Regulatory Guide 1.84

8, Design and Fabrication Code Case Acceptability ASME Section III Division 1

ML13038A091
Person / Time
Issue date:	04/30/1992
From:	Office of Nuclear Regulatory Research
To:
References
RG-1.084, Rev. 28
Download: ML13038A091 (18)

U.S. NUCLEAR REGULATORY COMMISSION Revision 28 April 1992 REGULATORY GUIDE

OFFICE OF NUCLEAR REGULATORY RESEARCH

REGULATORY GUIDE 1.84 DESIGN AND FABRICATION CODE CASE ACCEPTABILITY

ASME SECTION III DIVISION 1

A. INTRODUCTION

or modified as necessary to ensure a quality product in keeping with the required safety function.

Section 50.55a, "Codes and Standards," of

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

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

§50.55a(a) (2) (ii), which requires that proposed alter- natives to the described requirements or portions This regulatory guide lists those Section III

thereof provide an acceptable level of quality and ASME Code Cases oriented to design and fabrication safety. that are generally acceptable to the NRC staff for im- plementation in the licensing of light-water-cooled nu- General Design Criterion 1, "Quality Standards clear power plants.

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

standards are used, Criterion 1 requires that they be

B. DISCUSSION

identified and evaluated to determine their applicabil- ity, adequacy, and sufficiency and be supplemented The ASME Boiler and Pressure Vessel Commit- tee publishes a document entitled "Code Cases." 1 Generally, the individual Code Cases that make up this document explain the intent of Code rules or pro-

'Copies may be obtained from the American Society of Me- chanical Engineers, United Engineering Center, 345 East 47th vide for alternative requirements under special cir- Street, New York, New York 10017. cumstances.

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

Regulatory Guides are issued to describe and make available to the pub- lic methods acceptable to the NRC staff of implementing specific parts of the Commission's regulations, to delineate techniques used by the 1. Power Reactors 6. Products staff in evaluating specific problems or postulated accidents, or to pro- 2. Research and Test Reactors 7. Transportation vide guidance to applicants. Regulatory Guides are not substitutes for 3. Fuels and Materials Facilities 8. Occupational Health regulations, and compliance with them is not required. Methods and 4. Environmental and Siting 9, Antitrust and Financial Review solutions different from those set out in the guides will be acceptable if 5. Materials and Plant Protection 10. General they provide a basis for the findings requisite to the issuance or continu- ance of a permit or license by the Commission.

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

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

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

experience.

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

Most Code Cases are eventually superseded by to accommodate new Code Cases and any revisions revision to the Code and then are annulled by action of existing Code Cases.

of the ASME. In such cases, the intent of the annulled Code Case becomes part of the revised

C. REGULATORY POSITION

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

those cases applicable to Section III that are oriented toward design and fabrication. The categorization of Code Cases used in this guide is intended to facilitate the Code Case listing and is not All published Code Cases in the area of design intended to indicate a limitation on its usage.

and fabrication that are applicable to Section III of a. Design-oriented Code Cases (Code Case the Code and were in effect on April 30, 1990, were reviewed for inclusion in this guide. In addition to the number, date of ASME approval,3 and title):

listing of acceptable Code Cases, this revision of the guide includes listings of (1) Code Cases that were (1) Code Cases applicable to piping design:

identified as acceptable in a prior version of this N-160-1 07-18-85 Finned Tubing for Construc- regulatory guide and that were annulled after the 07-18-88 tion,Section III, Division 1 original issuance of this guide (June 1974) and

(2) Code Cases that were identified as acceptable in N-453-1 11-30-88 Nickel-Chromium-Molybde- num-Copper Stainless Steel a prior version of this regulatory guide and that were superseded by revised Code Cases after the original (UNS N08925) Seamless and issuance of this guide (June 1974). Code Cases that Welded Pipe for Class 2 and 3 are not listed herein are either not endorsed or will Construction Section III, Divi- require supplementary provisions on an individual sion 1 basis to attain endorsement status. N-454 12-07-87 Nickel-Chromium-Molybde- num-Copper Stainless Steel The endorsement of a Code Case by this guide constitutes acceptance of its technical position for (UNS N08925) Wrought Fittings for Class 2 and 3 applications not precluded by regulatory or other Construction Section III, Divi- requirements or by the recommendations in this or sion 1 other regulatory guides. Contingent endorsement is N-455 12-07-87 Nickel-Chromium-Molybde- indicated in regulatory position C.1.c for specific num-Copper Stainless Steel cases. However, it is the responsibility of the user to (UNS N08925) Forged make certain that no regulatory requirements are Flanges and Fittings for Class violated and that there are no conflicts with other

2 and 3 Construction Section recommended limitations resulting from Code Case III, Division 1 usage.

Acceptance or endorsement by the NRC staff (2) Code Cases applicable to valve design:

applies only to those Code Cases or Code Case N-133-3 07-18-85 Use of SB-148 Alloys 952 and revisions with the date of ASME approval as shown 07-18-88 954 Section III, Division 1, in the regulatory position of this guide. Earlier or Class 3 later revisions of a Code Case are not endorsed by this guide. New Code Cases will require evaluation by N-313 05-11-81 Alternate Rules for Half- the NRC staff to determine if they qualify for 11-28-83. Coupling Branch Connec- inclusion in the approved list. Because of the 11-28-86 tions,Section III, Division 1

2 continuing change in the status of Code Cases, it is A numerical listing of the Code Cases appears in the ap- pendix.

planned that this guide will require periodic updating 3 When more than one date is given, the earlier date is that on which the Code Case was approved by the ASME and the later date(s) is that on which the Code Case was reaffirmed by

• Lines indicate substantive changes from Revision 27. the ASME.

1.84-2

N-394 02-20-84 Restricting Lift to Achieve consistently, if used at all. (For equipment other

07-30-86 Reduced Relieving Capacities than piping, the damping values specified in

07-30-89 of Full Lift, Nozzle Type, and Regulatory Guide 1.61, "Damping Values for Flat Seated Safety and Safety Seismic Design of Nuclear Power Plants," should Relief Valves for Compress- be used.) (2) The damping values specified may ible Fluid Applications, Sec- be used only in those analyses in which current tion III, Division 1, Classes 2 seismic spectra and procedures have been em- and 3 ployed. Such use should be limited only to re- N-410 12-05-84 Certified Relieving Capacities sponse spectral analyses. (similar to that used in

07-27-88 of Pressure Relief Valves the study supporting its acceptance-Reference Having Set Pressure of 3 psig NUREG/CR-3526). The acceptance of the use up to but Not Including 15 with other types of dynamic analyses (e.g., time- psig Installed for Overpressure history analysis or independent support motion Protection of Compressible method) is pending further justification. (3)

Fluid Systems,Section III, When used for reconciliation work or for support Division 1, Classes 2 and 3 optimization of existing designs, the effects of in- N-442 02-23-87 1977 Addendum to ANSI/ creased motion on existing clearances and on

04-30-90 ASME PTC 25.3-1976, line mounted equipment should be checked. (4)

Safety and Safety Relief This Code Case is not appropriate for analyzing Valves, Class 1, 2, 3, and the dynamic response of piping systems using MC,Section III, Division 1 supports designed to dissipate energy by yielding (i.e., the design of which is covered by Code Case N-420). (5) This Code Case is not applica-

(3) Other Code Cases related to design: ble to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is N-119-6 09-05-85 Pump Internal Items, Section made and is reviewed by the NRC staff.

