05000269/LER-1978-003-03, /03L-0:on 780222,Keowee Hydro Unit 2 Failed to Start.Caused by Inoperable Field Flashing Breaker.Breaker & Control Sys Insp Revealed No Abnormalities.Breaker Failed on Three Other Occasions.Cause for Breaker Failure Not Know

/03L-0:on 780222,Keowee Hydro Unit 2 Failed to Start.Caused by Inoperable Field Flashing Breaker.Breaker & Control Sys Insp Revealed No Abnormalities.Breaker Failed on Three Other Occasions.Cause for Breaker Failure Not Known

ML19308A754
Person / Time
Site:	Oconee
Issue date:	03/23/1978
From:	Ken Wilson DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19308A752	List: 05000269/LER-1978-003-03, /03L-0:on 780222,Keowee Hydro Unit 2 Failed to Start.Caused by Inoperable Field Flashing Breaker.Breaker & Control Sys Insp Revealed No Abnormalities.Breaker Failed on Three Other Occasions.Cause for Breaker Failure Not Know ML19308A751 ML19308A753
References
LER-78-003-03L, LER-78-3-3L, NUDOCS 7912110740
Download: ML19308A754 (1)

LER-1978-003, /03L-0:on 780222,Keowee Hydro Unit 2 Failed to Start.Caused by Inoperable Field Flashing Breaker.Breaker & Control Sys Insp Revealed No Abnormalities.Breaker Failed on Three Other Occasions.Cause for Breaker Failure Not Known

Event date:
Report date:
2691978003R03 - NRC Website

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.0 EVENT oESCalPTioN ANo PROS A8LE CoNSECUENCES t o i a l ! At 1750 on February 22, 1978, dur2.ng normal operation, Oconee attempted to io621tstart Keowee Hydro Unit 2 which is a source of auxillary power for the Oconee,

lo14IINuclear Station. The unit failed to start due to an inoperable field flashingt lots 1Ibreaker. The unit started on the second and on subsequent attempts.

Keowee ITTs"1 I Unit 1 and other sources of auxiliary power for the station were available if,

ITTTl I needed so that no loss of emergency power was experienced.

Thus public health; io ni and safety were not endangered.

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