Regulatory Guide 1.85

1, (Draft Was Issued as DG-1049), Materials Code Case Acceptability ASME Section III, Division 1

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Issue date:	05/31/1999
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A. INTRODUCTION

Section 50.55a, "Codes and Standards," of 10 CFR

Part 50, "Domestic Licensing of Production and Uti lization Facilities," requires, in part, that components of the reactor coolant pressure boundary be designed, fabricated, erected, and tested in accordance with the requirements for Class 1 components of Section III,

"Nuclear Power Plant Components,"' of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code or equivalent quality standards.

Footnote 6 to 10 CFR 50.55a states that the use of spe cific Code Cases may be authorized by the Commission upon request pursuant to 10 CFR 50.55a(a)(3), which requires that proposed alternatives to the described re quirements or portions thereof provide an acceptable level of quality and safety.

General Design Criterion 1, "Quality Standards and Records," of Appendix A, "General Design Crite ria for Nuclear Power Plants," to 10 CFR Part 50 re quires, in part, that structures, systems, and compo nents important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be per

1Copies may be obtained from theAmerican Society of Mechanical Engi neers, Three Park Avenue, New York, New York 10016-599

0. Phone

(212)591-8500; fax (212)591-8501.

Revision 31 May 1999

3UIDE

formed. Where generally recognized codes and stan dards are used, Criterion 1 requires that they be identi fied and evaluated to determine their applicability, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keeping with the required safety function.

Criterion 30, "Quality of Reactor Coolant Pressure 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 es tablished for the control of special processing of materi als and that proper testing be performed.

This regulatory guide lists those Section III ASME

Code Cases oriented to materials and testing that are generally acceptable to the NRC staff for implementa tion in the licensing of light-water-cooled nuclear pow er plants. This guide is being revised to update the NRC

staff positions on new Code Cases, revised Code Cases, and annulled Code Cases subsequent to Revision 30 of the guide in October 1994.

This regulatory guide contains no information collection activities and, therefore, is not subject to the USNRC REGULATORY GUIDES

The guides are issued in the following ten broad divisions:

Regulatory Guides are issued to describe and make availableto the public such informa tion as methods acceptable to the NRC staff for implementing specific parts of the Corn-

1. Power Reactors

6. Products mission's regulations, techniques usedbythestaff in evaluating specificproblemsorpos-

2. Research and Test Reactors

7. Transportation tulated accidents, and data needed by the NRC staff in its review of applications for per-

3. Fuels and Materials Facilities

8. Occupational Health mits and licenses. Regulatory guides are not substitutes for regulations, and compliance

4. Environmental and Siting

9. Antitrust and Financial Review with them is not required. Methods and solutions differentfrom those set out in theguides

5. Materials and Plant Protection

10. General will be acceptable if they provide a basis for the findings requisite to the issuance or con tinuance of a permit or license by the Commission.

Singlecopies of regulatory guides may be obtained free of charge bywriting to the Repro This guide was issued after consideration of comments received from the public. Com- duction and Distribution Services Section, Office of the Chief Information Officer, U.S. Nu ments and suggestionsfor improvements in these guides areencouraged atall times, and clear Regulatory Commission, Washington, DC 20555-0001; or by fax to (301)415-2289;

guides will be revised, as appropriate, to accommodate comments and to reflect new in- or by emall to DISTRIBUTION@NRC.GOV

formation or experience.

Issued guides may also be purchased from the National Technical Information Service on Written comments may be submitted to the Rules and Directives Branch, ADM, U.S. Nu- a standing order basis. Details on this service may be obtained by writing NTIS, 5285 Port clear Regulatory Commission, Washington, DC 20555-0001.

Royal Road, Springfield, VA 22161.

U.S. NUCLEAR REGULATORY COMMISSION

REGULATORY (

OFFICE OF NUCLEAR REGULATORY RESEARCH

REGULATORY GUIDE 1.85 (Draft was issued as DG-1 049)

MATERIALS CODE CASE ACCEPTABILITY

ASME SECTION III, DIVISION 1

requirements of the Paperwork Reduction Act of 1980

(44 U.S.C. 3501 et seq.).

B. DISCUSSION

The Boiler and Pressure Vessel Committee of the ASME publishes a document entitled "Code Cases."1 Generally, the individual Code Cases that make up this document explain the intent of Code rules or provide for alternative requirements under special circum stances.

Most Code Cases are eventually superseded by re vision 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 un der 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 ap proved 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 to ward materials and testing.

All published Code Cases in the area of materials and testing that are applicable to Section III of the Code and were in effect on May 12, 1994,* were reviewed for inclusion in this guide. In addition to the listing of ac ceptable Code Cases, this revision of the guide includes listings of (1) Code Cases that were identified as ac ceptable 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 identi fied 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 en dorsed 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 ap plications not precluded by regulatory or other require ments or by the recommendations in this or other regu latory guides. Contingent endorsement is indicated in Regulatory Position C.l.a for specific cases. However, it is the responsibility of the user to make certain that no regulatory requirements are violated and that there are

• Lines indicate substantive changes from Revision 30.

no conflicts with other recommended limitations re sulting from Code Case usage.

Acceptance or endorsement by the NRC staff ap plies only to those Code Cases or Code Case revisions with the date of ASME approval as shown in the Regu latory 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 deter mine whether 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 pe riodic updating to accommodate new Code Cases and any revisions of existing Code Cases.

C. REGULATORY POSITION

1. ACCEPTABLE CODE CASES

The Section III ASME Code Cases 2 listed below (by number, date of ASME approval, and title) are ac ceptable 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 Cases 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. Materials-Oriented Code Cases (Code Case Number, Date of ASME Approval, 3 and title)

(1)

N-7-1 Code Cases Involving Plate

12-13-82 High Yield Strength Steel, Sec

02-20-86 tion III, Division 1, Class 1

02-20-89 Vessels

02-05-92

(2) Code Cases Involving Pipe and Tubes N-20-3

11-30-88 SB-163 Nickel-Chromium-Iron

12-16-91 Tubing (Alloy 600 and 690)

and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0

Ksi and Cold Worked Alloy

800 at a yield strength of 47.0

Ksi,Section III, Division 1, Class 1

2A numerical listing of the Code Cases appears in the appendix.

3When 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.

1.85-2 Vt L

N-188-1

05-15-78

07-13-81

07-13-84

07-13-87

08-14-90

08-14-93 N-294

08-25-80

05-25-83

07-30-86

07-30-89

07-27-92 N-404

04-05-84

04-05-87

12-11-89

12-11-92 Use of Welded Ni-Fe-Cr-Mo Cu (Alloy 825) and Ni-Cr-Mo Cb (Alloy 625) Tubing,Section III, Division 1, Class 2 and 3 SB-148 Alloy 952 and 954, and SB-62 Alloy 836 Fittings,Section III, Division 1, Class 2 Annealed Alloy UNS N06625 Over UNS N06600 Bimetallic Tubing,Section III, Division 1, Class 1 Code Case N-404 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: The outside layer of the bimetal lic tubing should be limited to a minimum of 5 percent and to a maximum of 40 percent of the wall thickness.

The tolerance on the outside layer of material should not exceed -0.000 to +0.007 inches of the specified de sign wall thickness.