07-27-88 III, Division 1, Class 1, 2, and 3 N-412 04-15-85 Alternative Rules for Witness- N-196-1 01-08-79 Exemption from the Shake- 04-15-88 ing the Piping System Pressure

01-21-82 down Requirements When Tests of Classes 1, 2, and 3

01-21-85 Plastic Analysis is Performed Piping Systems,Section III,

.01-21-88 for Section III Division 1, Division 1 Class 1 and CS Construction N-420 02-14-85 Linear Energy Absorbing Sup- N-243 08-30-79 Boundaries Within Castings 02-14-88 ports for Subsection NF,

07-16-82 Used for Core Support Struc- Classes 1, 2, and 3 Construc-

05-19-85 tures,Section III, Division 1, tion,Section III, Division 1

05-19-88 Class CS

Code Case N-420 is acceptable subject to the fol- N-247 07-09-79 Certified Design Report Sum- lowing conditions in addition to those conditions

01-21-82 mary for Component Stan- specified in the Code Case. Each applicant desir-

01-21-85 dard Supports,Section III,

ing to use the Code Case should provide the fol-

01-21-88 Division 1, Class 1, 2, 3 and lowing information prior to implementing the MC

Case: (1) indication of systems in which energy- N-309-1 12-05-85 Identification of Materials for absorbing supports are to be used, (2) fatigue de-

07-27-88 Component Supports, Section sign, (3) piping system analysis results consider- Ill, Division 1 ing inelastic behavior of supports, and (4) plans N-319-1 07-24-89 Alternate Procedure for for inservice examination of energy absorbers.

Evaluation of Stresses in Butt Weld Elbows in Class 1 Pip- ing,Section III, Division 1 N-433 12-16-86 Non-Threaded Fasteners for N-411-1 02-20-86 Alternative Damping Values

12-16-89 Section III, Division 1, Class

02-20-89 for Response Spectra Analysis

1, 2, and 3 Component and of Classes 1, 2, and 3 Piping, Piping Supports,Section III,

Section III, Division 1 Division 1 N-476 05-06-89 Class 1, 2, 3, and MC Linear Code Case N-411-1 is acceptable subject to the Component Supports-Design following conditions in addition to those condi- Criteria for Single Angle tions specified in the Code Case: (1) The Code Members,Section III, Divi- Case damping should be used completely and sion 1, Subsection NF

1.84-3

b. Fabrication-oriented Code Cases: 2. In equation (4) the first + sign should be changed to an = sign.

(1) Code Cases related to welding and f*

brazing: N-392-1 12-11-89 Procedure for Evaluation of the Design of Hollow Circular N-154-1 12-05-85 Projection Resistance Welding Cross Section Welded Attach-

12-05-88 of Valve Seats,Section III, ments on Classes 2 and 3 Pip- Division 1, Class 1, 2 and 3 ing,Section III, Division 1 Valves Code Case N-392-1 is acceptable subject to the N-262 01-07-80 Electric Resistance Spot following conditions in addition to those condi-

09-07-82 Welding for Structural Use in tions specified in the Code Case: Applicants

09-05-85 Component Supports, Section should identify in their Safety Analysis Report:

07-27-88 III, Division 1 (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys- N-304-4 02-23-87 Use of 20Cr-25Ni-6Mo (Alloy tem where the Case is to be applied.

12-11-89 UNS N08366) Plate, Sheet, Strip and Welded Pipe, Class N-393 11-28-83 Repair Welding Structural

2"and 3 Section III, Division 1 07-30-86 Steel Rolled Shapes and N-315 02-14-83 Repair of Bellows,Section III, 07-30-89 Plates for Component Sup-

02-19-86 Division 1 ports,Section III, Division 1

02-19-89 N-395 12-11-89 Laser Welding,Section III,

Division 1 Code Case N-315 is acceptable subject to the fol- N-452 03-08-89 Specialized Subcontracted lowing conditions in addition to those conditions Welding Process (Electron specified in the Code Case: Prior to implementa- Beam Welding),Section III,

tion of the Code Case, the applicant should pre- Division 1 sent a description of the repair and a justification N-464 03-08-89 Laser Welding of Lap-Joints, why the bellows should be repaired rather than Section III, Division 1, Class 2 replaced. Following receipt of approval for the and 3 Construction repair, but prior to making the repair, the appli- cant should present the results of the qualifica- (2) - Other Code Cases related to tion on the full-scale facsimile bellows, including fabrication:

the"design requirements, to ensure that the repair meets the requirements of the design specifica- N-215 05-15-78 Integrally Finned . Titanium tion. Tubes,Section II, Division 1, Class 3 Construction N-316 12-11-81 Alternate Rules for Fillet N-240 03-19-79 Hydrostatic Testing of Open

09-17-84 Weld Dimensions for Socket 01-21-82 Ended Piping,Section III,

09-17-87 Welded Fittings,Section III, 09-17-84 Division 1 Division 1, Class 1, 2, and 3 09-17-87 N-241 07-09-79 Hydrostatic Testing of Piping, N-345-1 12-13-82 Attachment of AMS 5382 01-21-82 Section III, Division 1

06-30-88 Alloy 31 Seat Rings by Fric- 09-17-84 tion Welding,Section III, 09 -17-8 7 Division 1, Classes 1, 2, and 3 N-368

12-11-89

07-06-83 Pressure Testing of Pump I

N-391-1 07-24-89 Procedure for Evaluation of the Design of Hollow Circular 06-30-87 Discharge,Section III, Divi- Cross Section Welded Attach- sion 1, Classes 2 and 3 ments on Class 1 Piping, Sec- Code Case N-368 is acceptable subject to the fol- tion III, Division 1 lowing condition in addition to those conditions specified in the Code Case: Applicants using this Code Case N-391-1 is acceptable subject to the Code Case should provide information to dem- onstrate that the length of discharge piping is rea- following conditions in addition to those specified in the Code Case: The following typographical sonably short.

errors need to be corrected:

N-369 02-14-83 Resistance Welding of Bel-

1. In equation (3) the + sign should be 02-19-86 lows,Section III, Division 1 changed to an = sign. 02-19-89 I

1.84-4

N-414 02-20-86 Tack Welds for Class 1, 2, 3 1720-2 11-20-78 Weld End Preparation for

02-20-89 and MC Components and (N-106-2) 08-28-81 Section III, Division 1 Con- Piping Supports,Section III, 09-17-84 struction Division 1 09-17-87 N-430 02-28-86 Alternative Requirements for Code Case 1720-2 (N-106-2) is acceptable sub-

02-28-89 Welding Workmanship and ject to the following condition in addition to Visual Acceptance Criteria for those conditions specified in the Code Case: The Class 1, 2, 3 and MC Linear- acceptance of weld end preparations other than Type and Standard Supports, those shown in Figures 1, 2, and 3 of the Code Section III, Division 1 Case should be evaluated on a case-by-case Code Case N-430 is acceptable subject to the fol- basis.

lowing conditions in addition to those conditions 1792-2 01-08-79 Fiberglass Reinforced Ther- specified in the Code Case: (1) The applicant (N-155-2) 01-21-82 mosetting Resin Pipe, Section should demonstrate that.the applicable supports 01-21-85 III, Division 1 are not subject to cyclic loading in excess of 01-21-88

20,000 cycles and (2) the first sentence of

3.0(f) (1) should be replaced with the following: Code Case 1792-2 (N-155-2) is acceptable sub-

"For material 3/8 in. and less nominal thickness, ject to the following condition in addition to undercut depth of 1/32 in. on one side of the those conditions specified in the Code Case: The member for the full length of the weld, or 1/32 applicant should comply with the additional re- in. on one side for one-half the length of the quirements that are specified in Regulatory Guide weld, and 1/16 in. for one-fourth the length of 1.72, "Spray Pond Piping Made from Fiberglass- the weld on the face of a rectangular tube or Reinforced Thermosetting Resin."

one-fourth the length of the weld on the same N-192-2 09-16-81 Use of Braided Flexible Con- side of the member is acceptable." 09-17-84 nectors,Section III, Division

