ill, Division 1 Gadding,Section III, Division 1, 1775 08-13-76 Data Report Forms for Core Sup-Cass 1 Components 08-13-79 port Structures, Gass Ci, Section lif, 1727 12-22-75 Alternate Test Flui6, Section 111, Division 1 (N-110) 01 01 79 Division 1 1780-1 07-10-7810llydrostatic Testing and Stamping (N-146-1) 12-11-81 of Components, Section 111, Divi-Code Case 1727 was acceptable subject to the follow- 01-01-82 sion 1 Construction ing condition in addition to those conditions specified in the Code Case: The applicant should providejustifica- Code Case 1780-1 was acceptable subject to the follow-tion in the referencing Safety Analysis Report for the ing conditions in addition to those conditions specified fluid selected for use in the pressure test. The informa- in the Code Case: On a generic basis, the application of tion provided should demonstrate that the fluid selected the Code Case is limited to pumps and valves. Applica-will not have deleterious effects on the material of the tion to other components should be treated on a case-pressure boundary and that the fluid may be safely by-case basis. Each licensing application in which the used at the specified temperature and pressure of the Code Case is to be used should contain information test. When the fluid selected for cse is the operating showing that, as a muumum, the closure fixture will fluid, additional information is not required. impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a 1729 11-03-75 Muumum Edge Distance - Bolting complete pump assembly. A closure fixture for the (N-111) 03-01-79 for Section 111, Division 1, Cass1, part being tested that is similar in size and shape to 2, and 3 and MC Construction of the actual mating part is considered adequate to impose Component Supports these Icads. It is not intended that piping reaction 1732 11-03-75 Hardsurfaced Valves with inlet loadings be simulated in the hydrostatic testing.

(N-114) 01 01-79 Connections less than 2-in. Nominal Pape Size for Section Ill, Division 1 1783-1 01-14-77 Qualification of Nondestructive Cass 1 and 2 Construction 01-01-79 Examination Personnel, Section 1733 11 03-75 Evaluation of Safe Shut Down Earth- 111, Division 1 (N-115) 01-01-78 quake Loadings for Section Ill, Division 1, Cass MC Containment Code Case 1783-1 was acceptable subject to the Vessels following condition in addition to those conditions 1.84-8

n. .. .. ..

t specified in the Code Case: The first sentence of demonstrates that all intervening elements have been paragraph (1) should be replaced with the following: designed in compliance with the requirements of the

, .j O "The certification of the level 111 nondestructive respective design specification.

~i'j exandnation personnel for the purpae of this Section of the Code shall be the responsibility of the employer of the Level 111 Individual. If the employer is not a 1693 03-20-78 Welding Procedure Qualification of Certificate IIolder, then the verification of such certifi. (N-212) 01-01-81 Dissimilar Metal Wolds When "But-cate is the responsibility of the Certificate lloider." tering" with Alloy Weld Metal and lient Treatment May Be Involved, 1791 01-14-77 Projection Resistance Welding of Section 111, Division 1, and (N-154) 01-14-80 Valve Seats,Section III, Division 1, Section IX Qass 1,2 and 3 Valves N-214-2 05-25-83 Use of SA-351 Grade CN7M, for 3 1796 01-14-77 Body Neck Thickness Determina- 12-31-83 Valves,Section III, Division 1 (N-159) 07 01-78 tion for Valves with Inlet Connec- N-217-1 01-07-80 Postweld lieat Treatment of Weld tions 4-inch Nominal Pipe Size and 09-07-82 Deposit Gadding on Qasses 1, 2,3, a Smaller, Section 111, Division 1, 12-05-84 MC, and CS Itms,Section III, Divi-Oass 1, 2, and 3 09-05-85 sion 1 1808 02-16-77 F-Number Classification of Low 02-23-87 01-01-78 Alloy and Carbon Steel Bare Rod N-220 08-28-78 Code Effective Date for Component Electrodes Sections I, II, III, IV, V, 07-13-81 Supports, Section Ill, Division 1 Vill, and IX 07-13-84 1812 03-23-77 Size of lillet Welds for SocketWeld- N-226 11 20-78 Temporary Attachment of Thermo-(N-174) 01-07-80 ing of Piping, Swtion III, Division 1 01-01-80 couples,Section III, Division 1, 01-01-81 Cass 1, 2 and 3 Component Con-