N-418-1

07-30-86 Use of Seamless Ni-Fe-Cr-Mo

07-30-89 Cu Low Carbon (UNS N08028

07-27-92 and UNS N08904) Tubing,Section III, Division 1, Classes

2 and 3 N-439

02-23-87 Use of 20Cr-18Ni-6Mo (Alloy

12-11-89 UNS S31254) Forgings,

12-11-92 Plate, Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction,Section III,

Division 1 N-441-1

11-25-92 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction,Section III,

Division 1 N-466-1

04-30-90 Modified 9Cr-iMo Material,

02-12-93 Section III, Division 1, Classes

1, 2, and 3 N-502

02-05-92 SA-268, Grade 26-3-3 (UNS

S44660)Section III, Division 1, Classes 2 and 3

(3) Codes Cases Involving Bars and Forgings

1337-11

05-15-78 Special Type 403 Modified (N-4-11) 07-13-81 Forgings or Bars,Section III,

07-13-84 Division 1, Class 1 and CS

07-13-87

08-14-90

08-14-93 N-370-2

12-05-85

12-05-88

12-16-91 Modified SA-705 Grade XM-13 Forgings,Section III,

Division 1 N-469

03-08-89 Martensitic Stainless Steel for

04-30-92 Class 1, 2, and 3 Components,Section III, Division 1

(4) Code Cases Involving General Usage N-60-5

02-15-94 Material for Core Support Structures,Section III,

Division 1 Code Case N-60-5 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition. The maximum yield strength of strain hardened austenitic stainless steel should not exceed

90,000 psi in view of the susceptibility of this material to environmental cracking.

N-71-16 02-12-93 Additional Materials for Sub section NF, Classes 1, 2, 3 and MC Component Supports Fabri cated by Welding,Section III,

Division 1 Code Case N-71-16 is acceptable subject to the fol lowing conditions in addition to those conditions speci fied in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the mate rial has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service. In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alter-

1.85-3

nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pre sented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time. Paragraph 16.2.2 is not acceptable as written and should be replaced with the following: When not ex empted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710 Grade A material, it shall be at least 1000'F (540'C) and shall not exceed 1150'F

(620'C) for Class 1 and Class 2 material and 1175°F

(640' C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30

minutes for 1/2 inch or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thick ness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes

1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.

1759-1

05-15-78 Material for Internal Pressure (N-131-1) 07-13-81 Retaining Items for Pressure

12-11-81 Relief Valves,Section III,

12-05-84 Division 1, Class 1, 2, and 3

12-05-87

12-03-90

12-03-93 Code Case 1759-1 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants using this Case should also use Code Case 1711 for the design of pres sure relief valves.

cated Without Welding,Section III, Division 1 Code Case N-249-13 is acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with paragraph

5.3.4 of the USNRC Standard Review Plan (NU

REG-0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, it should be demonstrated by the owner that (1)

the impact test results for the material meet Code re quirements and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corro sive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

N-265-1

05-19-85

05-19-88

03-14-91

03-14-94 N-438-3

07-27-92 N-440

02-23-87

12-11-89

12-11-92 Modified SA-487 Castings,Section III, Division 1, Class 1 UNS N08367 Material,Section III, Division 1, Class 2 and 3 Construction Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction,Section III, Division 1 U

N-443-1

03-08-89 High Yield Strength Cr-Mo

04-30-92 Steel, Class 1 Components,Section III, Division 1 N-205

05-15-78

07-13-81

07-13-84

07-13-87

08-14-90

08-14-93 N-246-2 05-25-83

07-30-86

07-30-89

07-27-92 N-249-13 05-11-94 Use of Ductile Iron SA-395 for Section III, Division 1, Class 3 Construction SB-169, Alloy C61400, Sec tion III, Division 1, Class 3 N-474-2

12-09-93 N-492-1

05-11-94 N-497-1

12-09-93 Additional Material for Subsec tion NF, Classes 1, 2, 3, and MC Component Supports Fabri- Design Stress Intensities and Yield Strength Values for UNS

N06690 With a Minimum Spe cified Yield Strength of 35 ksi, Class 1 Components,Section III, Division 1 Grade 9 Titanium Alloy, Sec tion III, Division 1, Class 1, 2, and 3 Use of Fe-Ni-Cr-Mo-N

(CN-3MN) Cast Materials, Sec tion III, Division 1, Class 2 and

3 Construction

1.85-4

b. Testing-oriented Code Cases

(1) Code Case Involving Plates

(2) Code Case Involving Bars and Forgings N-329

12-11-81 Examination of Bar Material,

12-05-84 Section III, Division 1, Class 1

12-05-87

12-03-90

12-03-93

(3) Code Case Involving Pipe and Tubes Code Case Involving General Usage

07-16-82 Use of Subsize Charpy V

05-19-85 Notch Specimens, Section

05-19-88 III, Division 1

03-14-91

03-14-94

1334-3 (N-2)

1335-10

(N-3-10)

04-29-74

01-08-79

01-01-81

08-28-78

08-28-81

09-16-84 Requirements for Corrosion Resisting Steel Bars and Shapes,Section III

Requirements for Bolting Materials,Section III

N-5-1

12-13-82 Nickel Chromium Age Harden

12-13-85 able Alloys (Alloy X750),

Section III, Division 1, Classes

1, 2, 3, MC, and CS

1345-2 (N-6)

1395-4 (N-9-4)

03-09-72 Requirements for Nickel

03-01-79 Molybdenum-Chromium-Iron Alloys,Section III

01-08-79 SA-508, Class 2 Forgings with

07-01-82 Modified Manganese Content,Section III

N-484-1

12-16-91 Real Time Radioscopic Ex amination of Welds, Class 1 Components,Section III, Divi sion 1 N-510

12-09-93 Borated Stainless Steel for Class CS Core Support Struc tures and Class 1 Components,Section III, Division 1 N-525

12-09-93 Design Stress Intensities and Yield Strength Values for UNS

N06690 with a Minimum Speci fied Yield Strength of 30 Ksi, Class 1 Components,Section III, Division 1

2. ANNULLED CODE CASES

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 that were annulled on or after July 1, 1974, are listed in the following by number, effective dates, 4 and title.5

1141-1

08-31-61 Foreign Produced Steel

07-23-76

1332-7 (N-1-7)

01-08-79 Requirements for Steel Forg

07-01-82 ings,Section III, Division 1

4Earlier 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 reaffirmation of the Code Case.

5Code Cases 1401-1,1493-1, and 1599, which were listed in the original issue of this guide, were annulled by ASME action prior to July 1, 1974.

1407-3

07-01-74 (N-10)

01-08-79

01-21-82

09-17-84

09-17-87

1412-4

11-03-75

01-01-77 Time of Examination for Classes 1, 2, and 3,Section III

Vessels Modified High Yield Strength Steel for Section III, Division

1, Class 1 Vessels Code Case 1412-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

The material given in the Inquiry section of the Code Case should be SA-508, Class 4b, instead of SA-508, Class 4.

1414-5 (N-11-5)

08-29-77 High Yield Strength Cr-Mo

08-29-80 Steel for Section III, Division

1, Class 1 Vessels Code Case 1414-5 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

1423-2

03-09-72 Wrought Type 304 and 316

07-01-77 with Nitrogen Added, Sections I, III, VIII, Division 1 and 2 Code Case 1423-2 was acceptable subject to com pliance with the recommendations contained in Regu latory Guides 1.31, "Control of Ferrite Content in Stainless Steel Weld Metal," and 1.44, "Control of the Use of Sensitized Stainless Steel."

