05000318/LER-1980-031-03, /03L-0:on 800522,containment Gaseous & Particulate Radiation Monitors Failed.Caused by Electrician Accidently Grounding Motor Phase,Causing Pumps to Trip.Control Circuit Failed Due to Armature Not Being Replaced in Solenoid

/03L-0:on 800522,containment Gaseous & Particulate Radiation Monitors Failed.Caused by Electrician Accidently Grounding Motor Phase,Causing Pumps to Trip.Control Circuit Failed Due to Armature Not Being Replaced in Solenoid Valve

ML19318A124
Person / Time
Site:	Calvert Cliffs
Issue date:	06/13/1980
From:	Bauer E, Davis S BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19318A123	List: 05000318/LER-1980-031, Forwards LER 80-031/03L-0 05000318/LER-1980-031-03, /03L-0:on 800522,containment Gaseous & Particulate Radiation Monitors Failed.Caused by Electrician Accidently Grounding Motor Phase,Causing Pumps to Trip.Control Circuit Failed Due to Armature Not Being Replaced in Solenoid
References
LER-80-031-03L, LER-80-31-3L, NUDOCS 8006180480
Download: ML19318A124 (2)

LER-1980-031, /03L-0:on 800522,containment Gaseous & Particulate Radiation Monitors Failed.Caused by Electrician Accidently Grounding Motor Phase,Causing Pumps to Trip.Control Circuit Failed Due to Armature Not Being Replaced in Solenoid Valve

Event date:
Report date:
3181980031R03 - NRC Website

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8 60 61 DOCst ET NUMBER 68 69 EVENT CATE 74 75 REPORT CATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10l2l l At 1045 the containment caseous and narticulata radiatinn noni.tprs 'ailad I(

10 t a l I per T.S. 3.4.6.1.

The monitors were returned to service at 1415. Snwavar.

ll 1014i I they failed again at 1500. The containment caseous and carticulate radiatinn I'

I O l s i Imonitors were returned to coeration at 1550. The containment sumo level l'

I I O Is 1 I alam svstem remained oDerable durino the ovant.

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33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lT(Tl i Durino the course of restorino monitor oumo control circuit back to nomal nnaratinn-t i t i l I see LER 80-030, the electrician accident 1v crnnndad a entnr chaea la=d " hila li12i l unbridging the motor startino contactors causina the Dumns to trio. Aftar ractartinn [i13; I the pumps the control circuit failed due to the armature, that had been oreviousiv ii t4 i l reroved,not beina reolaced in the detector outlet solenoid valve.

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80-31/3L DOCKET HO.

50-318 EVEllT DATE 05/22/80 REDORT DATE 06/13/80 ATTACHMENT

.2 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS:

(CONTIf1UED)

The armature was replaced and the unit was returned to operation.

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