Regulatory Guide 1.85
| ML12298A132 | |
| Person / Time | |
|---|---|
| Issue date: | 10/31/1994 |
| From: | Office of Nuclear Regulatory Research |
| To: | |
| References | |
| RG-1.085, Rev 30 | |
| Download: ML12298A132 (21) | |
U.S. NUCLEAR REGULATORY COMMISSION
Revision 30
October 1994 REGULATORY GUIDE
OFFICE OF NUCLEAR REGULATORY RESEARCH
REGULATORY GUIDE 1.85 MATERIALS 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 Section III, "Nuclear Power Plant Components,"' of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code or equiva- lent 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 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- formed. Where generally recognized codes and stan- dards are used, Criterion 1 requires that they be iden-
1Copies may be obtained from the American Society of Me- chanical Engineers, United Engineering Center, 345 East 47th Street, New York, New York 10017.
tified and evaluated to determine their applicability, adequacy, and sufficiency and be supplemented or modified as necessary to ensure a quality product in keep- ing 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 pressuie 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 mate- rials 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 power plants.
This regulatory guide contains no information col- lection activities and, therefore, is not subject to the 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."'
Generally, the individual Code Cases that make up this USNRC REGULATORY GUIDES
Regulatory Guides are Issued to describe and make available to the public such information as methods acceptable to the NRC staff for Implement- ing specific parts of the Commission's regulations, techniques used by the staff in evaluating specific problems or postulated accidents, and data needed by the NRC staff In its review of applications for permits and licenses. Regulatory Guides are not substitutes for regulations, and com- pliance with them is not required. Methods and solutions different from those set out in the guides will be acceptable if they provide 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 appropriate, to accommodate comments and to reflect new Information or experience.
Written comments may be submitted to the Rules Review and Directives Branch, DFIPS, ADM, U.S. Nuclear Regulatory Commission, Washing- ton, DC 20555-0001.
The guides are Issued In the following ten broad divisions:
1. Power Reactors
2. Research and Test Reactors
3. Fuels and Materials Facilities
4. Environmental and Siting
5. Materials and Plant Protection
6. Products
7. Transportation
8. Occupational Health
9. Antitrust and Financial Review
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, Mail Stop SSOP, Washington, DC
20402-9328, 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.
document explain the intent of Code rules or pro- vide for alternative requirements under special circumstances.
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 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 July 28, 1992, 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.i.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 no conflicts with other 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
- Lines indicate substantive changes from Revision 29.
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. ACCEPTABLE, CODE CASES
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 nu- clear power plants. Their use is acceptable within the limitations stated in the "Inquiry" and "Reply" sec- tions of each individual Code Case, within the limita- tions 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) Code Cases involving plate:
I
N-7-1
12-13-82
02-20-86
02-20-89
02-05-92 High Yield Strength Steel,Section III, Division 1, Class 1 Vessels Code Case N-7-1 is acceptable subject to the fol- lowing condition in addition to those conditions specified in the Code Case: The information re- quired to be developed by Note 1 in the Code Case should be provided in each referencing Safety Analysis Report.
(2)
Code Cases involving pipe and tubes:
N-20-3
11-30-88 SB-163 Nickel-Chromium-
12-16-91 Iron Tubing (Alloy 600 andi
690)
and Nickel-Iron- Chromium Alloy
800 at a Specified Minimum 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 N-188-1
05-15-78 Use of Welded Ni-Fe-Cr-Mo-
07-13-81 Cu (Alloy 825) and Ni-Cr-
07-13-84 Mo-Cb (Alloy 625) Tubing,
07-13-87 Section III, Division 1, Class 2
08-14-90
and 3
2A numerical listing of the Code Cases appears in the appen- dix.
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
N-294
08-25-80
SB-148 Alloy 952 and 954,
05-25-83 and SB-62 Alloy 836 Fittings,
07-30-86 Section III, Division 1, Class 2
07-30-89 N-379-1
07-18-85 Bimetallic Tubing Section III,
07-18-88 Division 1, Class 1
03-14-91 N-404
04-05-84 Annealed Alloy UNS N06625
04-05-87 Over UNS N06600 Bimetallic
12-11-89 Tubing,Section III, Division
1, Class 1 Code Case N-404 is acceptable subject to the fol- lowing conditions in addition to those conditions specified in the Code Case: The outside layer of the bimetallic tubing should be limited to a mini- mum of 5 percent and to a maximum of 40 per- cent of the wall thickness. The tolerance on the outside layer of material should not exceed -0.000
to +0.007 inches of the specified design wall thick- ness.
N-418-1
07-30-86 Use of Seamless Ni-Fe-Cr-
07-30-89 Mo-Cu Low Carbon (UNS
N08028 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, Plate, Seamless and Welded Pipe, and Welded Tube, Class 2 and 3 Construction,Section III, Division 1 N-441
02-23-87 Use of 20Cr-18Ni-6Mo (Alloy
12-11-89 UNS S31254) Fittings, Class 2 and 3 Construction,Section III, Division 1 N-466-1
04-30-90
Modified 9Cr-IMo Material,Section III,
Division
1, Classes 1, 2, and 3 N-469
03-08-89 Martensitic Stainless Steel for
04-30-92 Class 1, 2, and 3 Compon- ents,Section III, Division 1 N-482
03-05-90
Direct Quenched Stainless Bar, ASTM A 479-88b, Sec- tion III, Division I
(4)
Code Cases involving general usage:
N-60-4
05-13-91 Material for Core Support Structures,Section III, Divi- sion 1 Code Case N-60-4 is acceptable subject to the fol- lowing condition in addition to those conditions specified in the Code Case: Welding of age-har- denable 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 stain- less steel should not exceed 90,000 psi in view of the susceptibility of this material to environmental cracking.