1.85-5

(4)

N-351

1434-1

03-09-72 Postweld Heat Treatment of

01-01-78 SA-487 Class 8N Steel Cast ings,Section III

cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

1456-2 (N-15)

06-25-73 Substitution of Ultrasonic Ex

03-01-79 amination for Progressive Penetrant or Magnetic Particle Examinations of Partial Pene tration and Oblique Nozzle At tachment Welds,Section III

1474-1

10-29-71 (N-17)

01-08-79

01-21-82

01-21-85

01-21-88

01-21-91

1475-16

03-02-74

07-01-75 Integrally Finned Tubes for Section III

Ferritic-Austenitic Stainless Steel Seamless Tubes for Sec tion III, Class 2 and 3 Construction

1498-1

11-06-72 SA-508-Class 2 and 3, Mini (N-22)

01-08-79 mum Tempering Temperature,

07-01-82 Section III

1515

03-09-72 Ultrasonic Examination of

07-01-77 Ring Forgings for Shell Sec tions,Section III, Class 1 Ves sels

1521-1

04-29-74 Use of H-Grades of SA-240,

01-01-78 SA-479, SA-336, and SA-358,Section III

Code Case 1521-1 was acceptable subject to com pliance with the recommendations contained in Regu latory Guides 1.31, "Control of Ferrite Content in Stainless Steel Weld Metal," and 1.44, "Control of the Use of Sensitized Stainless Steel."

1527

06-26-727 Integrally Finned Tubes, Sec (N-26)

01-08-79 tion III

01-21-82

01-21-85

01-21-88

01-21-91

1528-3

11-03-75 High Strength Steel SA-508,

01-01-78 Class 2 and SA-541, Class 2 Forgings,Section III, Class 1 Components Code Case 1528-3 was acceptable subject to the following condition in addition to those conditions spe

6Code Case was annulled on date as indicated, but the annulment wasfirst so indicated in Revision 12 of this guide.

7Corrected Date.

15296

06-29-72

07-01-73

1531

08-14-72

03-21-77 Materials for Instrument Line Fittings,Section III

Electrical Penetrations, Special Alloys for Electrical Penetra tion Seals,Section III

1532

08-14-72 Section III, Class 3 Compo

01-01-78 nents Made of 8 Percent and 9 Percent Nickel Steel

1542-1 (N-33)

1557-3 (N-37-3)

04-29-74

01-08-79

01-21-82

01-21-85

01-08-79

07-01-82 Type 403 Forgings or Bars for Bolting Material,Section III

Steel Products Refined by Sec ondary Remelting,Section III

and VIII, Division 1 and 2

1567

03-03-73 Testing Lots of Carbon and

01-01-78 Low Alloy Steel Covered Elec trodes,Section III

1568

03-03-73 Testing Lots of Flux Cored and

01-01-78 Fabricated Carbon and Low Alloy Steel Welding Elec trodes,Section III

1571

03-03-73 (N-41)

01-08-79

01-21-82

01-21-85

1578

06-25-73 (N-43)

01-08-79

07-01-82

1583

06-25-73

03-21-77

15876

08-13-73

12-31-75

1590

08-13-73

03-21-77

1602-1

04-29-74

12-31-74 Additional Material for SA-234 Carbon Steel Fittings,Section III

SB-167 Nickel-Chromium-Iron (Alloy 600) Pipe or Tube, Sec ion III

Use of 80-40 Carbon Steel Castings,Section III

SA-508 Class 3 Forgings with

0.4/1.0 Ni for Section III and VIII, Division 2 Construction Chemical Analysis Variations,Section III Construction Use of SB-42 Alloy 122, SB-111 Alloys 122, 715 and

706, SB-171 Alloys 715 and

706 and SB-466 Alloys 706 and 715,Section III, Class 2 and 3 Components

1603

12-17-73 Toughness Tests When Cross

07-01-74 Section Limits Orientation and Location of Specimens

1.85-6

Cr-Ni-Mo-V Bolting Material for Section III, Class 1 Compo nents

1608-1

12-17-73 Use of ASME SB-265,

03-21-77 SB-337, SB-338, SB-348, and SB-381, Grades 1, 2, 3, and 7 Unalloyed Titanium and ASTM B-363 Titanium Weld ing Fittings,Section III, Class

2 and 3 Components

1612

12-17-73 Use of Type 308 Stainless Steel (N-56)

07-01-78 Rod and Bar for Section III,

Class 1, 2, 3, and CS Construc tion

1613

12-17-73

01-01-78

1615

12-17-73

01-01-78

16166

12-17-73

07-01-75 Use of SA-372 Class IV Forg ings,Section III Construction Use of A587-73,Section III,

Class 3 Construction Ultrasonic Examination of Seamless Austenitic Steel Pipe,Section III, Class 1 Construc tion

16226

03-02-74 PWHT of Repair Welds in Car

01-01-76 bon Steel Castings,Section III,

Class 1, 2, and 3

1625

03-02-74

12-31-74

1626-1

01-08-79 (N-65-1) 01-21-82

01-21-85

1634-2

08-13-76 (N-68)

07-01-78

16378

04-29-74

01-01-75

16456

08-12-74

01-01-76 Repair of Section III Class 2 and 3 Tanks Normalized and Tempered

1-1/4 Cr Low Alloy Steel Forg ings,Section I and Section III

Use of SB-359 for Section III,

Division 1, Class 3 Construc tion Effective Date for Compliance with NA-3700 of Section III

Use of DeLong Diagram for Calculating the Delta Ferrite Content of Welds in Section III, Class 1, 2, and CS

Construction

1648

08-12-74 SA-537 Plates for Section III,

07-01-76 Class 1, 2, 3, and MC Compo nents

16496

08-12-74 Modified SA 453-GR 660 for

01-01-76 Class 1, 2, 3, and CS Construc tion

8Code Case 1637 was accepted only on a case-by-case basis.

1605

11-05-73

11-20-78

03-17-80

1698 (N-92)

06-30-757

11-20-78

07-13-81 Waiver of Ultrasonic Transfer Method,Section III, V, and VIII, Division 1 Code Case 1698 was acceptable subject to the fol lowing conditions in addition to those specified in the Code Case: The material from which the basic calibra tion block is fabricated should be of the same product form, alloy, and heat treatment as the material being ex amined. Alloys of equivalent P-number grouping may be used for the fabrication of calibration blocks if ad justments to signal height can be made to compensate for sound beam attenuation difference between the cal ibration block and the material under examination by following the transfer method procedure of T-535.1(d),

Article 5,Section V, ASME B&PV Code, 1977 edition.

1713

08-11-75 Small Material Items, Section

12-31-75 III, Division 1, Class 1, 2, 3, CS and MC

1714-2

08-28-78 (N-102-2) 07-13-81

06-30-84

1722-1

01-08-79 (N-107-1) 01-08-82 Postweld Heat Treatment of P-1 Material,Section III,

Class MC

Vacuum, Carbon Deoxidized SA-508 Forgings,Section III,

Division 1

1.85-7

1650

08-12-74 Use of SA-414 Grade C for

12-31-74 Class 2 and 3 Components,Section III, Division 1

1664

11-04-74 Use of Cr-Ni-Fe-Mo-Cu-Cb

03-21-77 Stabilized Alloy Cb-3 for Sec tion III Class 2 and 3 Construc tion

1666

11-04-74 Use of SB-12, Alloy 122 for

07-01-75 Class 2 and 3 Construction

1682-1

08-11-75 Alternate Rules for Material

12-31-75 Manufacturers and Suppliers,Section III, Subarticle NA-3700

16846

03-03-75 A637 Grade 718 for Bolting

01-01-76 Class 1 and 2 Construction

16906

04-28-75 Stock Materials for Section III

01-01-77 Construction,Section III, Divi sion 1

1691

04-28-75 Ultrasonic Examination in Lieu

01-01-78 of Radiography of Repair Welds for Vessels,Section III,

Class 1

1747 (N-124)

1748 (N-125)

1754 (N-126)

