Regulatory Guide 1.84

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9, Design and Fabrication Code Case Acceptability ASME Section Iii Division 1
ML13064A111
Person / Time
Issue date: 07/31/1993
From:
Office of Nuclear Regulatory Research
To:
References
RG-1.084, Rev 29
Download: ML13064A111 (20)
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U.S. NUCLEAR REGULATORY

COMMISSION

REGO. 1 TORY Revision 29 July 1993 GUIDE OFFICE OF NUCLEAR REGULATORY

RESEARCH REGULATORY

GUIDE 1.84 DESIGN AND FABRICATION

CODE CASE ACCEPTABILITY

ASME SECTION III DIVISION 1

A. INTRODUCTION

Section 50.55a, "Codes and Standards," of 10 CFR Part 50, "Domestic Licensing of Production and Utilization Facilities," requires, in part, that com-ponents of the reactor coolant pressure boundary be designed, fabricated, erected, and tested in accor-dance with the requirements for Class 1 components of S~ection III, "Nuclear Power Plant Components," 1 of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code or equiva-lerit quality standards.

Footnote 6 to §50.55a states that the use of specific Code Cases may be authorized by the Commission upon request pursuant to§ 50.55a (a) (3), which requires that proposed alterna-tives to the described requirements or portions thereof provide an acceptable level of quality and safety.General Design Criterion 1, "Quality Standards and Records," of Appendix A, "General Design Cri-teria for Nuclear Power Plants," to 10 CFR Part 50 requires, in part, that structures, systems, and compo-nents important to safety be designed, fabricated, erected, and tested to quality standards commensu-rate with the importance of the safety function to be performed.

Where generally recognized codes and'Copies may be obtained from the American Society of Me-chanical Engineers, United Engineering Center, 345 East 47th Street, New York, New York 10017.standards are used, Criterion

1 requires that they be identified and evaluated to determine their applicabil- ity, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keeping with the required safety functio

n. Criterion

30, "Quality of Reactor Coolant Pres-sure Boundary," of the same appendix requires, in'part, that components that are part of the reactor coolant pressure boundary be designed, fabricated, erected, and tested to the highest quality standards practical.

Appendix B, "Quality Assurance Criteria for Nu-clear Power Plants and Fuel Reprocessing Plants," to 10 CFR Part 50 requires, in part, that measures be established for the control of special processing of materials and that proper testing be performed.

This regulatory guide lists those Section III ASME Code Cases oriented to design and fabrication that are generally acceptable to the NRC staff for im-plementation in the licensing of light-water-cooled niu-clear power plants.-Any information collection activities mentioned in this regulatory guide are contained as requirements in 10 CFR Part 50, which provides the regulatory ba-sis for this guide. The information collection require-ments in 10 CFR Part 50 have been approved by the USNlRC REGULATORY

GUIDES Regulatory Guides are issued to describe and make available to the pub-lic such information as methods acceptable to the NRC staff for imple-menting specific parts of the Commission's regulations, techniques used by the staff in evaluating specific problems or postulated acci-dents, and data needed by the NRC staff in Its review of applications for permits and licenses.

Regulatory Guides are not substitutes for regula-tions, and compliance with them Is not required.

Methods and solutions different from those set out in the guides will be acceptable if they pro-vide a basis for the findings requisite to the issuance or continuance of a permit or license by the Commission.

This guide was Issued after consideration of comments received from the public. Comments and suggestions for improvements in these guides are encouraged at all times, and guides will be revised, as ap-propriate, to accommodate comments and to reflect new information or experience.

Written comments may be submitted to the Regulatory Publications Branch, DFIPS, ADM, U.S. Nuclear Regulatory Commission, Washing-ton, DC 20555.The guides are issued in the following ten broad divisions:

1. Power Reactors 6. Products 2. Research and Test Reactors

7. Transportation

3. Fuels and Materials Facilities

8. Occupational Health 4. Environmental and Siting 9. Antitrust and Financial Review 5. Materials and Plant Protection

10. General Copies of issued guides may be purchased from the Government Printing Office at the current GPO price. Information on current GPO prices may be obtained by contacting the Superintendent of Documents, U.S.Government Printing Office, Post Office Box 37082, Washington, DC 20013-7082, telephone

(202)512-2249 or (202)512-2171.

Issued guides may also be purchased from the National Technical Infor-mation Service on a standing order basis. Details on this service may be obtained by writing NTIS, 5285 Port Royal Road, Springfield, VA 22161.

Office of Management and Budget, Approval No.3150-0011.

B. DISCUSSION

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-.vide for alternative requirements under special cir-.cumstances.

Most Code Cases are eventually superseded by revision to the Code and then are annulled by action of the ASME. In such cases, the intent of the annulled Code Case becomes part of the revised Code, and therefore continued use of the Code Case intent is sanctioned under the rules of the Code. In other cases, the Code Case is annulled because it is no longer acceptable or there is no further requirement for it. A Code Case that was approved for a particular situation and not for a generic: application should be used only for construction of the approved situation because annulment of such a Code Case could result in construction that would not meet Code requirements.

The Code Cases listed in this guide are limited to those cases applicable to Section III that are oriented toward design and fabrication.

All published Code Cases in the area of design and fabrication that are applicable to Section III of* the Code and were in effect on August 14, 1991.were reviewed for inclusion in this guide. In addition to the listing of acceptable Code Cases, this revision of the guide includes listings of (1) Code Cases that were identified as acceptable in a prior version of this regulatory guide and that were annulled after the original issuance of this guide (June 1974) and (2) Code Cases that were identified as acceptable in a prior version of this regulatory guide and that were;superseded by revised Code Cases after the original issuance of this guide (June 1974). Code Cases that are not listed herein are either not endorsed or will require supplementary provisions on an individual basis to attain endorsement status.The endorsement of a Code Case by this guide: constitutes acceptance of its technical position for applications not precluded by regulatory or other requirements or by the recommendations in this or other regulatory guides. Contingent endorsement is, indicated in regulatory position C.1.c for specific: cases. However, it is the responsibility of the user to make certain that no regulatory requirements are: violated and that there are no conflicts with other*Lines indicate substantive changes from Revision 28.recommended limitations resulting from Code Case usage.Acceptance or endorsement by the NRC staff applies only to those Code Cases or Code Case revisions with the date of ASME approval as shown in the regulatory position of this guide. Earlier or later revisions of a Code Case are not endorsed by this guide. New Code Cases will require evaluation by the NRC staff to determine if they qualify for inclusion in the approved list. Because of the continuing change in the status of Code Cases, it is planned that this guide will require periodic updating to accommodate new Code Cases and any revisions of existing Code Cases.C. REGULATORY

POSITION 1. The Section III ASME Code Cases 2 listed below (by number, date of ASME approval, and title)are acceptable to the NRC staff for application in the construction of components for light-water-cooled nuclear power plants. Their use is acceptable within the limitations stated in the "Inquiry" and "Reply" sections of each individual Code Case, within the limitations of such NRC or other requirements as~may exist, and within the additional limitations recommended by the NRC staff given with the individual Code Case in the listing. The categorization of Code Cases used in this guide is intended to facilitate the Code Case listing and is not intended to indicate a limitation on its usage.a. Design-oriented Code Cases (Code Case number, date of ASME approval, 3 and title): (1) Code Cases applicable to piping design: N-160-1 07-18-85 07-18-88 03-14-91 Finned Tubing for Construc-tion,Section III, Division 1 Ný453-1 11-30-88 Nickel-Chromium-Molybde- num-Copper Stainless Steel (UNS N08925) Seamless and Welded Pipe for Class 2 and 3 Construction Section III, Divi-sion 1 N-454 12-07-87 Nickel-Chromium-Molybde-

12-03-90 num-Copper Stainless Steel (UNS N08925) Wrought Fittings for Class 2 and 3 Construction Section III, Divi-sion 1 2 A numerical listing of the Code Cases appears in the ap-pendix.3 M'hen 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 the ASME.-1.84-2 N-455 12-07-87 Nickel-Chromium-Molybde-

12-03-90 num-Copper Stainless Steel (UNS N08925) Forged Flanges and Fittings for Class 2 and 3 Construction Section III, Division 1 (2) Code Cases applicable to valve design: N-133-3 07-18-85 07-18-88 03-14-91 N-313 05-11-81 11-28-83 11-28-86 11-28-89 Use of SB-148 Alloys 952 and 954 Section III, Division 1, Class 3 Alternate Rules for Half-Coupling Branch Connec-tions,Section III, Division 1 N-394 02-20-84 Restricting Lift to Achieve 07-30-86 Reduced Relieving Capacities

