05000293/LER-1980-092-03, /03L-0:on 801129,reactor Water Cleanup Pumps Tripped & Valve M01201-2 Could Not Be Remotely Operated. Caused by burned-out GE Control Relay Model CR120A04002AA & Blown MCC Panel Fuse for M01201-2 Control Circuits

/03L-0:on 801129,reactor Water Cleanup Pumps Tripped & Valve M01201-2 Could Not Be Remotely Operated. Caused by burned-out GE Control Relay Model CR120A04002AA & Blown MCC Panel Fuse for M01201-2 Control Circuits

ML19353A400
Person / Time
Site:	Pilgrim
Issue date:	12/29/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19353A395	List: 05000293/LER-1980-092, Forwards LER 80-092/03L-0 05000293/LER-1980-092-03, /03L-0:on 801129,reactor Water Cleanup Pumps Tripped & Valve M01201-2 Could Not Be Remotely Operated. Caused by burned-out GE Control Relay Model CR120A04002AA & Blown MCC Panel Fuse for M01201-2 Control Circuits
References
LER-80-092-03L, LER-80-92-3L, NUDOCS 8101080368
Download: ML19353A400 (1)

LER-1980-092, /03L-0:on 801129,reactor Water Cleanup Pumps Tripped & Valve M01201-2 Could Not Be Remotely Operated. Caused by burned-out GE Control Relay Model CR120A04002AA & Blown MCC Panel Fuse for M01201-2 Control Circuits

Event date:
Report date:
2931980092R03 - NRC Website

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1. 0 EVENT DESCRIPTION AND PAC 8ABLE CONSECUENCES h 10 121 l On November 29, 1980 at approximatelv 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br />. ooeratine eersonnel obser"ed I

l o l 31 I that the open indication light for Reactor Water Cleanuo (RWCU) Isolation Valve l

lo ! Al l M01201-2 on panel 903 in the Control Room went out.

Additionallv. the RWCU ou os l

Io !s1 [ had trioped. Operating personnel deter-ined that RWCU valve M01201-2 could not I

lo le 1 I be remoLalv ooerated and closed valve M01201-5 to isolate the RWCU suction line.

I Ioi7ll A maintenance request was immediatelv issued. the oroblem was resolved and the l

l a ia 1 l valve returned to service at aooroximatelv 0800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br /> the same dav.

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i,,,jl control circuits had blown. The control relav, desienated 16A-K26 is intended l

lil3l l as a RWCU oumo trip interlock with valve M01201-2. The relav and fuse were 11 l4l l replaced and the valve returned to service. This is an isolated event.

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