N-71-15
12-16-86 Additional Materials for Sub-
12-16-89 section NF, Classes 1, 2, 3 and MC Component Supports Fabricated by Welding, Sec- tion III, Division 1 Code Case N-71-15 is acceptable. subject to the following conditions in addition to those condi- tions specified in the Code Case: The maximum measured ultimate tensile 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 corro- sion 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 condition, the Design Specification should specify impact testing for the material. 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 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 material has es- sentially 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, "Alternate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of tim
e. Paragraph
16.2.2 is not acceptable as written and should be repiaced with the following: When not exempted by 16.2.1, above, the postweld heat treatment 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 (N-4-11)
07-13-81
07-13-84
07-13-87
08-14-90
N-370-2
12-05-85
12-05-88
12-16-91 Special Type 403 Modified Forgings or Bars,Section III,
Division 1, Class 1 and CS
Modified SA-705 Grade XM-13 Forgings,Section III,
Division 1
1.85-3
shall be performed in accordance with NF-4622 except that for ASTM A-7 10 Grade A material, it shall be at least 1000°F (540 'C) and shall not ex- ceed 1150°F (620'C) for Class 1 and Class 2 ma- terial 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 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. The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture tough- ness of Classes 1, 2, and 3 component supports shall 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.
1759-1
05-15-78 (N-131-1) 07-13-81
12-11-81
12-05-84
12-05-87
12-03-90
Material for Internal Pressure Retaining Items for Pressure Relief Valves,Section III,
Division 1, Class 1, 2, and 3 Code Case 1759-1 is acceptable subject to the fol- lowing condition in addition to those conditions specified in the Code Case: Applicants using this Case should also use Code Case 1711 for the de- sign of pressure relief valves.
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 sus- tained loads in service.
N-265-1
05-19-85 Modified SA-487 Castings,
05-19-88 Section III, Division 1, Class 1 N-337-1
07-18-85 Use of ASTM B525-70 Grade
07-18-88 II, Type II, Sintered Austen-
03-14-91 itic Stainless Steel for Class 2,
3, and MC Component Stan- dard Supports,Section III,
Division 1 N-348-2
08-14-90
Use of SA-574 Socket Head Cap Screws,Section III, Divi- sion 1 Code Case N-348-2 is acceptable subject to the following condition in addition to those conditions specified in the Code Case: Applicants should jus- tify in their Safety Analysis Reports why use of these socket head cap screws will not result in early failure from stress corrosion cracking.
N-438-3
07-27-92 UNS N08367 Material, Sec- tion III, Division 1, Class 2 and 3 Construction N-440
02-23-87 Use of 20Cr-18Ni-6Mo (Al-
12-11-89 loy UNS J93254)
Castings, Class 2 and 3 Construction,Section III, Division 1 N-443-1
03-08-89 High Yield Strength Cr-Mo
04-30-92 Steel, Class 1 Components,Section III, Division 1 N-459
05-04-88 SA-508 Basic Oxygen-Ladle
03-14-91 Furnace Process for Code Construction,Section III, Di- vision 1 N-474-1
03-05-90 Design Stress Intensities and.
.Yield Strength Values for UNS N06690 With a Mini- mum Specified Yield Strength of 35 ksi, Class 1 Compo- nents,Section III, Division 1 N-475
12-11-89 Materials in Inventory, Sec- tion III, Division 1 N-492
12-03-90
Grade 9 Titanium Alloy, Sec- tion III, Division 1, Class 1, 2, and 3 N-497
05-13-91 Use of Fe-Ni-Cr-Mo-N
(CN-3MN)
Cast Materials,Section III, Division 1, Class 2 and 3 Construction I
N-205
05-15-78
07-13-81
07-13-84
07-13-87
08-14-90
N-246-2
05-25-83
07-30-86
07-30-89
07-27-92 N-249-11
05-13-91 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 Additional Material for Sub- section NF, Classes 1, 2, 3, and MC Component Supports Fabricated Without Welding,Section III, Division 1 I
Code Case N-249-11 is acceptable subject to the following conditions in addition to those condi- tions specified in the Code Case: The fracture toughness requirements apply only to piping sup- ports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be character- ized 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 impact test results for the material meet
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
(3)
Code Case involving pipe and tubes:
(4)
Code Case involving general usage:
N-5-1
12-13-82 Nickel Chromium Age Hard-
12-13-85 enable Alloys (Alloy X750),
Section III,
Division
1, Classes 1, 2, 3, MC, and CS
1345-2
03-09-72 Requirements for Nickel- (N-6)
03-01-79 Molybdenum-Chromium-Iron Alloys,Section III
1395-4
01-08-79 SA-508, Class 2 Forgings with (N-9-4)
07-01-82 Modified Manganese Con- tent,Section III
1407-3
07-01-74 Time of Examination for (N-10)
01-08-79 Classes 1, 2, and 3, Sec-
01-21-82 tion III Vessels N-351
07-16-82
05-19-85
05-19-88
03-14-91 Use of Subsize Charpy V-Notch Specimens,Section III, Division 1
09-17-84
09-17-87
1412-4
11-03-75
01-01-77 Modified High Yield Strength Steel for Section III, Division
1, Class 1 Vessels N-484-1
12-16-91 Real Time Radioscopic Exam- ination of Welds, Class
1 Components,Section III,
Division 1 N-501
07-27-92 Alternative Rules to NCA-
3800, 1990 Addenda 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
01-08-79 Requirements for Steel Forg- (N-1-7)
07-01-82 ings,Section III, Division 1 Code Case 1412-4 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: The information re- quired to be developed by Note 1 in the Code Case should be provided 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
08-29-77 High Yield Strength Cr-Mo (N-1 1-5)
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 specified in the Code Case: The information re- quired to be developed by Note 1 in the Code Case should be provided in each referencing Safety Analysis Report.