07-30-89 of Full Lift, Nozzle Type, and Flat Seated Safety and Safety Relief Valves for Compress-ible Fluid Applications, Sec-tion III, Division 1, Classes 2 and 3 N-410 12-05-84 Certified Relieving Capacities

07-27-88 of Pressure Relief Valves 03-14-91 Having Set Pressure of 3 psig up to but Not Including

15 psig Installed for Overpressure Protection of Compressible Fluid Systems,Section III, Division 1, Classes 2 and 3 N-442 02-23-87 1977 Addendum to ANSI/04-30-90 ASME PTC 25.3-1976, Safety and Safety Relief Valves, Class 1, 2, 3, and MC,Section III, Division 1 N-309-1 12-05-85 Identification of Materials for 07-27-88 Component Supports, Section 03-14-91 Ill, Division 1 N-411-1 02-20-86 Alternative Damping Values 02-20-89 for Response Spectra Analysis of Classes 1, 2, and 3 Piping,Section III, Division 1 Code Case N-411-1 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: (1) The Code Case damping should be used completely and consistently, if used at all. (For equipment other than piping, the damping values specified in Regulatory Guide 1.61, "Damping Values for Seismic Design of Nuclear Power Plants," should be used.) (2) The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been em-ployed. Such use should be limited only to re-sponse spectral analyses (similar to that used in the study supporting its acceptance-Reference NUREG/CR-3526).

The acceptance of the use with other types of dynamic analyses (e.g., time-history analysis or independent support motion method) is pending further justification.

(3)When used for reconciliation work or for support optimization of existing designs, the effects of in-creased motion on existing clearances and on line mounted equipment should be checked. (4) This Code Cage is not appropriate for analyzing the dynamic response of piping systems using sup-ports 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-ble to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.N-420 02-14-85 Linear Energy Absorbing Sup-02-14-88 ports for Subsection NF, 03-14-91 Classes 1, 2, and 3 Construc-tion,Section III, Division 1 Code Case N-420 is acceptable subject to the: fol-lowing conditions in addition to those conditions specified in the Code Case. Each applicant desir-ing to use the Code Case should provide the fol-lowing information prior to implementing the Case: (1) indication of systems in which energy-absorbing supports are to be used, (2) fatigue de-sign, (3) piping system analysis results considering inelastic behavior of supports, and (4) plans for inservice examination of energy absorbers.

N-433 12-16-86 Non-Threaded Fasteners for 12-16-89 Section III, Division 1, Class 1, 2, and 3 Component and Piping Supports, Section IIi, Division 1 (3) Other Code Cases related to design: I N-119-6 09-05-85 07-27-88 03-14-91 N-196-1 01-08-79 01-21-82 01-21-85 01-21-88 12-03-90 N-243 08-30-79 07-16-82 05-19-85 05-19-88 03-14-91 N-247 07-09-79 01-21-82 01-21-85 01-21-88 03-14-91 Pump Internal Items, Section Ill, Division 1, Class 1, 2, and 3 Exemption from the Shake-down Requirements When Plastic Analysis is Performed for Section III Division 1, Class 1 and CS Construction Boundaries Within Castings Used for Core Support Struc-tures,Section III, Division 1, Class CS Certified Design Report Sum-mary for Component Stan-dard Supports,Section III, Division 1, Class 1, 2, 3 and MC I 1.84-3 N-476 05-06-89 Class 1, 2, 3, and MC Linear Component Supports-Design Criteria for Single Angle Members,Section III, Divi-sion 1, Subsection NF b. Fabrication-oriented Code Cases: (1) Code Cases related to welding and brazing: N-154-1 12-05-85 Projection Resistance Welding 12-05-88 of Valve Seats,Section III, Division 1, Class 1, 2 and 3 Valves N-262 01-07-80 Electric Resistance Spot 09-07-82 Welding for Structural Use in 09-05-85 Component Supports, Section 07-27-88 III, Division 1 in the Code Case: The following typographical er-rors need to be corrected:

1. In equation (3) the + sign should be changed to an = sign.2. In equation (4) the first + sign should be changed to an = sign.N-392-1 12-11-89 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attach-ments on Classes 2 and 3 Pip-ing,Section III, Division 1 Code Case N-392-1 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys-tem where the Case is to be applied.N-393 11-28-83 Repair Welding Structural

07-30-86 Steel Rolled Shapes and 07-30-89 Plates for Component Sup-ports,Section III, Division 1 N-395 12-11-89 Laser -Welding,Section III, Division 1 N-452 03-08-89 Specialized Subcontracted Welding Process (Electron Beam Welding),Section III, Division I N-464 03-08-89 Laser Welding of Lap-Joints,Section III, Division 1, Class 2 and 3 Construction

(2) Other Code Cases related to fabrication:

03-14-91 N-304-4 02-23-87 12-11-89 N-315 02-14-83 02-19-86 02-19-89 Use of 20Cr-25Ni-6Mo (Alloy UNS N08366) Plate, Sheet, Strip and Welded Pipe, Class 2 and 3 Section III, Division 1 Repair of Bellows,Section III, Division 1 Code Case N-315 is acceptable subject to the fol-lowing conditions in addition to those conditions specified in the Code Case: Prior to implementa- tion of the Code Case, the applicant should pre-sent a description of the repair and a justification why the bellows should be repaired rather than replaced.

Following receipt of approval for the repair, but prior to making the repair, the appli-cant should present the results of the qualification on the full-scale facsimile bellows, including the design requirements, to ensure that the repair meets the requirements of the design specifica- tion.I I I N-316 12-11-81 09-17-84 09-17-87 08-14-90 N-345-1 12-13-82 06-30-88 03-14-91 Alternate Rules for Fillet Weld Dimensions for Socket Welded Fittings,Section III, Division 1, Class 1, 2, and 3 Attachment of AMS 5382 Alloy 31 Seat Rings by Fric-tion Welding,Section III, Division 1, Classes 1, 2, and 3 N-240 03-19-79 01-21-82 09-17-84 09-17-87 08-14-90 N-241 07-09-79 01-21-82 09-17-84 09-17-87 12-11-89 N-368 07-06-83 06-30-87 08-14-90 Hydrostatic Testing of Open Ended Piping,Section III, Division 1 Hydrostatic Testing of Piping,Section III, Division 1 Pressure Testing of Pump Discharge,Section III, Divi-sion 1, Classes 2 and 3 I N-391-1 07-24-89 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attach-ments on Class 1 Piping, Sec-tion III, Division 1 Code Case N-391-1 is acceptable subject to the following conditions in addition to those specified Code Case N-368 is acceptable subject to the fol-lowing condition in addition to those conditions specified in the Code Case: Applicants using this Code Case should provide information to demon-strate that the length of discharge piping is rea-sonably short.N-369 02-14-83 Resistance Welding of Bel-02-19-86 lows,Section III, Division 1 02-19-89 1.84-4 N-414 02-20-86 Tack Welds for Class 1, 2, 3 02-20-89 and MC Components and Piping Supports,Section III, Division 1 N-430 02-28-86 Alternative Requirements for 02-28-89 Welding Workmanship and Visual Acceptance Criteria for Class 1, 2, 3 and MC Linear-Type and Standard Supports,Section III, Division 1 Code Case N-430 is acceptable subject to the fol-lowing conditions in addition to those conditions specified in the Code Case: (1) The applicant should demonstrate that the applicable supports are not subject to cyclic loading in excess of 20,000 cycles and (2) the first sentence of 3.0(f)(1)

should be replaced with the following: "For material 3/8 in. and less nominal thickness, undercut depth of 1/32 in. on one side of the member for the full length of the weld, or 1/32 in. on one side for one-half the length of the weld, and 1/16 in. for one-fourth the length of the weld on the face of a rectangular tube or one-fourth the length of the weld on the same side of the member is acceptable." c. Code Cases with contingent approval: manufacturers should also meet the provisions of NCA 4000.1720-2 11-20-78 (N-106-2)

08-28-81 09-17-84 09-17-87 08-14-90 Weld End Preparation for Section III, Division 1 Con-struction I I N-31-1 07-18-85 Elastomer Diaphragm Valves, 07-18-88 Section III, Class 2 and 3 03-14-91 Code Case N-31-1 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: Each applicant who applies the Code Case should indicate in the referencing Safety Analysis Report that the serv-ice life of the elastomer diaphragm should not ex-ceed the manufacturer's recommended service life. This recommended service life should not exceed 1/3 of the minimum cycle life as estab-lished by the requirements of paragraph