!818 03-23-77 Welded Joints in Component struction (N-175) 07 01-79 Standard Supports,Section III, N-228 03-19-79 Alternate Rules for Sequence of Division 1 03 19-82 Completion of Code Data Report Forms and Stamping for Section 111, Code Case 1818 was acceptable subject to the follow- Cass 1,2,3 and MC Construction ing condition in addition to those conditions speci- N-229 01-08-79 Alternate Rules for Fabrication O fled in the Code Case: That portion of the unwelded 01-21-82 Welling 5B-148 Alloy CDA 954 for 01-21-85 Section III, Division 1, Cau 3 i\j housing that is limited to 90* maximum should include a mimmum of two sectors that are uniform 01-21-88 Construction in length. N-238 05-14-79 'liigh Temperature Furnace Brazing 01-01-82 of Seat Rings in Valve Bodies or N-179 07 11-77 Openings in Valves for Sectionlli, Bonnets for Section III, Division 0741-80 Division 1. Cars 1, 2 and 3 Con- 1, Cass 1, 2, and 3 Valves struction N-182 07-11 77 Alternate Rules for Procedure Qual-07-01-81 ification Base Material Orientation, Code Case N-238 was acceptable ru9ct to the follow-Section Ill, Division 1, Cass 2 and ing conditions in addition to those conditions specified 3 Construction in the Code Case: The furnace brazing process proce-N-184 07-11-77 Roll Threading of SA 453 Bolting dure qualification should include a verification fot 07 01 79 for Section III, Division 1, Oass 1, nonsensitization as given in ASTM A 262-70, Practices 2,3 or CS Construction A on E, or ASTM A 708-74 whenever materials subject N-189 08-29-77 Primary Membrane Plus Primary to sensitization are to be brazed. Documentation is 07-01-79 Bending Stress Intensity Limits required that a nonsensitizing brazing procedure was for Other Than Solid Rectangular employed for valves produced to this Case.

Sections for Section III, Division 1,

[ Qass MC Construction N-252 11-19-79 Low Energy Capacitive Discharge

( N-193 11 21-77 Use of SB41 and SB42 Bronze for 07-01-82 Welding Method for Temporary or 11-21-80 Section III, Division 1, Oass 3 Flange Permanent Attachments to Compo-

, and Socket Weld End Valves nents and Supports,Section III, 5

N-199 03-20-78 Intervening Elemt.nts,Section III, Division 1, and XI 01-01-81 Division 1, Gasses 1, 2, 3 and MC Component Construction Code Case N-252 was acceptable subject to the following conditions in addition to those conditions specified in f

i Code Case N-199 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: The applicant should indicate in the Safety Analysis Report the application, the material, k the Code Case: The applicant should provide informa- and the material thickness to which the strain gage or tion in the referencing Safety Analysis Report that thermocouple will be attached by CD welding.

1.84-9

N-261 05-15 80 Weld Procedure Qualification for N-300 11-17-80 PressureTemperature Ratings,Ilydro-12-13-82 Materials with Impact Require- 12-01-83 static Tests, and Minimum Wall ments for Section III, DMaion 1, Thickness of Valves,Section III, Oass 3 Construction Division 1, Cass 1 N-263 03-17-80 Alternate Thread Forms, Series and N-302 03-16-81 Tack Welding,Section III, Divi-03-17-83 Fits for Component Supports, Sec- 11-28-83 sion 1, Construction tion III, Division 1 N-309 05-11-81 Identification of Materials for Com-05-11-84 ponent Supports,Section III, Divi-Code Case N-263 was acceptable subject to the following sion I conditions in addition to those conditions specified in N 314 05-11-81 Alternate Rules for Thread Engage-the Code Case. The following information should be 05 11-84 ment, Section 111, Division 1 provided in the Safety Analysis Report: (1) a descrip-tion of the application, (2) a need for the use of the Code Case, and -(3) a demonstrate.on that support design Code Case N-314 was acceptable subject to the fol-will withstand maximum conditions of loadmg with lowing conditions in addition to those conditions c the worst combination of thread tolerance, specified in the Code Case. Applicants should iden-tify in their Safety Analysis Report: (1) the minimum N-271 03-17-80 Simplifled Method for Analyzing length of thread engagement and (2) the procedure 02-14-86 Flat Face Fla ges with Metal to used to establish thread engagement.

