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.  ;[C n u s .p'. w a 1747 PENNSYLVANIA AVENUE. N. W.

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< e=:. w;m ~~~uu 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 2

Gen tlemen:

The attached letter documents tho discovery of certai predicted Assessment. consequences reported in Applicant's Severe n errors in t.hc t Ri Accide a n sk Applicant wishes to brin 6 this matter to the attention 3 Atomic Safety & Licensing Board and affected parties r.

ad of the NRC Staff, Limerick Ecology Action and the City of Phil d l the participants as possible in view of the forthcoming consideration bf conta e phia, as so,on to the Staff's supplemental draf t environmentali imp entions related :j:

of differences in methodology and codos, act statement. Becnuse to have been similarly affected.

of the the NRC Staff results do not appear E 5

admissibility of contentions cannot proceed as scheduledApplican . @

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' esdiscovery possible. requests necessary by n this developme a s informal tAny changen $$

will be provided as soon (Z

!5 Sincerely yours, 15 3

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BEF 152E Mark J. Wetterhahn  ?@

Counsel for Applicant ifi$

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PDR ADOCK 05000352 YEES C PDR b3 I

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ccs Judge Lawronce Dronnor #

Judge Peter A. Morris 8,.

Judge Richard F. Cole

• Troy D.* Conner, Jr., Esq.

Ann P. 4todgdon, Hug. #

Mr. Frank R. Romano Mr. Robert L. Anthony

• Mr. Marvin I. Lowiu seri G.'vurkin, uun.

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

• Angus Lbve, Esq.

M r. Joselsp 11. Whitu, 111 "

David Wersan, Esq. ,'

Robert J. Sugarman, Esq.

Martha W. Bush, Euq. * *

• Uponcu W. Purry, 4:uy.

Jay M. Gutierrez, Esq.

Atomic BaCoty b L.icunning Appeal pourd Atomiu Sut*uty 4. 1.i cuou i sig ___

Board Panel ,

Docket 6 service Section James Wiggins Timothy it. S. Cumpleu t i Phyllis Zitzer  ! d

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PHILADELPHIA ELECTRIC COMPANY 23O1 M ARKET STREET P.O. BOX 8699 1001 1001 P'HILADELPHIA. PA.19101 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: GOVT l-1

Dear Mr. Schwencur:

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

As a result, scme corrections are required of the Severe Ac Assessnent (SARA) performed for Lincrick.

The corrections to be made will only not affect theconsequences.

the predicted predicted frequency of accidentap they will affect [

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

, The existing results of SAFA predict an individual cancer fatality in risk of about one chance in one billion per year in the region within 50 ~n miles of the plant due to potential severe accidents. It is anticipated Ei that corrected results will predic i in seven hundred million per year.t that the chance has changed to'one  !=

frcm per all causes other than Lincrick is about one chance in year. five hurdred'ihe hi Supplcment by April 10, 1984, 3 to the SARA report, which is planncd to be subnittcd ,

s-irf as presented in Chapter 12, Results ard Comin=ims,will docutent the cor @

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Sincerely, $.,5 55 CKf 5 5.. 5

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