ML20090D414

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Response to Ltr Re Failure of Westinghouse Models DB-25, DB-50 & DB-75 Circuit Breakers.Breakers Not Installed in ESF or Other Safety Sys
ML20090D414
Person / Time
Site: Nine Mile Point, 05000000
Issue date: 04/03/1973
From: Schneider R
NIAGARA MOHAWK POWER CORP.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20090D412 List:
References
NUDOCS 8302280129
Download: ML20090D414 (1)


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NBAGARA MOHAWK POWER CORPORATION NI GARA MOHAWK

' 300 tatt soultvano wgST I

t SymACutt.= v e3202 April 3, 1973 Mr. James P. O'Reilly United States Atomic Energy Consnission ,

Region I, Division of Compliance 970 Broad Street Newark, New Jersey 07107

Dear Mr. O'Reilly:

Re: Provisional Operating License: DPR-17 Docket No.: 50-220 Regarding your letter concerning the failure of Westinghouse Models DB-25, DB-50, and DB-75 circui't breakers, I am pleased to infom you that Nine Mile Point Nuclear Station, Unit No. I has not installed any of systcms.

safety these breakers in the engineered safeguard systems or other The results of the investigation into this matter also shows that the above make and model of Westinghouse circuit breaker employing over- [

current trip time delay devices is not used in any system of Nine Mile Point Nuclear Station, Unit No. 1. ,

8 Very truly yours, I

I 6e%,Qff Vice-President Operations

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