ML20137Z788
| ML20137Z788 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 03/06/1986 |
| From: | Lear G Office of Nuclear Reactor Regulation |
| To: | Fay C WISCONSIN ELECTRIC POWER CO. |
| References | |
| NUDOCS 8603130123 | |
| Download: ML20137Z788 (3) | |
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MAR cG 386 Docket Nos.: 50-266 and 50-301 Mr. C. W. Fay, Vice President Nuclear Power Department Wisconsin Electric Power Company 231 W. Michigan Street, Room 308 Milwaukee, Wisconsin 53201
Dear Mr. Fay:
SUBJECT:
REPORTS ON PRA INSIGHTS - (P0 INT BEACH UNITS 1 AND 2)
Enclosed are two draft reports concerning technical insights gained from Probabilistic Risk Assessments (PRAs). These reports are the outcome of an ongoing effort to make available and utilize in numerous technical and I
managerial activities the information in PRAs regarding the factors which dominate the risk associated with nuclear power plants.
This effort includes identification of the features of design or operational practices which have been'found to be important to safety in the types of plants which have been subjected to risk assessments.
In addition, the section on insights into PRA methodologies focuses on areas which are sensitive to the results of the PRA and the overall perception of plant weaknesses and vulnerabilities.
4 In particular, these reports contain discussions of: general insights on plant strengths and weaknesses gained from PRAs; the contribution to core melt frequency from classes of sequences induced by various initiating events; modifications, both hardware and procedural, which have been implemented to j
address problems identified in the conduct of or as a result of PRAs; insights into PRA methodologies; and the contribution to measures of risk (core melt frequency and consequences of radioactive releases) from systems, components and events.
These reports are being provided to you, as well as all other licensees, in advance of formal publication for your information. Your comments and suggestions are welcome on these reports.
l Sincerely, 86 3130 860 George E. Lear, Director p
PDR Project Directorate #1 Division of PWR Licensing-A
Enclosures:
As Stated i
cc: w/o Enclosures See Next Page Office:
LA/ PAD #1 PM/ PAD #1 PD/ PAD #L Surname:
PShuttleworth TColburn/tg Glear h Date:
03/ /86 03/*f/86 03/ Y 86
/
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Mr. C. W. Fay Point Beach Nuclear Plant Wisconsin Electric Power Company Units 1 and 2 cc:
Mr. Bruce Churchill, Esq.
Shaw, Pittman, Potts and Trowbridge 1800 M Street, N.W.
Washington, DC 20036 Mr. James J. Zach, Manager Point Beach Nuclear Plant Wisconsin Electric Power Company 6610 Nuclear Road Two Rivers, Wisconsin 54241 Mr. Gordon Blaha Town Chairman Town of Two Creeks Route 3 Two Rivers, Wisconsin 54241 Chairman Public Service Commission of Wisconsin Hills Farms State Office Building Madison, Wisconsin 53702 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 799 Roosevelt Road Glen Ellyn, Illinois 60137 Resident Inspector's Office U.S. Nuclear Regulatory Commission 6612 Nuclear-Road Two Rivers, Wisconsin 54241
DISTRIBUTION:
cDocket No.. 50-266/301-NRC PDR Local PDR-Glear OELD E. Jordan B. Grimes J. Partlow T. Colburn PShuttleworth ACRS (1)
PD#1 r/f PD#1 s/f
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