1L
4 23-2
03-09-72 Wrought Type 304 and J16
07-01-77 with Nitrogen Added, Sec- tions I, III, VIII, Division 1 and 2 Code Case 1423-2 was acceptable subject to com- pliance with the recommendations contained in Regulatory Guides 1.31, "Control of Ferrite Con- tent in Stainless Steel Weld Metal," and 1.44,
"Control of the Use of Sensitized Stainless Steel."
1434-1
03-09-72 Postweld Heat Treatment of
01-01-78 SA-487 Class
8N
Steel Castings,Section III
1456-2
06-25-73 Substitution of Ultrasonic (N-15)
03-01-79 Examination for Progressive Penetrant or Magnetic Par- ticle Examinations of Partial Penetration and Oblique Nozzle Attachment Welds,Section III
1334-3
04-29-74 (N-2)
01-08-79
01-01-81
1335-10
08-28-78 (N-3-10)
08-28-81
09-16-84 Requirements for Corrosion- Resisting Steel Bars and Shapes,Section III
Requirements for Bolting Materials,Section III
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 reaffirma- tion 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.
1.85-5
1474-1
10-29-71 (N-17)
01-08-79
01-21-82
01-21-85
01-21-88
01-21-91 Integrally Finned Tubes for Section III
1542-1
04-29-74 (N-33)
01-08-79
01-21-82
01-21-85 Type 403 Forgings or Bars for Bolting Material,Section III
1475-16
03-02-74 Ferritic-Austenitic Stainless
07-01-75 Steel Seamless Tubes for Section III, Class 2 and 3 Construction
1498-1
11-06-72 SA-508-Class
2 and
3, (N-22)
01-08-79 Minimum Tempering Tem-
07-01-82 perature,Section III
1515
03-09-72 Ultrasonic Examination of
07-01-77 Ring Forgings for Shell Sections,Section III, Class 1 Vessels
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 Regulatory Guides 1.31, "Control of Ferrite Con- tent in Stainless Steel Weld Metal," and 1.44,
"Control of the Use of Sensitized Stainless Steel."
1527
06-26-727 Integrally Finned Tubes, (N-26)
01-08-79 Section 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 specified in the Code Case: The information re- quired to be developed by Note 1 in the Code Case should be provided in each referencing Safety Analysis Report.
15296
06-29-72 Materials for Instrument Line
07-01-73 Fittings,Section III
1557-3
01-08-79 Steel Products Refined by (N-37-3)
07-01-82 Secondary 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 Electrodes,Section III
1568
03-03-73 Testing Lots of Flux Cored
01-01-78 and Fabricated Carbon and Low Alloy Steel Welding Electrodes,Section III
1571
03-03-73 Additional Material for (N-41)
01-08-79 SA-234 Carbon Steel Fittings,
01-21-82 Section III
01-21-85
1578
06-25-73 SB-167 Nickel-Chromium- (N-43)
01-08-79 Iron (Alloy
600)
Pipe or
07-01-82 Tube,Section III
1583
06-25-73 Use of 80-40 Carbon Steel
03-21-77 Castings,Section III
15876
08-13-73 SA-508 Class 3 Forgings with
12-31-75
0.4/1.0 Ni for Section III and VIII, Division 2 Construction
1590
08-13-73 Chemical Analysis Variations,
03-21-77 Section III Construction
1602-1
04-29-74 Use of SB-42 Alloy
122,
12-31-74 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
1605
11-05-73 Cr-Ni-Mo-V Bolting Material
11-20-78 for Section III, Class 1 Com-
03-17-80
ponents
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 (N-56)
07-01-78 Steel Rod and Bar for Section III, Class 1, 2, 3, and CS
Construction
1613
12-17-73 Use of SA-372 Class IV Forg-
01-01-78 ings,Section III Construction
1615
12-17-73 Use of A587-73,Section III,
01-01-78 Class 3 Construction
1531
1532
08-14-72 Electrical Penetrations, Spe-
03-21-77 cial Alloys for Electrical Penetration Seals,Section III
08-14-72 Section III, Class 3 Compo-
01-01-78 nents Made of 8 Percent and
9 Percent Nickel Steel
6Code Case was annulled on date as indicated, but the annul- ment was first so indicated in Revision 12 of this guide.
7Corrected date.
1.85-6
16166
12-17-73 Ultrasonic Examination of
07-01-75 Seamless Austenitic Steel Pipe,Section III,
Class
1 Construction
16226
03-02-74 PWHT of Repair Welds in
01-01-76 Carbon Steel Castings, Sec- tion III, Class 1, 2, and 3
1625
03-02-74 Repair of Section III Class 2
12-31-74 and 3 Tanks
1626-1
01-08-79 Normalized and Tempered (N-65-1)
01-21-82
1-1/4 Cr Low Alloy Steel
01-21-85 Forgings,Section I and Sec- tion III
1634-2
08-13-76 Use of SB-359 for Section III,
(N-68)
07-01-78 Division 1, Class 3 Construc- tion
16378
04-29-74 Effective Date for Compliance
01-01-75 with NA-3700 of Section III
16456
08-12-74 Use of DeLong Diagram for
01-01-76 Calculating the Delta Ferrite Content of Welds in Section III, Class 1, 2, and CS Con- struction
1648
08-12-74 SA-537 Plates for Section III,
07-01-76 Class 1, 2, 3, and MC Com- ponents
16496
08-12-74 Modified SA 453-GR 660 for
01-01-76 Class 1, 2, 3, and CS Con- struction
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 Section III Class 2 and 3 Construction
1666
11-04-74 Use of SB-12, Alloy 122 for
07-01-75 Section III, 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
01-01-77 III Construction,Section III,
Division 1
1691
04-28-75 Ultrasonic Examination in
01-01-78 Lieu of Radiography of Repair Welds for Vessels,Section III,
Class 1
1698
06-30-757 Waiver of Ultrasonic Transfer (N-92)
11-20-78 Method,Section III, V, and
07-13-81 VIII, Division 1 eCode Case 1637 was accepted only on a case-by-case basis.