09-17-87 1, Class 2 and 3 c. Code Cases with contingent approval: Code Case N-192-2 is acceptable subject to the following conditions in addition to those condi- N-31-1 07-18-85 Elastomer Diaphragm Valves, tions specified in the Code Case: The applicant

07-18-88 Section III, Class 2 and 3 should indicate system application, design and Code Case N-31-1 is acceptable subject to the operating pressure, and pressure-temperature following conditions in addition to those condi- rating of the flexible hose. Data to demonstrate tions specified in the Code Case: Each applicant compliance of the flexible hose with NC/

who applies the Code Case should indicate in the ND-3649, particularly NC/ND-3649.4(e), are re- referencing Safety Analysis Report that the serv- quired to be furnished with the application.

ice life of the elastomer diaphragm should not N-284 08-25-80 Metal Containment Shell exceed the manufacturer's recommended serv- 05-25-83 Buckling Design Methods, ice life. This recommended service life should

07-30-86 Section III, Division 1, Class not exceed 1/3 of the minimum cycle life as es-

07-30-89- MC

tablished by the requirements of paragraph 3 of the Code Case. In addition, the service life of the Code Case N-284 is acceptable subject to the fol- elastomer diaphragm should not exceed 5 years, lowing condition in addition to those conditions and the combined service and storage life of the specified in the Code Case: Prior to implementa- elastomer diaphragm should not exceed 10 years. tion of the Code Case, the applicant must dem- onstrate to the satisfaction of the NRC staff (via Safety Analysis Report) that any axisymmetric

12-11-89 Internal and External Valve N-62-6 techniques that are proposed will be applicable to Items,Section III, Division 1, a vessel having large asymmetric openings and Class 1, 2 and 3 that the overall margin used to prevent shell Code Case N-62-6 is acceptable subject to the buckling is acceptable.

following condition in addition to those condi- N-292 01-05-81 Depositing Weld Metal Prior tions specified in the Code Case: The Code re-

11-28-83 to Preparing Ends for Weld- quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality 07-30-86 ing,Section III, Division 1, Assurance," and, in addition, Class 3 valve 07-30-89 Class 1, 2, and 3 Construction manufacturers should also meet the provisions of Code Case N-292 is acceptable subject to the fol- NCA 4000. lowing conditions in addition to those conditions

1.84-5

specified in the Code Case: Class 3 piping that is 1477-1 03-09-72 Use of. 1970 Addenda of longitudinally welded and that has a weld effi- 01-01-78 ANSI B31.7,Section III

ciency factor of .1.0 as selected from Table 1494-1 03-03-73 Weld Procedure Qualification ND-3613.4-1 should receive a 100 percent 01-01-78 Test,Section III

volumetric examination (RT or UT) of the de- 1506 12-13-71 Stress Intensification Factors, posited weld metal in accordance with the re- 01-01-78 Section III, Class 2 and 3 quirements of ND-500

0. Piping

1516-2 08-11-75 Welding of Seats or Minor In- N-318-4 12-11-89 Procedure for Evaluation of (N-24) 07-01-78 ternal Permanent Attach- the Design of Rectangular ments in Valves for Section Cross Section Attachments on III Applications Class 2 or 3 Piping, Section 1516-2 11-20-788 Welding of Seats or Minor In- III, Division 1 (N-24) 01-01-80 ternal Permanent Attach- Code Case N-318-4 is acceptable subject to the ments in Valves for Section following conditions in addition to those condi- III Applications tions specified in the Code Case. Applicants 15339 06-14-72 Pressure Temperature Ratings should identify in their Safety Analysis Report: 07-01-75 of SA-351 Grades CF8A,

(1) the method of lug attachment, (2) the piping CF3, and CF3M,Section III

system involved, and (3) the location in the sys- 1535-2 04-30-73 Hydrostatic Testing of Section tem where the Case is to be applied. 03-21-77 III, Class 1 Valves

1536 08-14-72 Closing Seam for Electrical

2. Code Cases that were endorsed by the NRC in

07-01-77 Penetrations for Section III,

a prior version of this guide and were later annulled Class 2, 3, and MC

by action of the ASME should be considered as

1539-1 11-21-77 Metal Bellows and Metal deleted from the list of acceptable Code Cases as of (N-30-1) 01-01-81 Diaphragm Stem Sealed the date of the ASME action that approved the Valves,Section III, Division annulment. Such Code Cases, which were annulled

1, Classes 1, 2, and 3 on or after July 1, 1974, are listed below by number, 1541-3 05-15-78 Hydrostatic Testing of Em-

4 5 effective dates, and title. (N-32-3) 07-01-79 bedded Class 2 and Class 3

1361-2 03-09-72 Socket Welds, Section III Piping for Section III, Divi-

03-01-79 sion 1 Construction N-32-4 03-16-81 Hydrostatic Testing of Em- Code Case 1361-2 was acceptable when used in 03-16-84 bedded Class 2 and 3 Piping connection with Section III, paragraph NB-3356, for Section III, Division 1 Fillet Weld

s. Construction

1461-16 03-09-72 Electron Beam Welding, Sec- Code Case N-32-4 was acceptable subject to the

02-16-77 tion 1, 111, and VIII, Division following conditions in addition to those condi-

1 and 2 tions specified in the Code Case:

1470-27 12-18-72 External Pressure Charts for The acceptance was based on the following clari-

11-04-74 High-Strength Carbon Steels fication and interpretation. Code Case N-32-4 and for Low-Alloy Steels, does not replace paragraph NC/ND 6129, "Pro- Section VIII, Division 1 and visions for Embedded or Inaccessible Welded

2, and Section III

Joints in Piping," of the Cod

e. The intent of the

1471-1 03-09-72 Vacuum Electron Beam Code Case is to (1) provide additional testing

01-01-78 Welding of Tube Sheet Joints, above Code requirement and (2) permit liquid Section III penetrant or magnetic particle testing in place of

4 Earlier date-date Code Case was approved by ASME; radiographic testing for Class 3 piping with 3/8"

later date-date Code Case was annulled. Where more than two dates appear, the last date is the date that the Code Case nominal wall thickness or less.

was annulled, The middle date (or dates) was the date of re- 8 affirmation of the Code Case. This revision of the Code Case was originally approved by

5 Code Cases 1355-3, 1534, and 1554, which were listed in the ASME on 8-11-75 and was annulled on 7-1-78 because of the publication of revisions to Section III in the Winter 1977 the original issue of this guide, were annulled by ASME action Addenda. However, the users did not believe that the Code prior

6 to July 1, 1974. Case was covered in the Code revision; therefore, ASME reaf- Code Case 1461-1 is no longer listed as a Section III Code firmed the Case on 11-20-78. Because of these circumstances Case and is therefore deleted from the acceptable listing. and because there were no changes in the Code Case, the NRC

7 The annulment of Code Case 1470-2 was effective upon considers that this Case was in effect during the period 7-1-78 ASME approval of Code Case 1630. However, because of an through 11-20-78.

9 oversight, the annulment was not noted until publication of Code Case was annulled on date as indicated, but the an- Supplement No. 13 to the 1974 Code Cases. nulment was first indicated in Revision 12 to this guide.

1.84-6

Paragraph (1) contains an additional require- 3 components for fluid systems. These designa- ment to the Code. It was, therefore, acceptable tions should be established and justified in the but unnecessary to include in the Code Case. design specifications.

Paragraph (2) is a variation in the volumetric examination technique and was acceptable as written. Paragraph (3) contains an additional re- 1607-1 11-04-74 Stress Criteria for Section III,

quirement and is not a relaxation of the Code. It 07-01-77 Classes 2 and 3 Vessels was, therefore, acceptable but unnecessary to in- Designed to NC/ND-3300

clude in the Code Case. Excluding the NC-3200

Alternate Code Case 1607-1 was acceptable subject to the

1552-1 08-29-77 Design by Analysis of Section interpretation that the stress limit designations of (N-35-1) 07-01-79 III, Class 1 Valves "Upset," "Emergency," and "Faulted" do not

1553-19 03-03-75 Upset Heading and Roll necessarily imply agreement with specified plant

01-01-76 Threading of SA-453 for Bolt- conditions applicable to ASME Code Class 2 and ing in Section III 3 components for fluid systems. These designa-

1555-1 01-14-77 Certification of Safety Relief tions should be established and justified in the

01-01-78 Valves,Section III, Division 1 design specifications.

