ML20083F951

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Responds to Generic Ltr 83-41, Fast Cold Starts of Diesel Generators. Diesel Generators Equipped W/Continuous Lubrication Sys.Frequent Fast Cold Starts Reduce Reliability & Availability of Diesel Generators
ML20083F951
Person / Time
Site: Kewaunee Dominion icon.png
Issue date: 01/06/1984
From: Giesler C
WISCONSIN PUBLIC SERVICE CORP.
To: Eisenhut D
Office of Nuclear Reactor Regulation
References
CON-NRC-84-4 GL-83-41, NUDOCS 8401100427
Download: ML20083F951 (2)


Text

T W n NRC-84-4 WISCONSIN PUBLIC S ERVICE CORPOR ATION P.O. Box 1200, Green Bay, Wisconsin 54305 January 6, 1984 Director, Office of Nuclear Reactor Regulation Attention: Mr. D. G. Eisenhut, Director Division of Licensing Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Eisenhut:

Docket 50-305 Operating License DPR-43 Kewaunee Nuclear Power Plant Fast Cold Starts of Diesel Generators (Generic Letter 83-41)

The following discussion provides our response addressing the concerns of each item identified in Generic Letter 83-41.

Item 1 How many times in the past year (December 1, 1982 to December 1, 1983) have your emergency diesel generators been subjected to a fast cold start (without pre-lubrication and warmup of any moving parts of the diesel generators)? Provide your data on a per machine basis, for each of the following three categories:

(a) surveillance testing, (b) maintenance activities, and (c) actual demands.

Response

The diesel generators at the Kewaunee Nuclear Plant are equipped with a con-tinuous lubrication system. This system provides warm lube oil to main engine bearings at all times. This continuous lubrication system was supplied with the diesel generators as part of the original purchase order. Therefore, this item is not applicable.

Item 2 What is your assessment of the effects of frequent fast cold starts on diesel generator reliability and availability? Do you believe that they significantly degrade reliability and availability?

8401100427 840106 8 PDR ADOCK 05000305 P PDR I[

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  • Mr. D. G. Eisenhut January 6,1984 Page 2

Response

In our opinion, frequent fast cold starts.of diesel generators reduce the reliability and availability of diesel generators. As to what extent reliabi-lity and availability are affected, we do not know.

Sincerely, (3pJC4xx Ift = '4-~,,

C. W. Giesler Vice President - Nuclear Power DJM/js cc - Mr. S. A. Varga, US NRC Mr. Robert Nelson, US NRC

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