ML19312C237

LER 78-007/03L-0:on 780314,Unit 2 Failed to Start.Caused by Field Flashing Breaker Failure.Breaker Failed Four Times Previously.Cause of Breaker Failure Not Determined. Monitoring & Investigation Will Continue

ML19312C237
Person / Time
Site:	Oconee
Issue date:	04/21/1978
From:	Ken Wilson DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19312C235	List: ML19312C234 ML19312C236 ML19312C237 ML19312C238
References
LER-78-007-03L, LER-78-7-3L, NUDOCS 7912110626
Download: ML19312C237 (1)

Text

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EVENT cESCalPTICN ANo pro 848LE CoNsECUENCES Q10 Lo_uj l At 0630 on March 14, 1978, during normal operation, Oconee attempted to ,

gl start Keowee Hydro Unit 2 which is a source of auxiliary power for the ,

El Oconee Nuclear Station. The unit f ailed to start due to an it. operable ,

fTTs 1 l field flashing breaker. The unit was started without incident after an ml investi2ation had been completed. Keowee Unit 1 and other sources of ,

o i I auxiliary power for the station were available if needed so that no loss i 3 ia i I of emergency power was experienced. Thus public health and safety were not [

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LL,tj i been no determination of cause, as yet. Until the cause has been pinpointed,,

mI the appropriate corrective action will be continued monitoring and investi- ,

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