ML19312C238

LER 78-009/03L-0:on 780322,Unit 2 Failed to Start.Caused by Field Flashing Breaker Failure.Breaker Failed on Five Previous Occasions.No Cause for Breaker Failure Found. Monitoring & Investigation Will Continue

ML19312C238
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-78-009-03L, LER-78-9-3L, NUDOCS 7912110629
Download: ML19312C238 (2)

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ITTTl i At 0721 on March 22, 1978. during normal operation, Oconee attempted to l ITTTl l start Keowee liydro Unit 2 which is a source of auxiliary power for the  ;

io 1 1 l Oconee Nuclear Station. The unit failed to start due to an inoperable g ITTsl 1 field flashing breaker. The unit was started without incident after an  ;

[Tri-l l investigation had been completed. Keowee Unit 1 and other sources of ,

g[ auxiliary power for the statio:. were available if needed so that no loss io !e**

1 I of emereency power was experienced. Thes niiblic health and safety were not I endangered. "

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OCONEE MRC/0IE FXINCIPAL INSPECTOR DUKE POWER (XMPANT OCONE NUCLEAR STATION NBC MDTITICATION OF REPORIABLE OCCURRENCE mEPonT wannEm 8-7M TIxE/DATE Or InCIDEwr d d e ,w TIx1/DATE or oIsCovrar Abus >>-/V UNIT (S) / 2. 'T UNIT ST*%US AT TIME or INCIDerr[/-M N 6Y8 M DESCRIPTION OF INCIDENT: NN #5 G INIA /het/ / M 4. EM h b m k ecease on dachain of Acnu. ndl&& FeeJ ,

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BC'4 INCIDENT WAS DIScov1 RED: 8!W dl$M_ $2 6 r 457' S[5 AhMM/  !

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IEPORTABLE PURSUANT 10 TECENICAL SPECIFICATION d. [. /. /[k)

DATE REPORT DUE TO MRC/01E 9"R "[

j TIME /DATE TELEC0FIED DE UIRERWISE TRAN3HIITED TO NRC/01E /ifdoh "/2 -/[

PREPARED BY M. bnM PacgE ( 3) 832 5363

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