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 calibration block is fabricated should be of the same product form, alloy, and heat treatment as the material being examined. Alloys of equivalent P-number grouping may be used for the fabrication of calibration blocks if adjustments to signal height can be made to compensate for sound beam attenuation difference between the calibration block and the material under examination by following the transfer method procedure of T-535.1(d), Article 5,Section V,
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 Postweld Heat Treatment of (N-102-2) 07-13-81 P-1 Material,Section III,
06-30-84 Class MC
1722-1
01-08-79 Vacuum, Carbon Deoxidized (N-107-1) 01-08-82 SA-508 Forgings,Section III,
Division 1
1724
11-03-75 Deviation from the Specified (N-108)
07-01-78 Silicon Ranges in ASME
Material Specifications, Sec- tion III, Division 1, and VIII,
Division 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 Re-
01-01-78 quired Number of Impact Tests for Rolled Shapes, Sec- tion III, Division 1, Subsec- tion NF, Component Supports
1742
03-01r76 Use of SB-75 Annealed
07-01-76 Copper Alloy
122,Section III,
Division
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
1747
03-01-76 Requirements for Martensitic (N-124)
01-08-79 Stainless Steel Forgings with
07-13-81
13%
Chromium and
4%
07-13-84 Nickel,Section III, Division 1
07-13-87
1.85-7
1748
03-01-76 Low Carbon Austenitic Stain- (N-125)
07-01-78 less Steel Pipe Welded With Filler Metal,Section III, Divi- sion 1, Construction
1754
01-14-77 Hard Surfacing by the Spray- (N-126)
01-07-80
Fuse Method,Section III,
12-13-82 Class 1, 2, and 3 Construction
1755-1 (N-127)
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 Alternative Rules for Exami- nation of Welds in Piping,Section III, Class 1 and 2 Construction
1794
01-14-77 Use of Seamless Al-Br, Alloy (N-157)
01-07-80
CDA 614 Pipe,Section III,
01-07-83 Division 1, Class 3
1795
01-14-77 Examination of Weld Repairs (N-158)
07-01-78 in Forgings,Section III,
Division 1, Class 1, 2, 3, MC
and CS
1798
01-14-77 Use of ASTM
A352-75,
01-01-78 Grades LCA and LCC, Sec- tion 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,
Division 1, Class 1, 2, 3
1819-110,11 03-23-77 Use of Type XM-19 for (N-176-1)
03-23-80
Construction,Section III,
08-25-80
Division 1, Class 1, 2, and 3 I
1760
04-26-76 Maximum Dimensions for
01-01-78 Isolated Pores in Welds-Class
1 Components,Section III,
Division 1
1.766
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
1770
08-13-76 Testing of Electroslag Wire (N-139)
01-01-79 and Flux for Class 1, 2, 3, MC, and CS Construction,Section III, Division 1
1772
08-13-76 Use of SA-453 Bolts in Serv- (N-140)
08-30-79 ice Below
800'F Without
07-16-82 Stress Rupture Tests, Section
12-31-85 III, Division 1
1773
08-13-76 Use of Other Product Forms
07-01-77 of Materials for Valves, Sec- tion 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
09-10-76 Use of Modified SA-487 (N-147)
07-01-78 Grade CA6NM,Section III,
Division 1, Class 1, 2, 3, MC
or CS
1782
09-10-76 Use of Copper-Nickel Alloy (N-148)
08-30-79
962 for Castings,Section III,
07-16-82 Division 1, Class 3 Construc-
06-30-83 tion
1787
09-10-76 Depth of Weld Repairs for
01-01-78 Forgings,Section III, Division
1, Class 1, 2, 3, MC and CS
Construction
1793
01-14-77 Structural Steel Rolled (N-156)
01-07-80
Shapes,Section III, Division
02-14-83
1, Class 2, 3, and MC
02-14-86
08-25-83
1820
03-23-77 (N-177)
03-17-80
02-14-83
01-01-84 Alternative Ultrasonic Exami- nation 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, Di- vision 1 N-180
07-11-77 Examination of Springs for
07-01-78 Class 1 Component Standard Supports,Section III, Divi- sion 1 N-181
07-11-77 Steel Castings Refined by the
07-11-80
Argon Decarburization Proc- ess,Section III, Division 1,
1, Construction N-183
07-11-77 Use of Modified SA-182
01-01-80
Grade 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,
Division 1 N-204
03-20-78 Use of Modified SA-508,
01-01-81 Class 3, and SA-541, Class 3 for Section III, Division 1, Class 1, 2, and 3 Construction
9This Code Case was reaffirmed as Case 1819-1. See regula- tory position 2 for the effective dates.
10Case 1819 (N-176) was annulled December 31, 1977.
However, it was later reaffirmed to continue providing rules pertaining to external pressure charts.
"1Code Case N-176-1:
The 3-23-80 is an annulment date.
This Case was allowed to expire on 3-23-80 because of an ad- ministrative error. It was reinstated on 8-25-80 with no techni- cal changes. It is, therefore, considered to be in effect during that lapse in time. The 8-25-83 is the mandatory annulment date. The Case did not appear in Revisions 18-21 of this guide because of the ASME administative error.