1755-1 (N-127)

03-01-76

01-08-79

07-13-81

07-13-84

07-13-87 Requirements for Martensitic Stainless Steel Forgings with

13% Chromium and 4% Nick el,Section III, Division 1

03-01-76 Low Carbon Austenitic Stain

07-01-78 less Steel Pipe Welded With Filler Metal,Section III, Divi sion 1, Construction

01-14-77

01-07-80

12-13-82

02-20-86

12-07-87

07-01-88

01-14-77

01-07-80

02-14-83

02-20-86

02-20-89

02-20-92 Hard Surfacing by the Spray Fuse Method,Section III,

Class 1, 2, and 3 Construction Alternative Rules for Examina tion of Welds in Piping, Sec tion III, Class 1 and 2 Construction

1724

11-03-75 Deviation from the Specified (N-108)

07-01-78 Silicon Ranges in ASME Ma terial Specifications,Section III, Division 1, and VIII, Divi sion 1 and 2

1728

11-03-75 Steel Structural Shapes and

07-01-77 Small Material Products for Component Supports,Section III, Division 1 Construction

1740

12-22-75 Weld Metal Test,Section III,

07-01-76 Class 1, 2, 3, MC and CS

1741-1

01-14-77 Interim Rules for the Required

01-01-78 Number of Impact Tests for Rolled Shapes,Section III, Di vision 1, Subsection NF, Com ponent Supports

1742

03-01-76 Use of SB-75 Annealed Copper

07-01-76 Alloy 122,Section III, Divi sion 1, Class 2 Construction

1743

03-01-76 Use of SB-98 Cu-SiB Rod

07-01-76 CDA651 Section III, Division

1, Class 2 Components

1746

03-01-76 Leak Testing of Seal Welds, (N-123)

03-01-79 Section III, Division 1, Class 1,

2, and 3 Construction

1770

(N-139)

08-13-76 Testing of Electroslag Wire and

01-01-79 Flux for Class 1, 2, 3, MC, and CS Construction,Section III,

Division 1

1772

08-13-76 (N-140)

08-30-79

07-16-82

12-31-85

1773

08-13-76

07-01-77 Use of SA-453 Bolts in Service Below 800'F Without Stress Rupture Tests,Section III,

Division 1 Use of Other Product Forms of Materials for Valves,Section III, Division 1

1777

08-13-76 Use of SA-106, Grade C in

07-01-77 Class MC Construction, Sec tion III, Division 1

1781 (N-147)

1E

09-10-76 Use of Modified SA-487 Grade

07-01-78 CA6NM,Section III, Division

1, Class 1, 2, 3, MC or CS

1782

09-10-76 (N-148)

08-30-79

07-16-82

06-30-83

1787

09-10-76

01-01-78

1793 (N-156)

1794 (N-157)

1795 (N-158)

01-14-77

01-07-80

02-14-83

02-14-86

01-14-77

01-07-80

01-07-83

01-14-77

07-01-78 Use of Copper-Nickel Alloy

962 for Castings,Section III,

Division 1, Class 3 Construction Depth of Weld Repairs for Forgings,Section III, Division

1, Class 1, 2, 3, MC and CS

Construction Structural Steel Rolled Shapes,Section III, Division 1, Class 2,

3, and MC

Use of Seamless Al-Br, Alloy CDA 614 Pipe,Section III,

Division 1, Class 3 Examination of Weld Repairs in Forgings,Section III, Divi sion 1, Class 1, 2, 3, MC and CS

1.85-8

1760

04-26-76 Maximum Dimensions for Iso

01-01-78 lated Pores in Welds--Class 1 Components,Section III, Divi sion 1

1766

04-26-76 Testing Requirements for

07-01-77 Welding Materials, Class 1, 2,

3, MC and CS Construction,Section III, Division 1

1767

04-26-76 Examination of Tubular Prod

01-01-77 ucts Without Filler Metal Class 1 Construction,Section III, Division 1

1798

01-14-77 Use of ASTM A352-75,

01-01-78 Grades LCA and LCC,Section III, Division 1, Class 1, 2, and

3

1810

03-03-77 Testing Lots of Carbon Steel

03-03-80 Solid, Bare Welding Electrode or Wire,Section III, Division

1, Class 1, 2, 3, MC, and CS

18199

03-23-77 Use of Type XM-19 for

01-01-78 Construction,Section III, Divi sion 1, Class 1, 2, 3

1819-110,11 03-23-77 (N-176-1) 03-23-80

08-25-80

08-25-83

1820

(N-177)

03-23-77

03-17-80

02-14-83

.01-01-84 Use of Type XM-19 for Construction,Section III,

Division 1, Class 1, 2, and 3 Alternative Ultrasonic Examination Technique,Section III, Division 1 N-178

05-25-77 Use of ASTM B271, CDA

01-01-80

954, Alloy 9C for Class 3 Construction,Section III, Divi sion 1 N-180

07-11-77 Examination of Springs for

07-01-78 Class 1 Component Standard Supports,Section III,

Division 1 N-181

07-11-77 Steel Castings Refined by the

07-11-80

Argon Decarburization Pro cess,Section III, Division 1, Construction N-183

07-11-77 Use of Modified SA-182 Grade

01-01-80

F22 for Section III, Division 1, Class 1, 2 and 3 Construction N-190

08-29-77 Use of SA-455 for Class 3

07-01-78 Components,Section III, Divi sion 1 N-204

03-20-78 Use of Modified SA-508, Class

01-01-81

3, and SA-541, Class 3 for Sec tion III, Division 1, Class 1, 2, and 3 Construction N-206

03-20-78

03-16-81

06-30-83 N-207-1 03-19-79

01-21-82

01-21-85 Use of ASTM B151-75 Copper-Nickel Alloy 706 Rod and Bar for Section III,

Division 1, Class 3 Construc tion Use of Modified SA-479 Type XM-19 for Section III, Divi sion 1, Class 1, 2, 3, or CS

Construction N-223

11-30-78 Requirements for Stainless

11-20-81 Steel Precipitation Hardening,Section III, Division 1, Class MC

N-224-1 05-11-81

04-05-84

04-05-87

04-05-90

Use of ASTM A500 Grade B

and ASTM A501 Structural Tubing for Welded Attach ments for Section III,

Class 2, 3, and MC

N-225

11-20-78 Certification and Identification

01-01-81 of Material for Component Supports,Section III, Division

1 N-227

07-09-79 Examination of Repair Welds,

07-09-82 Section III, Class 2 and 3 Tanks N-242-1

04-10-80

05-06-83

06-30-84 Materials Certification,Section III, Division 1, Classes 1, 2, 3, MC, and CS Construction Code Case N-242-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Applicants should identify in their Safety Analysis Reports the components and sup ports for which the Code Case is being applied and should specify the respective paragraphs of the Code Case.

9This Code Case was reaffirmed as Case 1819-1. See Regulatory Position

2, Case 1819-1, for the effective dates.

10Case 1819 (N-176) was annulled December 31,1977. However, itwas later reaffirmed to continue providing rules pertaining to external pres sure charts.

llCode Case N-176-1: The 3-23-80 is an annulment date. This Casewas allowed to expire on 3-23-80 because of an administrative error. It was reinstated on 8-25-80 with no technical changes. It is, therefore, con sidered to be in effect during that lapse in time. The 8-25-83 is the man datory annulment date. The Case did not appear in Revisions 18-21 of this guide because of the ASME administrative error.

