ML20087E472
| ML20087E472 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 03/13/1984 |
| From: | Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8403160192 | |
| Download: ML20087E472 (2) | |
Text
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PHILADELPHIA ELECTRIC COMPANY 2301 M ARKET STREET P.O. BOX 8699
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JOHN S. KEMPE R March 13, 1984 vect entstDENT Docket Nos. 50-352 50-353 Mr. A. Schwencer, Chief Licensing Branch No. 2 Division of Licensing U.S. Nuclear Regulatory Comnission Washington, D.C.
20555
Subject:
Limerick Generating Station, Units 1 and 2 Severe Accident Risk Assessment (SMM)
File:
GOVT l-1
Dear Mr. Schwencer:
It has just care to our attention that, in the process of converting meteorological data ran canputer tape to the input amropriate for the consequences conputer program (CPAC2), certair; arrors were made which resulsed in incorrect wind direction frequencies in the CRTC2 calculation.
As a result, sane corrections are requiral of the Severe Accident Risk A u ssment (SARA) performed for Limerick. The corrections to be made will not affect the predicted frequency of accidents; they will affect only the predicted consequences. While the revisal calculations have not been canpleted, it is estimated that the largest impact will be on the predicted latent cancer fatalities.
The existing results of SARA predict an irxlividual cancer fatality risk of about one chance in one billion per year in the region within 50 miles of the plant due to potential severe accidents. It is anticipated that corrected results will pralict that the chance has changed to one in seven hundred million per year. The individual cancer fatality risk from all causes other than Limerick is about one chance in five hunired per year.
Supplement 3 to the SARA report, which is planned to be subnitted by April 10, 1984, will document the correctal data related to consequew.s as presented in Chapter 12, Results and Conclusions.
Sincerely, h) y cc: See Attached Service List l p 8403160192 840313 PDR ADOCK 05000352 A
l cc: Judge Lawrence Drenner Judge Peter A. Morris Judge Richard F. Cole Troy B. Conner, Jr., Esq.
Ann P. !!odgdon, Eug.
Mr. Frank R. Romano Mr. Robert L. Anthony Mr. Marvin I.
Lewis scri G. Fuckin, Eug.
Mr. Thomas Gerusky Director, Pennsylvania Emorgency Management Agency Mr. Steven P.
!!ershey Charles W. Elliott, Esq.
Angua Love, Esq.
M r. Joachp 11. WhlLu, til David Wersan, Esq.
Robert J. Eugarman, Esq.
Martha W. aush, Esq.
Spencu W.
Perry, ELy.
Jay M. Gutiorrez, Esq.
Atomic Saf ety & bicensing Appeal Doard Atomic Safuty b 1.icenuing Board Panel Docket & Servico Section James Wiggins Timothy R.
S.
Campbe1i i
I e
r S
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