ML20127L481

Submits Proposed Mods to Lll Proposal for Probabilistic Assessment of Seismic Hazard to Eastern Us Plant Sites.Lll Agreed to Mods

ML20127L481
Person / Time
Issue date:	10/26/1983
From:	Kimball J Office of Nuclear Reactor Regulation
To:	Rolonda Jackson Office of Nuclear Reactor Regulation
Shared Package
ML20127A418	List: IA-84-243, Std Order for DOE Work: Determination of Event Sequences Contributing to Overall Frequency of Core Melt, Issued to Sandia Natl Labl ML20127A415 ML20127A447 ML20127A453 ML20127A537 ML20127A553 ML20127A725 ML20127A747 ML20127A751 ML20127A824 ML20127A829 ML20127B146 ML20127L458 ML20127L469 ML20127L481 ML20127L487 ML20127L491 ML20127L510 ML20127L515 ML20127L536 ML20127L560 ML20127L569 ML20127L579 ML20127L582 ML20127L587 ML20127L602 ML20127L607 ML20127L664 ML20127L690 ML20127L696 ML20127L718 ML20127L724 ML20127L738 ML20127L754 ML20127L773 ML20127L806 ML20127L827 ML20127L842 ML20127L862 ML20127L888 ML20127L899 ML20127L910 ML20127L915 ML20127L922 ML20127L944 ML20127L963 ML20127L972 ML20127L996 ML20127M008 ML20127M013 ... further results
References
CON-FIN-A-0448, CON-FIN-A-448, FOIA-84-243 NUDOCS 8505230005
Download: ML20127L481 (2)

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$ MEMORANDUM FOR: Robert E. Jackson, Chief

, Geosciences Branch, DE THRU: Leo Her, Leader 2

Seismology Section, GSB, DE

! FROM: Jeff Kimball, Geophysicist j Seismology Section, GSB, DE i

SUBJECT:

LLNL DRAFT PROPOSAL FOR PROBABILISTIC ASSESSMENT OF

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THE SEISMIC HAZARD FOR EUS NUCLEAR POWER PLANT SITES (FINA0448) 9 As you know Dr. Dae Chung of Lawrence Livermore National Laboratory (LLNL)visitedtheNRCofficesonOctober 20, 1983. Part of the discussion involved the tasks and sub-tasks that LLNL will complete as part of the Probabilistic Assessment cf the Seismic Hazard for EUS Nuclear Power Plant sites. Although the NRC has yet to officially send out a request for a proposal, LLNL has given us a draft proposal dated .

October 13, 1983. Within this draft LLNL has suggested useful modifications to what we will be sending them in the statement of work.

The modifications that we concurred upon are listed below and they will also appear in the final proposal.

1. Task 2 - the overall computations will not be initiated until feedback questionnaire data, compiled as part of the Seismic Hazard Characterization Program (RES FIN A0390; NRR Fin A0428) has been included in seismicity files.

2. As a result of number 1 above, subtask 3.1 can be eliminated.

Ll 3. Subtasks 3.2 and 4, dealing with comparisons with USGS i probabilistic map and historic hazard computations will be

! completed on 20 sites, not all sites. The NRC will choose these 20

!! sites.

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l 4 The original Task 6 will be eliminated because it is not clear, at this time, what this task will involve, particularly financially.

j This task was to develop alternative forms of seismic input, such as event specific spectra. While work in this area would possibly

. be beneficial in the future, it is not worthwhile at this time.

. Harold Lefevre requested that Task 6 now become a travel task so

, that all travel can be kept track of. LLNL agreed and will provide the words in the final proposal. ,_ ,

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! The above modifications make the program more efficlent and eliminate potential budget problems that LLNL has stated in the cover letter i accompanying the October 13, 1983 draft proposal. LLNL's revised proposal will meet the overall budget of the program of $360K in FY 84 and $120K in FY85. .

j eff Kimball, Geophysicist Seismology'Section i Geosciences Branch, DE

j. cc: J. Knight

L. Reiter

• S. Brocoum J. Kimball "

H. Lefevre

• A. Murphy O

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