05000335/LER-1981-031-03, /03L-0:on 810605,electrical Ground Occurred on 125-volt Dc Bus B.Caused by Grounded Coil in Faulty Electrohydraulic Actuator for Governor Valve.Spare Actuator Installed

/03L-0:on 810605,electrical Ground Occurred on 125-volt Dc Bus B.Caused by Grounded Coil in Faulty Electrohydraulic Actuator for Governor Valve.Spare Actuator Installed

ML20009F595
Person / Time
Site:	Saint Lucie
Issue date:	07/06/1981
From:	Moaba J FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009F594	List: 05000335/LER-1981-031, Forwards LER 81-031/03L-0 05000335/LER-1981-031-03, /03L-0:on 810605,electrical Ground Occurred on 125-volt Dc Bus B.Caused by Grounded Coil in Faulty Electrohydraulic Actuator for Governor Valve.Spare Actuator Installed
References
LER-81-031-03L, LER-81-31-3L, NUDOCS 8107310339
Download: ML20009F595 (1)

LER-1981-031, /03L-0:on 810605,electrical Ground Occurred on 125-volt Dc Bus B.Caused by Grounded Coil in Faulty Electrohydraulic Actuator for Governor Valve.Spare Actuator Installed

Event date:
Report date:
3351981031R03 - NRC Website

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aiPQR T 3dT3 40 svENT DESCRIPTiCN Aho pacs A8LE CONSECUENCs3 h l3 $:! I During normal oneration. an electrical ground occurred on the "B" 125 V I DC Bus.

Investigation of the ground revealed that it was in the control circuitry for 1C Auxiliary Feedwater Pump's turbine-driver governpr valve. The pump was declared INOPERABLE and removed from service.

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accordance with Tech Spec 3.7.1.2 the subject valve's control circuitry;

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was repaired and 1C Auxiliary Feedwater Pump was operationally tested

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and returned to service in 64 hours7.407407e-4 days <br />0.0178 hours <br />1.058201e-4 weeks <br />2.4352e-5 months <br />.

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