ML20128P861

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Review of PRA for Shoreham Nuclear Power Plant, Monthly Highlights for Dec 1983
ML20128P861
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 12/31/1983
From: Kato W
BROOKHAVEN NATIONAL LABORATORY
To: Thadani A, Thandani A
Office of Nuclear Reactor Regulation
Shared Package
ML20127A367 List:
References
CON-FIN-A-3366, CON-FIN-A-3740, FOIA-85-199 NUDOCS 8507130321
Download: ML20128P861 (5)


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Upton. Long 1stond. New York 11973 (516)282s 2444 Department of Nuclear Energy FTS 666' January 16, 1984 Dr. A. C. Thadani, Chief Reliability and Risk Assessment Branch Division of Safety Technology Office of Nuclear Reactor Regulation Mail Stop P-216 U. S. Nuclear Regulatory Commission

, Washington, D. C. 20555

Dear Dr. Thadani:

Enclosed is the December monthly report for the activities sponsored by your Branch. Also included are the computerized budget sununaries and the fee recovery cost status for each program requiring it. I would suggest that you and your staff review the reports to determine whether there are any dis-crepancies. If there are, please notify the principal investigator.

Note that the funds allocated for FIN A-3366 are spent and that the NRC program office was informed of this January 11, 1984 as required by revised Manual Chapter 1102, dated September 24, 1982. Please send the balance of expected funds so that the level of effort may continue without interruption.

The funds received for FIN A-3740 as shown on the financial status page,

, does not reflect the additional $120,000 received in December.

The total amount of unbilled costs through December for FIN A-3366 is

$26,542, which will be billed to NRC when the expected funds are received.

We hope this meets with your approval. If there are any questions re-garding format, distribution, or budget reporting, please contact Mr.

A. J. Weiss, Administrative Technical Assistant, FTS 666-4473.

, S,incerely yours, WYK/jw Walter Y. Kato A

Enclosures Deput airman cc: R. A. Bari, BNL F. Coffman, NRC R. Frahm, NRC B. L. Grenier, NRC R. E. Hall, BNL 8507130321 850426 F. Rowsome, NRC

-J. Veillette, NRC AI 199 PDR A. J. Weiss, BNL NRC Technical Monitors BNL Technical Monttor THIS COPY FOa l .

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.i Division of Safety Technology - NRR J '

December 1983 i

,. 6 Total Projected Funds Obligated Balance of Funds ($K)

,? FIN No. Project Cost ($K) To Date ($K) FY 1984 FY 1985 FY 1986 4

A-3366 436 290 121 25 A-3393 549 549 0 A-3725 1000 650 350

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A-3726 70 70 0 -

't A-3728 330 230 90 10 A-3729 45 40 5

-j A-3740 270 170 100 A-3758 405 0 375 30

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MONTHLY HIGHLIGHTS FOR DECEMBER 1983

" Review of the Probabilistic Risk Assessment for the Shoreham Nuclear Power Plant" (FIN A-3740)

BNL Principal Investigator: I. A. Papazoglou (FTS 666-2435)

NRC Program Manager: A. Thadani, Reliability and Risk Assessment Branch NRC Technical Monitor: Ed Chow, Reliability and Risk Assessment,qg'l THIS COPY .

Branch

1. Scope / Purpose i

The purpose of this project is to review those aspects of the Shoreham PRA leading to the estimates of the frequencies of the accident sequences re-sulting in a " core vulnerable" state and to determine the accuracy of these estimates.

2. Schedule / Milestones A letter of the findings will be submitted to NRC at the completion of each task according to the following schedule.

4

Task 1
Draft Report 4/15/84 i Task 2: Questions to the Applicant 11/31/83 Task 3: Final Report Two months after receiving final comments by NRC and licensee.

L ',

r (j 3. Progress to Date A meeting was held between BNL, LILC0 and LILCO's consultants to discuss questions that were initiated by BNL and submitted to the staff in early December. Qualitative review of the event tree analysis continued. Ef-

!i forts to develop BNL revised event trees were initiated. The review of the j transient initiation grouping and success criteria was completed.

j 4. Problems and Delays 1

None,

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oj _ 5. Next Reporting Period The development of BNL revised event trees will continue. System success I', criteria and initiation grouping for ATWS events will be examined. The re-I view of event trees for internal floods and their initiation frequencies

,4 will be initiated.

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