1569 03-03-7510 Design of Piping for

07-01-79 Pressure Relief Valve Sta- tion,Section III N-55-1 04-05-84 Inertia and Continuous Drive Code Case 1569 was acceptable subject to com- (1609) 04-05-87 Friction Welding,Section III,

pliance with the recommendations contained in Division 1 Regulatory Guide 1.67, "Installation of Over- 1614 12-17-7310 Hydrostatic Testing of Piping pressure Protection Devices." 01-01-79 Prior To. or Following the In- stallation of Spray Nozzles for Section III, Classes 1, 2, and

1573 04-30-73 Vacuum Relief Valves, Sec- 3 Piping Systems

01-01-78 tion III 1620 03-02-74 Stress Category for Partial

1574 04-30-73 Hydrostatic Test Pressure for (N-6 1) 01-08-79 Penetration Welded Penetra-

12-31-74 Safety Relief Valves, Section 01-08-82 tions,Section III, Class 1 III Construction

1580-1 11-05-73 Buttwelded Alignment Toler- 1623 03-02-74 Design by Analysis for Section

01-01-78 ance and Acceptable Slopes 03-01-79 III, Class I Sleeve-Coupled for Concentric Centerlines for and Other Patented Piping Section III, Class 1, 2, and 3 Joints Construction 1630-1 07-10-78 External Pressure Charts for

1581 06-25-73 Power-Operated Pressure Re- (N-66-1) 07-10-81 High Yield Strength Carbon

03-01-79 lief Valves,Section III Steels and Low Alloy Steels.

1588 08-13-73 Electro-Etching of Section III (Yield Strength above 38 Ksi (N-46) 03-19-79 Code Symbols to 60 Ksi Inclusive.) For Sec-

03-19-82 tion III, Class 1, 2, 3, and MC 1601 11-05-73 Limits of Reinforcement for 1630-1 12-11-8111 External Pressure Charts for

07-01-74 Two-Thirds Area,Section III, (N-66-1) 12-05-84 High Yield Strength Carbon Class 1 12-05-87 Steels and Low Alloy Steels.

1606-1 12-16-74 Stress Criteria Section III, (Yield Strength above 38 Ksi

07-01-77 Classes 2 and 3 Piping Subject to 60 Ksi Inclusive.) Section to Upset, Emergency, and III, Division 1, Class 1, 2, 3, Faulted Operating Conditions and MC 1633 04-29-74 Brazing of Seats to Class 1, 2, Code Case 1606-1 was acceptable subject to the 01-01-78 and 3 Valve Body or Bonnets, interpretation that the stress limit designations of Section III

"Upset," "Emergency," and "Faulted" do not "1The Code Case was annulled on July 10, 1981 (ASME

necessarily imply agreement with specified plant mandatory annulment date). It was reinstated on Decem- ber 11, 1981. Because of the circumstances and because there conditions applicable to ASME Code Class 2 and were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 7-10-81 through

10 Corrected date. 12-11-81.

1.84-7

1635-112 08-12-74 Stress Criteria for Section III, 1672 11-04-74 Nuclear Valves for Section

07-01-77 Class 2 and 3 Valves Sub- 03-21-77 1II, Division 1, Class 1, 2, 3 jected to Upset, Emergency, Construction and Faulted Operating 1675 12-16-74 Tubesheet to Shell or Formed Conditions 07-01-76 Head Weld Joints, Section Code Case 1635-1 was acceptable subject to the III, Class 1 Vessels interpretation that the stress limit designations of 16769 12-16-74 Clarification of Stress Intensi-

"Upset," "Emergency," and "Faulted" do not 07-01-76 ties in Curved Pipe or Welded necessarily imply agreement with specified plant Elbows,'Section III

conditions applicable to ASME Code Class 2 and 1677 12-16-74 Clarification of Flange Design

3 components for fluid systems. These designa- (N-82) 03-01-79 Loads,Section III, Class 1, 2, tions should be established and justified in the and 3 design specifications. 1678 12-16-74 Butterfly Valves of Circular

01-08-79 Cross Section Larger than 24

1636-112 08-12-74 Stress Criteria for Section III, 01-01-80 in. NPS for Section III, Class

07-01-77 Class 2 and 3 Pumps Sub- 2 and 3 Construction jected to Upset, Emergency, 1681-113 03-03-75 Organizations Accepting and Faulted Operating (N-84) 03-01-79 Overall Responsibility for Sec- Conditions tion III Construction

1683-1 03-01-76 Bolt Holes for Section III,

Code Case 1636-1 was acceptable subject to the

07-01-76 Class 1, 2, 3 and MC Compo- interpretation that the stress limit designations of

"Upset," "Emergency," and "Faulted" do not nent Supports

1685 04-28-75 Furnace Brazing Section III,

necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 01-01-78 Class 1, 2, 3 and MC Con- struction

3 components for fluid systems. These designa-

1686. 03-03-75 Furnace Brazing,Section III,

tions should be established and justified in the

01-01-78 Subsection NF, Component design specifications.

Supports

1651 0.8-12-74 Interim Requirements for Cer- 1689-1 09-10-76 Alternate PWHT Time and

03-01-79 tification of Component Sup- 01-01-78 Temperature for SA-182 ports,Section III,. Subsection' Grade F-22, SA-387 Grade NF 22, Class 2, and SA-335

1657 11-04-74 Stress Criteria for Class 2 Grade P-22 Section III, Class

07-01-77 and 3 Atmospheric and Low 1, 2, 3 and CS

Pressure (0-15 psig) Steel Code Case 1689-1 was acceptable subject to the Storage Tanks

1659 11-04-74 Interconnection of Two Piping following condition in addition to that specified

07-01-77 Systems for Section III, Class in the Code Case: The alternate postweld heat

1, 2, and 3 Construction treatment should be prequalified along with the

1660 11-04-74 Overpressure Protection Un- applicable welding procedure in accordance with ASME Section IX.

(N-77) 03-01-79 der Emergency Operating Conditions for Section III, 1692 04-28-75 Rules for Design of Welded Class 1 (N-90) 07-01-78 Class 1 Pumps

1661 11-04-74 Postweld Heat Treatment 1695-1 11-03-75 Brazing, Section 11, Division

01-01-78 P-No. 1 Materials for Section 01-01-78 1, Class 3 III, Class 1 Vessels 1700 11-03-75 Determination of Capacities

1662 11-04-74 Shop Assembly of Compo- (N-94) 03-19-79 of Liquid Relief Valves, Sec-

01-01-78 nents, Appurtenances and 03-19-82 tion Il, Division 1, Class 1, 2, Piping Subassemblies for Sec- and 3 tion III, Class 1, 2, 3 and MC 1701-2 07-09-79 Determination of Capacities Construction (N-95-2) 07-09-82 of Vacuum Relief Valves,

1665 11-04-74 Pressure-Temperature Ratings Section III, Division 1, (N-81) 07-01-78 for Class 1 Valves Made from Classes 2, 3, and MC and

5 Cr-1/2 Mo,Section III Division 2 Concrete Contain- ments

' 2 Code Cases 1635 and 1636 were approved by ASME on ' 3 Code Case 1681 was approved by ASME on 12-16-74 July 1, 1974, and revised on August 12, 1974. Because Code and revised on 3-3-75. Because Code Case 1681 was not in Cases 1635 and 1636 were not in effect on September 1, 1974, effect on March 31, 1975, the Code Case was not included in they are not included in this guide. this guide.