N-245

07-09-79

07-16-82

07-17-85 Use of ASTM B61-76 and B62-76 Copper Alloy Castings for Section III, Division 1, Class 3 Construction N-246

07-09-79 Use of SB-169, Alloy CA 614,

09-07-82 Section III, Division 1, Class 3 N-248

08-30-79 Alternative Reference Radio

07-01-80 graphs,Section III, Division 1, Classes 1, 2, 3, MC, and CS

Construction

1.85-9

N-259

01-07-80 Ni-Cu-Al Bolting Material SB

02-14-83

164 Modified,Section III,

01-01-84 Division 1, Class 3 N-26512

01-07-80 Modified SA-487 Castings,

09-01-83 Section III, Division 1, Class 1

12-31-84

05-19-85 N-267

01-07-80

Double-Wall Radiography,

07-01-81 Section III, Division 1, Class 1 and 2 N-274

03-17-80

09-07-82

06-30-86 Alternative Rules for Examina tion of Weld Repairs for Section III, Division 1 Construction Code Case N-274 was acceptable subject to the fol lowing condition 13 in addition to those conditions spe cified in the Code Case. Paragraph 6 should be expand ed as follows: The ultrasonic examination procedures shall be proven by actual demonstration, to the satisfac tion of the Authorized Nuclear Inspector, that the pro cedures are capable of detecting unacceptable cracks according to Section XI requirements.

N-277

03-17-80

Use of Type XM-19 Austenitic

09-17-80 Stainless Steel for Section III,

Division 1, Class MC

Construction N-295

01-15-81

12-11-81

06-30-82 NCA-1140, Materials,Section III, Division 1 N-296

11-17-80

Welding Material,Section III,

12-01-83 Division 1 Construction N-298

11-17-80

Examination of Component

12-01-83 Supports,Section III, Division

1, Class 1, 2, 3, and MC

N-299-1

07-18-85

02-23-87 Use of Nickel-Chromium Molybdenum-Columbium Alloy 625 Forgings,Section III, Division 1, Class 2 and Class 3 Components

12Code Case N-265 was allowed to expire on 1-7-83 because of an ad ministrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on

5-19-85. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ef fect during the period of 12-31-84 through 5-19-85.

13The reason for the conditional acceptance of paragraph 6 is to make cer tain that there is a qualified ultrasonic testing procedure capable of de tecting small flaws and differentiating the small flaws from geometric reflectors. This paragraph does not in any way alter the acceptance cri teria as specified in paragraph 3.

N-310-1 08-14-81 Certification of Bolting Materi

07-01-82 als,Section III, Division 1, Class 1, 2, 3, MC and CS

Code Case N-310-1 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: Each applicant who applies the Code Case should indicate in the referencing Safety Analysis Report (1) in what way the bolting does not meet NCA-3800 (or NA-3700), (2) where the bolting will be used in the plant, and (3) how it will be shown that the bolting material properties required by the Equipment Support Design Specification are present in the actual bolting material.

N-317

07-13-81 ASTM A276 Bar Section III,

07-01-82 Division 1 N-321-1

12-05-85 Use of Modified SA-249,

12-05-88 Grade TP 304,Section III, Di vision 1, Class 1 N-337-1

07-18-85 Use of ASTM B525-70 Grade

07-18-88

11, Type II, Sintered Austentic

03-14-91 Stainless Steel for Class 2, 3,

03-14-94 and MC Component Standard Supports,Section III, Divi sion 1 N-342

04-02-82 Use of SA-249 and SA-312

04-02-85 Type 317 Stainless Steel, Sec tion III, Division 1, Classes 1,

2, and 3 N-348

09-09-82 Use of SA-574 Socket Head

09-07-8514 Cap Screws,Section III, Divi sion 1 Code Case N-348 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants should justify in their Safety Analysis Reports why use of these socket head cap screws will not result in early failure from stress corrosion cracking.

N-348-1

09-07-8514 Use of SA-574 Socket Head

02-20-86 Cap Screws,Section III, Divi

02-20-89 sion 1 Code Case N-348-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Applicants should justify in their Safety Analysis Reports why use of these socket head cap screws will not result in early failure from stress corrosion cracking.

14Code Case N-348 was annulled on 9-7-85. It was reinstated as N-348-1 on 2-20-86. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that the Code Case was in effect during the period 9-7-85 through 2-20-86.

1.85-10

N-348-2 08-14-90 Use of SA-574 Socket Head

08-14-93 Cap Screws,Section III, Divi sion 1 Code Case N-348-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Applicants should justify in their Safety Analysis Reports why use of these socket head cap screws will not result in early failure from stress corrosion cracking.

N-352-1 07-18-85 Use of SA-638 Grade 660

06-30-86 Forgings and Bars Below

700'F Without Stress Rupture Tests,Section III, Division 1 N-353

07-16-82

05-19-85

09-05-88 N-367

02-14-83

02-19-86

02-19-89 Marking of SA-354 Grade BD

Bolting,Section III, Division 1 SA-372 Type V, Grade 1, Class B,Section III, Division 1 N-371-1 07-18-85

12CR-1W-1Mo-1/4V Marten

07-18-88 sitic Stainless Steel Valve In ternals,Section III, Division 1 N-372

02-14-83 SB-163 Ni-Fe-Cr-Mo-Cu Alloy

12-31-83

825 (UNS N08825) Tubing,Section III, Division 1 N-378

10-28-83 Examination of Piping Support

10-28-8615 Material,Section III, Division

1, Class 1 N-379-1 07-18-85

07-18-88

03-14-91

07-18-91 N-388

07-25-83

07-30-86

02-23-87 Bimetallic Tubing Section III,

Division 1, Class 1 Component Support Bolting,Section III, Division 1, Classes

2, 3, and MC

N-398

02-20-84 Reporting of Charpy-V Notch

02-20-87 Test Results,Section III, Divi sion 1 Code Case N-398 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The Code Case is not acceptable to steam generator or reactor coolant pump supports.

Applicants wishing to use this Code Case should indi cate in the Safety Analysis Report the component sup ports to which the case is applied for review on a case by-case basis.

15The annulment date of 12-31-84 that was listed in Revisions 24 and 25 was in error. The annulment date should be 10-28-86.

N-459

05-04-88

03-14-91

03-14-94 SA-508 Basic Oxygen-Ladle Furnace Process for Code Construction,Section III, Divi sion 1 N-470

03-08-89 Class MC Material Require

03-08-92 ments [NE-2121(c)],Section III, Division 1 N-475

12-11-89 Materials in Inventory, Section

12-11-92 III, Division 1 N-482

03-05-90 Direct Quenched Stainless Bar,

03-05-93 ASTM A 479-88b,Section III,

Division 1 N-501

07-27-92 Alternative Rules to

12-31-93 NCA-3800, 1990 Addenda Section III, Division 1

3. REVISED CODE CASES

Code Cases that were endorsed by the NRC in a prior version of this guide and were superseded by re vised 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, 16 and title. 17

1332-6

03-09-72 Requirements for Steel Forg

01-08-79 ings,Section III and VIII, Divi sion 2

1335-9

04-29-74

08-28-78

1337-9

04-29-74

04-28-75

1337-10 04-28-75

05-15-78

1344-5

04-29-74 (N-5)

01-08-79

01-21-82

12-13-82 Requirements for Bolting Materials Special Type 403 Modified Forgings or Bars,Section III

Special Type 403 Modified Forgings or Bars,Section III

Nickel-Chromium, Age-Har denable Alloys (Alloy X750),

Section III

1358-5

11-03-75 High Yield Strength Steel, Sec (N-7)

01-08-79 tion III, Division 1, Class 1

01-21-82 Vessels

12-13-82 Code Case 1358-5 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

16Earlier date-date Code Case was approved by ASME; later date---date revision of Code Case was approved by ASME.

