ML20211C904

Review of Seabrook PRA, Monthly Mgt Ltr 6 for Oct 1984

ML20211C904
Person / Time
Site:	Seabrook
Issue date:	11/19/1984
From:	Cummings G, Ariuska Garcia LAWRENCE LIVERMORE NATIONAL LABORATORY
To:	Davis S Office of Nuclear Reactor Regulation
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References
CON-FIN-A-0801, CON-FIN-A-801, FOIA-87-6 RARE-84-115, NUDOCS 8702200257
Download: ML20211C904 (5)

Text

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I g Lawrence Livermore National Laborato .

NUCLEAR SYSTEMS SAFETY PROGRAM RARE 84-115 November 19, 1984 1

Ms. Sarah M. Davis Reliability and Risk Assessment Branch Division of Safety Technology U.S. Nuclear Regulatory Commission Washington, D.C. 20555

SUBJECT:

Monthly Management Letter #6 Month of October 1984 NRC FIN-A0801 Review of the Seabrook Probabilistic Risk Assessment

Dear Ms. Davis:

1. Project Description and Objective The Office of Nuclear Reactor Regulation is conducting a probabilistic risk assessment (FRA) review program in which PRAs performed and submitted to the NRC by license applicants and licensees receive comprehensive review and evaluation. The program is the responsibility of the Reliability and Risk Assessment Branch (RRAB).

A PRA of the Seabrook Nuclear Power Plant (Seabrook PRA) has been submitted to the NRC by Public Service Company of New Hampshire, an operating license (OL) applicant. The review of this document, whose title is "Seabrook Station Probabilistic Safety Assessment," is being performed as one project in the larger NRC program.

The objective of this project is to perform an expeditious and cost effective review of those aspects of the Seabrook PRA leading to the estimates of the frequencies of each plant damage state and the associated uncertainty spread to determine the accuracy of these estimates. The review will cover method-ology, assumptions, data, information sources, models, plant understanding, completeness of the analysis and other areas where inconsistencies may arise which could affect the quantitative or qualitative results.

2. Progress for Period

a. Work continued at a steady pace during the month. Much of the review of the systems analysis was completed by month end.

b. A. Carcia attended a meeting with S. Davis and R. Frahm at the NRC offices in Bethesda on October 11, 1984.

3. Work to be Accomplished Next Month {.g g , g 7 ,g,p g Work will continue on the general review of the PRA.

h.*b G702200257 070211 PDH FOIA SHOLLYO7-6 PDR t,tas aws.mme.tnes ,c!can m .po e n n u eve caw onw e renune e c; n:: . r u - .

9 I RARE 84-115 November 19, 1984

4. List of Subcontractors and Consultants We have established subcontractor and consultant agreements with the subcontractors and consultants listed below. We expect to add one or two additional names to this list -- for relatively small efforts in specialized areas, such as the evaluation of fire events.

a. Subcontractors (1) Applied Risk Technology Corporation (ARTECH); P. J. Amico (2) Jack R. Benjamin and Associates, Inc. (JBA); J. W. Reed, M. W.

McCann, Jr.

b. Consultants (1) P. R. Davis

5. Concerns The concerns noted in previous monthly program reports are not resolved.

There were indications at the end of the month that at least some of the documents and material requested from the utility would be provided to us by November 15th. If this material is received as described, we will incorporate as much of it as we can into the preliminary report which we plan to submit to NRC on December 17th. If the utility provides a full response at this late date, including answers to the questions we discussed with them in late August, it is likely that we would not have enough time to be able to incorporate all of the information they provide into our preliminary report.

6. Other Not Applicable Abel A. Garcia Principal Investigator df/J Garth E. Cucunfngs Program Leader (Acting) f' Nuclear Systeus Safety Program er

g O RARE 84-115 November 19, 1984 Enclosures (2)

Distribution:

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NRC DOE LLNL R. Fraha, DST W. J. Gallagher C. E. Cummings J. Halvorsen, DST J. M. Johnso .

F. Rowsome, DST C. A. Meier ,

L. Solander, NRR "';

j A. C. Thadani, DST l

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RARE 84-115 November 19, 1984 ATTACHMENT A ESTIMATED PROJECT FINANCIAL STATUS: October FY 1985 FIN A0801 Summary COST ANALYSIS ** October Year to Date

! Direct Staff Efforts 2.6 FTE-Mo 2.6 FTE-Yr II Direct Labor Costs $ 12.1K $ 12.1K Materials & Services 0.0 0.0 ADP Support 0.0 0.0 Subcontracts 1.9 1.9 Travel Expenses 0.0 0.0 Indirect Labor Costs 12.5 12.5 Other (TID /IRD) 0.7 0.7 Other ( FY84 Unbilled Costs) 0.0 0.0 General & Administrative 0.0 0.0 Total Costs S 27.3K $ 27.3K Liens

• 19.9K Total Costs + Liens $ 47.2K Percentage of Available Funds 38.7%

III Funding Status:

Prior Year FY 1985 Projected FY 1985 Funds FY 1985 Funding Carryover Funding Level Rec 'd to Date Ba1. Needed

$121.9K $261.9K $ 0.0K $140.0K

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• Note: These figures are for cost analysis only, and may differ slightly from final billing figures.

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f RARE 84-115 November 19, 1984 ATTACHMENT B FEE RECOVERY COST STATUS FIN: A0801 TITLE: Review of the Probabilistic Risk Assessment for the Seabrook Nuclear Power Plant PERIOD: October 1984 Docket Costs Facility Name Number Period Cumulative Seabrook 50-443 $27.3K $47K Common Costs 50-900 $ 0.0 0 Total Expenses $27.3K $47K

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