Metal Contact Outside the Bolt Orcle for Section III, C ass 2, N-320 07-13-81 Alternate IWT for SA487, Grade 3, and MC Construction 12-31-83 CA6NM,Section III, Division 1 l

N-272 05-15-80 Compiling Data Report Forms, N-328 12-11-81 Thermit Brazing or Welding of 01 01-82 Section III, Division 1 09-17-84 Nonstructural Attachments, Sec-N-275 05-15-80 Repair of Welds,Section III, 09-17-87 tion III, Division 1 12-07-62 Division 1 N-336 06-17-82 Examination of Welds Inaccessible 12-31-83 06-30-83 During Pressure Test,Section III, Division 1, Class MC Code Case N-275 was acceptable subject to the following N-339 06-17-82 Examina* ion of Ends of Fillet condition in addition to those conditions specified in the 09-17-84 Welds,Section III, Divi; don 1 Code Case: Use of the Code Case is applicable only when Classes 1, 2, and MC the removal of an indication requires that the full weld N-346 06-17-82 Explosive Welding, Section Ill, thicknesa be removed and, in addition, the backside of 05 19-85 Division I the weld assembly joint is not accessible for the removal 06-30-86 of examination material. If an indication is removed N-347 12 07-82 (bntinuous Ele-tric Resistance Seam and weld-metal layers still remain, it is not acceptatic 12-13-85 Welding of " w. 8 Materials for to gauge through the wallin order to qualify for use of Component Supports,Section III, the Code Case. Instead, examination of the cavity is Division I required when such an indication has been removed. N-349 07-16-82 Pressure Testing Piping Systems, Sec-12 31-85 tion III, Di ision 1 Classes 2 and 3 N-276 03 17-80 Welding of SA-358 Pipe, Sec- N-350 12-07-82 Postweld Heat Treatment-Thick-02 14-83 tion III, Dieision 1 09-05-85 ness of Material,Section III, Divi-02-14-86 sion 1 N-279 05-15-80 Use of Torquing as a Locking 07-13-81 Device for Section Ill, Division Code Case N-350 was acceptable subject to the follow-1, Cass 1, 2, 3, and MC Compo- ing condition in addition to those conditions speci-nent Supports fled in the Code Case: Applicants wishing to use this Case for other than P-1 materials should demonstrate Code Case N 279 was acceptable subject to the following that the use of this Case will not adversely affect the condition in addition to those conditions specified in required material properties.

the Code Case: When torquing or other preloading is used as a locking device and the joint is later unloaded N-3 59 12-13-82 Weld Connection for Coaxial Cylin-or disassembled, the bolting should be replaced unless 12-31-84 ders,Section III, Division 1, Class 1 it can be demonstrated or proved to the authorized N-376 05-25-83 Pressure Testing of Embedded nuclear inspector that the original bolting has not 07-30-86 Class 2 and 3 Piping,Section III, been permanently strained. Division 1 N-377 04-04-83 Effective 'Diroat 'Diickress of Partial N-280 05-15-80 Alternate Rules for Examination of 12-31-83 Penetration Groove Welds, Section 07-01-81 Welds in Section III, Oass 3 Storage III, Division 1, Casses 1, 2, and 3 Tanks N-383-1 07-18-85 Weld Repair of SA-182 Austenitic N-281 05-15-80 Welding Operator Ibrformance Qual- 09-05-85 Forgings,Section III, Division 1, 07-01-81 ification,Section III, Division 1 Classes 1, 2, and 3 1.84-10

Code Case N083 was acceptable subject to the following encing Safety Analysis Report that the service life of condition in adaition to those conditions specified in the elastomer diaphragm should not exceed the manufac-

/^ the Code Case: Applicants who apply the provisions turer's recommended service life. This recommended

(' of this Case to permit material manufacturers to weld service life should not exceed 1/3 of the mhnmum cycle repair austenitic forgings without re-solution heat treat- lifc as established by the requirements of paragraph 3 ment should provide justification to the NRC staff (via of the Code Case. In addition, the service life of the the Safety Analysis Report) why this is acceptable elastomer diaphragm should not exceed 5 years, and for their applications, including their evaluation of the the combined service and storage life of the clastomer susceptibility for stress corrosion cracking. diaphragm should not exceed 10 years.

