ML19275A045

LER 79-031/01X-0 on 790731:during Normal Operation,Logic Circuit a Would Not Initiate When Power Supplies to Actuation Cabinet Drawers Were Deenergized.Cause Under Investigation

ML19275A045
Person / Time
Site:	Calvert Cliffs
Issue date:	08/17/1979
From:	Beninn R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-031-01X-01, LER-79-31-1X-1, NUDOCS 7908300624
Download: ML19275A045 (2)

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LER 79-31/T4 DDCKET NR. 50417 EVENT DATF 07-31-79 REPORT DATE OR-O b79 ATTAct"ENT ,

EVENT DESERTPTION AND PR09fJTLE CONSEQUENCES ~:.

(CnMTIMEpy by 3e00 p.m.

As a consomaanta af these power suppThis beimr de-enero?7ad, the 'A' and "B" UV Tonic wiTd not have achrated in the event an inif,fativt 5 f onal heet occurved.

Test 5npr had heren performed at 04fM the ssmst verniner f ri which the HV "N* 4 lorrft was actustwrf: it 8% therefore, assimi tha+. the de-enwerrientiarr occunarf within the 7$ heter par 4*<f print- to th t. discovery of fAe event At 7:?0 p.m.

This fs not a repetftive avant.

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