ML20009A987

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Responds to IE Bulletin 81-02, Failure of Gate Type Valves to Close Against High Differential Pressure. No Subj Valves Obtained for Installation or as Spares.Approx 40 Manhours Expended
ML20009A987
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 06/26/1981
From: Matlock R
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To: Engelken R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
GO2-80-160, IEB-81-02, IEB-81-2, NUDOCS 8107140585
Download: ML20009A987 (2)


Text

Docket No. 50-397 Washington Public Power Supply System P.O. Box 968 3000 GeorgeWashingtonWay Richland,Washirigton 99352 (509)372-5000 Docket No. 50-397 Mr. R. H. Engelken, Director June 26, 1981 U. S. Nuclear Regulatory Conmission G02-81-160 g ',

Region V Suite 202, Walnut Creek Plaza Nq 1990 North California Blvd. 7 $6 g# 6 Walnut Creek, CA 94596

Dear Mr. Engelken:

Subject:

SUPPLY SYSTEM NUCLEAR PROJECT N0. 2 DOCKET N0. 50-397, CPPR-93 NRC IE BULLETIN N0. 81-02, FAILURE OF GATE TYPE VALVES TO CLOSE AGAINST HIGH DIFFERENTIAL PRESSURE In accordance wita the subject bulletin a review has been made of all motor-operated gate valves, which are required to operate against hbh differential pressure in the WNP-2 safety related system. The review involved the study of system flow diageans, valve lists and appropriate supplier drawings.

The determination made from the review'is that none of the Westinghouse Electro-Mechanical Division or Borg-Warner Nuclear Valve Division valves, indicated in the bulletin, were obtained for installation or as spares for WNP-2.

Attached, as requested, is an estimate of the manhours by Owner and A/E personnel in conducting the review.

Please contact us if you have additional questions.

Very truly yours, h' Project Director, WNP-2 y

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cc: V. Stello -NRC ND Lewis -EFSEC, Olympia d3 13198W- -3  ;

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RE Snaith -B&R NY 7 WS Chin -BPA g'/j.

s AD Toth -NRC Resident Inspector O *'

JJ Verderber -B&R NY A. Schwencer -NRC ,

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ATTACHMENT MANPOWER ESTIMATE NRC IE Bulletin No. 81-02 Review Hours 1.- Valve identification, documentation review and reporting 40 2 - Corrective action 0 Total 40 i.

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