N-397 02-20-84 Alternative Rules to the Spectral 1541-1 08-13-73 Ifydrostatic Testing of Embedded 02-20-87 Broadening Procedures of N-1226.3 09-30-76 Cass 2 and Oass 3 Piping for Sec-D for Casses I, 2, and 3 Piping, tion III Construction Section III, Division 1 1541-2 09-30-76 Ilydrostatic Testing of Embedded 05-15-78 Cass 2 and Cass 3 Piping for Sec-3 Code Case N-397 was acceptable subject to the follow- tion III, Division 1 Construction ing condition in addition to those conditions specified 1552 12-18-72 Design by Analysis of Section III, in the Code Case. The Code Case is acceptable for 08-29-77 Cass ! Valves specific plant applications on a case-by-case basis pend. 1553 12 18-72 Upset IIcading and Roll Threading ]

ing revision of Regulatory Guide 1.122, " Development 03 03-75 of SA 453 for Bolting,Section III  !

of Floor Design Response Spectra for Seismic Design 1555 12-18-72 0: ratification of Safety Relief Valves )

of Floor-Supported Equipment or Components." 01-14-77 on Liquids 1606 11 05-73 Stress Cnteria for Section III, Cass N 413 02-14-85 Mirumum Size of Fillet Welds 12-16-74 2 and 3 Piping Subjected to Upset, 02-14-88 for Subsection NF Linear Type Emergency, and Faulted Operating Supporte.,Section III, Division 1 Conditions ,

N-421 02-14-85 Brazing Using a Radiant Energy '

05-19-85 Souse,Section III, Division 1 Code Case 1606 was acceptable subject to the inter-06-30-86 pretation that the stress limit designations of " Upset,"

" Emergency," and " Faulted" do not necessarily imply I

C 3, Code Cases that were endoned by the NRC in a prior agreement with specified plant conditions applicable version of this guide and were superseded by revised Code to ASME Code Gass 2 and 3 components for fluid

\ Cases on or after July 1,1974, should be considered as systems. These designations should be established and not endorsed as of the date of the ASME action that justified in the design specifications.

approved the revised version of the Code Cases. These Code Cases that are no longer endorsed are listed in the 1607 11-05-73 Stress Criteria for Section III, Cas-following by number, effective dates,14 and title. I1-04-74 ses 2 and 3 Vessels Subjected to Upset, Emergency, and Faulted 1508:s 12-13-71 Allowable Stresses, Design Intensity Operating Conditions 06-30-75 and/or Yield Strength Values, Sec-tion I, III, and VIII, Divisions 1 and 2 Code Case 1607 was acceptable subject to the inter-1516-1 06-25-73 Welding of Seats in Valves for dec- pretation that the stress limit designations of " Upset,"

08-11-75 tion III Applications " Emergency," and " Faulted" do not necessarily imply 1539 11-06-72 Metal Dellows and Metal Diaphragm agreement with specified plant conditions applicable (N-30-1) 11-21-77 Stem Scaled Valves,Section III, to ASME Code Cass 2 and 3 components for fluid Casses 1, 2, and 3 systems. These designations should be established and 1540-1 03-03-73 Elastomer Diaphragm Valves. Sec- justified in the design specifications.

