ML20010J010
| ML20010J010 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 09/18/1981 |
| From: | Bradley E PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Tedesco R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8109290497 | |
| Download: ML20010J010 (12) | |
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PHILADELPHIA ELECTRIC COMPANY 2301 M ARKET STREET P.O. BOX 8699 PHILADELPHI A. PA.19101
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q EUGENE J. BR ADLEY 2 3 793g [-
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OF QUDOLPH A. CHILLEMI C 's Cc%g3 E. C. KIRK HALL
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EDWARD J. CULLEN. JR.
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September 18, 1981 Mr. Robert L. Tedesco, Assistant Director United States Nuclear Regulatory Commission Division of Licensing Office of Nuclear Reactor Regulation Washington, D. C.
20555 Re:
Limerick Generating Station Units 1 and 2 Docket Nos. 50-352 and 50-35S
Dear Mr. Tedesco:
By letters dated March 17, 1981, and July 27, 1981, I forwarded to the Commission a total of 50 copies of the Probabilistic Risk Assessment for Limerick Generating Station.
There are enclosed 50 sets of revised pages for the Probabilistic Risk Assessment.
The changes are principally of a clarifying or typographical nature.
Pursuant to previous requests, we will send sets of the revised pages to Sandia National Laboratory, Brookhaven National L.iboratory, the Chairman of the Board of Supervisors of Limerick Township, Region III of the United States Environmental Protection Agency, the Pennsylvania Department of Environmental Resources, and the Nuclear Regulatory Commission resident inspector at Limerick.
Very truly yours, ge J. Bradle g
EJB:mk Enclosures 8109290497 810918 1
PDR ADOCK 05000352
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LIERICK ENERATING STATION PRNABILISTIC RISK ASSESSMMP The attadwd pages and divider are to be inserted at the end of Volume I of the Limerick Generating Station Prchabilistic Risk Asses-ment report.
1 Septarber,1981 9
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1 LGS PRA QUESTION 720.1 (3.0 PRA)
Fwt=rty damage ocmsequences must be vWwi.
RESPONSE
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T.GS PRA QUESTION 720.2 (3.0 PRA)
Sensitivity studies for latent cancer and property damage are naadad to allow ccuparison with WASH 1400 results based on design and site differences only.
RESPONSE
Sensitivity information on latent cancer is shown on the aU +ai figures. 'Ihe informaticn on property damage will be supplied during the fourth quarter of 1981.
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QUESTION 720.3 (PRA Fault Trees)
Failure prnhnhi1ities need to be aritiM to fault trees to pemit 4el=*4 *4 cation of major contributors to systen unavailabilities.
4 RESPCNSE Fault trees with failure prnhabilities are provided under separat, cover.
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0 Rev 1, 9/81 PRA 720.3
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