I
1.85-8
N-206
03-20-78 Use of ASTM
B151-75
03-16-81 Copper-Nickel Alloy 706 Rod
06-30-83 and Bar for Section III,
Division 1, Class 3 Construc- tion N-207-1
03-19-79 Use of Modified SA-479 Type
01-21-82 XM-19 for Section III,
01-21-85 Division 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 Use of ASTM A500 Grade B
04-05-84 and ASTM A501 Structural
04-05-87 Tubing for Welded Attach-
04-05-90
ments for Section III, Class 2,
3, and MC
N-225
11-20-78 Certification and Identifica-
01-01-81 tion of Material for Compo- nent 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
Materials Certification, Sec-
05-06-83 tion III, Division 1, Classes 1,
06-30-84
2, 3, MC, and CS Construc- tion Code Case N-242-1 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: Applicants should identify in their Safety Analysis Reports the com- ponents and supports for which the Code Case is being applied and should specify the respective paragraphs of the Code Case.
N-245
07-09-79 Use of ASTM B61-76 and
07-16-82 B62-76 Copper Alloy Castings
07-17-85 for Section III, Division 1, Class 3 Construction N-246
07-09-79 Use of SB-169, Alloy CA
09-07-82
614,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 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-265 12
01-07-80
09-01-83
12-31-84
05-19-85 N-267
01-07-80
07-01-81 N-274
03-17-80
09-07-82
06-30-86 Modified SA-487 Castings,Section III, Division 1, Class 1 Double-Wall Radiography,Section III, Division 1, Class 1 and 2 Alternative Rules for Exami- nation of Weld Repairs for Section III, Division 1 Con- struction Code Case N-274 was acceptable subject to the following condition13 in addition to those condi- tions specified in the Code Case. Paragraph 6 should be expanded as follows: The ultrasonic examination procedures shall be proven by actual demonstration, to the satisfaction of the Author- ized Nuclear Inspector, that the procedures are capable of detecting unacceptable cracks accord- ing to Section XI requirements.
N-277
03-17-80
Use of Type XM-19 Austen-
09-17-80
itic Stainless Steel for Sec- tion III, Division 1, Class MC
Construction N-295
01-15-81 NCA-1140,
Materials, Sec-
12-11-81 tion III, Division 1
06-30-82 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 11, Division
1, Class 1, 2, 3, and MC
N-299-1
07-18-85 Use of Nickel-Chromium-
02-23-87 Molybdenum-Columbium Al- loy 625 Forgings,Section III,
Division 1, Class 2 and Class 3 Components N-310-.
08-14-81 Cerification of Bolting Mate-
07-01-82 rials,Section III, Division 1, Class 1, 2, 3, MC and CS
12Code Case N-265 was allowed to expire on 1-7-83 because of an administrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, consid- ered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annul- ment 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 effect during the period of 12-31-84 through 5-19-85.
1 3The reason for the conditional acceptance of paragraph 6 is to make certain that there is a qualified ultrasonic testing proce- dure capable of detecting small flaws and differentiating the small flaws from geometric reflectors. This paragraph does not in any way alter the acceptance criteria as specified in paragraph
3.
1.85-9
Code Case N-310-1 was 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 (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 Equip- ment 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,
Division 1, Class 1 N-342
04-02-82 Use of SA-249 and SA-312
04-02-85 Type
317 Stainless Steel,Section 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 following condition in addition to those conditions specified in the Code Case: Applicants should jus- tify 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 specified in the Code Case: Applicants should jus- tify 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 Marking of SA-354 Grade BD
05-19-85 Bolting,Section III,
Divi-
09-05-88 sion 1 N-367
02-14-83 SA-372 Type V, Grade 1,
02-19-86 Class B,
Section III,
Divi-
02-19-89 sion 1
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 be- cause there were no changes in the Code Case, the NRC consid- ers that the Code Case was in effect during the period 9-7-85 through 2-20-86.
N-371-1
07-18-85
12CR-1W-1Mo-1/4V Marten-
07-18-88 sitic Stainless Steel Valve Internals,Section III, Divi- sion 1 N-372
02-14-83 SB-163 Ni-Fe-Cr-Mo-Cu
12-31-83 Alloy
825 (UNS
N08825)
Tubing,Section III, Division 1 N-378
10-28-83 Examination of Piping Sup-
10-28-8615port Material,Section III,
Division 1, Class
1 N-388
07-25-83 Component Support Bolting,
07-30-86 Section III,
Division
1,
02-23-87 Classes 2, 3, and MC
N-398
02-20-84 Reporting of Charpy-V Notch
02-20-87 Test Results,Section III,
Division 1 Code Case N-398 is acceptable subject to the fol- lowing condition in addition to those conditions specified 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 indicate in the Safety Analysis Report the component supports to which the case is applied for review on a case-by-case basis.
N-470
03-08-89 Class MC Material Require-
03-08-92 ments [NE-2121(c)],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 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,16 and title.' 7
1332-6
03-09-72 Requirements for Steel Forg-
01-08-79 ings,Section III and VIII,
Division 2
1335-9
04-29-74 Requirements for Bolting
08-28-78 Materials
1337-9
04-29-74 Special Type 403 Modified
04-28-75 Forgings or Bars,Section III
1337-10
04-28-75 Special Type 403 Modified
05-15-78 Forgings or Bars,Section III
15The annulment date of 12-31-84 that was listed in Revi- sions 24 and 25 was in error. The annulment date should be
10-28-86.
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.
I
1.85-10
1344-5
04-29-74 (N-5)
01-08-79
01-21-82
12-13-82 Nickel-Chromium, Hardenable Alloys X750),Section III
Age- (Alloy
1358-5
11-03-75 High Yield Strength Steel, (N-7)
01-08-79 Section 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 specified in the Code Case: The information re- quired to be developed by Note 1 in the Code Case should be provided in each referencing Safety Analysis Report.
