ML18219D180

Letter from Indiana & Michigan Power Co to NRC Requesting Extension of Time for Submittal of the Re-Evaluation of ECCS Performance Until 7/28/1975

ML18219D180
Person / Time
Site:	Cook
Issue date:	06/11/1975
From:	Tillinghast J Indiana Michigan Power Co
To:	Kniel K Office of Nuclear Reactor Regulation
References
Download: ML18219D180 (6)

Text

NRC DISTRIBUTION FOR PART 50 DOCKET MATERIAL (TEMPORARY FORM)

CONTROL NO ~64 4 FILE'diana

&; Mich. Pwr Co.

Nev York, N Y John Tillinghast DATE OF DOC 6-11-75 DATE REC'D 6-16-75 LTR TWX RPT OTHE R Mr. Kniel CLASS UNCLASS PROPINFO XXXX ORIG 1 signed INPUT DESCRIPTION: Ltr requesting extension 'of time for submittal of the re-evaluation of ECCS performance until 7-28-75 CC OTHER NO CYS REC'D ENCLOSURES:

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+',i";g(aI II'LeLq> gee June 11, 1975 Docket No. 50-315 DPR No.

58 Mr. Karl Kniel, Chief Pressurized Water Reactors Branch No.

2 Directorate of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.

20555

Dear Mr. Kniel:

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The Order For Modification of License for the Donald C. Cook Nuclear Plant Unit 1 published in the Federal Register on December 27, 1914, requires that a

re-evaluation of Emergency Core Cooling System performance be conducted.

This is to be in accordance with an acceptable evaluation model which conforms to the provisions of 10CFR Part 50 Section 50.46 and is to be submitted no later than June 27, 1975..

We received a draft of an analysis which will form the basis for the re-evaluation from Westinghouse Electric Corporation on June 3, 1975.

However, the analysis is not complete and Westinghouse informs us that we will not receive the completed analysis until June 16, 1975.

Changes to our Technical Specifications require review by both the Plant Nuclear Safety Review Committee and the AEPSC Nuclear Safety and Design Review Committee.

Because of the incomplete information at this time and our desire to perform a thorough evaluation, we will not be able to complete the required review and submit the analysis to the Nuclear Regulatory Commission until July 28, 1975.

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Mr. Karl Kniel t'une ll, 1975 Therefore, ve respectfully request an extension of time for the submittal of the re-evaluation of emergency core cooling system performance until duly 28, 1975.

Very truly yours,

(~'n Ti inghast Vice President JT:ma ceo R ~

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