05000317/LER-1979-019-03, /03L-0 on 790606:discovered That Number 11 Control Room Air Conditioning Unit Breaker Had Tripped.Caused by Windings of Compressor Motor Exceeding Resistance Acceptance Criteria.Compressor Replaced

/03L-0 on 790606:discovered That Number 11 Control Room Air Conditioning Unit Breaker Had Tripped.Caused by Windings of Compressor Motor Exceeding Resistance Acceptance Criteria.Compressor Replaced

ML19246A580
Person / Time
Site:	Calvert Cliffs
Issue date:	06/25/1979
From:	Lagiewski J, Romney K BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19246A579	List: 05000317/LER-1979-019, Forwards LER 79-019/03L-0 05000317/LER-1979-019-03, /03L-0 on 790606:discovered That Number 11 Control Room Air Conditioning Unit Breaker Had Tripped.Caused by Windings of Compressor Motor Exceeding Resistance Acceptance Criteria.Compressor Replaced ML19246A580
References
LER-79-019-03L-01, LER-79-19-3L-1, NUDOCS 7907030393
Download: ML19246A580 (1)

LER-1979-019, /03L-0 on 790606:discovered That Number 11 Control Room Air Conditioning Unit Breaker Had Tripped.Caused by Windings of Compressor Motor Exceeding Resistance Acceptance Criteria.Compressor Replaced

Event date:
Report date:
3171979019R03 - NRC Website

text

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tio 61 CQCN E T NLYBER tJ5 6'J EVENT C ATE 14 75 REPCH T C ATE 80 EVENT DESCRIPTICN AND PACB ABLE CONSECLENCES h Q ! At 6:15 AM while investinating the cause for an alam (U-l 480V SG Ecuio Bkr

_j Ei] ; tricoed), it was discovered that dll Control Room air conditionira unit breaker l

E [had tripred.

1. 12 Control Room air conditionino unit remained in operation.

I j-] l Unit 2 was at 100% nower. This is not a repetitive event.

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lThe windines of #11 Control Room air conditionino ccroressor motor exceeded I

0 ii the chase to chase D.C. resistance acceptance criteria. The comoressor was l

,,, I replaced with a spare. The faulty comoressor is being shioped to a vendor 1

lfor repair. When the cause of failure is detemined durino rebuildino, it 1

3 Iwill be submitted in an update recort.

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