ML20087G655

Forwards Documenting Discovery of Errors in Predicted Consequences Reported in Severe Accident Risk Assessment.Consideration of Admissibility of Contentions Should Proceed as Scheduled.Related Correspondence

ML20087G655
Person / Time
Site:	Limerick
Issue date:	03/13/1984
From:	Wetterhahn M CONNER & WETTERHAHN, PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Brenner L, Cole R, Morris P Atomic Safety and Licensing Board Panel
References
NUDOCS 8403200090
Download: ML20087G655 (3)

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RELATED CORRESPONDENCE I.AW Ol'PICES GONNER 6e WETTERHAHN P.C.

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Administrative Judge Lawrence Bronnor Atomic Safety & Licensing Board Administrative Judge Peter A. Morris U.S. Nuclear Regulatory Commission Atomic Safety & Licensing Board Washington, D.C.

20555 U.S. Nuclear Regulatory Commission Washington, D.C.

20555 Administrative Judge Richard F. Cole Atomic Safety & Licensing Board U.S. Nuclear Regulatory Commission Washington, D.C.

20S55 In the Matter of Limerick Generating Station, Units 1 and ?

Docim t Non. ';U-T,P L '20-353 Gen tlemen:

2 The attached letter documents tho discovery of certai predicted consequences reported in Applicant's Severe Accide t Ri n errors in t.hc Assessment.

Applicant wishes to brin 6 this matter to the attention a

n sk Atomic Safety & Licensing Board and affected parties a d 3

of the NRC Staff, Limerick Ecology Action and the City of Phil d l r.

participants the as possible in view of the forthcoming consideration bf conta e phia, as so,on to the Staff's supplemental draf t environmental imp entions related i

of differences in methodology and codos, act statement.

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to have been similarly affected.

the NRC Staff results do not appear E

admissibility of contentions cannot proceed as scheduledApplican of the 5@

' discovery requests necessary by this developme tAny changen g

a s informal es possible.

n will be provided as soon (Z

!5 15 Sincerely yours, 3

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BEF 152E Mark J. Wetterhahn

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Counsel for Applicant ifi$

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Judge Richard F. Cole Troy D.* Conner, Jr., Esq.

Ann P. 4todgdon, Hug.

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Lowiu seri G.'vurkin, uun.

Mr. Thomas Gerusky Director, Pennsylvania Emorgency Management Agency Mr. Steven P. Itershoy Charles W. Elliott, Eug. *

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M r. Joselsp 11. Whitu, 111 David Wersan, Esq.

Robert J. Sugarman, Esq.

Martha W. Bush, Euq. * *

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Jay M. Gutierrez, Esq.

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PHILADELPHIA ELECTRIC COMPANY 23O1 M ARKET STREET P.O. BOX 8699 1001 1001 P' ILADELPHIA. PA.19101 H

JOHN 5. KEMPEft vics#n gslOENT

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March 13, 1984 Docket Nos. 50-352 50-353 Mr. A. Schwencer, Chief Licensing Branch No. 2 Division of Licensity U.S. Nuclear Regulatory Coinnission Washington, D.C.

20555

Subject:

L2merick Goncratire Station, Units 1 and 2 Severe Accident Risk Asmeamant (SARA)

File:

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Dear Mr. Schwencur:

meteorological data frcm emputer tape to the input appropria consequences computer program (CI%C2), certain errors were made which g

As a result, scme corrections are required of the Severe Ac

-g Assessnent (SARA) performed for Lincrick.

The corrections to be made will not affect the predicted frequency of accidentap they will affect only the predicted consequences.

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While the rev'. sed calculations have not becn ccmplotcd, it is estinotcx1 that the largest impact will be on the predicted latent cancer fatalities.

The existing results of SAFA predict an individual cancer fatality risk of about one chance in one billion per year in the region within 50

~n in miles of the plant due to potential severe accidents.

Ei that corrected results will predic It is anticipated i

in seven hundred million per year.t that the chance has changed to'one

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frcm all causes other than Lincrick is about one chance in five hurdred'ihe hi per year.

Supplcment 3 to the SARA report, which is planncd to be subnittcd by April 10, 1984, s-as presented in Chapter 12, Results ard Comin=ims,will docutent the cor irf a

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Sincerely,

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