3 of the Code Case. In addition, the service life of the elastomer diaphragm should not exceed 5 years, and the combined service and storage life of the elastomer diaphragm should not exceed 10 years.N-62-6 12-11-89 Internal and External Valve Items,Section III, Division 1, Class 1, 2 and 3 Code Case N-62-6 is acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The Code re-quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve Code Case 1720-2 (N-106-2)

is acceptable sub-ject to the following condition in addition to those conditions specified in the Code Case: The ac-ceptance of weld end preparations other than those shown in Figures 1, 2, and 3 of the Code Case should be evaluated on a case-by-case basis.1792-2 01-08-79 Fiberglass Reinforced Ther-(N-155-2)

01-21-82 mosetting Resin Pipe, Section 01-21-85 III, Division 1 01-21-88 03-14-91 Code Case 1792-2 (N-155-2)

is acceptable sub-ject to the following condition in addition to those conditions specified in the Code Case: The appli-cant should comply with the additional require-ments that are specified in Regulatory Guide 1.72, "Spray Pond Piping Made from Fiberglass- Reinforced Thermosetting Resin." N-192-2 09-16-81 Use of Braided Flexible Con-09-17-84 nectors,Section III, Division 09-17-87 1, Class 2 and 3 08-14-90 Code Case N-192-2 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: The applicant should indicate system application, design and operating pressure, and pressure-temperature rat-ing of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC/ND-3649.4(e), are re-quired to be furnished with the application.

N-284 08-25-80 Metal Containment Shell 05-25-83 Buckling Design Methods, 07-30-86 Section III, Division 1, Class 07-30-89 MC Code Case N-284 is acceptable subject to the fol-lowing condition in addition to those conditions specified in the Code Case: Prior to implementa- tion of the Code Case, the applicant must dem-onstrate to the satisfaction of the NRC staff (via Safety Analysis Report) that any axisymmetric techniques that are proposed will be applicable to a vessel having large asymmetric openings and that the overall margin used to prevent shell buckling is acceptable.

1.84-5 N-292 01-05-81 Depositing Weld Metal Prior 11-28-83 to Preparing Ends for Weld-07-30-86 ing,Section III, Division 1, 07-30-89 Class 1, 2, and 3 Construction Code Case N-292 is acceptable subject to the fol-lowing conditions in addition to those conditions specified in the Code Case: Class 3 piping that is longitudinally welded and that has a weld effi-ciency factor of 1.0 as selected from Table ND-3613.4-1 should receive a 100 percent volumetric examination (RT or UT) of the depos-ited weld metal in accordance with the require-ments of ND-5000.N-318-4 12-11-89 Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping,Section III, Division 1 Code Case N-318-4 is acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys-tem where the Case is to be applied.2. Code Cases that were endorsed by the NRC in a prior version of this guide and were later annulled by action of the ASME should be considered as deleted from the list of acceptable Code Cases as of the date of the ASME action that approved the annulment.

Such Code Cases, which were annulled on or after July 1, 1974, are listed below by number, effective dates, 4 and title.5 1361-2 03-09-72 Socket Welds,Section III 03-01-79 Code Case 1361-2 was acceptable when used in connection with Section III, paragraph NB-3356, Fillet Welds.1461-16 03-09-72 Electron Beam Welding, Sec-02-16-77 tion 1, 111, and VIII, Division 1 and 2 4 Earlier date-date Code Case was approved by ASME;later date-date Code Case was annulled.

Where more than two dates appear, the last date is the date that the Code Case was annulled.

The middle date (or dates) was the date of re-affirmation of the Code Case.5 Code Cases 1355-3, 1534, and 1554, which were listed in the original issue of this guide, were annulled by ASME action prior to July 1, 1974.6 Code Case 1461-1 is no longer listed as a Section III Code Case and is therefore deleted from the acceptable listing.1470-27 12-18-72 External Pressure Charts for 11-04-74 High-Strength Carbon Steels and for Low-Alloy Steels,Section VIII, Division 1 and 2, and Section III 1471-1 03-09-72 Vacuum Electron Beam 01-01-78 Welding of Tube Sheet Joints,Section III 1477-1 03-09-72 Use of 1970 Addenda of 01-01-78 ANSI B31.7,Section III 1494-1 03-03-73 Weld Procedure Qualification

01-01-78 Test,Section III 1506 12-13-71 Stress Intensification Factors, 01-01-78 Section III, Class 2 and 3 Piping 1516-2 08-11-75 Welding of Seats or Minor In-(N-24) 07-01-78 ternal Permanent Attach-ments in Valves for Section III Applications

1516-2 11-20-788 Welding of Seats or Minor In-(N-24) 01-01-80 ternal Permanent Attach-ments in Valves for Section III Applications

15339 06-14-72 Pressure Temperature Ratings 07-01-75 of SA-351 Grades CF8A, CF3, and CF3M,Section III 1535-2 04-30-73 Hydrostatic Testing of Section 03-21-77 III, Class 1 Valves 1536 08-14-72 Closing Seam for Electrical

07-01-77 Penetrations for Section III, Class 2, 3, and MC 1539-1 11-21-77 Metal Bellows and Metal (N-30-1) 01-01-81 Diaphragm Stem Sealed Valves,Section III, Division 1, Classes 1, 2, and 3 1541-3 05-15-78 Hydrostatic Testing of Em-(N-32-3) 07-01-79 bedded Class 2 and Class 3 Piping for Section III, Divi-sion 1 Construction N-32-4 03-16-81 Hydrostatic Testing of Ern-03-16-84 bedded Class 2 and 3 Piping for Section III, Division 1 Construction Code Case N-32-4 was. acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: 7 The annulment of Code Case 1470-2 was effective upon ASME approval of Code Case 1630. However, because of an oversight, the annulment was not noted until publication of Supplement No. 13 to the 1974 Code Cases.eThis revision of the Code Case was originally approved by 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 Addenda. However, the users did not believe that the Code Case was covered in the Code revision;

therefore, ASME reaf-firmed the Case on 11-20-78.

Because of these circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period 7-1-78 through 11-20-78.9 Code Case was annulled on date as indicated, but the an-nulment was first indicated in Revision 12 to this guide.i.84-6 The acceptance was based on the following clari-fication and interpretation.

Code Case N-32-4 does not replace paragraph NC/ND 6129, "Provi-sions for Embedded or Inaccessible Welded Joints in Piping," of the Code. The intent of the Code Case is to (1) provide additional testing above Code requirement and (2) permit liquid penetrant or magnetic particle testing in place of radiographic testing for Class 3 piping with 3/8" nominal wall thickness or les

s. Paragraph

(1) contains an additional requirement to the Code. It was, therefore, acceptable but un-necessary to include in the Code Case. Paragraph (2) is a variation in the volumetric examination technique and was acceptable as written. Para-graph (3) contains an additional requirement and is not a relaxation of the Code. It was, therefore, acceptable but unnecessary to include in the Code Case.1606-1 12-16-74 Stress Criteria Section III, 07-01-77 Classes 2 and 3 Piping Subject to Upset, Emergency, and Faulted Operating Conditions Code Case 1606-1 was acceptable subject to the interpretation that the stress limit designations of"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.

1607-1 11-04-74 Stress Criteria for Section III, 07-01-77 Classes 2 and 3 Vessels Designed to NC/ND-3300

Excluding the NC-3200 Alternate Code Case 1607-1 was acceptable subject to the interpretation that the stress limit designations of"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.

