05000324/LER-1981-051-03, /03L-0:on 810608,during Operability Testing,When Manual Start Was Initiated,Diesel Generator 4 Started & Then Stopped.Caused by Moisture in Run Control Solenoid Valve, Model X53-HM-2150.Moisture Removed

/03L-0:on 810608,during Operability Testing,When Manual Start Was Initiated,Diesel Generator 4 Started & Then Stopped.Caused by Moisture in Run Control Solenoid Valve, Model X53-HM-2150.Moisture Removed

ML20009F887
Person / Time
Site:	Brunswick
Issue date:	06/25/1981
From:	Pastva M CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009F885	List: 05000324/LER-1981-051, Forwards LER 81-051/03L-0 05000324/LER-1981-051-03, /03L-0:on 810608,during Operability Testing,When Manual Start Was Initiated,Diesel Generator 4 Started & Then Stopped.Caused by Moisture in Run Control Solenoid Valve, Model X53-HM-2150.Moisture Removed
References
LER-81-051-03L-01, LER-81-51-3L-1, NUDOCS 8108030138
Download: ML20009F887 (2)

LER-1981-051, /03L-0:on 810608,during Operability Testing,When Manual Start Was Initiated,Diesel Generator 4 Started & Then Stopped.Caused by Moisture in Run Control Solenoid Valve, Model X53-HM-2150.Moisture Removed

Event date:
Report date:
3241981051R03 - NRC Website

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LICENSEE EVENT REPORT 8

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60 61 DOCKET NUM8ER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lol2l l During the performance of an operability test on No. 4 diesel generator, when a l

l manual start was initiated, the diesel momentarily started, then stopped.

No. 4 l

lo lal l o 141 l diesel generator was then declared inoperable in accordance with technical specifica-l 1

t,o I s I l tions. At the time of this event, the other remaining diesel generators were operablej h l61 l This event did not affect the health and safety of the public.

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33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS I i l o l l Moisture buildup in the diesel Run Control Solenoid Valve (RSV), model No. X53-HM-l I i l i I l 2150. prevented its opening and allowed the diesel fuel racks to remain locked in i

I i i 21 l the OFF position when the diesel was started.

Tha moisture was removed; the diesel l

lil3l l was satisfactorily tested. A check of the other diesels' RSV's revealed no moisture l 1i I4 l l problems and, as there is no history of similar events, thic is an isolated event.

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% POWER OTHER STATUS Ot O RY DISCOVERY DESCRIPTION l1 l5 l l F l@ l0 l1 l7 l@l N/A l

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8 9 10 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE

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,ERSO~~E L iNauWiES NUM8ER

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7 8 9 11 12 80 LOS$ OF OR DAMAGE TO FACILITY TYPE

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LER ATTACHMENT - RO #2-81-51 Facility: BSEP Unit No. 2 Event Date: 6-8-81 This event occurred because a moisture buildup in the valve plunger of the diesel Run Control Solenoid Valve (RSV) prevented the valve from opening. As a result this prevented admission of control air to diesel right and left run/stop cylinders causing the diesel fuel racks to remain locked in the OFF position when the diesel was started. The RSV was cleaned, inspected and reinstalled functioning properly. The diesel was then started, satisfactorily tested and returned to service.

An inspection of the system moisture trap and the filter-dryer revealed no problems with these components. These components were also observed during operation with no problems noted.

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