17Code Cases 1334-2, 1337-7, 1344-3, 1484, 1521, and 1542, which were listed in the original issue of this guide, were revised by the ASME

prior to July 1, 1974.

1.85-11

1395-3

11-06-72 SA-508, Class 2 Forgings with

01-08-79 Modified Manganese Content,Section III or Section VIII, Di vision 2

1407-2

06-26-72 Time of Examination for Class

07-01-74

1, 2, and 3,Section III Vessels

1414-3

11-03-75 High Yield Strength Cr-Mo

03-01-76 Steel for Section III, Division

1, Class 1 Vessels Code Case 1414-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

1414-4

03-01-76 High Yield Strength Cr-Mo

08-09-77 Steel for Section III, Division

1, Class 1 Vessels Code Case 1414-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The information required to be developed by Note 1 in the Code Case should be pro vided in each referencing Safety Analysis Report.

1484-1

04-29-74 SB-163 Nickel-Chromium-Iron

11-04-74 Tubing (Alloy 600) at a Speci fied Minimum Yield Strength of 40.0 Ksi,Section III, Class 1

1484-2

11-04-74 SB-163 Nickel-Chromium-Iron

08-13-76 Tubing (Alloy 600 and 690) at a Specified Minimum Yield Strength of 40.0 Ksi,Section III, Class 1

1484-3 (N-20)

08-13-76

08-30-79

07-16-82

05-19-85

09-05-85 SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690)

and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0

Ksi,Section III, Division 1, Class 1 N-20-1

09-05-85 SB-163 Nickel-Chromium-Iron

12-07-87 Tubing (Alloy 600 and 690)

and Nickel-Iron-Chromium Alloy 800 at a Specified Mini mum Yield Strength of 40.0

Ksi,Section III, Division 1, Class 1 N-20-2

12-07-87 SB-163 Nickel-Chromium-Iron

11-30-88 Tubing (Alloy 600 and 690)

and Nickel-Iron-Chromium Alloy 800 at a Specified Mini- mum Yield Strength of 40.0

Ksi, and Cold Worked Alloy

800 at a Yield Strength of 47.0

Ksi,Section III, Division 1, Class 1

149218

10-29-71 Post Weld Heat Treatment,

03-03-75 Section I, III and VIII, Division

1 and 2

1557-2

12-17-73 Steel Products Refined by Sec

01-08-79 ondary Remelting

1618

03-02-74 Material for Core Support

03-03-75 StructuresSection III, Subsec tion NG

Code Case 1618 was acceptable subject to the fol lowing conditions in addition to those specified in the Code Case: a. Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition.

b. Use of alloy ASTM A-564 Grade 631 is not accept able on a generic basis.

1618-1

03-03-75 Material for Core Support

03-01-76 Structures,Section III, Subsec tion NG

Code Case 1618-1 was acceptable subject to the following condition in addition to those specified in the Code Case: Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition.

1618-2 (N-60)

03-01-76 Material for Core Support

01-08-79 StructuresSection III, Division

01-21-82

1, Subsection NG

05-25-83 Code Case 1618-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution treated condition.

N-60-1

05-25-83 Material for Core Support

09-17-84 Structures,Section III, Divi sion 1 Code Case N-60-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution treated condition.

18Code Case 1492 is no longer listed by ASME as a Section III Code Case and is therefore deleted from the acceptable listing

1.85-12 L

N-60-2

09-17-84 Material for Core Support

09-05-85 Structures,Section III, Divi sion 1 Code Case N-60-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution treated condition. For SA-479 material, the maximum yield strength should not exceed 90,000 psi in view of the susceptibility of this material to environmental cracking.

N-60-3

09-05-85 Material for Core Support

07-27-88 Structures,Section III, Divi

05-13-91 sion 1 Code Case N-60-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution treated condition. For SA-479 material, the maximum yield strength should not exceed 90,000 psi in view of the susceptibility of this material to environmental cracking.

N-60-4

05-13-91 Material for Core Support

02-15-94 Structures,Section III, Divi sion 1 Code Case N-60-4 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution treated condition. The maximum yield strength of strain-hardened austenitic stainless steel should not ex ceed 90,000 psi in view of the susceptibility of this ma terial to environmental cracking.

1626

03-02-74 Normalized and Tempered

01-08-79

1-1/4 Cr Low Alloy Steel Forg ings, Section 1,Section III, and Section VIII, Division 1 and 2

1634

07-01-74 Use of SB-359 for Section III,

08-12-74 Class 3 Construction

1634-1

08-12-74 Use of SB-359 for Section III,

08-13-76 Class 3 Construction

1644

08-12-74 Additional Materials for Com

04-28-75 ponent SupportsSection III,

Subsection NF, Class 1, 2, 3, and MC Construction Code Case 1644 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: The maximum measured ulti mate tensile strength of the component support material should not exceed 170 Ksi.

1644-1

04-28-75 Additional Materials for Com

06-30-75 ponent Support-Section III,

Subsection NF, Class 1, 2, 3, and MC Construction Code Case 1644-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.

1644-2

06-30-75 Additional Materials for Com

11-03-75 ponent Supports-Section III,

Subsection NF, Class 1, 2, 3 and MC Construction Code Case 1644-2 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.

1644-3

11-03-75 Additional Materials for Com

03-01-76 ponent Supports--Section III,

Subsection NF, Class 1, 2, 3 and MC Construction Code Case 1644-3 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength of the component support materi al should not exceed 170 Ksi.

1644-4

03-01-76 Additional Materials for Com

08-13-76 ponent Supports and Alternate Design Requirements for Bolted Joints,Section III, Divi sion 1, Subsection NF, Class 1,

2, 3 and MC Construction Code Case 1644-4 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile strength (UTS) of the component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. For these cases, it should be demonstrated by he applicant that (1) the impact test results for the material meet code requirements and (2) the material is not sub-

1.85-13

ject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

1644-5

08-13-76 Additional Materials for Com

03-03-77 ponent Supports and Alternate Design Requirements for Bolted Joints,Section III, Divi sion 1, Subsection NF, Class 1,

2, 3 and MC Construction Code Case 1644-5 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile strength (UTS) of the component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. For these cases, it should be demonstrated by the applicant that (1) the impact test results for the material meet code requirements and (2) the material is not sub ject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

1644-6

03-03-77 Additional Materials for Com

11-21-77 ponent Supports and Alternate Design Requirements for Bolted Joints,Section III, Divi sion 1, Subsection NF, Class 1,

2, 3 and MC Construction Code Case 1644-6 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile strength (UTS) of the component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. For these cases, it should be demonstrated by the applicant that (1) the impact test results for the material meet code requirements and (2) the material is not sub j ect to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

1644-7

11-21-77 Additional Materials for Com (N-71-7) 05-15-78 ponent Supports,Section III,

Division 1, Subsection NF,

Class 1, 2, 3 and MC Compo nent Supports Code Case 1644-7 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile strength (UTS) of the component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. For these cases, it should be demonstrated by the applicant that (1) the impact test results for the material meet code requirements and (2) the material is not sub ject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

1644-8

05-15-78 Additional Materials for Com (N-71-8) 01-07-80 ponent Supports,Section III,

Division 1, Subsection NF,

Class 1, 2, 3 and MC Compon ent Supports Code Case 1644-8 was acceptable subject to the following conditions in addition to those specified in the Code Case: The maximum measured ultimate ten sile strength (UTS) of the component support material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress cor rosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be considered accept able for a material and, under this condition, the Design Specification should specify impact testing for the ma terial. For these cases, it should be demonstrated by the applicant that (1) the impact test results for the material meet code requirements and (2) the material is not sub ject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

1.85-14 I

1644-9

01-07-80

Additional Materials for Com (N-71-9) 05-11-81 ponent Supports Fabricated by Welding,Section III, Division

1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case 1644-9 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: In the last sentence of para graph 5.3, reference should be made to paragraph

4.5.2.2, "Alternate Atmosphere Exposure Time Peri ods Established by Test," of the AWS D. 1.1 Code for the evidence presented to and accepted by the Autho rized Inspector concerning exposure of electrodes for longer periods of time.