N-55-1 04-05-84 Inertia and Continuous Drive (1609) 04-05-87 Friction Welding, Section I1I, Division 1 1552-1 (N-35-1)1553-19 08-29-77 07-01-79 03-03-75 01-01-76 Design by Analysis of Section III, Class 1 Valves Upset Heading and Roll Threading of SA-453 for Bolt-ing in Section III 1555-1 01-14-77 Certification of Safety Relief 01-01-78 Valves,Section III, Division 1 1569 03-03-7510

Design of Piping for 07-01-79 Pressure Relief Valve Sta-tion,Section III Code Case 1569 was acceptable subject to com-pliance with the recommendations contained in Regulatory Guide 1.67, "Installation of Over-pressure Protection Devices." 1573 04-30-73 Vacuum Relief Valves, Sec-01-01-78 tion III 1574 04-30-73 Hydrostatic Test Pressure for 12-31-74 Safety Relief Valves,Section III 1580-1 11-05-73 Buttwelded Alignment Toler-01-01-78 ance and Acceptable Slopes for Concentric Centerlines for Section III, Class 1, 2, and 3 Construction

1614 12-17-7310Hydrostatic Testing of Piping 01-01-79 Prior To or Following the In-stallation of Spray Nozzles for Section III, Classes 1, 2, and 3 Piping Systems 1620 03-02-74 (N-61) 01-08-79 01-08-82 Stress Category for Partial Penetration Welded Penetra-tions,Section III, Class 1 Construction

1623 1581 06-25-73 03-01-79 1588 08-13-73 (N-46) 03-19-79 03-19-82 1601 11-05-73 07-01-74 Power-Operated Pressure Re-lief Valves,Section III Electro-Etching of Section III Code Symbols Limits of Reinforcement for Two-Thirds Area,Section III, Class 1 03-02-74 Design by Analysis for Section 03-01-79 III, Class I Sleeve-Coupled and Other Patented Piping Joints 1630-1 07-10-78 External Pressure Charts for (N-66-1) 07-10-81 High Yield Strength Carbon Steels and Low Alloy Steels.(Yield Strength above 38 Ksi to 60 Ksi Inclusive.)

For Sec-tion III, Class 1, 2, 3, and MC 1°Corrected date.1.84-7

1630-1 12-11-8111 External Pressure Charts for (N-66-1) 12-05-84 High Yield Strength Carbon 12-05-87 Steels and Low Alloy Steels.(Yield Strength above 38 Ksi to 60 Ksi Inclusive.)

Section III, Division 1, Class 1, 2, 3, and MC 1633 04-29-74 Brazing of Seats to Class 1, 2, 01-01-78 and 3 Valve Body or Bonnets,Section III 1635-112 08-12-74 Stress Criteria for Section III, 07-01-77 Class 2 and 3 Valves Sub-jected to Upset, Emergency, and Faulted Operating Conditions Code Case 1635-1 was acceptable subject to the interpretation that the stress limit designations of"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.

1636-112 08-12-74 Stress Criteria for Section III, 07-01-77 Class 2 and 3 Pumps Sub-jected to Upset, Emergency, and Faulted Operating Conditions Code Case 1636-1 was acceptable subject to the interpretation that the stress limit designations of"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.

1660 11-04-74 Overpressure Protection Un-(N-77) 03-01-79 der Emergency Operating Conditions for Section III, Class 1 1661 11-04-74 Postweld Heat Treatment 01-01-78 P-No. 1 Materials for Section III, Class 1 Vessels 1662 11-04-74 Shop Assembly of Compo-01-01-78 nents, Appurtenances and Piping Subassemblies for Sec-tion III, Class 1, 2, 3 and MC Construction

1665 11-04-74 Pressure-Temperature Ratings (N-81) 07-01-78 for Class 1 Valves Made from 5 Cr-1/2 Mo,Section III 1672 11-04-74 Nuclear Valves for Section 03-21-77 III, Division 1, Class 1, 2, 3 Construction

1675 12-16-74 Tubesheet to Shell or Formed 07-01-76 Head Weld Joints,Section III, Class 1 Vessels 16769 12-16-74 Clarification of Stress Intensi-07-01-76 ties in Curved Pipe or Welded Elbows,Section III 1677 12-16-74 Clarification of Flange Design (N-82) 03-01-79 Loads,Section III, Class i, 2, and 3 1678 12-16-74 Butterfly Valves of Circular 01-08-79 Cross Section Larger than 24 01-01-80 in. NPS for Section III, Class 2 and 3 Construction

16 81-113 03-03-75 Organizations Accepting (N-84) 03-01-79 Overall Responsibility for Sec-tion III Construction

1683-1 03-01-76 Bolt Holes for Section III, 07-01-76 Class 1, 2, 3 and MC Compo-nent Supports 1685 04-28-75 Furnace Brazing Section III, 01-01-78 Class 1, 2, 3 and MC Con-struction 1686 03-03-75 Furnace Brazing,Section III, 01-01-78 Subsection NF, Component Supports 1689-1 09-10-76 Alternate PWHT Time and 01-01-78 Temperature for SA-182 Grade F-22, SA-387 Grade 22, Class 2, and SA-335 Grade P-22 Section III, Class 1, 2, 3 and CS Code Case 1689-1 was acceptable subject to the following condition in addition to that specified in the Code Case: The alternate postweld heat treat-ment should be prequalified along with the appli-1 3 Code Case 1681 was approved by ASME on 12-16-74 and revised on 3-3-75. Because Code Case 1681 was not in effect on March 31, 1975, the Code Case was not included in this guide.1651 1657 1659 08-12-74 Interim Requirements for Cer-03-01-79 tification of Component Sup-ports,Section III, Subsection NF 11-04-74 Stress Criteria for Class 2 07-01-77 and 3 Atmospheric and Low Pressure (0-15 psig) Steel Storage Tanks 11-04-74 Interconnection of Two Piping 07-01-77 Systems for Section Ill, Class 1, 2, and 3 Construction"The Code Case was annulled on July 10, 1981 (ASME mandatory annulment date). It was reinstated on Decem-ber 11, 1981. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 7-10-81 through 12-11-81.'2 Code Cases 1635 and 1636 were approved by ASME on July 1, 1974, and revised on August 12, 1974. Because Code Cases 1635 and 1636 were not in effect on September

1, 1974, they are not included in this guide.1.84-8 cable welding procedure in accordance with ASME Section IX.1692 04-28-75 Rules for Design of Welded (N-90) 07-01-78 Class 1 Pumps 1695-1 11-03-75 Brazing,Section III, Division 01-01-78 1, Class 3 1700 11-03-75 Determination of Capacities (N-94) 03-19-79 of Liquid Relief Valves, Sec-03-19-82 tion III, Division 1, Class 1, 2, and 3 1701-2 07-09-79 Determination of Capacities (N-95-2) 07-09-82 of Vacuum Relief Valves,Section III, Division 1, Classes 2, 3, and MC and Division 2 Concrete Contain-ments 1702-1 07-11-77 Flanged Valves Larger than (N-96-1) 01-01-80 24 inches for Section III, Division 1, Class 1, 2 and 3 Construction

1703 06-30-75 Brazing of Copper Alloys Sec-01-01-78 tion III, Class 2 1706 06-30-75 Data Report Forms for Com-12-31-75 ponent Supports,Section III, Class 1, 2 and 3 1711 11-03-75 Pressure Relief Valve Design (N-100) 01-08-79 Rules,Section III, Division 1, 01-21-82 Class 1, 2 and 3 01-01-83 Code Case 1711 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. The following information should be provided in the Safety Analysis Report: (1) If stress limits are used in excess of those specified for the upset operating condition, it should be demonstrated how the pressure relief function is ensured. Refer to para-graph 3. 1,Section I, of the Case for Class 1 and paragraph

3.2,Section II, of the Case for Class 2 and 3 pressure relief valves.(2) If Case 1660 is to be used in conjunction with this Case, it should be stated that the stress limits of Case 1660 supersede those of paragraph

3.2(b),Section I, of Case 1711.Functional assurance of (1) above is re-quired in all situations.

