ML19338F303

Informs That Good Cause Shown for Request of Extension of Time to Submit Preliminary Evaluation of ECCS Based on Review of 741025 & 1101 Ltrs.Extension Granted Until 741114

ML19338F303
Person / Time
Site:	Dresden
Issue date:	11/01/1974
From:	Case E US ATOMIC ENERGY COMMISSION (AEC)
To:	Abel J COMMONWEALTH EDISON CO.
References
NUDOCS 8010170694
Download: ML19338F303 (2)

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KRGoller Novesaber 1, 1974 TJCarter N ~.

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P0'Connor Dockst lio. 50-10 EGCase RMDiggs EE.==

ORB #2 Reading

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Mr. J. S. Abel

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Nucicar Licensing A.4mf niatrator -

L Reading Boiling k'ater Reactors SVarga i=

Post Office Box 767 Chicago, Illinois 60690 p::7=:

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Gentlemen:

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By letter of November 1,1974, you informed us of the results of your F.

.ZE preliminary evaluation of ECCS performance indicating that the opera-

......c;G tion of Dresden Unit 1 would be in conformance with the Comiasion's ITE:s=

Acceptance Criteria set forth in 10 CFR Part 50, Section 50.46. You M= 7 indicated, as reflected in your earlier etter of October 25, 1974, that, although you had the results af ethe prs = iminary evaluation, the report of this evaluation would be submitted by November 14, 1974.

Your letter stated that although every effort was made to complete and 4

to submit your evaluation by October.,lly-1874, in accordance with the h

Determination dated August 5,1974 by the Director of Regulation,

{4 modifications to ECCS calculational models to perform the preliminary

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cvaluation were more extensive than estimated and entailed more time

E" in perforcing the calculations. These factors included consideration of the various fuel types in the Dresdca Unit 1 facility. Further

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information was sought by the reactor manufacturer as late as October 22, 1974, in order to co=plete the evaluation.

On the basis of your statement as to results of the preliminary evalu-6 ation, you have requested authority to continue operation of Dresden

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Unit 1 in accordance with the Determination of the Director of Regulation dated Aucu;;t' 5,1974.

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The staff has reviewed your letter of October 25, 1974, and your letter of I;ovecher 1,1974, and concludes that good cause has been shown for an extension of time to submit the preliminary evaluation of ECCS performance until November 14, 1974. Any further action by the AEC in response to your letter of Ibvember 1,1974, will depend upon the results of our review of your submittal.

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Sincerely' E

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2-November 1, 1974..

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Mr. Charles Whitmore President and Chairman f.;::.;:.

Iowa-Illinois Gas and g.;..; g-Einctric Company 206 East Second Avenue Davenport, Iowa 52801

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John W. Rowe, Esquire Ishact, Lincoln & Beale f.:.I==

Counselors at Law One First National Plaza 5;..

Chicago, Illinois 60670 ll l.~.

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Anthony Z. Roisman, Esquire Berlin, Roisman and Kessler l:. :..E..

1712 N Street, N. W.

Washington, D. C.

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