01-14-77 tion III, Casses 2 and 3 1540-2 01-14-77 Elastomer Diaphragm Valves, Sec- 1609-1 03-01-76 Inertia and Continuous Drive (N-31) 01-07-80 tion III, Cass 2 and 3 (N-55) 08-28-78 Friction Welding,Section I, III, 02-14-83 07-13-81 IV, VIII, Division 1 and 2, and 07-18-85 04-05-84 IX 1621-2 05-25-77 Internal and External Valve Items, Code Case 1540-2 (N-31) was acceptable subject to the (N 62-2) 05-15-80 Section III, Division 1, Cass 1, 2 following conditions in addition to those conditions 05-25-83 and 3 Line Valves specified in the Code Case: Each applicant who 07-18-85 applies the Code Case should indicate in the refer-Code Case 1621-2 (N-62-2) was acceptable subject to i

[ 34 Earlier date-date Code Case was approved by ASME; later the following condition in addition to those condi-daie-date revision of Code Case was approved by ASME. tions specified in the Code Case: The Code requires 15Code Case 1508 is no longer listed by ASME as a Section til .

a adadurers med Code Case and is therefore deleted from the acceptable.11stina. the provisions of NCA 4000, " Quality Assurance,"

1.84-11

and, in addition, Oass 3 valve manufacturers should and 3 of the Code Case should be evaluated on a also meet the provisions of NCA 4000, case-by-case basis.

N42-3 07 18-85 Internal and External Valve items, 1739-2 08-28-78 Pump Internal Items, Section 111, 09-05 85 Section III, Division 1, Cass 1, 2 (N-119-2) 08-25-80 Division 1, Cass 1,2,and 3 and 3 Line Valves 1739-3 08-25-80 Pump Internal Items, Section 111, (N-119-3) I l-17-80 Division 1, Oass 1,2, and 3 Code Case N-62-3 was acceptable subject to the follow- 1739 4 02-20-8416 Pump Internal items, Section 111, ing condition in edaition to those conditions speci- (N-119-4) 07-18-85 Division 1, Oass 1, 2, and 3 fied in the Code Case: The Code requires that Cass 1 N-I l 9-5 07-18-85 Pump Internal items,Section III, and Cass 2 valve manufacturers meet the provisions 09-05-85 Division 1, Cass 1, 2, and 3 of NCA 4000, " Quality Assurance," and, in addition, 1761 04-26-76 Use of SB-148 Alloy CA954 for Sec-Cass 3 valve manufacturers should also meet the 01-14-77 tion 111, Division 1, Class 2 or 3 provisions of NCA 4000. Flanged End Valves 1761-1 01-14-77 Use of SB-148 Alloy CA954, 1630 11-04-74 External Pressure Charts for fligh (N-133) 01-07-80 Section lit, Division 1, C ass 3 (N-77) 07 10-78 Yield Strength Otttrm Steels and low 04-02-82 Alloy Steels. (Yield strength above N-133-1 04-02-82 Use of SB-148 Alloys 952 and 954, 38 Ksl to 60 Ksiinclusive.)Fer Sec- 05 19-85 Section III, Division 1, C ass 3 tion III, Class 1,2,3, and MC; and N-133-2 05-19-85 Use of SB-148 Alloys 952 and 954 Section Vill, Division I and 2 07-18-85 Sectic,n 111, Division 1, Class 3 1683 03-03-75 Bolt flotes for Section III, Division 1769 08-13-76 Qualification of NDE leveilli Per-03-01-76 1, Cass 1,2,3 and MC Component 02-16-77 sonnel, Section 111, Division 1 Supports 1774 08-13-76 Minimum Wall lhickness for Oass 2 1689 06-30-75 Alternate PWIIT Time and Temper- 07-11 77 and 3 Valves, Sectionill, Division 1 09 10-76 ature for SA-182 Grade F22 Section 1780 09-10-76 Ilydrostatic Testing and Stamping III, Oass 1, 2. 3 and CS 03-10-78 of Pumps for Gass 1 Construction, Section 111, Division 1 Code Case 1689 was acceptable subject to the follow-ing condition in addition to that specified in the Code Code Case 1780 was acceptable subject to the follow-Case: The alternate postweld heat treatment should ing conditions in addition to those conditions specified be prequalified along with the applicable wriding pro- in the Code Case: Each licensing application in which cedure in accordance with ASME Section IX. the Code Case is to be used should present informa-tion that satisfactorily demonstrates that the subassem-1695 04-28-75 Brazing, Section 111, Class 3 bly tests adequately simulate the pressure loadings.