1395-3
11-06-72 SA-508, Class 2 Forgings with
01-08-79 Modified Manganese Con- tent,Section III or Section VIII, Division 2
1407-2
06-26-72 Time of Examination for Class
07-01-74
1,
2, and
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 specified in the Code Case: The information re- quired to be developed by Note 1 in the Code Case should be provided 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 specified in the Code Case: The information re- quired to be developed by Note 1 in the Code Case should be provided in each referencing Safety Analysis Report.
1484-1
04-29-74 SB-163 Nickel-Chromium-
11-04-74 Iron Tubing (Alloy 600) at a Specified Minimum Yield Strength of 40.0 Ksi,Section III, Class 1
1484-2
11-04-74 SB-163 Nickel-Chromium-
08-13-76 Iron Tubing (Alloy 600 and
690) at a Specified Minimum Yield Strength of 40.0 Ksi,Section III, Class 1
1484-3
08-13-76 SB-163 Nickel-Chromium- (N-20)
08-30-79 Iron Tubing (Alloy 600 and
07-16-82
690)
and Nickel-Iron-
05-19-85 Chromium Alloy 800
at a
09-05-85 Specified Minimum Yield Strength of 40.0 Ksi,Section III, Division 1, Class 1 N-20-1
09-05-85 SB-163 Nickel-Chromium-
12-07-87 Iron Tubing (Alloy 600 and
690)
and Nickel-Iron- Chromium Alloy 800
at a Specified Minimum Yield Strength of 40.0 Ksi,Section III, Division 1, Class 1 N-20-2
12-07-87 SB-163 Nickel-Chromium-
11-30-88 Iron Tubing (Alloy 600 and
690)
and Nickel-Iron- Chromium Alloy 800 at a Specified Minimum 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
01-08-79 Secondary Remelting
1618
03-02-74 Material for Core Support
03-03-75 Structures-Section III, Sub- section 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 per- formed when the material is in the solution-treated condition.
b. Use of alloy ASTM A-564. Grade 631 is not acceptable on a generic basis.
1618-1
03-03-75 Material for Core Support
03-01-76 StructuresSection III, Sub- section 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
03-01-76 Material for Core Support (N-60)
01-08-79 Structures-Section III, Divi-
01-21-82 sion 1, Subsection NG
05-25-83
18Code Case 1492 is no longer listed by ASME as a Section III
Code Case and is therefore deleted from the acceptable listing.
1.85-11
Code Case 1618-2 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: Welding of age-har- denable 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,
Division 1 Code Case N-60-1 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: Welding of age-har- denable alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in the solution-treated condition.
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 specified in the Code Case: Welding of age-har- denable 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 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 soution-treated condition. For SA-479 material, the maximum yield strength should not exceed 90,000 psi in view of the sus- ceptibility of this material to environmental crack- ing.
1626
03-02-74 Normalized and Tempered
01-08-79
1-1/4 Cr Low Alloy Steel Forgings, 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 Supports-Section 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 specified in the Code Case: The maximum meas- ured ultimate 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 specified in the Code Case: The maximum meas- ured ultimate tensile strength of the component support material 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 specified in the Code Case: The maximum meas- ured ultimate tensile strength of the component support material 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 specified in the Code Case: The maximum meas- ured ultimate tensile strength of the component support material should not exceed 170 Ksi.
1644-4
03-01-76 Additional Materials for Com-
08-13-76 ponent Supports and Alter- nate Design Requirements for Bolted Joints,Section III,
Division
1, Subsection NF,
Class 1, 2, 3 and MC Con- struction Code Case 1644-4 was acceptable subject to the following conditions in addition to those specified 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 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 considered acceptable for a ma- terial and, under this condition, the Design Speci- fication should specify impact testing for the mate- rial. 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 ma- terial is not subject to stress corrosion cracking by I
1.85-12
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 fre- quent sustained loads in service.
1644-5
08-13-76 Additional Materials for Com-
03-03-77 ponent Supports and Alter- nate Design Requirements for Bolted Joints,Section III,
Division 1, Subsection NF,
Class 1, 2, 3 and MC Con- struction Code Case 1644-5 was acceptable subject to the following conditions in addition to those specified 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 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 considered acceptable for a ma- terial and, under this condition, the Design Speci- fication should specify impact testing for the mate- rial. 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 ma- terial 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 material has essentially no residual stresses or assembly stresses, and it does not experience fre- quent sustained loads in service.
1644-6
03-03-77 Additional Materials for Com-
11-21-77 ponent Supports and Alter- nate Design Requirements for Bolted Joints, Section Iii, Di- vision 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 ulti- mate tensile 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 corrosion cracking. Certain applications may exist where a UTS value of up to
190 Ksi could be considered acceptable for a ma- terial and, under this condition, the Design Speci- fication should specify impact testing for the mate- rial. 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 ma- terial 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 material has essentially no residual stresses or assembly stresses, and it does not experience fre- quent sustained loads in service.
1644-7
11-21-77 Additional Materials for Coin- (N-71-7)
05-15-78 ponent Supports, Section 1II,
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 ulti- mate tensile 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 corrosion cracking. Certain applications may exist where a UTS value of up to
190 Ksi could be considered acceptable for a ma- terial and, under this condition, the Design Speci- fication should specify impact testing for the mate- rial.. 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 ma- terial 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 material has essentially no residual stresses or assembly stresses, and it does not experience fre- quent sustained loads in service.
1644-8
05-15-78 Additional Materials for Corn- (N-71-8)
01-07-80
ponent Supports,Section III,
Division 1, Subsection NF,
Class 1, 2, 3 and MC Compo- nent Supports Code Case 1644-8 was acceptable subject to the following conditions in addition to those specified 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 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 considered acceptable for a ma- terial and, under this condition, the Design Speci- fication should specify impact testing for the mate- rial. 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 ma- terial 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 material has essentially no residual stresses or assembly stresses, and it does not experience fre- quent sustained loads in service.
