ML20085G015

Interim Deficiency Rept Re Improperly Operated Auxiliary Switches in Breaker Compartments.Initially Reported on 750115.GE Informed of Deficiency & Recommendations Awaited

ML20085G015
Person / Time
Site:	Browns Ferry
Issue date:	02/14/1975
From:	Gilleland J TENNESSEE VALLEY AUTHORITY
To:	Knuth D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML20085G009	List: ML20085G015
References
NUDOCS 8308240174
Download: ML20085G015 (1)

Text

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O O M TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374ot February 11, 4 1975 Mr. Donald F. Knuth, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20545

Dear Mr. Knuth:

BROUNS FERRY NUCLEAR PLANT UNIT 3 - REPORTABLE DEFICIENCY -

AUXILIARY SWITCHES IN BREAKER COMPARTMENTS OPERATING IMPROPERLY Initial report of the subject reportable deficiency was made to B. J. Cochran, NRC-IE, Region II, on January 15, 1975.

In compliance with paragraph 50.55(c) of 10 CFR Part 50, this is submitted as an interim report.

The MH switch, located in the left-hand side of the 4-kV shutdown breaker compartments and operated by the breaker, is continuing past the closing point and opening the switch contacts. There is a total of 57 of these switches in unit 3 safety-related equipment. The General Electric representative has been informed, and he in turn has notified the GE design organization of the problem. We are now waiting to hear from GE design on their recommendations for corrective action. A final report will be submitted upon completion of the investigation.

Ve truly yours,

)

,a .d( iG L. )

J. E. Gilleland Assistant Manager of Power CC: Mr. Norman C. Moseley, Director

, Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II - Suite 818 230 Peachtree Street, NW.

Atlanta, Georgia 30303 8308240174 750307 .

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'y,J An Equal Opportunity Errployer