ML19261B417

LER 79-003/03L-0 on 790111:during Unit Shutdown for Maint an Instrument Shutoff Valve to Pressure Switch Found Closed Due to Personnel Error.Unit Operated 9 Days W/Instrument Out of Svc.Appropriate Disciplinary Action Taken

ML19261B417
Person / Time
Site:	Peach Bottom
Issue date:	02/08/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-003-03L-01, LER-79-3-3L-1, NUDOCS 7902210245
Download: ML19261B417 (1)

Text

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4 Mr. Boyce H. Grier, Director No. 3-79-3/3I, Office of Inspection & Enforcement, Region 1 - -

U.S. Nuclear Regulatory Commission 631 Park Avenue THis DOCUMENT CONTAh,lS  :

King of Prussia, PA 19406 g

Dear Mr. Grier:

This I23 concerns the Icas of an instr =ent ch el for heacter Law PreRaure (pe missive for closing recirculating p rp discharge valves and opening logic for care spray and IJCI valvos). The geve=ing Tech.

Spec. is Table 3 2.3, which requires two instranent channels per trip systen to be operable.

U. S. NUCLE AR REGUL AToRY CoMMi$sioN LICENSEE EVENT REPORT ccNTRot stoco l I i l l I !@

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EVENT oESCAIPTION ANo PROSA8LE COP.SEOLENCES @

o12 i 'ahile unit was shutdown for naintenc=ce, an instrrent shutoff valve to I e

o,3i I pressure switch (PS3-2-3-523) was found closed. "his instr =ent is one cf [

g[ fcur providing pernissive to open core spray and LPCI M,issien valvea 1 3is i and to close recirculating punp discharge valve during accident condit- I a a ions. Unit was in cperation for nine days with this instr =ent cut of I o i l service. Consequences are r* 4-d since redundant instr =entatien was i o a  ; operable. I r as

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