05000334/LER-1979-006-03, /03L-0 on 790120:vital Bus Inverter 3 Failed Resulting in Loss of Voltage on Bus.Caused Reactor to Trip on False Indication of 1C Reactor Coolant Pump Breaker Opening.Failure Caused by Faulty Components in Inverter

/03L-0 on 790120:vital Bus Inverter 3 Failed Resulting in Loss of Voltage on Bus.Caused Reactor to Trip on False Indication of 1C Reactor Coolant Pump Breaker Opening.Failure Caused by Faulty Components in Inverter

ML19263C495
Person / Time
Site:	Beaver Valley
Issue date:	02/20/1979
From:	Werling J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19263C493	List: 05000334/LER-1979-006, Forwards LER 79-006/03L-0 05000334/LER-1979-006-03, /03L-0 on 790120:vital Bus Inverter 3 Failed Resulting in Loss of Voltage on Bus.Caused Reactor to Trip on False Indication of 1C Reactor Coolant Pump Breaker Opening.Failure Caused by Faulty Components in Inverter
References
LER-79-006-03L, LER-79-6-3L, NUDOCS 7902260349
Download: ML19263C495 (1)

LER-1979-006, /03L-0 on 790120:vital Bus Inverter 3 Failed Resulting in Loss of Voltage on Bus.Caused Reactor to Trip on False Indication of 1C Reactor Coolant Pump Breaker Opening.Failure Caused by Faulty Components in Inverter

Event date:
Report date:
3341979006R03 - NRC Website

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8 60 61 DOCK ET NUMS E R tdl 69 EVENT DATE 74 75 REPORT OATE 80 EVENT DESCRIPTION AND PROBACLE CONSEQUENCES h o 2 lAt 1733 hours0.0201 days <br />0.481 hours <br />0.00287 weeks <br />6.594065e-4 months <br />, No. 3 Vital Bus.nverter failed, resulting in loss of voltage on the l o 3 l bus.

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