I l-03-75 Also, the closure fixture for the test subassembly should 1701 06-30-75 Determination of Capacities of adequately simulate the rigidity of adjacent subassem-03-20-78 Vacuum Relief Valves Section Ill, blies and also simulate the interface loadings from Cass MC adjacent subassemblies that would result from a 1701 1 03 20-78 Determination of Capacities of hydrostatic pressure test of a complete pump assembly.

(N-95-1) 03 19-79 Vacuum Relief Valves,Section III, As a minimum, the closure fixture should impose 07-09 79 Division 1 and 2, Cass MC loads that result in stresses equal to or greater than 1702 06-30-75 Flanged Valves Large. than 24 those induced during the hydrostatic test of a 07-11-77 inches for Section Ill, Oass 1, 2 complete pump assembly. It is not intended that and 3 Construction piping reaction loadings be simulated in the hydro-1 20 08-11-75 Weld Fnd Preparation for SectionIII, static testing.

03-01-76 Division 1 Construction 1783 09-10-76 Qualification of Nondestructive Code Case 1720 was ac eptable subject to the fobowing 01 14-77 Personnel,Section III, Division I condition in addition to those conditions specified in the Code Case: Weld end preparations other than those Code Case 1783 was acceptable subject to the follow-shown in Figures 1, 2, and 3 of the Code Case are not ing condition in addition to those conditions specified acceptable on a ger.eric basis. Such alternative end in the Code Case: The first sentence of paragraph (1) preparations should be treated on a case-by case basis. should be replaced with the following: "The certifica-tion of the Level 111 nondestructive examination per-1720-1 03 01-76 Weld End Preparation for SectionIII, sonnel for the purposes of this Section of the Code Il 20-78 Division 1 Construction shall be the responsibility of the employer of the Code Case 1720-1 was acceptable subject to the follow- ' d '

ing condition in addition to those conditions speci- mandaNy$ nuts"nt*Ist$.i* re$ta7eYon fe$rubo, fied in the Code Case: The acceptance of weld end 1984. necause of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was preparations other than those shown m, Figures 1, 2, in errect durins the penod or 12-s-83 through 2 2o44.

1.84-12

level Ill individual. If the employer is not a Certifi. N-260-1 07-18-85 Weld Repair of SA-182 Type 316 cate Holder, then the verification of such certificate 12-05-85 Gasses 1, 2, 3, and MC is the responsibility of the Certificate liolder."

1791 03-17-8017 Projection Resistance Welding of Code Case N-260-1 was acceptable subject to the (N-154) 09-09-82 Valve Seats,Section III, Divi- following condition in addition to those conditions 09-05-85 sion 1, Cass 1, 2 and 3 Valves specified in the Code Case: Type 308 L welding 12-05-85 materials should not be used to repair grade F 316 N 1797 03-23 77 Finned Tubing for Construction, forgings because of the difference in strength levels.

