Regulatory Guide 1.84
| ML13350A351 | |
| Person / Time | |
|---|---|
| Issue date: | 06/30/1974 |
| From: | US Atomic Energy Commission (AEC) |
| To: | |
| References | |
| RG-1.084 | |
| Download: ML13350A351 (5) | |
June 1974 U.S. ATOMIC ENERGY COMMISSION
0 REGULATORY
DIRECTORATE OF REGULATORY STANDARDS
GUIDE
REGULATORY GUIDE 1.84 CODE CASE ACCEPTABILITY
ASME SECTION III DESIGN
AND FABRICATION
A. INTRODUCTION
tested to the highest quality standards practical. Ap- pendix B, "Quality Assurance Criteria for Nuclear Power Section 50.55a, "Codes and Standards," of 10 CFR Plants and Fuel Reprocessing Plants," to 10 CFR Part 50.
Part 50, "Ucensing of Production and Utilization requires, in part, that measures be established for the Facilities," requires, in part, that components of the control of special processing of materials and that proper reactor coolant pressure boundary be designed, fabri- testing be performed. This regulatory guide lists those cated, erected, and tested in accordance with the Section III ASME Code Cases oriented to design and requirements for Class I components of Section III, fabrication which are generally acceptable to the AEC
"Nuclear Power Plant Components,"i of the American Regulatory staff for implementation in the licensing of Society of Mechanical Engineeri (ASME) Boiler and light-water-cooled nuclear power plants.
Pressure Vessel Code or equivalent quality standards.
Footnote 6 to Section 50.55a states that the use of
B. DISCUSSION
specific Code Cases may be authorized by the Commis- sion upon request pursuant to §50.55a(a)(2Xii) which The Boiler and Pressure Vessel Committee of the requires that proposed alternatives to the described ASME publishes documents entitled "Interpretations of requirements or portions thereof provide an acceptable the ASME Boiler and Pressure Vessel Code." t These level of quality and safety. General De--ign Criterion 1, documents, referred to as "Code Cases," explain the
"Quality Standards and Records," of Appendix A, intent of Code rules or provide Code permission to use
"General Design Criteria for Nuclear Power Plants," to alternative requirements under special circumstances or
10 CFR Part 50 requires, in part, that structures, with suitable precautions. Most Code Cases are even- systems, and components important to safety be de- tually superseded by revision to the Code and then are signed, fabricated, erected, and tested to quality stand- annulled by action of the ASME Council.
ards commensurate with the importance of the safety
.function to be performed. Where generally recognized The Code Cases listed in this guide are limited strictly codes and standards are .used, Criterion I requires that to those applicable to Section III which are oriented
- they be identified and evaluated to determine their toward design and fabrication.
applicability, adequacy, and sufficiency and be supple- mented or modified as necessary to assure a quality All published Code Cases in the area of design and product in keeping with the required safety function. fabrication which are applicable .to Section III of the C*.terion 30, "Quality of Reactor Coolant Pressure Code and were in effect on November 5, 1973 were Boundary," of the same appendix requires, in part, that reviewed for inclusion in this guide. Code Cases which components which are part of the reactor coolant are not listed herein are either not endorsed or will pressure boundary be designed, fabricated, erected, and require supplementary provisions on an individual basis to attain endorsement status.
ICopies may be obtained from the American Society of Mechanical Engineers, United Enginecering Center, 345 East The endorsement of a Code Case by this guide
47th Street, New York, N.Y. 10017. constitutes acceptance of its technical position for USAEC REGULATORY GUIDES Copies of published guides may be obtained by request indicating the divisions desired to the US. Atomic Energy Commission, Washington. D.C, 20545.
