ML19330C714

LER 80-011/01T-0:on 800714,during Training on Sys,Diesel Generator Cardox Sys Vapor Pilot Valve Found Closed. Cause Not Found.Valve Immediately Locked Open.Valve Also Added to Sys Checkoff & Locked Valve Lists

ML19330C714
Person / Time
Site:	Peach Bottom
Issue date:	07/28/1980
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19330C708	List: ML19330C707 ML19330C714
References
LER-80-011-01T, LER-80-11-1T, NUDOCS 8008110380
Download: ML19330C714 (1)

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EVENT DESCillPTION AND PRODASLE CONSEQUENCES h G.J.!J l During training on the system tit war, discovered the diesel 1

!TC l_.. Jenerator cardox system gr pilot valve was closed. The vapor i JJ2] L _ Pilot valve must h open to_pr_ ovide pressure to ope _n the diesel .

_j E.] [ room cardox deluge valves. The system was therefore inoperable for

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E] [_ _ both automatic and manual injection of cardox, however, the system

• i Ti'[ l_ _is automatically disabled in the event of diesel starts due to IOCA. _

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cr.'" t ut .cstieTson ANo conHECTIVE ACTIO?.S h El l,,, _Investi6ation revealed the_ vapor pilot valve _wasinot on system check-o?."f _ _ _ _ j GE l lists or locked valve list. Investi6ation did not disclose reason fer i gj [ closure. Valve was immediately locked open. To precl_ude future , , j hg[

i occurrence, valve was also added to system check-off lists and locked i li8t-D]~.5] ,, .

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