ML19254F718

Forwards List of Changes,Tests & Experiments Completed During Oct 1979

ML19254F718
Person / Time
Site:	Quad Cities
Issue date:	11/08/1979
From:	Kalivianakis N COMMONWEALTH EDISON CO.
To:	Case E Office of Nuclear Reactor Regulation
References
NJK-79-412, NUDOCS 7911160475
Download: ML19254F718 (2)

Text

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/ Commonwealth Edison I

l. ' Ouad Cities Nuclear Power Station i

y* 22710 206 Avenue Nor:n Corcova, Ithnois 61242

% Telephone 303/654-2241 11J K-79-412 flovember 8,1979 Mr. Edison G. Case, Deputy Director Of fice of fluclear Reactor Regulation U. S. fluclear Regulatory Commission Washington, DC 20555

Dear Mr. Case:

Enclosed please find a listing of those changes, tests, and experiments completed during the month of October, 1979 for quad-Cities Station Units I and 2, DPR-29 and DPR-30. A summary of the safety evaluation is being reported in compliance with 10 CFR 50.59 Thirty-nine copies are provided for your use.

Very truly yours, COMMONWEALTH EDISON COMPANY QUAD-CITIES tlVCLEAR, POWER STAT 10tl -

/  ! '/

// #dah()

fl. J . Kal iv i anaki s Station Superintendent i1JK/LFT/ san Enclosure l .f,4 /

1 0 2, cc: R. F. Janecek

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7 911160 9ll

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M-4-1/2-76-44 RIVER COMPOSITE SAMPLE SYSTEM Description of Modification This modification involved the installation of a new rive water sampling system which will enable the station to obtain representetive background radiation level information from the Mississippi River. The new system collects river water samples upstream of the station, which are then pumped to a sample tank. This modification was installed because the previous sample system obtained samples from the inlet bay and did not obtain representative river samples during closed cycle operation of the cooling canal.

Summary of Safety Evaluation The operation of this system has no bearing on safe plant operation.

The intended function of the sampling system remains unchanged, however the new system will provide improved monitoring capability of the background radiation levels of the Mississippi River. Consequently plant releases can be more reliably monitored resulting in a greater margin of safety.

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