Regulatotyý Guides are issued to desoibe and make avoilable to the public Attention: Director of Regulatory Standards. Comments and suggestions for methods accptable to the AEC Regulatory stoff of Implementing specific pents of improvements In these guides are encouraged and should be sent to the Secretary the Commissioe's regulations, to delineate techniques v,,edby the staff in of the Commission, US. Atomic Energy Commission, Wtshington, D.C. 20545, evaluating specific prob;ems or postulated accidents, or to provide guidsnce to Attention: Chief. Public Proceedings Staff.
apolicants. Regulatoty Guides are not substitutes for regulations and compliance with them is not required. Methods end solutions different from those set out in The guides are issued in th" following ten broad divisions:
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, 1. Power Reachors
6. Products
2. Research end Test Resictoct
7. Transportation
3. Fuets and Materials Fecilities 8. Occupational Health Published guides will be revised periodically, asappropriate, to accommodate 4. Environmental and Siting 9. Antitrust Review comments and to reflect new Information or experience, S. Materials and Plant Protection 10, General
applications not precluded by regulatory or other (2) Code Cases Applicable to Valve Design requirements or by the recommendations in this or other regulatory guides. Contingent endorsement is indicated 1533 6-14-72 Pressure Temperature Ratings of in Regulatory Position C.l.c for specific cases; however SA-35 1 Grades CF8A, CF3, and
- it is the responsibility of the user to make certain that CF3M,Section III
no regulatory requirements are violated and that there 1534 11.6-72 Overpressurization of Valves, are no conflicts with other recommended limitations Section III
resulting from Code Case usage. 1539 11-6-72 Metal Bellows and Metal Dia- phragm Stem Sealed Valves, Sec- The acceptance or endorsement by the Regulatory tion II, Classes 1, 2, and 3.
staff applies only to those Code Cases or Code Case 1540-1 3-3-73 Elastomer Diaphragm Valves Sec- revisions with the date of "Council Approval" as shown tion i11, Classes 2 and 3 in the Regulatory Position of this guide. Earlier or later 1552 12-18-72 Design by Analysis of Section III
revisions of a Code Case are not endorsed by this guide. Class I Valves New Code Cases as they are issued or future revisions of 1555 12-18-72 Certification of Safety Relief existing Code Cases will require evaluation by the Valves on Liquids Regulatory staff to determine if they qualify for 1573 4-30-73 Vacuum Relief Valves, Section inclusion in the approved list. Because of the continuing Ill change in the status of Code Cases, it is planned that this 1574 4-30-73 Hydrostatic Test Pressure for guide will require periodic updating to accommodate Safety Relief Valves,Section III,
new Code Cases and any revisions of existing Code Classes 1, 2, and 3 Cases. 1581 6-25.73 Power-Operated Pressure Relief Valves Section 11I,Class I
C. REGULATORY POSITION
(3) Other Code Cases Related to Design
1470-2 12-18-72 External Pressure Charts for
1. The Section III ASME Code Cases 2 listed in the High-Strength Carbon Steels and following by number, title, and date of Council approval for Low-Alloy Steels are a:ceptable to the Regulatory staff for application in 1508 12-13-71 Allowable Stresses, Design Stress the construction of components for water-cooled nu- Intensity, and/or Yield Strength clear power plants. Their use is acceptable within the Values of Section 1, II, and VIII,
limitations stated in the "Inquiry" and "Reply" sections Division I and 2 of each individual code case, such Regulatory or other 1536 8-14-72 Closing Seam for Electrical Pene- requirements as may exist, and the additional limitations tration for Section III, Classes 2, recommended by the Regulatory, staff given with the 3, and MC
individual code cases in the list. 1575 4-30-73 Hub-to-Flange Fillet Radius for Bolted Flanges with Nut Stop a. Design-Oriented Code Cases With Title and Date of 1607 11-5-73 Stress Criteria for Section III,
Council Approval C(lasses 2 and 3 Vessels Subjected
(1) .Code Cases Applicable to Piping Design to Upset, Emergency, and Faulted Operating Conditions
1477-1 3-9-72 Use of 1970 Addenda of ANSI
B31.7 "Nuclear Power Piping" b. Fabrication-Oriented. Code Cases with Dates of