1712 08-11-75 Nameplates and Stamping for (N-101) 03-01-79 Section III, Division 1, Class 1, 2, 3 and MC Construction as Referenced in NA-8300 17189 08-11-75 Design of Structural Connec-07-01-76 tions for Linear Type Compo-nent Supports,Section III, Division 1, Class 1, 2 and 3 and MC 17199 08-11-75 Single-Welded, Full-Penetra-

07-01-76 tion Sidewall Butt Joints in Atmospheric Storage Tanks,Section III, Division 1, Class 2 1726 11-03-75 Refinement of Low Alloy (N-109) 03-01-79 Steel Heat Affected Zone Un-der Overlay Cladding,Section III, Division 1, Class 1 Com-ponents 1727 12-22-75 Alternate Test Fluids, Section (N-110) 01-01-79 III, Division 1 Code Case 1727 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The applicant should provide justification in the referencing Safety Analysis Report for the fluid selected for use in the pressure test. The information pro-vided should demonstrate that the fluid selected will not have deleterious effects on the material of the pressure boundary and that the fluid may be safely used at the specified temperature and pressure of the test. When the fluid selected for use is the operating fluid, additional information is not required.1729 11-03-75 Minimum Edge Distance-(N-111) 03-01-79 Bolting for Section III, Divi-sion 1, Class 1, 2, and 3 and MC Construction of Compo-nent Supports 1732 11-03-75 Hardsurfaced Valves with In-(N-114) 01-01-79 let Connections less than 2-in.Nominal Pipe Size for Section III, Division 1 Class 1 and 2 Construction

1733 11-03-75 Evaluation of Safe Shut Down (N-115) 01-01-78 Earthquake Loadings for Sec-tion III, Division 1, Class MC Containment Vessels 1734 11-03-75 Weld Design for Use for Sec-(N-116) 01-01-78 tion III, Division 1, Class 1, 2, 3 and MC Construction of Component Supports Code Case 1734 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: If the configu-ration of Figure 1 of the Code Case is used for Class 1 and MC component supports, full pene-tration welds should be used. The application of the configuration shown in Figures 2 and 3 should be restricted to the welding of cans for spring encapsulation in spring hangers. In Figure 3, the length of the leg of the fillet weld adjacent 1.84-9 to the plate should be equal to the thickness of the exposed end of the plate; also, the leg of the fillet weld adjacent to the shell should be equal to the thickness of the exposed end of the shell.1739-4 11-17-80 Pump Internal Items, Section (N-119-4)

12-01-83 III, Division 1, Class 1, 2, and 3 1744 03-01-76 Carbon Steel Pipe Flanges (N-121) 03-01-79 Larger than 24 in.,Section III, Division 1, Class 2 and 3 Construction

1765 04-26-76 Machining After Hydrostatic

07-01-77 Testing Class 2 and 3 Construction,Section III, Di-vision 1 1768 06-29-76 Permanent Attachments to 01-01-78 Containment Vessels-Class MC,Section III, Division 1 1769-1 02-16-77 Qualification of NDE Level 10-01-77 III Personnel,Section III, Di-vision 1 1774-1 07-11-77 Minimum Wall Thickness for (N-142-1)

01-01-80 Class 2 and 3 Valves,Section III, Division 1 1775 08-13-76 Data Report Forms for Core 08-13-79 Support Structures, Class CS,Section III, Division 1 1780-1 07-10-78 1 0 Hydrostatic (N-146-1)

12-11-81 Stamping , of 01-01-82 Section III, Construction Testing and Components, Division 1 the following: "The certification of the Level III nondestructive examination personnel for the purpose of this Section of the Code shall be the responsibility of the employer of the Level III in-dividual.

If the employer is not a Certificate Holder, then the verification of such certificate is the responsibility of the Certificate Holder." 1791 01-14-77 Projection Resistance Welding (N-154) 01-14-80 of Valve Seats,Section III, Division 1, Class 1, 2 and 3 Valves 1796 01-14-77 Body Neck Thickness Deter-(N-159) 07-01-78 mination for Valves with Inlet Connections

4-Inch Nominal Pipe Size and Smaller, Sec-tion III, Division 1, Class 1, 2, and 3 1808 02-16-77 F-Number Classification of 01-01-78 Low Alloy and Carbon Steel Bare Rod Electrodes Sec-tions I, II, III, IV, V, VIII, and IX 1812 03-23-77 Size of Fillet Welds for Socket (N-174) 01-07-80 Welding of Piping, Section 01-01-81 III, Division 1 1818 03-23-77 Welded Joints in Component (N-175) 07-01-79 Standard Supports,Section III, Division 1 Code Case 1818 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: That portion of the unwelded housing that is limited to 900 maxi-mum should include a minimum of two sectors that are uniform in length.N-179 07-11-77 Openings in Valves for Sec-07-11-80 tion III, Division 1, Class 1, 2 and 3 Construction N-182 07-11-77 Alternate Rules for Procedure 07-01-81 Qualification Base Material Orientation,Section III, Divi-sion 1, Class 2 and 3 Con-struction N-184 07-11-77 Roll Threading of SA-453 07-01-79 Bolting for Section III, Divi-sion 1, Class 1, 2, 3 or CS Construction N-189 08-29-77 Primary Membrane Plus Pri-07-01-79 mary Bending Stress Intensity Limits for Other Than Solid Rectangular Sections for Sec-tion III, Division 1, Class MC Construction N-193 11-21-77 Use of SB-61 and SB-62 11-21-80 Bronze for Section III, Di-vision 1, Class 3 Flange and Socket Weld End Valves Code Case 1780-1 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: On a generic basis, the application of the Code Case is limited to pumps and valves. Application to other com-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 will impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly.

A closure fix-ture for the part being tested that is similar in size and shape to the actual mating part is considered adequate 'to impose these loads. It is not intended that piping reaction loadings be simulated in the hydrostatic testing.1783-1 01-14-77 Qualification of Nondestruc-

01-01-79 tive Examination Personnel,Section III, Division 1 Code Case 1783-1 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The first sen-tence of paragraph

(1) should be replaced with 1.84-10

N-199 03-20-78 Intervening Elements, Section 01-01-81 III, Division 1, Classes 1, 2, 3 and MC Component Con-struction Code Case N-199 was acceptable subject to the following condition in addition to those condi-tions specified in the Code. Case: The applicant should provide information in the referencing Safety Analysis Report that demonstrates that all intervening elements have been designed in com-pliance with the requirements of the respective design specification.

1693 03-20-78 Welding Procedure Qualifica-(N-212) 01-01-81 tion of Dissimilar Metal Welds When "Buttering".

with Alloy Weld Metal and Heat Treat-ment May Be Involved, Sec-tion III, Division 1, and Sec-tion IX N-214-2 05-25-83 Use of SA-351 Grade CN7M, 12-31-83 for Valves,Section III, Divi-sion 1 N-215 1 4 05-15-78 Integrally Finned Titanium 05-15-81 Tubes,Section III, Division 1, Class 3 Construction N-217-1 01-07-80 Postweld Heat Treatment of 09-07-82 Weld Deposit Cladding on 12-05-84 Classes 1, 2, 3, MC, and CS 09-05-85 Items,Section III, Division 1 02-23-87 N-237-2 05-25-83 07-30-86 12-07-87 07-01-88 Hydrostatic Testing of Inter-nal Piping,Section III, Di-vision 1, Classes 2 and 3 N-238 05-14-79 High Temperature Furnace 01-01-82 Brazing of Seat Rings in Valve Bodies or Bonnets for Section III, Division 1, Class 1, 2, and 3 Valves Code Case N-238 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: The furnace brazing process procedure qualification should in-clude a verification for nonsensitization as given in ASTM A 262-70, Practices A or E, or ASTM A 708-74 whenever materials subject to sensitiza- tion are to be brazed. Documentation is required that a nonsensitizing brazing procedure was em-ployed for valves produced to this Case.N-252 11-19-79 Low Energy Capacitive Dis-07-01-82 charge Welding Method for Temporary or Permanent At-tachments to Components and Supports,Section III, Division 1, and XI Code Case N-252 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: The applicant should indicate in the Safety Analysis Report the application, the material, and the material thick-ness to which the strain gage or thermocouple will be attached by CD welding.N-260-2 12-05-85 Weld Repair of SA-182 Type 12-05-88 316 Forgings,Section III, Di-vision 1, Classes 1, 2, 3, and MC Code Case N-260-2 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Type 308 L welding materials should not be used to repair grade F 316 N forgings because of the difference in strength levels.N-261 05-15-80 Weld Procedure Qualification

12-13-82 for Materials with Impact Re-quirements for Section HII, Division 1, Class 3 Construc-tion N-263 03-17-80 Alternate Thread Forms, Se-03-17-83 ries and Fits for Component Supports,Section III, Divi-sion 1 Code Case N-263 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. The following information should be provided in the Safety N-220 08-28-78 07-13-81 07-13-84 N-226 11-20-78 01-01-80 Code Effective Date for Com-ponent Supports,Section III, Division 1 Temporary Attachment of Thermocouples,Section III, Division 1, Class 1, 2 and 3 Component Construction N-228 03-19-79 Alternate Rules for Sequence 03-19-82 of Completion of Code Data Report Forms and Stamping for Section III, Class 1, 2, 3 and MC Construction N-229 01-08-79 01-21-82 01-21-85 01-21-88 N-233 01-08-79 01-21-82 09-17-84 09-17-87 Alternate Rules for Fabrica-tion Welding SB-148 Alloy CDA 954 for Section III, Di-vision 1, Class 3 Construction Alternate Rules for PWHT of P-No. 6, Group 4 Material for Section III, Division 1, Class 1, 2, or 3 Construction

1 4 Code Case N-215 was annulled effective May 15, 1981. It was removed from active Code Case listing with this Revision 29 of Regulatory Guide 1.84.1.84-11 Analysis Report: (1) a description of the applica-tion, (2) a need for the use of the Code Case, and (3) a demonstration that support design will withstand maximum conditions of loading with the worst combination of thread tolerance.