N-71-10 05-11-81

06-17-82 Additional Materials for Com ponent Supports Fabricated by Welding,Section III, Division

1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case N-71-10 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults for the material meet code requirements and (2)

the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the ma terial has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service. In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time.

N-71-11

06-17-82

02-14-83 Additional Materials for Com ponent Supports Fabricated by Welding,Section III, Division

1, Subsection NF, Class 1, 2, 3, and MC Component Supports Code Case N-71-11 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults for the material meet code requirements and (2)

the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the ma terial has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service. In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time.

N-71-12 02-14-83 Additional Materials for Comi

02-20-84 ponent Supports Fabricated by Welding,Section III, Division

1, Class 1, 2, 3, and MC

Code Case N-71-12 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the materi al has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service. In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time. The provisions of paragraph 4.3 are not accept able on a generic basis. Paragraph 16.2.2 is not accept-

1.85-15

able as written and should be replaced with the follow ing: When not exempted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710 Grade A materi al it shall be at least 1000'F (540'C) and shall not exceed 1150'F (6200C) for Class 1 and Class 2 mate rial and 1175°F (640'C) for Class 3 material. The new holding time at temperature for weld thickness (nomi nal) shall be 30 minutes for 1/2 inch or less, I hour per inch for thickness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 minutes for each additional inch over 5 inches.

N-71-13

02-20-84 Additional Materials for Sub

12-05-85 section NF, Classes 1, 2, 3 and MC Component Supports Fab ricated by Welding,Section III,

Division 1 Code Case N-71-13 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that (a) a corrosive environment is not present and (b) the component that contains the mate rial has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service. In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time. Paragraph 16.2.2 is not acceptable as written and should be replaced with the following: When not ex empted by 16.2.1 above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710 Grade A material, it shall be at least 1000'F (540'C) and shall not exceed 1150'F

(6200C) for Class 1 and Class 2 material and 1175°F

(6400C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30

minutes for 1/2 inch or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thick ness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap- ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes

1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.

N-71-14

12-05-85 Additional Materials for Sub

12-16-86 section NF, Classes 1, 2, 3 and MC Component Supports Fab ricated by Welding,Section III,

Division 1 Code Case N-71-14 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: The maximum measured ulti mate tensile strength (UTS) of the component support material should not exceed 170 Ksi in view of the sus ceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may ex ist where a UTS value of up to 190 Ksi could be consid ered acceptable for a material and, under this condition, the Design Specification should specify impact testing for the material. For these cases, it should be demon strated by the applicant that (1) the impact test results for the material meet code requirements and (2) the ma terial is not subject to stress corrosion cracking by vir tue of the fact that(a) a corrosive environment is not present and (b) the component that contains the materi al has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service. In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time. Paragraph 16.2.2 is not acceptable as written and should be replaced with the following: When not ex empted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710 Grade A material, it shall be at least 1000'F (540'C) and shall not exceed 1150'F

(620'C) for Class 1 and Class 2 material and 1175"F

(640'C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30

minutes for 1/2 inch or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thick ness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes

1, 2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan-

1.85-16

dard Review Plan (NUREG-0800) or on a case-by-case basis.

N-71-15

12-16-86 Additional Materials for Sub

12-16-89 section NF, Classes 1, 2 3 and

02-12-93 MC Component Supports Fab ricated by Welding,Section III, Division 1 Code Case N-71-15 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The maximum measured ultimate tensile strength (UTS) of the component sup port material should not exceed 170 Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion cracking. Certain applications may exist where a UTS value of up to 190 Ksi could be con sidered acceptable for a material and, under this condi tion, the Design Specification should specify impact testing for the material. For these cases, it should be de monstrated by the applicant that (1) the impact test re sults for the material meet code requirements and (2)

the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the ma terial has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service. In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2, "Alter nate Atmosphere Exposure Time Periods Established by Test," of the AWS D.1.1 Code for evidence pres ented to and accepted by the Authorized Inspector con cerning exposure of electrodes for longer periods of time. Paragraph 16.2.2 is not acceptable as written and should be replaced with the following: When not ex empted by 16.2.1, above, the postweld heat treatment shall be performed in accordance with NF-4622 except that for ASTM A-710 Grade A material, it shall be at least 1000'F (540'C) and shall not exceed 1150'F

(620'C) for Class 1 and Class 2 material and 1175°F

(640'C) for Class 3 material. The new holding time at temperature for weld thickness (nominal) shall be 30

minutes for 1/2 inch or less, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per inch for thick ness over 1/2 inch to 5 inches, and 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> plus 15 min utes for each additional inch over 5 inches. The fracture toughness requirements as listed in this Code Case ap ply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture toughness of Classes

1,2, and 3 component supports shall be characterized in accordance with paragraph 5.3.4 of the USNRC Stan dard Review Plan (NUREG-0800) or on a case-by-case basis.

1682

01-29-75 Alternate Rules for Material

08-11-75 Manufacturers and Suppliers,Section III, Subarticle NA-3700

1714

08-11-75 Postweld Heat Treatment of

07-11-777 P-1 Material,Section III, Class MC

1714-1

07-11-777 (N-102-1) 08-28-78 Postweld Heat Treatment of P-1 Material,Section III, Class MC 1722

11-03-75 Vacuum, Carbon Deoxidized

01-08-79 SA-508 Forgings,Section III,

Division 1, and VIII, Division

1 and 2

1741

12-22-75 Interim Rules for the Required

01-14-77 Number of Impact Tests for Rolled Shapes,Section III, Di vision 1, Subsection NF, Com ponent Supports

1755

04-26-76 Alternative Rules for Examina

01-14-77 tion of Welds in Piping, Class

1 and 2 Construction,Section III, Division 1

1759

08-13-76 Material for Internal Pressure

05-15-78 Retaining Items for Pressure Relief Valves,Section III, Di vision 1, Class 1, 2, and 3 Code Case 1759 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants using this Case should also use Code Case 1711 for the design of pres sure relief valves.

N-188

08-29-77 Use of Welded Ni-Fe-Cr-Mo-Cu

05-15-78 (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625) Tubing,Section III, Division 1, Class 3 N-207

03-20-78 Use of Modified SA-479 Type

03-19-79 XM-19 for Section 1II, Divi sion 1, Class 1, 2, or 3 Construction N-224

11-20-78 Use of ASTM AO00 Grade B

05-11-81 and ASTM A501 Structural Tubing for Welded Attach ments for Section III, Class 2 and 3 Construction N-242

04-12-79 Materials Certification, Section

04-10-80

III, Division 1, Classes 1, 2, 3, MC, and CS Construction

1.85-17

Code Case N-242 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants should identify the components and supports requiring the use of para graphs 1.0 through 4.0 of the Code Case in their Safety Analysis Reports.

