05000278/LER-1982-009

LER 82-009/03L-0:on 820530,operator Lost Valve Indication Position on HPCI Sys.Caused by Blown Fuse in Instrument Panel Due to Shortened Solenoid Coil in Turbine Exhaust Drain Valve.Fuse Replaced & Valves Stroked

ML20054L708
Person / Time
Site:	Peach Bottom
Issue date:	06/28/1982
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-82-009-03L, LER-82-9-3L, NUDOCS 8207080388
Download: ML20054L708 (1)

LER-2082-009,

Event date:
Report date:
2782082009R00 - NRC Website

text

Mr. R. C. H3ynos No. 3-82-09/03L Ad31nistreter U.S. Nuclocr Regulctory Commission 631 Park Avenue King of Prussia, PA 19406

Dear Mr. Haynes:

This LER concerns inoperability of HPCI system due to loss of valve position indication. Applicable Tech Spec reference is 3.5.C.2.

,, u. s. nucle AR REoVLATORY CoMMisslON LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REoulREo INFoRMAft0N)

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T oATE 80 EVENT DESCRIPTION AND PROB ABLE CONsEOUENCEs h o a l Durine unit startup. operator lost valve cosition indication nn l l several valves associated with HPCI system. If PCI was declared I o 4 1 inoperable in accordance with Tech Soec 3.5 C.2. Problem wn= l o s I traced to a blown fuse on DC instrument panel. Fuse was I o 6 I replaced and ifPcf was returned en service in nnnenvimntalv I o > l thirty (30) minutes. I oa i I YS's" "c'c?d s$e'cNa cou*o=<=T coon su'sS*o'os sUcUs o e

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34 36 3 31 40 al 42 43 44 47 CAusE DESCRIPTION AND CORRECTIVE ACTIONS 27

, o lCause of event was shorted solenoid coil in turbine exhaust drain l g l valve and failure of drain valve fuse to blow before fuse blew on DC 1

, l instrument panel. Panel fuse was replaced and all valves stroked l

, 3 l satisfactorily. Drain valve solenoid coil was replaced. Possible design l

, , i problem and appropriate modifications are under investigation. t eo ao sTA us  % Powf R oTngasTATus D sc R onscovtRv DEsCMtPTioN

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