05000348/LER-1981-041-03, /03L-0:on 810606,diesel Generator Found Incapable of Automatically Starting Due to locked-in Low Lube Oil Pressure Alarm.Caused by Inadequate Procedural Guidance. Procedures Revised

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/03L-0:on 810606,diesel Generator Found Incapable of Automatically Starting Due to locked-in Low Lube Oil Pressure Alarm.Caused by Inadequate Procedural Guidance. Procedures Revised
ML20009F910
Person / Time
Site: Farley Southern Nuclear icon.png
Issue date: 07/01/1981
From: Hairston W
ALABAMA POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009F907 List:
References
LER-81-041-03L, LER-81-41-3L, NUDOCS 8108030157
Download: ML20009F910 (2)
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LER-1981-041, /03L-0:on 810606,diesel Generator Found Incapable of Automatically Starting Due to locked-in Low Lube Oil Pressure Alarm.Caused by Inadequate Procedural Guidance. Procedures Revised
Event date:
Report date:
3481981041R03 - NRC Website
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60 el CCCKET NUMg ER 68 69 EVENT QATE 74 75 REPORT QATE 80 EVENT DESCRIPTION AND PROBABLE CONSECUENCES h Io i2l l At approximatelv 0000 on 6/6/81. Diesel Genera tor 1C wa's declared inoperable when it was l l discovered that the DC was not capable of automatically starting due to a " locked in" l

>o;3l l o 14 l l low lube oil pressure alarm. Tech. Spec. 3.8.1.1, in part, requires DG IC to be operable.l l o ! s i l Tech. Spec. 3.8.1.1 action statement requirements were met.

Health / safety of the' public l gois; ;was not affected.

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42 4s 44 47 CAUSE CESCRIPTION AND CCRRECTIVE ACTICNS h j i i o l l The event was caused by inadequate procedural guidance. The procedure did not provide i,,ij j caution or guidance statements for running the auxiliary jacket water pump with the i

,,,,,; diesel generator shutdown. When the pump was started at approximately 1500 on 6/5/81' i; i } 3 g l (DG IC was not running), the jacket water pressure increased which resulted in an i;4 i l " engine running" signal being generated. This, in turn, armed the engine protective 7

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, pg LER 81-041/03L-0 Cause Description and Corrective Actions shutdown circuits which resulted in a lov lube oil trip being " locked in".

These alarms were not evident in th: Main Control Room due to faulty alaru circuitry which was being repaired at the time.

Procedures have been revised in order to prevent recurrence of this event. The low lube oil pressure alarm was reset and diesel generator 1C was returned to service at approximately 0001 on 6/6/81. The Main Control Room alarms have been repaired.

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