(N-160) 03-17-80 Section III, Division 1 09-07-82 N-304 06-11-81 Use of 20Cr-25Ni-6Mo (Alloy UNS 07-18-85 04-05-84 NOE366) Welded Tubes for Sec-N-192 01-09-78 Use of Flexible Ilose for Sec. 07-12-84 tior III, Division 1, Classes 2 and 08-30-79 tion 111, Division 1, Cass 1, 2, 3 Construction and 3 Construction N-304-1 07-1244 Use of 20Cr-25Ni6Mo (Alloy UNS 05-19-85 NO8366) Welded Tubes for Sec-Code Case N-192 was acceptable subject to the follow- tion 111, Division 1, Classes 2 and ing conditions in a41dition to those conditions speci- 3 Construction fled in the Code Case. The applicant should indicate N-304-2 05-19-85 Use of SB 676 20Cr-25Ni 6Mo system application, design and operating pressure, and 12-05-85 (Alloy UNS N08366) Welded Ibbes, pressure-temperature rating of the flexible hose. Data Section Ill, Division 1, Casses 2 to demonstrate compliance of the flexible hose with and 3 NC/ND-3649, particularly NC/ND-3649.4(e), are required N-304-3 12-05-85 Use of SB-676 20Cr-25Ni-6Mo (Alloy to be furnished with the application. 02-23-87 UNS N08366) Plate, Sheet, Strip and Welded Pipes,Section III, N-192-1 08-30-79 Use of Flexible liose for Section Division 1, Cl, asses 2 and 3, 09-16-81 111, Division 1, Cass 1, 2, and 3 N-309 0917-84 s identification of Materials for Construction 12-05-85 Component Supports,Section III, Division 1 Code Case N-192-1 was acceptable subject to the follow- N-318 07-13-81 Procedure for Evaluation of the ing conditions in addition to those conditions specified 02-20-84 Design of Rectangular Cross Sec-in the Code Case: The npplicant should indicate system tion Attachments on Cass 2 or application, design and operating pressure, and pressure-3 Piping,Section III, Division 1 temperature rating of the flexible hose. Data to demon-strate compliance of the flexible hose with NC/ND-3M9, ' Code Case N318 vas acceptable subject to the follow-particularly NC/ND-3649.4(e), are seguired to be furnished with the application. ing conditions in addition to those conditions speci-fied in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug N-196 01-09-76 Exemption from the Shakedown attachment, (2) the piping system involved, and (3) the 01-08-79 Requirements When Plastic Anal- location in the system where the Case is to be applied.

ysis is Performed for Section III, Division 1, Cass 1 Construction N-318-119 02-20-84 Procedure for Evaluation of the 07-12-84 Design of Rectangular Cross Sec-N-214 05-15-78 Use of SA 351, Grade CN7M, for 07-13-81 Valves for Section 1:1, Division l' tion Attachments on Cass 2 or 3 Piping, Section Ill, Division 1 09-07-82 Construction N-214-1 09-07-82 Use of SA-351 Grade CN7M, for 05-25-83 Valves, Sectwn III, Division 1 Code Case N-318-1 was acceptable subject to the N-237 07-09-79 Ilydrostatic Testmg of Internal following conditions in addition to those conditior.a 0- -82 Piping,Section III, Div2sion 1 specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of N-23 7-1 09-07-82 Hydrostatic Testing of Intern 1 lug attachment, (2) the piping system involved, and 05-25-83 Piping,Section III, Division 4, (3) the location in the system where the Case is to Gasses 2 and 3 be applied.

N-260 01-07-80 Weld Repair of SA-182 Type 316 05-25-83 Forgings, Section Ill, Division 1, 07-18-85 Casses 1, 2, 3, and MC is The Code Case was annulled on May 11,1984 (AsME manda-tory annultnent date). It was reinstated on September 17, 1984.

I Because of the circumstances and because there were no chanses in The Code Case was annulled on January 14,1980 (ASME the Code Case,the NRC considers that this Case was in effect during mandatory annulment date). It was reinstated on March 17,198o. the period of 5-11-84 through 917-64.

Because of the circutnstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during 19 The conditional acceptance was inadvertently omitted in the period of 1-14-80 through 3-17-80. Rension 23 of this guide.

1.84-13

N-318-2 07-12-84 Procedure for Evaluation of Ge dures have been employed. Such uw should be limited 09-05-85 Design of Rectangular Cross Sec- ody to response spectral analyses (similar to that used tion Attachments on Cass 2 or 3 in the study supporting its acceptance - Reference Piping, Section Ill, Division 1 NUREG/CR 3526). The acceptance of the use with other types of dynamic analyses (e.g., time-history Code Case N-318-2 was acceptab!c subject to the analysis) is pending further justification. (3) When foGowing conditions in addition to those conditions used for reconciliation work or for support optimiza-specified in the Code Case. Applicants should identify tion of existing designs, the effects of increased in their Safety Analysis Report: (1) the method of motion on existing clearances and on line mounted lug attachment, (2) the piping system involved, and equipment should be checked. (4) This Code Case is (3) the location in the system where the Case is to not appropriate for analyzing the dynamic response be applied. of piping systems using supports designed to dissipate energy by yielding (i.e., the design of which is covered N-345 06-17-82 Attachment of AMS $382 Alloy 31 by Code Case N-420). (5) This Code Case is not 12-13-82 Seat Rings by Friction Welding, Sec- applicable to piping in which stress corrosion crack-tion III, Division i,Casses t,2, and 3 ing has occurred unless a case-specific evaluation is N-362 02 14-83 Alternate Rules for Pressure Testing made and is reviewed by the NRC staff.