1.84-8

1702-1 07-11-77 Flanged Valves Larger than should provide justification in the referencing (N-96-1) 01-01-80 24 inches for Section III, Safety Analysis Report for the fluid selected for Division 1, Class 1, 2 and 3 use in the pressure test. The information pro- Construction vided should demonstrate that the fluid selected

1703 06-30-75 Brazing of Copper Alloys Sec- will not have deleterious effects on the material

01-01-78 tion III, Class' 2 of the pressure boundary and that the fluid may

1706 06-30-75 Data Report Forms for Com- be safely used at the specified temperature and

12-31-75 ponent Supports, Section 11, pressure of the test. When the fluid selected for Class 1, 2 and 3 1, use is the operating fluid, additional information

1711 11-03-75 Pressure Relief Valve Design is not required.

(N-100) 01-08-79 Rules,Section III, Division 1,

01-21-82 Class 1, 2 and 3 1729 11-03-75 Minimum Edge Distance-

01-01-83 (N-111) 03-01-79 Bolting for Section III, Divi- sion 1, Class 1, 2, and 3 and Code Case 1711 was acceptable subject to the MC Construction of Compo- following conditions in addition to those condi- nent Supports tions specified in the Code Case. The following 1732 11-03-75 Hardsurfaced Valves with In- information should be provided in the Safety (N-114) 01-01-79 let Connections less than 2-in.

Analysis Report: Nominal Pipe Size for Section III, Division 1 Class 1 and 2

(1) If stress limits are used in excess of those Construction specified for the upset operating condition,

1733 11-03-75 Evaluation of Safe Shut Down it should be demonstrated how the pressure (N-115) 01-01-78 Earthquake Loadings for Sec- relief function is ensured. Refer to para- tion III, Division 1, Class MC

graph 3.1, Section 1, of the Case for Class 1 Containment Vessels and paragraph 3.2,Section II, of the Case

1734 11-03-75 Weld Design for Use for Sec- for Class 2 and 3 pressure relief valves.

(N-116) 01-01-78 tion III, Division 1, Class 1, 2,

(2) If Case 1660 is to be used in conjunction 3 and MC Construction of with this Case, it should be stated that the Component Supports stress limits of Case 1660 supersede those Code Case 1734 was acceptable subject to the of paragraph 3.2(b),Section I, of Case following conditions in addition to those condi-

1711. Functional assurance of (1) above is tions specified in the Code Case: If the configu- required in all situations. ration of Figure 1 of the Code Case is used for Class 1 and MC component supports, full pene-

1712 08-11-75 Nameplates and Stamping for tration welds should be used. The application of (N-101) 03-01-79 Section III, Division 1, Class the configuration shown in Figures 2 and 3

1, 2, 3 and MC Construction should be restricted to the welding of cans for as Referenced in NA-8300 spring encapsulation in spring hanger

s. In Figure

17189 08-11-75 Design of Structural Connec- 3, the length of the leg of the fillet weld adjacent

07-01-76 to the plate should be equal to the thickness of tions for Linear Type Compo- nent Supports,Section III, the exposed end of the plate; also, the leg of the Division 1, Class 1, 2 and 3 fillet weld adjacent to the shell should be equal to and MC the thickness of the exposed end of the shell.

17199 08-11-75 Single-Welded, Full-Penetra-

1739-4 11-17-80 Pump Internal Items, Section

07-01-76 tion Sidewall Butt Joints in Atmospheric Storage Tanks, (N-119-4) 12-01-83 III, Division 1, Class 1, 2,Section III, Division 1, Class 2 and 3

1726 11-03-75 Refinement of Low Alloy 1744 03-01-76 Carbon Steel Pipe Flanges (N-109) 03-01-79 Steel Heat Affected Zone Un- (N-121) 03-01-79 Larger than 24 in., Section der Overlay Cladding, Section 111, Division 1, Class 2 and 3 III, Division 1, Class 1 Com- Construction ponents 1765 04-26-76 Machining After Hydrostatic

1727 12-22-75 Alternate Test Fluids, Section 07-01-77 Testing Class 2 and 3 (N-110) 01-01-79 III, Division 1 Construction,Section III, Di- vision 1 Code Case 1727 was acceptable subject to the 1768 06-29-76 Permanent Attachments to following condition in addition to those condi- 01-01-78 Containment Vessels-Class MC, Section 1I1, Division tions specified in the Code Case: The applicant I

1.84-9

1769-1 02-16-77 Qualification of NDE Level 1808 02-16-77 F-Number Classification of

10-01-77 I1l Personnel,Section III, Di- 01-01-78 Low Alloy and Carbon Steel vision 1 Bare Rod Electrodes Sec-

1774-1 07-11-77 Minimum Wall Thickness for tions I, II, Il1, IV, V, VIII,

(N-142-1) 01-01-80 Class 2 and 3 Valves, Section and IX

Ill, Division 1 1812 03-23-77 Size of Fillet Welds for Socket

1775 08-13-76 Data Report Forms for Core (N-174) 01-07-80 Welding of Piping, Section

08-13-79 Support Structures, Class CS,

01-01-81 III, Division 1 Section III, Division 1

1818 03-23-77 Welded Joints in Component

1780-1 07-10-78 10 Hydrostatic Testing and (N-146-1) (N-175) 07-01-79 Standard Supports, Section

12-11-81 Stamping of Components,

01-01-82 Section 1II, Division 1 111, Division 1 Construction Code Case 1818 was acceptable subject to the Code Case 1780-1 was acceptable subject to the following condition in addition to those condi- following conditions in addition to those condi- tions specified in the Code Case: That portion of tions specified in the Code Case: On a generic the unwelded housing that is limited to 900 maxi- basis, the application of the Code Case is limited mum should include a minimum of two sectors to pumps and valves. Application to other com- that are uniform in length.

ponents should be treated on a case-by-case ba- sis. Each licensing application in which the Code Case is to be used should contain information showing that, as a minimum, the closure fixture N-179 07-11-77 Openings in Valves for Sec- will impose loads that result in stresses equal to 07-11-80 tion III, Division 1, Class 1, 2 or greater than those. induced during the hydro- and 3 Construction static test of a complete pump assembly. A clo- N-182 07-11-77 Alternate Rules for Procedure sure fixture for the part being tested that is simi- 07-01-81 Qualification Base Material lar in size and shape to the actual mating part is Orientation,Section III, Divi- considered adequate to impose these loads. It is sion 1, Class 2 and 3 Con- not intended that piping reaction loadings be struction simulated in the hydrostatic testing. N-184 07-11-77 Roll Threading of SA-453

07-01-79 Bolting for Section III, Divi-

1783-1 01-14-77 Qualification of Nondestruc- sion 1, Class 1, 2, 3 or CS

01-01-79 tive Examination Personnel, Construction Section III, Division 1 N-189 08-29-77 Primary Membrane Plus Pri-

07-01-79 mary Bending Stress Intensity Code Case 1783-1 was acceptable subject to the Limits for Other Than Solid following condition in addition to those condi- Rectangular Sections for Sec- tions specified in the Code Case: The first sen- tion III, Division 1, Class MC

tence of paragraph (1) should be replaced with Construction the following: "The certification of the Level III

nondestructive examination personnel for the N-193 11-21-77 Use of SB-61 and SB-62 purpose of this Section of the Code shall be the 11-21-80 Bronze for Section III, Di- responsibility of the employer of the Level III in- vision 1, Class 3 Flange and dividual. If the employer is not a Certificate Socket Weld End Valves Holder, then the verification of such certificate is N-199 03-20-78 Intervening Elements, Section the responsibility of the Certificate Holder." 01-01-81 1II, Division 1, Classes 1, 2, 3 and MC Component Con- struction

1791 01-14-77 Projection Resistance Welding (N-154) 01-14-80 of Valve Seats,Section III,

Division 1, Class 1, 2 and 3 Code Case N-199 was acceptable subject to the Valves following condition in addition to those condi-

1796 01-14-77 Body Neck Thickness Deter- tions specified in the Code Case: The applicant (N-159) 07-01-78 mination for Valves with Inlet should provide information in the referencing Connections 4-Inch Nominal Safety Analysis Report that demonstrates that all Pipe Size and Smaller, Sec- intervening elements have been designed in com- tion III, Division 1, Class 1, 2, pliance with the requirements of the respective and 3 design specification.

