ML20141N036

Forwards Two Draft Repts Re Technical Insights Gained from Pras,Including Plant Stengths & Weaknesses,Contribution to Core Melt Frequency from Classes of Sequences Induced by Various Initiating Events & Mods.W/O Encls

ML20141N036
Person / Time
Site:	Hope Creek
Issue date:	02/24/1986
From:	Wagner D Office of Nuclear Reactor Regulation
To:	Corbin McNeil Public Service Enterprise Group
References
NUDOCS 8603030454
Download: ML20141N036 (3)

Text

f

• Docket No. 50-354 OISTRIBUTION:

-Docket No.30-354 NRC PDR Mr. Corbin A. McNeill, Jr., Vice President-Nuclear Local PDR Public Service Electric & Gas Company BWD-3 r/f Nuclear Administration Building EAdensam P.O. Box 236 EHylton Hancocks Bridge, New Jersey 08038 0 Wagner RBernero

Dear Mr. McNeill:

Attorney, OELO JPartlow BGrimes

Subject:

Reports on PRA Insights EJordan ACRS(10)

Enclosed are two draft repcrts concerning technical insights gained from Probabilistic Risk Assessnents (PRAs). These reports are the outcome of an on-going effort to make available and utilize in numerous technical and tranagerial activities the information in probabilistic risk assessments 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 irportant to safety in the types of plants which have been subjected to risk assessments. In addition, the section on insights into PRA method focuses on areas which are sensitive to the results and the overall perception of plant weaknesses and vulnerabilities.

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; modifi-cations, both hardware and procedural, which have been implemented to address problems identified in the conduct 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 will be published in their final forms in approximately two months.

These reports are being provided to you, as well as all other licensees, in advance of formal publication for your information. If, after reviewing these reports, you wish to provide coments to the staff, please provide them by March 25, 1986.

Sincerely,

/S/

David Wagner, Project Manager BWR Project Directorate No. 3 Division of FAR Licensing

Enclosures:

As stated cc: See next page

'WD-3 DBL d

DUN [3:0BL DWagner/hmt EAdensam 2Qj/86 2/1 /06 0603030454 060224 PDR ADOCK OD000354 h PUR

s -

Mr. C. A. McNeill Public Service Electric & Gas Co. Hope Creek Generating Station CC:

Gregory Hinor Susan C. Remis Richard Hubbard Division of Public Interest Advocacy Dale Bric'enbaugh New Jersey State Department of MHa Technical Associates the Public Advocate 1723 Hamilton Avenue, Suite K Richard J. Hughes Justice Comples San Jose, California 95125 CN-850 Trenton, New Jersev 086?5 Troy 8. Conner, Jr. Esquire Office of Legal Counsel Corner A Wetterhahn Department of Natural Resources 1747 Pennsylvania Avenue N.W. and Environmental Control Washinoton, D.C. 20006 89 Kings Hiohway P.O. Box 1401 Dover, Delaware 19903 Richard Frylino, Jr., Esquire Mr. K. W. Burrowes, Project Engineer Associate General Solicitor Pechtel Power Corporation Pubite Service Electric A Gas Company 50 Beale Street P. O. Box 570 TSE P. O. Box 3965 l Newark, New Jersov 07101 San Francisco, California 94119 Manager - Licensing and Requlation Resident Inspector c/o Public Service Electric & Gas U.S.N.R.C. Rethesda Office Center Suite 550 P. O. Rox 241 45?0 East-West Highway Hancocks Bridgn, New Jersey 08038 Bethesda, Maryland 20814 Ms. Rebecca Green Richard F. Engal New Jersey Bureau of Radiation Deputy Attornov Ganeral Protection Division of Law 380 Scotch Road Environmental Protection Saction Trenton, New Jersey 08628 rictiard J. Hughes Justice Complex C% 11?P Trenton, Now Jersey 08625 Mr. Pobert J. Touhev, Mr. Anthony il. Pietrofitta I,ctino Director General Manaaer DNREC - Olvision of Powee Production Enqineering Environmontal Control Atlartic Electric 89 Kings Highway 1100 Black Horse Pike P. O. Box 1401 ,

Pleasantville, New .lersey 08?3?

Dover, Delaware 19901 Regional Administrator, Region I Mr. R. S. Salvesen U. S. Nuclear Roonlatory Conmission General Manaqer-Hope Creek Operation 631 Park Avenue Public Service Electric A Gas Co. Kino of Prussia, Pennsylvania 19406 i P.O. Roy A Hancocks Bridge, New Jersey 08038

s -

Public Service Electric & Gas Co. Hope Creek Generating Station cc:

Mr. B. A. Preston Public Service Electric A Gas Co.

Hope Creek Site MC12Y Licensing Trailer 12LI Foot of Buttonwood Road Hancocks Bridge, New Jersey 08038

\

l

. . . .