1506 12-13-71 Stress Intensification Factors, Council Approval Section I11,Class 2 & 3 Piping (1) Code Cases Related to Welding
1601 11-5-73 Limits of Reinforcement for Two-thirds Area,Section III 1461 3-9-72 Electron Beam Welding, Sections Class 1 1,111, VIII
1606 11-5-73 Stress Criteria for Section III 1471-1 3.9-72 Vacuum Electron Beam Welding Classes 2 and 3 Piping Subjected of Tube Sheet Joints to Upset, Emergency, and 1494-1 3-3-73 Weld Procedure Qualification Faulted Conditions Tests,Section III
1614 11-5-73 Hydrostatic Testing of Piping 1516-1 6-25-73 Welding of Seats in Valves for Prior to or Following the Instal- Section III Applications lation of Spray Nozzles for Sec- 1554 3-3-73 Post-weld Heat Treatment of tion I11, Classes 1, 2, and 3 P-number 1 and P-number 12A,
Piping Systems Subgroup 1 Longitudinal Welds,Section III Classes 1, 2, and 3
2These Code Cases are listed numerically in the Appendix to this components guide. 1580.1 11-5-73 Figure NB4233-1(a),Section III
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(2) Other Code Cases Related to Fabrication
D. IMPLEMENTATION
1535-2 4-30-73 Hydrostatic Testing of Section The following guidance is provided for the implemen-
111 Class I valves tation of Section III ASME Code Cases involving
1541-1 8-13.73 Hydrostatic Testing of Embed- materials and testing.
ded Class 2 and Class 3 Piping for Section III construction 1. The effective date of this guide is July 1, 1974.
155I 12-18-72 Upset Heading and Roll Thread- ing ol SA-453 for High-Tempera- 2. This listing of Code Cases is applicable after the ture Bolting,Section III, Classes effective date of this guide unless a particular Code Case
1, 2, 3, and MC has been annulled by action of the ASME Council.
1588 8-13-73 Electro-Etching of Section 111 Code Symbols
3. Components ordered to a specific version of a Code Case before the effective date of this guide need not be
.c. Code Cases with Contingent Approval changed because a subsequent revision to the Code Case is listed as the approved version in this guide.
1355.3 3-9-72 Electroslag Welding, Section 1, I11, and VIII, Division I and 2
4. Code Cases on the approved list may be applied to This code case is approved subject to the condi- components that were in process of construction prior tions established in Regulatory Guide 1.34, "Con- to the effective date of this guide within the limits trol of Electroslag Weld Properties." specified in the Code Case and applicable regulations or recommended in other regulatory guides.
1361 3-9-72 Socket Welds,Section III
5. Code Cases for Class 1 components which are not on This code case is approved when used in connec- the approved list of this guide or other regulatory guides, tion with Section Ill, paragraph NB-3356, Fillet or for which authorization by the Commission has not Welds. been granted, are not acceptable on a generic basis for Class I components. Special authorization may be
1569 3-3-72 Design of Piping for Pressure granted for individual cases upon special request to the Relief Valve Station Commission.
This code case is approved subject to the condi- 6. Code Cases for other Classes of components which tions established in Regulatory Guide 1.67, "In- are not on the approved list of this guide or other stallation of Overpressure Devices." regulatory guides, or for which authorization by the Commission has not been granted, should not be
2. Code Cases that are annulled by action of the ASME considered acceptable on a generic basis. Specialiauthori.
Council should be considered as deleted from the zation may be granted for individual cases upon special approved list as of the date of the ASME Council aclion. request to the Commission.
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APPENDIX
Numerical Listing of Code Cases
1355-3 1541-1
1361-2 1552
1461-1 1553
1470-2 1554
1.471-1 1555
1477-1 1569
1494-1 1573
1506 1574
1508 1575
1516-1 1580.1
1533 1581
1534 1588
1535.2 1601
1536 1606
1539 1607
1540-1 1614
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APPENDIX
NUMERICAL LISTING OF CODE CASES
1361,2 1541-1 1623
14610i 1552 1625
147&.2 1553 1633
1471-I 1555 1635-1
1477,1 1569 1636-1
1494,1 1573 1651
1506 1574
1508 1580-1
1516,1 1581
- 1533 1588
1535-2 .1606
1536 1607
- 1539 1614
1540.I 1620
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