1.84-10

1693 03-20-78 Welding Procedure Qualifica- N-252 11-19-79 Low Energy Capacitive Dis- (N-212) 01-01-81 tion of Dissimilar Metal Welds 07-01-82 charge Welding Method for When "Buttering" with Alloy Temporary or Permanent At- Weld Metal and Heat Treat- tachments to Components and ment May Be Involved, Sec- Supports,Section III, Division tion III, Division 1, and Sec- 1, and XI

tion IX Code Case N-252 was acceptable subject to the N-214-2 05-25-83 Use of SA-351 Grade CN7M, following conditions in addition to those condi-

12-31-83 for Valves,Section III, Divi- tions specified in the Code Case: The applicant sion 1 should indicate in the Safety Analysis Report the N-217-1 01-07-80 Postweld Heat Treatment of application, the material, and the material thick-

09-07-82 Weld Deposit Cladding on ness to which the strain gage or thermocouple

12-05-84 Classes 1, 2, 3, MC, and CS will be attached by CD welding.

09-05-85 Items,Section III, Division 1

02-23-87 N-260-2 12-05-85 Weld Repair of SA-182 Type N-220 08-28-78 Code Effective Date for Com- 12-05-88 316 Forgings, Section Il1, Di-

07-13-81 ponent Supports,Section III, vision 1, Classes 1, 2, 3, and

07-13-84 Division 1 MC

N-226 11-20-78 Temporary Attachment of

01-01-80 Thermocouples,Section III, Code Case N-260-2 was acceptable subject to the Division 1, Class 1, 2 and 3 following condition in addition to those condi- tions specified in the Code Case: Type 308 L

Component Construction welding materials should not be used to repair N-228 03-19-79 Alternate Rules for Sequence grade F 316 N forgings because of the difference

03-19-82 of Completion of Code Data in strength levels.

Report Forms and Stamping for Section III, Class 1, 2, 3 N-261 05-15-80 Weld Procedure Qualification and MC Construction

12-13-82 for Materials with Impact Re- N-229 01-08-79 Alternate Rules for Fabrica- quirements for Section II,

01-21-82 tion Welding SB-148 Alloy Division 1, Class 3 Construc-

01-21-85 CDA 954 for Section III, Di- tion

01-21-88 vision 1, Class 3 Construction N-263 03-17-80 Alternate Thread Forms, Se- N-233 01-08-79 Alternate Rules for PWHT of 03-17-83 ries and Fits for Component

01-21-82 P-No. 6, Group 4 Material for Supports,Section III, Divi-

09-17-84 Section III, Division 1, Class sion 1

09-17-87 1, 2, or 3 Construction N-237-2 05-25-83 Hydrostatic Testing of Inter- Code Case N-263 was acceptable subject to the

07-30-86 nal Piping,Section III, Di- following conditions in addition to those condi-

12-07-87 vision 1, Classes 2 and 3 tions specified in the Code Case. The following information should be provided in the Safety

07-01-88 Analysis Report: (1) a description of the appli- N-238 05-14-79 High Temperature Furnace cation, (2) a need for the use of the Code Case,

01-01-82 Brazing of Seat Rings in Valve and (3) a demonstration that support design will Bodies or Bonnets for Section withstand maximum conditions of loading with III, Division 1, Class 1, 2, and the worst combination of thread tolerance.

3 Valves N-271 03-17-80 Simplified Method for Ana- Code Case N-238 was acceptable subject to the

02-14-86 lyzing Flat Face Flanges with following conditions in addition to those condi- Metal to Metal Contact Out- tions specified in the Code Case: The furnace side the Bolt Circle for Sec- brazing process procedure qualification should tion III, Class 2, 3, and MC

include a verification for nonsensitization as Construction given in ASTM A 262-70, Practices A or E, or N-272 05-15-80 Compiling Data Report ASTM A 708-74 whenever materials subject to 01-01-82 Forms,Section III, Division 1 sensitization are to be brazed. Documentation is N-275 05-15-80 Repair of Welds, Section Il1, required that a nonsensitizing brazing procedure 12-07-82 Division 1 was employed for valves produced to this Case. 12-31-83

1.84-11

Code Case N-275 was acceptable subject to the tions specified in the Code Case: Applicants following condition in addition to those condi- should identify in their Safety Analysis Report tions specified in the Code Case: Use of the (1) the minimum length of thread engagement Code Case is applicable only when the removal and (2) the procedure used to establish thread of an indication requires that the full weld thick- engagement.

ness be removed and, in addition, the backside of the weld assembly joint is not accessible for N-320 07-13-81 Alternate PWHT for SA-487, the removal of examination material. If an indi- 12-31-83 Grade CA6NM,Section III,

cation is removed and weld-metal layers still re- Division 1 main; it is not acceptable to gouge through the N-328 12-11-81 Thermit Brazing or Welding wall in order to qualify for use of the Code Case. 09-17-84 of Nonstructural Attachments, Instead, examination of the cavity is required 09-17-87 Section III, Division 1 when such an indication has been removed. N-336 06-17-82 Examination of Welds Inac-

06-30-83 cessible During Pressure Test,Section III, Division 1, Class N-276 03-17-80 Welding of SA-358 Pipe, Sec-

- . MC

02-14-83 ti6n III,, Division 1 N-339 06-17-82 Examination of Ends of Fillet

02-14-86

09-17-84 Welds,Section III, Division 1, N-279 05-15-80 Use of Torquing as a Locking Classes 1, 2, and MC

07-13-81 Device for Section III, Divi- N-341 06-17-82 Certification of Level III NDE

sion 1, Class 1, 2, 3, and MC

05-19-85 Examiner,Section III, Divi- Component Supports

02-23-87 sion 1 and 2 Code Case N-279 was acceptable subject to the 07-01-88 following condition in addition to those condi- N-346 06-17-82 Explosive Welding, Section tions specified in the Code Case: When torquing 05-19-85 III, Division 1 or other preloading is used as a locking device 06-30-86 and the joint is later unloaded or disassembled, N-347 12-07-82 Continuous Electric Resis- the bolting should be replaced unless it can be 12-13-85 tance Seam Welding' of demonstrated or proved to the authorized nu- P-No. 8 Materials for Compo- clear inspector that the original bolting has not nent Supports,Section III,

been permanently strained. Division 1 N-349 07-16-82 Pressure Testing Piping Sys-

12-31-85 tems,Section III, Division 1, N-280 05-15-80 Alternate Rules for Examina- Classes 2 and 3

07-01-81 tion of Welds in Section III, N-350 12-07-82 Postweld Heat Treatment- Class 3 Storage Tanks 09-05-85 Thickness of Material, Sec- N-281 05-15-80 Welding Operator Perform- tion III, Division 1

07-01-81 ance Qualification,Section III, Division 1 Code Case N-350 was acceptable subject to the N-282 05-15-80 Nameplates for Valves, Sec- following condition in addition to those condi-

05-25-83 tion III, Division 1, Class 1, 2, tions specified in the Code Case: Applicants

07-30-86 and 3 Construction wishing to use this Case for other than P-1 mate- rials should demonstrate that the use of this Case

07-30-89 N-300 11-17-80 Pressure-Temperature Rat- will not adversely affect the required material

12-01-83 ings, Hydrostatic Tests, and properties.

