ML20205J039
| ML20205J039 | |
| Person / Time | |
|---|---|
| Issue date: | 03/31/1987 |
| From: | NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | |
| References | |
| TASK-CE-410-4, TASK-RE REGGD-03.060, REGGD-3.060, NUDOCS 8704010199 | |
| Download: ML20205J039 (4) | |
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U.S. NUCLEAR REGULATORY COMMIS210N March 1987
@!@\\ REGULATORYGU DE OFFICE OF NUCLEAR REGULATORY RESEARCH REGULATORY GUIDE 3.60 (Task CE 410 4)
DESIGN OF AN INDEPENDENT SPENT FUEL STORAGE INSTALLATION (DRY STORAGE)
A. INTRODUCTION Site Selection and Design of an Independent Spent Fuel Storage Installation (Water-Pool Type)," which has not Subpart F, " General Design Criteria," of 10 CFR Part 72, been endorsed by the NRC. Until ANSI /ANS-2.19-1981 is
" Licensing Requirements for the Storage of Spent Fuelin endorsed by the NRC, the users of ANSI /ANS-57.9-1984 an Independent Spent Fuel Storage Installation (ISFSI),"
should seek guidance from the NRC staff on siting param-presents the general design criteria that are applicable to an eters that are used as design input.
ISFSt. This regulatory guide provides guidance acceptable to the NRC staff for use in the design of a dry storage
- 2. Section 2.8 of ANS!/ANS-57.9-1984 defines a new ISFSI that will comply with these general design criteria.
term, "important confinement features," to classify struc-tures, systems, and components with regard to the degree Any information collection activities mentioned in this of their importance to safety. An existing term,"important regulatory guide are contained in requirements in 10 CFR to safety," is presently defined in 10 CFR Part 72 and is Part 72, which provides the regulatory basis for this guide.
applicable for use. The term "important to safety" should The information collection requirements in 10 CFR Part 72 be used instead of "important confinement features" as have been cleared under OMB Clearance No. 3150-0132.
used in the standard.
B. DISCUSSION
- 3. Section 5.4.5.1 requires that engineered foundations
[N take into account the potential for soilliquefaction during v)
Group 57.7 of Subcommittee ANS-55 (Fuel and Waste Design Event IV occurrences. This section should not be
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Management)of the American Nuclear Society has developed applied to portable storage system modules (i.e., metal ANSI /ANS-57.9-1984, " Design Criteria for an Independent storage casks) that can continue to provide confinement Spent Fuel Storage Installation (Dry Storage Type)."' It independently of storage foundation failure.
was approved as an American National Standard in December 1984, and it defines the design criteria for a dry-type
- 4. Section 5.4.6.1.1 should be supplemented to ensure independent spent fuel storage installation.
that the storage system module will either withstand the maximum credible drop without compromising the integ-C. REGULATORY POSITION rity of the shielding structure or provide the capability for unloading the module. This section should be supplemented ANSI /ANS-57.9-1984 is acceptable to the NRC staff for with the following: "If the storage system module is use in the design of an ISFSI that uses a dry environment as portable, provide the capability for withstanding the the mode of storage subject to the following:
maximum credible drop during transport without compro-mising the integrity of the shielding structure or provide the
- 1. ANSI /ANS-57.9-1984 refers to a companion standard capability for unloading an individual storage module for for design input of siting parameters, ANSI /ANS-2.19-1981, Design Event 111."
" Guidelines for Establishing Site Related Parameters for
- 5. Section 6.2.2.1.2(2) indicates that, in the design
.Coples may be obtained from the American Nuclear Society, analysis of sealed c ntainers, material properties should be 55 5 North Kensington Avenue, La Grange Park, Ittinois 60525.
determine at a temperature 50*C above the design USNRC REGULATORY GUIDES The guides are issued in the following ten broad divisions:
Regulatory Guides are issued to describe and make available to the eNarch s
I ic par s of eC ml o sr I tion t de nd Test Reactors Tr p rtation op 6$
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This guide was issued after consideration of comments received from Docu e U S. Gower ment Pri l t
ox the public. Comments and suggest6ons for improvements in these 37042, wasnington, DC 20013-7082, telephone (202)275-2060 or guides are encouraged at all times, and guides will be revlsed, as (202)275-2171.
appropriate, to accommodate comments and to reflect new informa-tion or experience.
Written comments may be submitted to the Rules and Procedures nfo m ti n Se 6ce on a s ng orde basi e alls on t Branch, DRR A D M, U.S.
Nuclear R egulatory Commission, service may be obtained by writing NTIS, 5285 port Royal Road, Washington, D 20555.
Ngfield. VA 22161.
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temperature for th: fuel unit handling and the storage areas.
constitute an endorsement of the referenced codes and Rather than using 50*C, material properties of the scaled standards.
containers should be determined at temperatures appro-priate for off-normal and accident conditions.
- 9. ANSI /ANS-57.9-1984 includes a number of appen-dices. Endorsement of the standard by this regulatory guide
- 6. Section 6.4.1.3 of ANSI /ANS-57.9-1984 indicates does not constitute an endorsement of the appendices.
that, if the fuel unit heat generation rate is calculated, ANSI /ANS-5.1-1979 is to be used as the basis for the calculation, llowever, the calculational methods in Regula-D. IMPLEMENTATION tory Guide 3.54, " Spent Fuel IIcat Generation in an independent Spent Fuel Storage Installation," should be The purpose of this section is to provide information to used rather than ANSI /ANS-5.1.
applicants regarding the NRC staff's plans for using this
- 7. Section 6.17.2.2.2 should be supplemented to add
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Section til of the ASME Boiler and Pressure Vessel Codes, Except in those cases in which an applicant proposes an as appropriate,in addition to Section Vill.
acceptable alternative method for complying with specified portions of the Commission's regulations, the method
- 8. Section 7 of ANSI /ANS-57.9-1984 lists the codes and described in this guide will be used in the evaluation of standards that are referenced in the standard. Endorsement applications for a dry storage ISFSI submitted under of ANSI /ANS-57.91984 by this regulatory guide does not 10 CFR Part 72.
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4 VALUE/ IMPACT STATEMENT A draft value/ impact was published with the draft guide not been prepared. A copy of the draft value/ impact (Task CE 4104) when the guide was published for public statement is available for inspection and copying for a fee l
comment in November 1985. No changes were necessary, in the Comnussion's Public Document Room at 1717 H so a separate value/ impact statement for the final guide has Street NW., Waalunston, DC 20555, under Task CE 4104.
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