ML20085M451

Interim Deficiency Rept Re Failure of Connector G9 of Electrical Penetration Ef at Control Rod Drive Svc Platform. Initially Reported on 731203.Investigation Continuing.Final Rept Will Be Submitted on 740203

ML20085M451
Person / Time
Site:	Browns Ferry
Issue date:	01/04/1974
From:	Gilleland J TENNESSEE VALLEY AUTHORITY
To:	Kruesi F US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20085M433	List: ML20085M441 ML20085M451
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8311080584
Download: ML20085M451 (1)

Text

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@TENNESSEE VALLEY ACPrHOAITY a CHATTANOOGA, TENNESSEE 37401 January 4, 1974 40 ggggg PARTN E A S HIP Mr. F. E. Kruesi, Director Directorate of Regulatory Operations Y U.S. Atomic Energy Commission Washington, DC 20545

Dear Mr. Kruesi:

In conformance with paragraph 50.55(e) of 10 CFR 50, this is submitted as an interim report of a possible design deficiency which was initially reported to AEC-DRO Inspector W. S. Little on December 3, 1973. The failure was in connector G9 of elec-trical penetration EF of Browns Ferry Nuclear Plant unit 2, the worst damage occurring at two pins connected to the 480-volt single phase powcr outlet to the control rod drive service platform.

Personnel at the construction site have prepared a report describing the failure and that report is being reviewed by engineers in our Division of Engineering Design. Further inves-tigation is required to determine conclusive'ty the cause of failure.

We expect to submit a final report by February 3,1974.

Very truly yours, J. E. Gilleland Assistant to the Manager of Power 1

CC: Mr. Norman C. Moseley, Director Directorate of Regulatory Operations __[j fW

.([,.f U.S. Atomic Energy Commission A:. Y J .D Region II - Suite 818 j .h$ d;i.

230 Peachtree Street, NW.

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