N-271 03-17-80 Simplified Method for Ana-02-14-86 lyzing Flat Face Flanges with Metal to Metal Contact Out-side the Bolt Circle for Sec-tion III, Class 2, 3, and MC Construction N-272 05-15-80 Compiling Data Report 01-01-82 Forms,Section III, Division 1 N-275 05-15-80 Repair of Welds,Section III, 12-07-82 Division 1 12-31-83 Code Case N-275 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Use of the Code Case is applicable only when the removal of an indication requires that the full weld thickness be removed and, in addition, the backside of the weld assembly joint is not accessible for the re-moval of examination material.

If an indication is removed and weld-metal layers still remain, it is not acceptable to gouge through the wall in order to qualify for use of the Code Case. Instead, ex-amination of the cavity is required when such an indication has been removed.N-276 03-17-80 Welding of SA-358 Pipe, Sec-02-14-83 tion III, Division 1 02-14-86 N-279 05-15-80 Use of Torquing as a Locking 07-13-81 Device for Section III, Divi-sion 1, Class 1, 2, 3, and MC Component Supports Code Case N-279 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: When torquing or other preloading is used as a locking device and the joint is later unloaded or disassembled, the bolting should .be replaced unless it can be demonstrated or proved to the authorized nu-clear inspector that the original bolting has not been permanently strained.N-280 05-15-80 Alternate Rules for Examina-07-01-81 tion of Welds in Section III, Class 3 Storage Tanks N-281 05-15-80 Welding Operator Perform-07-01-81 ance Qualification,Section III, Division 1 N-282 05-15-80 Nameplates for Valves, Sec-05-25-83 tion III, Division 1, Class 1, 2, 07-30-86 and 3 Construction

07-30-89 N-300 11-17-80 Pressure-Temperature Rat-12-01-83 ings, Hydrostatic Tests, and Minimum Wall Thickness of Valves,Section III, Division 1, Class 1 N-302 03-16-81 Tack Welding,Section III, 11-28-83 Division 1, Construction N-309 05-11-81 Identification of Materials for 05-11-84 Component Supports,Section III, Division 1 N-314 05-11-81 Alternate Rules for Thread 05-11-84 Engagement,Section III, Di-vision 1 Code Case N-314 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: Applicants should identify in their Safety Analysis Report (1)the minimum length of thread engagement and (2) the procedure used to establish thread en-gagement.N-320 07-13-81 Alternate PWHT for SA-487, 12-31-83 Grade CA6NM,Section III, Division 1 N-328 12-11-81 Thermit Brazing or Welding 09-17-84 of Nonstructural Attachments, 09-17-87 Section III, Division 1 N-336 06-17-82 Examination of Welds Inac-06-30-83 cessible During Pressure Test,Section III, Division 1, Class MC N-339 06-17-82 Examination of Ends of Fillet 09-17-84 Welds,Section III, Division 1, Classes 1, 2, and MC N-341 06-17-82 Certification of Level III NDE 05-19-85 Examiner,Section III, Divi-02-23-87 sion 1 and 2 07-01-88 N-346 06-17-82 05-19-85 06-30-86 Explosive Welding, III, Division 1 Section N-347 12-07-82 Continuous Electric Resis-12-13-85 tance Seam Welding of P-N0. 8 Materials for Compo-nent Supports,Section III, Division 1 N-349 07-16-82 Pressure Testing Piping Sys-12-31-85 tems,Section III, Division 1, Classes 2 and 3 N-350 12-07-82 Postweld Heat Treatment-

09-05-85 Thickness of Material, Sec-tion III, Division 1 Code Case N-350 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Applicants wish-ing to use this Case for other than P-1 materials should demonstrate that the use of this Case will 1.84-12 not adversely affect the required material proper-ties.N-357 12-13-82 Certification of Material for 05-19-85 Component Supports, Section 07-01-88 III, Division 1, Subsection NF N-359 12-13-82 Weld Connection for Coaxial 12-31-84 Cylinders,Section III, Divi-sion 1, Class 1 N-362-2 07-12-84 Pressure Testing of Contain-04-05-87 ment Items,Section III, Divi-07-27-87 sion 1, Classes 1, 2, and MC 07-01-88 N-376 05-25-83 Pressure Testing of Embedded 07-30-86 Class 2 and 3 Piping,Section III, Division 1.N-377 04-04-83 Effective Throat Thickness of 12-31-83 Partial Penetration Groove Welds,Section III, Division 1, Classes 1, 2, and 3 N-383-1 07-18-85 Weld Repair of SA-182 Aus-09-05-85 tenitic Forgings,Section III, Division 1, Classes 1, 2, and 3 Code Case N-383 was acceptable subject to the'following condition in addition to those condi-tions specified in the Code Case: Applicants who apply the provisions of this Case to permit mate-rial manufacturers to weld repair austenitic forg-ings without re-solution heat treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.N-397 02-20-84 Alternative Rules to the Spec-02-20-87 tral Broadening Procedures of N-1226.3 for Classes 1, 2, and 3 Piping,Section III, Di-vision I Code Case N-397 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case. The Code Case is acceptable for specific plant applications on a case-by-case basis pending revision of Regulatory Guide 1.122, "Development of Floor Design Re-sponse Spectra for Seismic Design of Floor-Supported Equipment or Components." N-412 04-15-85 Alternative Rules for Witness-04-15-88 ing the Piping System Pressure 04-15-91 Tests of Classes 1, 2, and 3 Piping Systems,Section III, Division 1 N-413 02-14-85 Minimum Size of Fillet Welds 02-14-88 for Subsection NF Linear Type Supports,Section III, Division 1 N-421 02-14-85 Brazing Using a Radiant En-05-19-85 ergy Source,Section III, Divi-06-30-86 sion 1 3. Code Cases that were endorsed by the NRC in a prior version of this guide and were superseded by revised Code Cases on or after July 1, 1974, should be considered as not endorsed as of the date of the ASME action that approved the revised version of the Code Cases. These Code Cases that are no longer endorsed are listed in the following by number, effective dates, 1 5 and title.150816 12-13-71 Allowable Stresses, Design In-06-30-75 tensity and/or Yield Strength Values,Section I, III, and VIII, Divisions

1 and 2 1516-1 06-25-73 Welding of Seats in Valves for 08-11-75 Section III Applications

1539 11-06-72 Metal Bellows and Metal Dia-(N-30-1) 11-21-77 phragm Stem Sealed Valves,Section III, Classes 1, 2, and 3 1540-1 03-03-73 Elastomer Diaphragm Valves, 01-14-77 Section III, Classes 2 and 3 1540-2 01-14-77 Elastomer Diaphragm Valves, (N-31) 01-07-80 Section III, Class 2 and 3 02-14-83 07-18-85 Code Case 1540-2 (N-31) was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: Each ap-plicant who applies the Code Case should indi-cate in the referencing Safety Analysis Report that the service life of the elastomer diaphragm should not exceed the manufacturer's recom-mended service life. This recommended service life should not exceed 1/3 of the minimum cycle life as established by the requirements of para-graph 3 of the Code Case. In addition, the serv-ice life of the elastomer diaphragm should not ex-ceed 5 years, and the combined service and stor-age life of the elastomer diaphragm should not exceed 10 years.1541-1 08-43-73 Hydrostatic Testing of Em-09-30-76 bedded Class 2 and Class 3 Piping for Section III Con-struction 1541-2 09-30-76 Hydrostatic Testing of Em-05-15-78 bedded Class 2 and Class 3 Piping for Section III, Divi-sion 1 Construction

1552 12-18-72 Design by Analysis of Section 08-29-77 III, Class 1 Valves 1 5 Earlier date-date Code Case was approved by ASME;later date-date revision of Code Case was approved by ASME.1 6 Code Case 1508 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceplable listing.1.84-13

155 155 160 3 12-18-72 Upset Heading and Roll 03-03-75 Threading of SA-453 for Bolt-ing,Section III 5 12-18-72 Certification of Safety Relief 01-14-77 Valves on Liquids 6 11-05-73 Stress Criteria for Section 111, 12-16-74 Cla~s 2 and 3 Piping Sub-jected to Upset, Emergency, and Faulted Operating Conditions Code Case 1606 was acceptable subject to the in-terpretation that the stress limit designations of"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.

