05000317/LER-1980-047-03, /03L-0:on 800920,sump Drain 1-MOV-5463 Failed to Shut.Caused by Blown Fuse in Controller.Fuse Replaced

/03L-0:on 800920,sump Drain 1-MOV-5463 Failed to Shut.Caused by Blown Fuse in Controller.Fuse Replaced

ML20008E218
Person / Time
Site:	Calvert Cliffs
Issue date:	10/17/1980
From:	Lagiewski J, Rizzo P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20008E216	List: 05000317/LER-1980-047, Forwards LER 80-047/03L-0 05000317/LER-1980-047-03, /03L-0:on 800920,sump Drain 1-MOV-5463 Failed to Shut.Caused by Blown Fuse in Controller.Fuse Replaced
References
LER-80-047-03L, LER-80-47-3L, NUDOCS 8010240426
Download: ML20008E218 (1)

LER-1980-047, /03L-0:on 800920,sump Drain 1-MOV-5463 Failed to Shut.Caused by Blown Fuse in Controller.Fuse Replaced

Event date:
Report date:
3171980047R03 - NRC Website

text

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u.S.NUCI.EM REGULATO%Y COMMISSION LICENSEE EVENT REPORT J

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8 60 61 DOCKET NuM8ER 68 69 EVENT DATE 74 75 REPCRT DATE 80 EVENT DESCalPTIoN AND pro 8ABLE CONSEQUENCES h foTil I At 1540, upon completion of draining the containment nonnal sumo. the I

g o,3 i i sump drain valve (1-MOV-5463) failed to shut. The redundant isolation I

io i4 i i valve (1-MOV-5462) was imediately shut and 1-MOV-5463 was shut manually I

io isi i and deactivated per T.S. 3.6.4.1.b.

1-MOV-5463 was returned to service I

io is i I at 1612. This is not a repetitive occurrence.

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3 40 41 42 43 44 47 CAUSE oESCRIPTIoN AND CORRECTIVE ACT!oNS h litol l The C'Jse for failure of 1-MOV-5463 to shut was a bicwn fuse (Shawmut 1

i s li i l Catalog No. A6YI Type 2) in its controller (ITE Rowan Series 5600 I

i,i2i i Control Center). Trouble shooting revealed no circuit arounds nor over-i,,3l l current cundition. The fuse was reolaced with a soare. Since this has I

ii i4 i l not been a repetitive event, no further action is olanned.

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NAME oF PREPARER