1.85-13
1644-9
01-07-80
Additional Materials for Com- (N-71-9)
05-11-81 ponent Supports Fabricated by Welding,Section III, Divi- sion
1, Subsection NF,
Class 1, 2, 3, and MC Com- ponent Supports Code Case 1644-9 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: In the last sentence of paragraph 5.3, reference should be made to para- graph 4.5.2.2, "Alternate Atmosphere Exposure Time Periods Established by Test," of the AWS
D. 1.1 Code for the evidence presented to and ac- cepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time.
N-71-10
05-11-81 Additional Materials for Com-
06-17-82 ponent Supports Fabricated by Welding,Section III, Divi- sion 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 condi- tions specified in the Code Case: The maximum measured ultimate tensile 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 corro- sion 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 condition, the Design Specification should specify impact testing for the material. 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 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 material has es- sentially 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, "Alternate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time.
tions specified in the Code Case: The maximum measured ultimate tensile 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 corro- sion 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 condition, the Design Specification should specify impact testing for the material. 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 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 material has es- sentially 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, "Alternate Atmosphere Exposure Time Periods Established by Test," of the AWS D. 1.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time.
N-71-12
02-14-83 Additional Materials for Com-
02-20-84 ponent Supports Fabricated by Welding,Section III, Divi- sion 1, Class 1, 2, 3, and MC
Code Case N-71-12 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: The maximum meas- ured ultimate tensile strength (UTS) of the com- ponent support material should not exceed 170
Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion crack- ing. 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 material. For these cases, it should be dem- onstrated by the applicant that (1) the impact test results for the material meet code requirements and (2) the material is not subject to stress corro- sion cracking by virtue of the fact that (a) a corro- sive environment is not present and (b) the com- ponent that contains the material 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, ref- erence should be made to paragraph 4.5.2.2, "Al- ternate Atmosphere Exposure Time Periods Es- tablished by Test," of the AWS D.t.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of tim
e. The I
N-71-11
06-17-82
02-14-83 Additional Materials for Com- ponent Supports Fabricated by Welding,Section III, Divi- sion 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 condi-
1.85-14
provisions of paragraph 4.3 are not acceptable on a generic basis. Paragraph 16.2.2 is not acceptable 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 ac- cordance 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 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 Fabricated by Welding, Sec- tion III, Division 1 Code Case N-71-13 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: The maximum meas- ured ultimate tensile strength (UTS) of the com- ponent support material should not exceed 170
Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion crack- ing. 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 material. For these cases, it should be dem- onstrated by the applicant that (1) the impact test results for the material meet code requirements and (2) the material is not subject to stress corro- sion cracking by virtue of the fact that (a) a corro- sive environment is not present and (b) the com- ponent that contains the material 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, ref-
- erence should be made to paragraph 4.5.2.2, "Al- ternate Atmosphere Exposure Time Periods Es- tablished by Test," of the AWS D.1.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of tim
e. Paragraph
16.2.2 is not acceptable as written and should be replaced with the following: When not exempted by 16.2.1 above, the postweld head treatment shall be performed inaccordance with NF-4622 except that for ASTM A-7 10 Grade A material, it shall be at least 1000°F (540'C) and shall not ex- ceed 1150'F (620'C) for Class I and Class 2 ma- terial 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 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. The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, 2, and 3 component supports. The fracture tough- ness of Classes 1, 2, and 3 component supports shall 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-71-14
12-05-85 Additional Materials for Sub-
12-16-86 section NF, Classes 1, 2, 3 and MC Component Supports Fabricated by Welding, Sec- tion III, Division 1 Code Case N-71-14 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: The maximum meas- ured ultimate tensile strength (UTS) of the com- ponent support material should not exceed 170
Ksi in view of the susceptibility of high-strength materials to brittleness and stress corrosion crack- ing. 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 material. For these cases, it should be dem- onstrated by the applicant that (1) the impact test results for the material meet code requirements and (2) the material is not subject to stress corro- sion cracking by virtue of the fact that (a) a corro- sive environment is not present and (b) the com- ponent that contains the material 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, ref- erence should be made to paragraph 4.5.2.2, "Al- ternate Atmosphere Exposure Time Periods Es- tablished by Test," of the AWS D.1.1 Code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of tim
e. Paragraph
16.2.2 is not acceptable as written and should be replaced with the following: When not exempted by 16.2.1, above, the postweld head 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 ex- ceed 1150'F (620'C) for Class 1 and Class 2 ma- terial 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 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. The fracture toughness requirements as listed in this Code Case apply only to piping supports and not to Class 1, 2,
1.85-15
and 3 component supports. The fracture tough- ness of Classes 1, 2, and 3 component supports shall 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.
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 Postweld Heat Treatment of (N-102-1)
08-28-78 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 Re-
01-14-77 quired Number of Impact Tests for Rolled Shapes, Sec- tion III, Division 1, Subsec- tion NF, Component Supports
1755
04-26-76 Alternative Rules for Exami-
01-14-77 nation 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,
Division 1, Class 1, 2, and 3 Code Case 1759 was acceptable subject to the fol- lowing condition in addition to those conditions specified in the Code Case: Applicants using this Case should also use Code Case 1711 for the de- sign of pressure relief valves.
N-188
08-29-77 Use of Welded Ni-Fe-Cr-Mo-
05-15-78 Cu (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 III,
Division 1, Class 1, 2 or 3 Construction N-224
11-20-78 Use of ASTM ASOO 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, Sec-
04-10-80
tion III, Division 1, Classes 1,
2,
3, MC,
and CS
Construction Code Case N-242 was acceptable subject to the following condition in addition to those conditions specified in the Code Case: Applicants should identify the components and. supports requiring the use of paragraphs 1.0 through 4.0 of the Code Case in their Safety Analysis Reports.
