ML20086E458

Responds to IE Bulletin 73-1, Faulty Overcurrent Trip Delay Device in Circuit Breakers for Engineered Safety Sys. No Overcurrent Trip Problems Experienced W/Facility Breakers

ML20086E458
Person / Time
Site:	Fort Saint Vrain
Issue date:	02/26/1973
From:	Walker R PUBLIC SERVICE CO. OF COLORADO
To:	Flora J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20086E454	List: ML20086E458
References
REF-SSINS-6820 IEB-73-01, IEB-73-1, NUDOCS 8312070315
Download: ML20086E458 (1)

Text

O 0;

sN PUBLIC SERVICE COMPANY OF COLORADO P.O.

BOX 840 OENVER.

COLORAOO SO201 Feoruary 26, 1973 Mr. John W.

Flora, Director Directorate of Regulatory Operations, Region IV U.S. Atonic Energy Commission 10305 West Colfax, Room 200 Denver, Colorado 80215

Subject:

Fort Saint Vrain Unit No. J AEC Inquiry, R.O. Bulletin 73-1 Circuit Breakers

Dear Mr. Flora:

We are not utilizing Westinghouse Models DB-25 DB-50 or DB-75 circua;t breakers at Fort Saint Vrain.

Circuit breekers used a,n similar service at Fort Saint Vrain were supplied by T.T.~..

Our breakers have undergone testing for overcurrent trip settings, and no problems have been experienced.

Very truly yours,.

22.,'U:(Ud!kw R.

F. Walker, Vice President Engineering and Planning Electric Department 8312070315 730612 PDR ADOCK 05000267 G

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