[Federal Register Volume 60, Number 15 (Tuesday, January 24, 1995)]
[Notices]
[Pages 4642-4643]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-1715]
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NUCLEAR REGULATORY COMMISSION
Regulatory Guide; Issuance, Availability
The Nuclear Regulatory Commission has issued a 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.
Revision 1 of Regulatory Guide 1.160, ``Monitoring the
Effectiveness of Maintenance at Nuclear Power Plants,'' provides
guidance on meeting the Commission's rules on maintenance and
monitoring the effectiveness of maintenance in nuclear power plants.
Although the concept of trigger values was included in the original
guide as an option to be used as an alert to reveal emergency diesel
generator performance problems that may need additional monitoring or
corrective actions, it was clearly noted that conformance with such
triggers was not a statistical demonstration of maintaining the
emergency diesel generator reliability levels at levels selected for
compliance with the station blackout rule (10 CFR 50.63). Since there
has been continued misinterpretation of the triggers as related to
statistical achievement of selected emergency diesel generator
reliability, all language in this Revision 1 to Regulatory Guide 1.160
pertaining to emergency diesel generator performance and trigger values
was deleted to avoid any misconceptions on their statistical
significance. The Commission expects that in implementing the
maintenance rule as applied to emergency diesel generators, each
licensee will set performance goals that are consistent with the
licensee's coping analysis performed to comply with the station
blackout rule (10 CFR 50.63), unless there is a documented basis for
the inconsistency.
No comments were received from the public regarding emergency
diesel generator performance as related to the deletion of the trigger
values. However, a number of comments were received requesting further
clarification of [[Page 4643]] language in a guide, and the NRC staff
has made some minor changes in language, as appropriate. Comments were
also received from the Nuclear Energy Institute, State of Illinois
Department of Nuclear Safety, Arizona Public Service Company, PECO
Energy Company and Northeast Utilities System on matters that were not
directly related to the removal of emergency diesel generator
performance criteria and trigger values or clarification of language in
the draft version of this guide, DG-1031, which was issued in June
1994. These matters were addressed previously in response to the
comment period for the maintenance rule C10 CFR 50.65) and Regulatory
Guide 1.160, and the commenters did not present new information that
would lead the NRC staff to reconsider their prior resolution. The
comments received, and the staff's basis for disposition of the
comments, are available for public inspection and copying at the
Commission's Public Document Room, 2120 L Street NW., Washington, DC.
Comments and suggestions in connection with items for inclusion in
guides currently being developed or improvements in all published
guides are encouraged at any time. Written comments may be submitted to
the Rules Review and Directives Branch, Division of Freedom of
Information and Publications Services, Office of Administration, U.S.
Nuclear Regulatory Commission, Washington, DC 20555.
Regulatory guides are available for inspection at the Commission's
Public Document Room, 2120 L Street NW., Washington, DC. 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, Post Office Box 37082, Washington, DC 20013-7082,
telephone (202) 512-2249. Issued guides may also be purchased from the
National Technical Information Service on a standing order basis.
Details on this service may be obtained by writing NTIS, 5285 Port
Royal Road, Springfield, VA 22161.
(5 U.S.C. 552(a))
Dated at Rockville, Maryland, this 11th day of January 1995.
For the Nuclear Regulatory Commission.
Eric S. Beckjord,
Director, Office of Nuclear Regulatory Research.
[FR Doc. 95-1715 Filed 1-23-95; 8:45 am]
BILLING CODE 7590-01-M
