ML20042D090
| ML20042D090 | |
| Person / Time | |
|---|---|
| Issue date: | 11/04/1988 |
| From: | Houston R NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | |
| Shared Package | |
| ML20042D089 | List:
|
| References | |
| FRN-57FR14514, REF-GTECI-B-56, REF-GTECI-EL, RULE-PR-50, TASK-B-56, TASK-OR AE06-1-014, AE6-1-14, NUDOCS 8811300279 | |
| Download: ML20042D090 (4) | |
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A&o 6-1 7590-01 NUCLEAR REGULATORY COMMISSION Draf t Regulatory Guide; Issuance, Availability The Nuclear Regulatory Commission has issued for public comment a draft of a proposed revision to a guide in its Regulatory Guide Series. This series has been developed to describe and make available to the public such information as methods acceptable to the NRC staff for implementing specific parts of the Commission's regulations, techniques used by the staff in evaluating specific problems or postulated accidents, and data needed by the staff in its review of applications for permits and licenses.
The draft guide, temporarily identified by its task number, RS 802-5 (which should be mentioned in all correspondence concerning this draft guide),
is proposed Revision 3 to Regulatory Guide 1.9, " Selection, Design, Qualification, Testing, and Reliability of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants." This guide has been prepared for the resolution of Generic Safety Issue B-56, " Diesel Reliability."
Section 50.63 of 10 CFR Part 50 requires that light-water-cooled nuclear power plants be capable of withstanding a total loss of alternating current (ac) electric power (called station blackout) for a specified duration and maintaining reactor core cooling during that period. Regulatory Guide 1.155,
" Station Blackout," provides guidance for assessing plant blackout coping capability and further identifies a need for a diesel generator reliability
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. 7590-01 program designed to maintain and monitor reliability levels for assurance that the selected plant emergency diesel generator reliability levels are being achieved.
The staff has previously addressed ri.?1 generator design, reliability, and operational aspects by using IEEE St; 387-1984, Revision 2 of Regulatory Guide 1.9, Regulatory Guide 1.108 (which is being withdrawn), and Generic Letter 84-15. The purpose of this Revision 3 to Regulatory Guide 1.9 is to integrate into a single regulatory guide the guidance previously dispersed in these multiple documents. This regulatory guide will be a principal reference in the NRC staff's resolution of Generic Safety Issue B-56.
Coments are particularly solicited on the following sections of tnis regulatory guide:
1.
Regulatory Position 10, which deals with preoperational and scheduled testing of the diesel generator, with specific attention being directed to Section 10.2.2 dealing with accelerated testing and Section 10.2.4.6 dealing with 24-hour tests.
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Regulatory Position 16, which deals with recordkeeping and reporting criteria.
3.
Regulatory Position 18, which is guidance fcr a diesel generator reliability program.
! 7590-01 This draft guide is being issued to involve the public in the early stages of the development of a regulatory position in this area.
It has not received complete staff review and does not represent an official NRC staff position.
The regulatory and backfit analyses for the station blackout rule included analysis of the diesel general reliability program, which is the subject of this guide. The regulatory analysis is documented in NUREG-1109. A backfit analysis was published with the station blackout rule in the Federal Register June 21, 1988 (53 FR 23203). A summary of these analyses is included in the Backfit Analysis for Regulatory Guide 1.9, Revision 3.
Written comments may be submitted to the Regulatory Publications Branch, Division of Freedom of Information and Publications Services, Office of
' Administration and Resources Management, U.S. Nuclear Regulatory Commission, Washington, DC 20555. Comments may also be delivered to NRC at the Phillips Building, 7920 Norfolk Avenue, Bethesda, Maryland from 7:30 a.m. to 4:00 p.m.
Copies of comments received may be examined at the NRC Public Document Room, 2120LStreetNW.,(LowerLevel), Washington,DC. Written comments are requested by (60 days after publication).
C Although a time limit is given for comments on these drafts, comments and suggestions in connection with (1) items for inclusion in guides currently being developed or (2) improvements in all published guides are encouraged at any time.
Regulatory guidc; are available for inspection at the Commission's Public Document Room, 2120 L Street NW., Washington, DC. Requests for single copies
. 7590-01 of draft guides (which may be reproduced) or for placement on an automatic distribution list for single copies of future draft guides in specific divisions should be made in writing to the U.S. Nuclear Regulatory Comission, Washington, DC 20555, Attention: Director, Division of Information Support Services. Telephone requests cannot be accommodated. Regulatory guides are not copyrighted, and Comission approval is not required to reproduce them.
(5 U.S.C. 552(a))
Dated at Rockville, Maryland, this day of
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can[sfc 1988.
For the Nuclear Regulatory Comission
/ff C..ne Houston, Director Diviaion of Safety Issue Resolution Office of Nuclear Regulatory Research
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