7 11-05-73 Stress Criteria for Section III, 11-04-74 Classes 2 and 3 Vessels Sub-jected to Upset, Emergency, and Faulted Operating Condi-tions Code Case 1607 was acceptable subject to the in-terpretation that the stress limit designations of"Upset," "Emergency," and "Faulted" do not necessarily imply agreement with specified plant conditions applicable to ASME Code Class 2 and 3 components for fluid systems. These designa-tions should be established and justified in the design specifications.

quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.N-62-4 09-05-85 07-27-88 07-24-89 Internal and External Valve Items,Section III, Division 1, Class 1, 2 and 3 160 Code Case N-62-4 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The Code re-quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.N-62-5 07-24-89 Internal and External Valve 12-11-89 Items,Section III, Division 1, Class 1, 2 and 3 Code Case N-62-5 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The Code re-quires that Class 1 and Class 2 valve manufactur- ers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.1630 11-04-74 External Pressure Charts for (N-77) 07-10-78 High Yield Strength Carbon Steels and Low Alloy Steels.(Yield strength above 38 Ksi to 60 Ksi Inclusive.)

For Sec-tion III, Class 1, 2, 3, and MC; and Section VIII, Divi-sion 1 and 2 1683 03-03-75 Bolt Holes for Section III, Di-03-01-76 vision 1, Class 1, 2, 3 and MC Component Supports 1689 06-30-75 Alternate PWHT Time and 09-10-76 Temperature for SA-182 Grade F22 Section III, Class 1, 2, 3 and CS Code Case 1689 was acceptable subject to the following condition in addition to that specified in the Code Case: The alternate postweld heat treat-ment should be prequalified along with the appli-cable welding procedure in accordance with ASME Section IX.1609-1 03-01-76 (N-55) 08-28-78 07-13-81 04-05-84 1621-2 05-25-77 (N-62-2) 05-15-80 05-25-83 07-18-85 Inertia and Continuous Drive Friction Welding,Section I, III, IV, VIII, Division 1 and 2, and IX Internal and External Valve Items,Section III, Division 1, Class 1, 2 and 3 Line Valves Code Case 1621-2 (N-62-2) was acceptable sub-ject to the following.

condition in addition to those conditions specified in the Code Case: The Code.requires that Class 1 and Class 2 valve manufac-turers meet the provisions of NCA 4000, "Quality Assurance," and, in addition, Class 3 valve manufacturers should also meet the provisions of NCA 4000.N-62-3 07-18-85 Internal and External Valve 09-05-85 Items,Section III, Division 1, Class 1, 2 and 3 Line Valves Code Case N-62-3 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The Code re-1695 1701 04-28-75 Brazing,Section II, Class 3 11-03-75 06-30-75 Determination of Capacities

03-20-78 of Vacuum Relief Valves Sec-tion III, Class MC 1.84-14

1701-1 03-20-78 Determination of Capacities (N-95-1) 03-19-79 of Vacuum Relief Valves, 07-09-79 Section III, Division 1 and 2, Class MC 1702 06-30-75 Flanged Valves Larger than 07-11-77 24 inches for Section III, Class 1, 2 and 3 Construc-tion 1720 08-11-75 Weld End Preparation for 03-01-76 Section III, Division 1 Con-struction Code Case 1720 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Weld end preparations other than those shown in Figures 1, 2, and 3 of the Code Case are not acceptable on a generic basis. Such alternative end preparations should be treated on a case-by-case basis.1720-1 03-01-76 Weld End Preparation for 11-20-78 Section III, Division 1 Con-struction Code Case 1720-1 was acceptable subject to the following condition in addition to those condi-t4ons specified in the Code Case: The acceptance of weld end preparations other than those shown in Figures 1, 2, and 3 of the Code Case should be-evaluated on a case-by-case basis.1761 04-26-76 Use of SB-148 Alloy CA954 01-14-77 for Section III, Division 1, Class 2 or 3 Flanged End Valves.01-14-77 Use of SB-148 Alloy CA954, 01-07-80 Section III, Division 1, Class 3 1761-1 (N-133)N-133-1 N-133-2 1769 1774 1780 04-02-82 04-02-82 Use of SB-148 Alloys 952 and 05-19-85 954,Section III, Division 1, Class 3 05-19-85 Use of SB-148 Alloys 952 and 07-18-85 954 Section III, Division 1, Class 3 08-13-76 Qualification of NDE Level 02-16-77 III Personnel,Section III, Di-vision 1 08-13-76 Minimum Wall Thickness for 07-11-77 Class 2 and 3 Valves,Section III, Division 1 09-10-76 Hydrostatic Testing and 03-10-78 Stamping of Pumps for Class 1 Construction,Section III, Di-vision 1 1739-2 08-28-78 (N-119-2)

08-25-80 1739-3 08-25-80 (N-119-3)

11-17-80 Pump Internal .Items,Section III, Division 1, Class 1, 2, and 3 Pump Internal Items,Section III,Division

1, Class 1, 2, and 3 Code Case 1780 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: Each licensing application in which the Code Case is to be used should present information that satisfactorily demonstrates that the subassembly tests ade-quately simulate the pressure loadings.

Also, the closure fixture for the test subassembly should adequately simulate the rigidity of adjacent subas-semblies and also simulate the interface loadings from adjacent subassemblies that would result from a hydrostatic pressure test of a complete pump assembly.

As a minimum, the closure fix-ture should impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly.

It is not intended that piping reaction loadings be simulated in the hydrostatic testing.1739-4 02-20-8417Pump Internal Items, S/ection (N-119-4)

07-18-85 III, Division 1, Class 1, 2, and 3 N-119-5 07-18-85 Pump Internal Items, Section 09-05-85 III, Division 1, Class 1, 2, and 3 1745 03-01-76 Stress Indices for Structural (N-122) 01-08-79 Attachments, Class 1, Sec-01-21-82 01-21-85 01-21-88 07-24-89 tion III, Division 1 1783 09-10-76 Qualification of Nondestruc-

01-14-77 tive Personnel, Division 1 Section III,'7 The Code Case was annulled on December 1, 1983 (ASME mandatory annulment date). It was reinstated on Feb-ruary 20, 1984. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 12-1-83 through 2-20-84.Code Case 1783 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: The first sen-tence of paragraph

(1) should be replaced with the following: "The certification of the Level III nondestructive examination personnel for the purposes of this Section of the Code shall be the responsibility of the employer of the Level III in-dividual.

If the employer is not a Certificate

1.84-15 Holder, then the verification of such certificate is the responsibility of the Certificate Holder." 1791 03-17-8018 Projection Resistance Welding (N-154) 09-09-82 of Valve Seats,Section II, 09-05-85 Division 1, Class 1, 2 and 3 12-05-85 Valves 1797 03-23-77 Finned Tubing for Construc-(N-160) 03-17-80 tion,Section III, Division 1 09-07-82 07-18-85 N-192 01-09-78 Use of Flexible Hose for Sec-08-30-79 tion III, Division 1, Class 1, 2, and 3 Construction Code Case N-192 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. The applicant should indicate system application, design and operating pressure, and pressure-temperature rat-ing of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC/ND-3649.4(e), are re-quired to be furnished with the application.

N-192-1 08-30-79 Use of Flexible Hose for Sec-09-16-81 tion III, Division 1, Class 1, 2, and 3 Construction Code Case N-192-1 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: The applicant should indicate system application, design and operating pressure, and pressure-temperature rat-ing of the flexible hose. Data to demonstrate compliance of the flexible hose with NC/ND-3649, particularly NC/ND-3649.4(e), are re-quired to be furnished with the application.

