ML19259A733

LER 78-048/03L-0 on 781204:surveillance Test Revealed Failure of a Channel Main Steam Line High Flow Circuitry in Primary Containment Isolation Signal Logic Used to Provide Group 1 Isolation,Due to Failure of 5A-K30A Relay

ML19259A733
Person / Time
Site:	Peach Bottom
Issue date:	12/28/1978
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-78-048-03L, LER-78-48-3L, NUDOCS 7901100230
Download: ML19259A733 (1)

Text

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S Mr. Boyce H. Grier, Director No. 2 L8/3L-o Office of Inspection ir Enforcement, Region i U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

Dear Mr. Grier:

This LER refers to the loss of an instrument channel for main steam line high flo.r. The applicable Technical Specifications are table 3 2.A and 6.9 2.b(2).

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EVENT otSCalPfloN ANo PaosasLE CONSEQUENCES h El Vhile at Dover. surveillance testire revealed a failure of the "A" I o a 1 channel " M steam line high flow circuitry in the primary containment I o 4 l isolation signal logic used to provide Gzcup I Isolation. Redundant I f channels were tested and found operable. Safety significance is mir h l. t gI I

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