N-246-1
09-07-82
05-25-83 N-249
01-07-80
05-11-81 SB-169, Alloy C 61400, Sec- tion III, Division 1, Class 3 Additional Materials for Component Supports Fabri- cated Without Welding, Sec- tion III, Division 1, Subsec- tion NF,
Class
1,
2,
3, and MC Component Supports Code Case N-249 was acceptable subject to the following condition in addition to those conditions specified 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 Additional Materials for
06-17-82 Component Supports Fabri- cated Without Welding,Section III, Division 1, Sub- section NF, Class 1, 2, 3, and MC Component Supports Code Case N-249-1 .was acceptable subject to the following condition in addition to those conditions specified in the Code Case: Paragraph 7 of the
"Reply" should reference the requirements of NF-2600 instead of NF-2800. This is a typographi- cal 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 Fabricated Without Welding,Section III, Division 1 N-249-3
02-14-83 Additional Materials for Sub-
02-20-84 section NF Class 1, 2, 3, and MC
Component Supports Fabricated Without Welding,Section III, Division 1 N-249-4
02-20-84 Additional Material for Sub-
09-17-84 section NF, Classes 1, 2, 3, and MC Component Supports Fabricated Without Welding,Section 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 sup- ports. 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.
1.85-16
N-249-5
09-17-84 Additional Material for Sub-
04-08-85 section NF, Classes 1, 2, 3, and MC Component Supports Fabricated Without Welding,Section 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 sup- ports. 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.
N-249-6
04-08-85 Additional Material for Sub-
09-05-85 section NF, Classes 1, 2, 3, and MC Component Supports Fabricated Without Welding,Section III, Division 1 Code Case N-249-6 was acceptable subject to the following conditions in addition to those condi- tions specified in the Code Case: The fracture toughness requirements apply only to piping sup- ports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be character- ized 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 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 sus- tained 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 Fabricated Without Welding,Section III, Division 1 Code Case N-249-7 was acceptable subject to the following conditions in addition to those condi- tions specified in the Code Case: The fracture toughness requirements apply only to piping sup- ports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be character- ized 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 impact test results for the material meet Code requirements and (2) the material is not sub- ject to stress corrosion cracking by virtue of tke 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 sus- tained 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 Fabricated Without Welding,Section 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 frac- ture toughness requirements 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 character- ized 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 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 sus- tained 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 Fabricated Without Welding,Section III, Division 1 Code Case N-249-9 was acceptable subject to the following conditions in addition to those condi- tions specified in the Code Case: The fracture toughness requirements apply only to piping sup- ports and hot to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be character- ized 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 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
1.85-17
stresses, and it does not experience frequent sus- tained 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 Fabricated Without Welding,Section III, Division 1 Code Case N-249-10 was acceptable subject to the following conditions in addition to those condi- tions specified in the Code Case: The fracture toughness requirements apply only to piping sup- ports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be character- ized 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 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 sus- tained loads in service.
N-352
07-16-82 Use of SA-638 Grade 660
05-19-85 Forgings and Bars Below
07-18-85
700°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-
07-30-86 Mo-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-2lCr-6.5 Mo-0.2N
03-08-89 (Alloy UNS N08367) Seam- less and Welded Pipe, Tube, Plate, Bar, Fittings, and Forg- ings, Class 2 and 3 Construc- tion,Section III, Division 1 N-438-1
03-08-89 Fe-24.5Ni-21Cr-6.5Mo-0.2N
03-05-90
(Alloy UNS N08367) Seam- less and Welded Pipe, Tube, Plate, Bar, Fittings, and Forg- ings, Class 2 and 3 Construc- tion,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-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-lMo Material
04-30-90
Section III,
Division
1, Classes 1, 2, and 3 N-474
05-06-89 Design Stress Intensities and
03-05-90
Yield Strength Values for Al- loy 690 With a Minimum Yield Strength of 35 ksi, Class
1 Components,Section III,
Division 1
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 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 Al- loy 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 Construc- tion Use of ASTM B525-70 Grade II, Type II, Sintered Austen- itic Stainless Steel for Class 2,
3, and MC Component Stan- dard Supports,Section III,
Division 1
19Code Case N-265 was allowed to expire on 1-7-83 because of an administrative 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 al- lowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on 5-19-85. Because of the circum- stances and because there were no changes in the Code Case, the NRC considers that this Case was in effect during the period of 12-31-84 through 5-19-85.
1.85-18
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 of 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 Code Case within the limits specified in the Code Case and applicable regulations or recommended in other regulatory guides.
APPENDIX
NUMERICAL LISTING OF CODE CASES
N-4-11 (1337-11)
N-40
N-7-1 N-41 N-20-3 N-43 N-60-4 N-43 N-71-15 N-44 N-131-1 (1759-1)
N-44 N-188-1 N-44 N-205 N-45 N-246-2 N-46 N-249-11 N-46 N-265-1 N-47 N-294 N-47 N-329 N-48 N-337-1 N-48 N-348-3 N-49 N-351 N-49 N-370-2 N-50
N-379-1 N-50
4
8-1
8-3
9
0
1
3-1
9
6-1
9
4-1
5
2
4-1
2
7
1
2
1.85-19
Federal Recycling Program
w UNITED STATES
NUCLEAR REGULATORY COMMISSION
WASHINGTON, D.C. 20555-0001 FIRST CLASS MAIL
POSTAGE AND FEES PAID
PERMIT NO. G-67 OFFICIAL BUSINESS
PENALTY FOR PRIVATE USE, $300