ML19260E002

LER 80-002/03L-0:on 800109,while Taking Control Room Log Readings,Day Tank Level for Diesel Generator 1C Found to Be Approx 605 Gallons,Below Tech Spec Limit.Caused by Defective Switch on Transfer Pump.Switch Repaired

ML19260E002
Person / Time
Site:	Farley
Issue date:	02/07/1980
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19260D998	List: ML19260D997 ML19260E002 ML19260E005
References
LER-80-002-03L, LER-80-2-3L, NUDOCS 8002120725
Download: ML19260E002 (2)

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LICEr:1EE EVENT REPORT '

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EVENT DESCn PirC.N AP43 PRO 9 ABLE CONS 2CUI';CES h m [ At 0030 on 1/9/80 while taking Control Room Log readings, the day tank level for IC g

, p l Diesel Generator was found to be approximately 605 gallons. Tech. Spec. 3.8.1.1 g n , l requires the day tank to have a minimum of 700 gallons. Tech. Spec. 3.8.1.1 action g o,,, , statements were met. The health and safety of the public were not affected. g o is  ! I o 7 I I 34311 I T d 9 "

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LER 80-002/03L-0 CAUSE DESCRIPTION AND CORRECTIVE ACTION Upon investigation it was determined that the level in the day tank had been depleted during a one hour run between 1540 and 1640 on 1-8-80.

At the time of the incident the fuel oil transfer pump was being operated in the manual = ode due to a defective level switch that controls the pump in." Auto".. The setpoints for the low level alarms (not Low-Level Auto Start) on the day tank are presently below the Tech. Spec. limits.

After the day tank lecel was discovered to be below Tech. Spec. limits, the tank was immediately filled to a level above Tech. Spec. limits.

IC Diesel Generator was returned to service at 0100 on 1-9-80.

The level switch was repaired, the auto-start feature verified, and the transfer pump returned to the " Auto" mode. In an effort to further reduce the probability :f a recurrence, a design change is being submitted

, , to change the level alarm setpoints to a point above the Tech. Spec. limit.

This occurrence will 're discussed in Operator Retraining.

1952 049