N-196 01-09-78 Exemption from the Shake-01-08-79 down Requirements When Plastic Analysis is Performed for Section III, Division 1, Class 1 Construction N-237 07-09-79 01-21-82 09-07-82 N-237-1 09-07-82 05-25-83 N-260 01-07-80 05-25-83 07-18-85 Hydrostatic Testing of Inter-nal Piping,Section III, Divi-sion 1 Hydrostatic Testing of Inter-nal Piping,Section III, Divi-sion 1, Classes 2 and 3 Weld Repair of SA-182 Type 316 Forgings,Section III, Di-vision 1, Classes 1, 2, 3, and MC N-260-1 07-18-85 Weld Repair of SA-182 Type 12-05-85 316 Forgings,Section III, Di-vision 1, Classes 1, 2, 3, and MC Code Case N-260-1 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Type 308 L welding materials should not be used to repair grade F 316 N forgings because of the difference in strength levels.N-304 06-11-81 Use of 20Cr-25Ni-6Mo (Alloy 04-05-84 UNS N08366) Welded Tubes 07-12-84 for Section III, Division 1, Classes 2 and 3 Construction N-304-1 07-12-84 Use of 20Cr-25Ni-6Mo (Alloy 05-19-85 UNS N08366) Welded Tubes for Section III, Division°

1, Classes 2 and 3 Construction N-304-2 05-19-85 Use of SB-676 20Cr-25Ni-

12-05-85 6Mo (Alloy UNS N08366)Welded Tubes,Section III, Division 1, Classes 2 and 3 N-304-3 12-05-85 Use of SB-676 20Cr-25Ni-

02-23-87 6Mo (Alloy UNS N08366)Plate, Sheet, Strip and Welded Pipes,Section III, Di-vision 1, Classes 2 and 3 N-309 09-17-8419 Identification of Materials 12-05-85 for Component Supports, Sec-tion III, Division 1 N-318 07-13-81 Procedure for Evaluation of 02-20-84 the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping,Section III, Division 1 Code Case N-318 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping 1 9 The Code Case was annulled on May 11, 1984 (ASME mandatory annulment date). It was reinstated on Septem-ber 17, 1984. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 5-11-84 through 9-17-84.N-214 05-15-78 07-13-81 09-07-82 Use of SA-351, Grade CN7M, for Valves for Sec-tion III, Division 1, Construction N-214-1 09-07-82 Use of SA-351 Grade CN7M, 05-25-83 for Valves,Section II, Divi-sion 1 1 8 The Code Case was annulled on January 14, 1980 (ASME mandatory annulment date). It was reinstated on March 17, 1980. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 1-14-80 through 3-17-80.1.84-16 system involved, and (3) the location in the sys-tem where the Case is to be applied.N-318-1 2 0 02-20-84 Procedure for Evaluation of 07-12-84 the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping,Section III, Division 1 Code Case N-318-1 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the- method of lug attachment, (2) the piping system involved, and (3) the location in the sys-tem where the Case is to be applied.N-318-2 07-12-84 Procedure for Evaluation of 09-05-85 the Design of Rectangular Cross Section Attachments on Class 2 or 3 Piping,Section III, Division 1 Code Case N-318-2 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys--tem where the Case is to be applied.N-318-3 09-05-85 Procedure for Evaluation of 07-27-88 the Design of Rectangular

12-11-89 Cross Section Attachments on Class 2 or 3 Piping,Section II, Division 1 Code Case N-318-3 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case. Applicants should identify in their Safety Analysis Report: (1) the method of lug attachment, (2) the piping system involved, and (3) the location in the sys-tem where the Case is to be applied.N-319 07-13-81 Alternate Procedure for Eval-07-13-84 uation of Stresses in Butt 07-13-87 Weld Elbows in Class 1 Pip-07-24-89 ing,Section III, Division 1 N-319-1 07-24-89 Alternate Procedure for 08-14-90 Evaluation of Stresses in Butt Weld Elbows in Class 1 Pip-ing,Section III, Division 1 N-345 06-17-82 Attachment of AMS 5382 Al-12-13-82 loy 31 Seat Rings by Friction Welding,Section III, Division 1, Classes 1, 2, and 3 2 0 The conditional acceptance was inadvertently omitted in Revision 23 of this guide.N-362 02-14-83 Alternate Rules for Pressure 05-25-83 Testing of Containment Items,Section III, Division 1 N-362-1 05-25-83 Pressure Testing of Contain-07-12-84 ment Items,Section III, Divi-sion 1, Classes 1, 2, and MC N-383 10-05-83 Weld Repair of SA-182 Aus-07-18-85 tenitic Forgings,Section III, Division 1, Classes 1, 2, and 3 Code Case N-383 was acceptable subject to the following condition in addition to those condi-tions specified in the Code Case: Applicants who apply the provisions Of this Case to permit mate-rial manufacturers to weld repair austenitic forg-ings without re-solution heat treatment should provide justification to the NRC staff (via the Safety Analysis Report) why this is acceptable for their applications, including their evaluation of the susceptibility for stress corrosion cracking.N-391 11-28-83 07-30-86 07-24-89 N-392 11-28-83 07-30-86 07-30-89 12-11-89 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attach-ments on Class 1 Piping, Sec-tion III, Division 1 Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded Attach-ments on Classes 2 and 3 Pip-ing,Section III, Division 1 N-411 09-17-84 Alternative Damping Values 02-20-86 for Seismic Analysis of Classes 1, 2, and 3 Piping Sections,Section III, Division 1 Code Case N-411 was acceptable subject to the following conditions in addition to those condi-tions specified in the Code Case: (1) The damp-ing values specified may be used in analyzing pip-ing response for seismic and other dynamic loads being filtered through building structures pro-vided response mode frequencies are limited to 33 Hz and below. Within this range, the Code Case damping should be used completely and consistently, if used at all. (For equipment other than piping, the damping values specified in Regulatory Guide 1.61, "Damping Values for Seismic Design of Nuclear Power Plants," should be used.) (2) The damping values specified may be used only in those analyses in which current seismic spectra and procedures have been em-ployed. Such use should be limited only to re-sponse spectral analyses (similar to that used in the study supporting its acceptance-Reference NUREG/CR-3526).

The acceptance of the use with other types of dynamic analyses (e.g., time-history analysis)

is pending further justification.

(3) When used for reconciliation work or for sup-1.84-17 port optimization of existing designs, the effects of increased motion on existing clearances and on line mounted equipment should be checked.(4) This Code Case is not appropriate for analyz-ing the dynamic response of piping systems using 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-ble to piping in which stress corrosion cracking has occurred unless a case-specific evaluation is made and is reviewed by the NRC staff.N-453 12-07-87 Nickel-Chromium-Molybde-

11-30-88 num-Copper Stainless Steel (UNS N08925) Welded Pipe for Class 2 and 3 Construc-tion,Section III, Divi-sion 1 4. Code Cases for Class 1 components that are not on the approved list of this guide (paragraph C. 1)or other regulatory guides, or for which authorization by the Commission has not been granted, are not acceptable for Class 1 components.

5. Code Cases for other classes of components that are not on the approved list of this guide (paragraph C. 1) or other regulatory guides should be considered not acceptable on a generic basis.

D. IMPLEMENTATION

The purpose of this section is to provide information to applicants regarding the use of this regulatory guide.1. Except for those Code Cases that have been annulled by action of the ASME, the NRC staff has found the Code Cases listed in this regulatory guide under regulatory position C.1 acceptable for appropriate use. Other Code Cases may be considered for use in accordance with footnote 6 of the Codes and Standards rule, §50.55a of 10 CFR Part 50.2. Components ordered to a specific version of a Code Case need not be changed because a subsequent revision to the Code Case is listed as the approved version in this guide.3. Components ordered to a Code Case that was previously approved for use need not be changed because the Code Case has been subsequently annulled.4. Code Cases on the approved list may be applied to components that were in process of construction prior to the effective date of the Cbde Case within the limits specified in the Code Case and applicable regulations or recommended in other 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-4 11-1 N-119-6 N-309-1 N-414 N-133-3 N-313 N-420 N-154-1 N-315 N-430 N-155-2 (1792-2) N-316 N-4 33 N-160-1 N-318-4 N-442 N-192-2 N-345-1 N-196-1 N-368 N-452 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 Federal Recycling Program 1.84-19 f UNITED STATES NUCLEAR REGULATORY

COMMISSION

WASHINGTON, D.C. 20555-0001 FIRST CLASS MAIL POSTAGE AND FEES PAID USNRC PERMIT NO. G-67 OFFICIAL BUSINESS PENALTY FOR PRIVATE USE, $300 120555 O03954' 1 iSP 1iýUS NPC-OTPP 5T\' OF INFO SUIP SVCS B PANVCH CIII F L1PPARY HP 160, WASHINGTON

Pr C 05


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