05 25-83 of Containment items, Section 111, Division 1 4. Code Cases for Gass I components that are not N-3621 05-25-83 Pressure Testing of Containment on the approved list of this guide (paragraph C.1) or 07-12-84 Items,Section III, Division 1, other regulatory guides, or for which authorization by Gasses 1, 2, and MC the Commission has not been granted, are not accept-N-383 10 05-83 Weld Repair of SA-182 Austenitic able for Gass I components.

07-18-85 Forgings, Section 111, Division 1, Casses 1, 2, and 3 5. Code Cases for other classes of components that are not on the approved list of this guide (paragraph Code Case N-383 was acceptable subject to the follow- C.1) or other regulatory guides should be considered not ing ccadition in addition to those conditions specified acceptable on a genene basit in the Code Case: Applicants who apply the provi-sions of this Case to permit material manufseturers D. IMPLEMENTATION to weld repair austenitic forgings without re-solution heat treatment should provi'le justification to the NkC The purpose of this section is to provide information staff (via the Safety Analys3 Report) why this is to applicants regarding the use of this regulatory guide.

acceptable for their applications, including their evaluation of the susceptibility for stress corrosion 1. Except for those Code Cases that have 1een annulled cracking. by action of the ASME, the NRC staff has found the Code Cases listed in this regulatory guide under regula-N-411 09-17-84 Alternative Damping Values for tory position C.1 acceptable for appropriate use. Other 02-20-86 Seismic Analysis of Classes 1, 2, Code Cases may be considered for use in accordance and 3 Piping Sections, Section !!!, with footnote 6 of the Codes and Standards rule, Division 1 50.55a of 10 CFR Part 50.

Code Case N-411 was acceptable subject to the follow- 2. Components ordered to a specific version of a ing conditions in addition to those conditions specified Code Case need not be changed because a subsequent in the Code Case: (1) The damping values specified revision to the Code Case is listed as the approved may be used in analyzing piping response for seismic version in this guide.

and other dynamic loads being filtered through build-ing structures previded response mode frequencies are 3. Components ordered to a Code .Cas that was limited to 33 liz and below. Within this range, the previously approved for use need not be changed be-Code Case damping should be used completely and cause the Code Case has been subsequently annulled.

consistently, if used at all. (For equipment other than piping, the damping values specified in Regulatory 4. Code Cases on the approved list may be applied Guide 1.61, " Damping Values for Seismic Design of to components that were in process of construction Nuclear Power Plants, should be used.) (2) The prior to the effective date of the Code Case withm the damping values specified may be used only in those limits specified in the Code Case and applicable regula-analyses in which current seismic spectra and proce- tions or recommended in other regulatory guides.

O 1.84-14

APPENDIX NUMERICAL LISTING OF CODE CASES

  • N-31 1 N-247 N-368 N 62-4 N-260-2 N-369 1720-2 (N-106-2) N-262 N-391 N-1194 N-282 N-392 1745 (N 122) N-284 N-393 N-133-3 N-292 N-394 i

N-154-1 l N-304-4 N-410 1792-2 (N 155-2) N-3091 N-411-1 o

N-160-1 N-313 N 412 N-192-2 N-3 :5 N-414 N 196-1 N-316 N420 N-215 N-318-3 N-430 N-233 N-319 N433 N-237-2 N-341 N442 N-240 N-345-1 N-453 N-241 N-357 NsiS4 N-243 N-362-2 N-455

  • Code Case 1625 was inadvertently listed in the appendix of Regulatory Guide 1.84, Rerision 1. This Code Case is covered an Regulatory Guiae 1.S5, Revision 1.

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

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