N-246-1 09-07-82 SB-169, Alloy C 61400, Sec

05-25-83 tion III, Division 1, Class 3 N-249

01-07-80 Additional Materials for Com

05-11-81 ponent Supports Fabricated Without Welding,Section III,

Division 1, Subsection NF,

Class 1, 2, 3, and MC Compo nent Supports Code Case N-249 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Footnote 2 of the Code Case should apply to all materials listed in Tables 1, 2, 3, 4, and 5 of the Code Case and should be so indicated on line 5 of the "Reply."

N-249-1 05-11-81

06-17-82 Additional Materials for Com ponent Supports Fabricated Without Welding,Section III,

Division 1, Subsection NF,

Class 1, 2, 3, and MC Compo nent Supports Code Case N-249-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Paragraph 7 of the "Reply"

should reference the requirements of NF-2600 instead of NF-2800. This is a typographical error in that NF-2800 does not exist.

N-249-2 06-17-82 Additional Materials for Sub

02-14-83 section NF Class 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 N-249-3

02-14-83

02-20-84 N-249-4 02-20-84

09-17-84 Additional Materials for Sub section NF Class 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Additional Material for Sub section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 The fracture toughness requirements as listed in Code Case N-249-4 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The frac- ture toughness of Classes 1, 2, and 3 component sup ports should be characterized in accordance with para graph 5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis.

N-249-5 09-17-84 Additional Material for Sub

04-08-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 The fracture toughness requirements as listed in Code Case N-249-5 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The frac ture toughness of Classes 1, 2, and 3 component sup ports should be characterized in accordance with para graph 5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis.

N-249-6 04-08-85 Additional Material for Sub

09-05-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-6 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

N-249-7

09-05-85 Additional Material for Sub

12-05-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-7 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG-

1.85-18

0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

N-249-8 12-05-85 Additional Material for Sub

12-16-86 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-8 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

N-249-9

12-16-86 Additional Material for Sub

05-06-89 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-9 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro- sion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

N-249-10 05-06-89 Additional Material for Sub

05-13-91 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-10 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (5) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

N-249-11 05-13-91 Additional Material for Sub

02-12-93 section NF, Classes 1, 2, 3 and MC Component Supports fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-11 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, it should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

1.85-19

N-249-12 02-12-93 Additional Material for Sub

05-11-94 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Code Case N-249-12 was acceptable subject to the following conditions in addition to those conditions specified in the Code Case: the fracture toughness re quirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with paragraph

5.3.4 of the USNRC Standard Review Plan (NUREG 0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, is should be demonstrated by the owner that (1) the im pact test results for the material meet Code require ments and (2) the material is not subject to stress corro sion cracking by virtue of the fact that (a) a corrosive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service.

N-26519 01-07-80

09-01-83

12-31-84

05-19-85 N-299

11-17-80

11-28-83

07-18-85 N-321

07-13-81

07-13-84

12-05-85 N-337

04-02-82

05-19-85

07-18-85 Modified SA-487 Castings,Section III, Division 1, Class 1 Use of Nickel-Chromium Molybdenum-Columbium Alloy 625 Forgings,Section III, Division 1, Class 2 and Class 3 Components Use of Modified SA-249, Type

304 for Section III, Division 1, Class 1 Construction Use of ASTM B525-70 Grade II, Type II, Sintered Austenitic Stainless Steel for Class 2, 3, and MC Component Standard Supports,Section III,

Division 1 N-352

07-16-82

05-19-85

07-18-85 Use of SA-638 Grade 660

Forgings and Bars Below

7000 F Without Stress Rupture Tests,Section III, Division 1 N-370

02-14-83 Modified SA-705 Grade

07-18-85 XM-13 Forgings,Section III,

Division 1 N-370-1 07-18-85 Modified SA-705 Grade

12-05-85 XM-13 Forgings,Section III,

Division 1 N-371

02-14-83

12 Cr-1W-lMo-1/4V Marten

07-18-85 sitic Stainless Steel Valve In ternals,Section III, Division 1 N-379

04-04-83 Bimetallic Tubing Section III,

07-18-85 Division 1, Class 1 N-418

12-05-84 Use of Seamless Ni-Fe-Cr-Mo

07-30-86 Cu Low Carbon (UNS N08028 and UNS N08904) Tubing,Section III, Division 1, Classes

2 and 3 N-438

02-23-87 Fe-24.5Ni-21Cr-6.5 Mo-0.2N

03-08-89 (Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction,Section III, Division 1 N-438-1

03-08-89

03-05-90

Fe-24.5Ni-21Cr-6.5Mo-0.2N

(Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction,Section III, Division 1 N-438-2 03-05-90

UNS N08367 Material, Sec

07-27-92 tion III, Division 1, Class 2 and

3 Construction N-441

02-23-87

12-11-89

11-25-92 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction,Section III,

Division 1

19Code Case N-265 was allowed to expire on 1-7-83 because of an ad ministrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on

5-19-85. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ef fect during the period of 12-31-84 through 5-19-85.

N-443

05-07-87 High Yield Strength Cr-Mo

03-08-89 Steel, Class 1 Components,Section III, Division 1 N-466

03-08-89 Modified 9Cr-iMo Material

04-30-90

Section III, Division 1, Classes

1, 2, and 3

1.85-20

L

N-474

05-06-89 Design Stress Intensities and

03-05-90 Yield Strength Values for Alloy

690 With a Minimum Yield Strength of 35 ksi, Class 1 Components,Section III, Divi sion 1 N-474-1 03-05-90

03-05-93

12-09-93 Design Stress Intensities and Yield Strength Values for UNS

N06690 With a Minimum Spe cified Yield Strength of 35 ksi, Class 1 Components,Section III, Division 1 N-492

12-03-90

Grade 9 Titanium Alloy, Sec

05-11-94 tion III, Division I, Class 1, 2, and 3 N-497

05-13-91 Use of Fe-Ni-Cr-Mo-N

12-09-93 (CN-3MN) Cast Materials,Section III, Division 1, Class 2 and 3 Construction

4. UNACCEPTABLE CODE CASES

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.

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 informa tion to applicants regarding the use of this regulatory guide.

1. Except for those Code Cases that have been an nulled by action of the ASME, the NRC staff has found the Code Cases listed in the final version of this regulatory guide under Regulatory Position 1 acceptable for appropriate use. Other Code Cases may be considered for use in accordance with foot note 6 of the Codes and Standards rule, 10 CFR

50.55a.

2. Components ordered to a specific version of a Code Case need not be changed because a subsequent re vision of the Code Case is listed as the approved version in this guide.

3. Components ordered to a Code Case that was pre viously approved for use need not be changed be cause the Code Case has been subsequently an nulled.

4. Code Cases on the approved list may be applied to components that were in the process of construc tion prior to the effective date of the Code Case within the limits specified in the Code Case and ap plicable regulations or recommended in other regu latory guides.

1.85-21

APPENDIX

NUMERICAL LISTING OF CODE CASES

N-4-11 (1337-11)

N-294 N-443-1 N-7-1 N-329 N-466-1 N-20-3 N-351 N-469 N-60-5 N-370-2 N-474-2 N-71-16 N-404 N-484-1 N-131-1 (1759-1)

N-418-1 N-492-1 N-188-1 N-438-3 N-497-1 N-205 N-439 N-502 N-246-2 N-440

N-510

N-249-13 N-441-1 N-525 N-265-1

1.85-22

VALUE/IMPACT STATEMENT

A draft value/impact statement was published with the draft of this guide when it was published for public comment (Task DG-1049, May 1997). No changes were necessary, so a separate value/impact statement for Regulatory Guide 1.85 has not been prepared. A copy of the draft value/impact statement is available for inspection or copying for a fee in the NRC's Public Document Room at 2120 L Street NW., Washington, DC, under Task DG-1049.

1.85-23