Minimum Wall Thickness of Valves,Section III, Division N-357 12-13-82 Certification of Material for

1, Class 1 05-19-85 Component Supports, Section N-302 03-16-81 Tack Welding, Section IIi, 07,-01-88 III, Division 1, Subsection NF

11-28-83 Division 1, Construction N-359 12-13-82 Weld Connection for Coaxial N-309 05-11-81 Identification of Materials for 12-31-84 Cylinders,Section III, Divi-

05-11-84 Component Supports, Section sion 1, Class 1 III, Division 1 N-362-2 07-12-84 Pressure Testing of Contain- N-314 05-11-81 Alternate Rules for Thread 04-05-87 ment Items,Section III, Divi-

05-11-84 Engagement,Section III, Di- 07-27-87 sion 1, Classes 1, 2, and MC

vision 1 07-01-88 N-376 05-25-83 Pressure Testing of Embedded Code Case N-314 was acceptable subject to the 07-30-8*6 Class 2 and 3 Piping, Section following conditions in addition to those condi- III, Division 1

1.84-12

N-377 04-04-83 Effective Throat Thickness of 1516-1 06-25-73 Welding of Seats in Valves for

12-31-83 Partial Penetration Groove 08-11-75 Section III Applications Welds,Section III, Division 1, 1539 11-06-72 Metal Bellows and Metal Dia- Classes 1, 2, and 3 (N-30-1) 11-21-77 phragm Stem Sealed Valves, N-383-1 07-18-85 Weld Repair of SA-182 Aus- Section III, Classes 1, 2,

09-05-85 tenitic Forgings,Section III, and 3 Division 1, Classes 1, 2, and 3 1540-1 03-03-73 Elastomer Diaphragm Valves,

01-14-77 Section III, Classes 2 and 3 Code Case N-383 was acceptable subject to the 1540-2 01-14-77 Elastomer Diaphragm Valves, following condition in addition to those condi- (N-31) 01-07-80 Section III, Class 2 and 3 tions specified in the Code Case: Applicants who

02-14-83 apply the provisions of this Case to permit mate-

07-18-85 rial manufacturers to weld repair austenitic forg- ings without re-solution heat treatment should provide justification to the NRC staff (via the Code Case 1540-2 (N-31) was acceptable subject Safety Analysis Report) why this is acceptable for to the following conditions in addition to those their applications, including their evaluation of conditions specified in the Code Case: Each ap- the susceptibility for stress corrosion cracking. plicant who applies the Code Case should indi- cate in the referencing Safety Analysis Report N-397 02-20-84 Alternative Rules to the Spec- that the service life of the elastomer diaphragm

02-20-87 tral Broadening Procedures of should not exceed the manufacturer's recom- N-1226.3 for Classes 1, 2, mended service life. This recommended service and 3 Piping,Section III, Di- life should not exceed 1/3 of the minimum cycle vision 1 life as established by the requirements of para- Code Case N-397 was acceptable subject to the graph 3 of the Code Case. In addition, the serv- following condition in addition to those condi- ice life of the elastomer diaphragm should not tions specified in the Code Case. The Code Case exceed 5 years, and the combined service and is acceptable for specific plant applications on a storage life of the elastomer diaphragm should case-by-case basis pending revision of Regulatory not exceed 10 years.

Guide 1.122, "Development of Floor Design Re- sponse Spectra for Seismic Design of Floor- 1541-1 08-13-73 Hydrostatic Testing of Em- Supported Equipment or Components. 09-30-76 bedded Class 2 and Class 3 Piping for Section III Con- N-413 02-14-85 Minimum Size of Fillet Welds struction

02-14-88 for Subsection NF Linear

1541-2 09-30-76 Hydrostatic Testing of Em- Type Supports,Section III,

05-15-78 bedded Class 2 and Class 3 Division I

Piping for Section III, Divi- N-421 02-14-85 Brazing Using a Radiant En- sion 1 Construction

05-19-85 ergy Source,Section III, Divi-

1552 12-18-72 Design by Analysis of Section

06-30-86 sion 1

08-29-77 III, Class 1 Valves

3. Code Cases that were endorsed by the NRC in 1553 12-18-72 Upset Heading and Roll a prior version of this guide and were superseded by 03-03-75 Threading of SA-453 for Bolt- revised Code Cases on or after July 1, 1974, should ing,Section III

be considered as not endorsed as of the date of the 1555 12-18-72 Certification of Safety Relief ASME action that approved the revised version of 01-14-77 Valves on Liquids the Code Cases. These Code Cases that are no longer 1606 11-05-73 Stress Criteria for Section III,

endorsed are listed in the following by number, 12-16-74 Class 2 and 3 Piping Sub- effective dates, 14 and title. jected to Upset, Emergency, and Faulted Operating

15081s 12-13-71 Allowable Stresses, Design In- Conditions

06-30-75 tensity and/or Yield Strength Code Case 1606 was acceptable subject to the Values,Section I, 11, and interpretation that the stress limit designations of VIII, Divisions 1 and 2

"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant

'"Earlier date-date Code Case was approved by ASME;

later date-dale revision of Code Case was approved by conditions applicable to ASME Code Class 2 and ASME. 3 components for fluid systems. These designa-

15Code Case 1508 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceptable tions should be established and justified in the listing. design specifications.

1.84-13

1607 11-05-73 Stress Criteria for Section Ill, N-62-5 07-24-89 Internal and External Valve

11-04-74 Classes 2 and 3 Vessels Sub- 12-11-89 Items,Section III, Division 1, jected to Upset, Emergency, Class 1, 2 and 3 and Faulted Operating Condi- It Code Case N-62-5 was acceptable subject to the tions following condition in addition to those condi- Code Case 1607 was acceptable subject to the tions specified in the Code Case: The Code re- interpretation that the stress limit designations of quires that Class 1 and Class 2 valve manufactur-

"Upset," "Emergency," and "Faulted" do not ers meet the provisions of NCA 4000, "Quality necessarily imply agreement with specified plant Assurance," and, in addition, Class 3 valve conditions applicable to ASME Code Class 2 and manufacturers should also meet the provisions of

3 components for fluid systems. These designa- NCA 4000.

tions should be established and justified in the design specifications. 1630 11-04-74 External Pressure Charts for (N-77) 07-10-78 High Yield Strength Carbon Steels and Low Alloy Steels.

1609-1 03-01-76 Inertia and Continuous Drive (Yield strength above 38 Ksi (N-55) 08-28-78 Friction Welding,Section I; to 60 Ksi Inclusive.) For Sec-

07-13-81 III, IV, VIII, Division 1 and tion III, Class 1, 2, 3, and

04-05-84 2, and IX MC; and Section VIII, Divi-

1621-2 05-25-77 Internal and External Valve sion 1 and 2 (N-62-2) 05-15-80 Items,Section III, Division 1, 1683 03-03-75 Bolt Holes for Section III, Di-

05-25-83 Class 1, 2 and 3 Line Valves 03-01-76 vision 1, Class 1, 2, 3 and MC

07-18-85 Component Supports

1689 06-30-75 Alternate PWHT Time and Code Case 1621-2 (N-62-2) was acceptable sub-

09-10-76 Temperature for SA-182 ject to the following condition in addition to Grade F22 Section III, Class those conditions specified in the Code Case: The

1, 2, 3 and CS

Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of NCA 4000, Code Case 1689 was acceptable subject to the

"Quality Assurance," and, in addition, Class 3 following condition in addition to that specified valve manufacturers should also meet the provi- in the Code Case: The alternate postweld heat sions of NCA 4000. treatment should be prequalified along with the applicable welding procedure in accordance with ASME Section IX.

