ML20151H730

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Updates 830310 Response to IE Bulletin 83-01, Check Valve Failures in Raw Water Cooling Sys of Diesel Generators. No Check Valves Located in Cooling Water Sys at Facility. Failure Mechanism Identified in Bulletin Not Possible
ML20151H730
Person / Time
Site: Pilgrim
Issue date: 04/27/1983
From: Harrington W
BOSTON EDISON CO.
To: Allan J, Allen J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
REF-SSINS-6820 83-103, 830427, IEB-83-01, IEB-83-1, NUDOCS 8305050250
Download: ML20151H730 (1)


Text

B O STO N EDISON COMPANY BDO BOYLETON STatET BOSTON, MABSACHUSETTs D2199 U.'. ,'.'.* *.I, .".^."." ' " "' " April 27, 1983

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BECo Letter No.83-103 Mr. James Allen Acting Regional Administrator Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406 License No. DPR-35 Docket No. 50-293

Subject:

IE Bulletin 83-03: Check Valve Failures in Raw Water Cooling Systems of Diesel Generators

Reference:

Letter from NRC to Boston Edison dated March 10, 1983

Dear Sir:

, The reference letter transmitted information concerning the failure of check l valves which were located in lines supplying cooling water to emergency diesel-generators. These failures were in the internals of the check valves.

A review of Pilgrim Station's D-G cooling shows that the cooling water system is an integral system consisting of a circulating pump and a temperature control valve.

There are no check valves in the system; therefore the diesel gener stor failure mechanism identified in Bulletin 83-03 is not possible at Pilgrim.

1 We believe this response satisfies the concerns of Bulletin 83-03, and that no further action is required. Should you require further information concerning l this response, please contact us.

Very truly yours, Commonwealth of Massachusetts) l County of Suffolk )

Then personally appeared before me W.D. Harrington, who, being duly sworn, did state that he is Senior Vice President - Nuclear of Boston Edison Company, the applicant herein, and that he is duly authorized to execute and file the submittal contained herein in the name and on behalf of Boston Edison Company and that the statements in said submittal are true to the best of his knowled e and belief.

My Commission expires:g & af f9gg A AM a j g,

( Notary Puplic ,

cc: Document Control Desk U.S. Nuclear Regulatory Commission Y yttup.y g$g (7 Washington, D.C. 20555 g\1 *b d

o 8305050250 830427 9 '

PDR O ADOCK 05000293 7.

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