ML19322E579

LER 80-008/01T-0:on 800305,while at power,E334 Load Ctr Was Shed Automatically Due to Loss of Site Startup Source,But Failed to Recover Automatically.Caused by Agastat Time Delay relay,Model7012PC,not Picking Up on Restoration

ML19322E579
Person / Time
Site:	Peach Bottom
Issue date:	03/19/1980
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19322E578	List: ML19322E577 ML19322E579
References
LER-80-008-01T, LER-80-8-1T, NUDOCS 8003280435
Download: ML19322E579 (1)

Text

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EVENT DESCRIPTION ANO PROBA8LE CONSEQUENCES h M 121 l While at power, E334 Load Center was shed automatically due to loss of I l

no I : I l Unit 3 startup source but failed to recover automatically. Failure was l l

a I4 I I observed by loss of power to 'A' core spray syRtem valves. The 'A' l

'e i b I I T. PCT system had been declared inocerable at the time (T_ER 3-80-03/3L) I o go l l E334 breaker was inanediately reclosed from the control room. 'A' core g l

gl i spray system valves were without power for less than 2 minutes. The 'B' [

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42 43 44 di CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h Ml Agastat time delay relay, Model 7012PC, did not pick up on restoration l El of 4KV oever which orevented the E334 breaker from reclosinm The ratav I

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