N-62-3 07-18-85 Internal and External Valve

.09-05-85 Items, Section Il, Division 1,

1695 04-28-75 Brazing,Section III, Class 3 Class 1, 2 and 3 Line Valves

11-03-75 Code Case N-62-3 was acceptable subject to the 1701 06-30-75 Determination of Capacities following condition in addition to those condi- 03-20-78 of Vacuum Relief Valves Sec- tions specified in the Code Case: The Code re- tion III, Class MC

quires that Class 1 and Class 2 valve manufactur- 1701-1 03-20-78 Determination of Capacities ers meet the provisions of NCA 4000, "Quality (N-95-1) 03-19-79 of Vacuum Relief Valves, Assurance," and, in addition, Class 3 valve 07-09-79 Section III, Division 1 and manufacturers should also meet the provisions of 2, Class MC

NCA 4000. 1702 06-30-75 Flanged Valves Larger than

07-11-77 24 inches for Section III,

Class 1, 2 and 3 Construc- N-62-4 09-05-85 Internal and External Valve tion

07-27-88 Items,Section III, Division 1, 1720 08-11-75 Weld End Preparation for

07-24-89 Class 1, 2 and 3 03-01-76 Section III, Division 1 Con- struction Code Case N-62-4 was acceptable subject to the following condition in addition to those condi- Code Case 1720 was acceptable subject to the tions specified in the Code Case: The Code re- following condition in addition to those condi- quires that Class 1 and Class 2 valve manufactur- tions specified in the Code Case: Weld end ers meet the provisions of NCA 4000, "Quality preparations other than those shown in Figures Assurance," and, in addition, Class 3 valve 1, 2, and 3 of the Code Case are not acceptable manufacturers should also meet the provisions of on a generic basis. Such alternative end prepara- NCA 4000. tions should be treated on a case-by-case basis.

1.84-14

1720-1 03-01-76 Weld End Preparation for Code Case 1780 was acceptable subject to the

11-20-78 Section III, Division 1 Con- following conditions in addition to those condi- struction tions specified in the Code Case: Each licensing Code Case 1720-1 was acceptable subject to the application in which the Code Case is to be used following condition in addition to those condi- should present information that satisfactorily tions specified in the Code Case: The acceptance demonstrates that the subassembly tests ade- of weld end preparations other than those shown quately simulate the pressure loadings. Also, the in Figures 1, 2, and 3 of the Code Case should closure fixture for the test subassembly should be evaluated on a case-by-case basis. adequately simulate the rigidity of adjacent sub- assemblies and also simulate the interface load-

1739-2 08-28-78 Pump Internal Items, Section ings from adjacent subassemblies that would re- (N-119-2) 08-25-80 III, Division 1, Class 1, 2, sult from a hydrostatic pressure test of a and 3 complete pump assembly. As a minimum, the

1739-3 08-25-80 Pump Internal Items, Section closure fixture should impose loads that result in (N-119-3) 11-17-80 III,Division 1, Class 1, 2, stresses equal to or greater than those induced and 3 during the hydrostatic test of a complete pump

1739-4 02-20-8416 Pump Internal Items, Section assembly. It is not intended that piping reaction (N- 119-4) 07-18-85 III, Division 1, Class 1, 2, loadings be simulated in the hydrostatic testing.

and 3 N-119-5 07-18-85 Pump Internal Items, Section 1783 09-10-76 Qualification of Nondestruc-

09-05-85 III, Division 1, Class 1, 2, 01-14-77 tive Personnel,Section III,

and 3 Division 1

1745 03-01-76 Stress Indices for Structural Code Case 1783 was acceptable subject to the (N-122) 01-08-79 Attachments, Class 1, Sec- following condition in addition to those condi-

01-21-82 tion III, Division 1 tions specified in the Code Case: The first sen-

01-21-85 tence of paragraph (1) should be replaced with

01-21-88 the following: "The certification of the Level III

07-24-89 nondestructive examination personnel for the

1761 04-26-76 Use of SB-148 Alloy CA954 purposes of this Section of the Code shall be the

01-14-77 for Section III, Division 1, responsibility of the employer of the Level III in- Class 2 or 3 Flanged End dividual. If the employer is not a Certificate Valves Holder, then the verification of such certificate is

1761-1 01-14-77 Use of SB-148 Alloy CA954, the responsibility of the Certificate Holder."

(N-133) 01-07-80 Section III, Division 1, Class 3

04-02-82 1791 03-17-8017 Projection Resistance Welding N-133-1 04-02-82 Use of SB-148 Alloys 952 and (N-154) 09-09-82 of Valve Seats,Section III,

05-19-85 954,Section III, Division 1, 09-05-85 Division 1, Class 1, 2 and 3 Class 3 12-05-85 Valves N-133-2 05-19-85. Use of SB-148 Alloys 952 and 1797 03-23-77 Finned Tubing for Construc-

07-18-85 954 Section III, Division 1, (N-160) 03-17-80 tion,Section III, Division 1 Class 3 09-07-82

1769 08-13-76 Qualification of NDE Level 07-18-85

02-16-77 III Personnel,Section III, Di- N-192 01-09-78 Use of Flexible Hose for Sec- vision 1 08-30-79 tion III, Division 1, Class 1, 2,

1774 08-13-76 Minimum Wall Thickness for and 3 Construction

07-11-77 Class 2 and 3 Valves, Section Code Case N-192 was acceptable subject to the III, Division 1 following conditions in addition to those condi-

1780 09-10-76 Hydrostatic Testing and tions specified in the Code Cas

e. The applicant

03-10-78 Stamping of Pumps for Class 1 should indicate system application, design and Construction,Section III, Di- operating pressure, and pressure-temperature vision 1 rating of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/

'6 The Code Case was annulled on December 1, 1983 7

' The Code Case was annulled on January 14, 1980

(ASME mandatory annulment date). It was reinstated on Feb- (ASME mandatory annulment date). It was reinstated on ruary 20, 1984. Because of the circumstances and because March 17, 1980. Because of the circumstances and because there were no changes in the Code Case, the NRC considers there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 12-1-83 that this Case was in effect during the period of 1-14-80

through 2-20-84. through 3-17-80.

1.84-15

under regulatory position C.1 acceptable for 3. Components ordered to a Code Case that was appropriate use. Other Code Cases may be previously approved for use need not be changed considered for use in accordance with footnote 6 of because the Code Case has been subsequently the Codes and Standards rule, §50.55a of 10 CFR annulled.

Part 50. 4. Code Cases on the approved list may be applied to components that were in process of

2. Components ordered to a specific version of a construction prior to the effective date of the Code Code Case need not be changed because a Case within the limits specified in the Code Case and subsequent revision to the Code Case is listed as the applicable regulations or recommended in other approved version in this guide. regulatory guides.

1.84-18

APPENDIX

NUMERICAL LISTING OF CODE CASES

N-31-1 N-284 N-395 N-62-6 N-292 N-410

N-106-2 (1720-2) N-304-4 N-411-1 N-119-6 N-309-1 N-412 N-133-3 N-313 N-414 N-154-1 N-315 N-420

N-155-2 (1792-2) N-316 N-430

N-160-1 N-318-4 N-433 N-192-2 N-319-1 N-442 N-196-1 N-345-1 N-215 N-452 N-368 N-240 N-369 N-453-1 N-241 N-391-1 N-454 N-243 N-392-1 N-455 N-247 N-393 N-464 N-262 N-394 N-476 THIS DOCUMENT WAS PRINTED USING RECYCLED PAPER

1-84-19

UNITED STATES FIRST CLASS MAIL

NUCLEAR REGULATORY COMMISSION POSTAGE AND FEES PAID

WASHINGTON, D.C. 20555 USNRC

PERMIT NO. G-67 OFFICIAL BUSINESS

PENALTY FOR PRIVATE USE, $300

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