05000348/LER-1980-062-03, /03L-0:on 801017,diesel Generator Failed to Reach Rated Voltage within Tech Spec Time Limit,Voltage Could Not Be Controlled from Emergency Power Board & B1F Sequencer Step Six Was Below Setpoint.Cause Not Determined

/03L-0:on 801017,diesel Generator Failed to Reach Rated Voltage within Tech Spec Time Limit,Voltage Could Not Be Controlled from Emergency Power Board & B1F Sequencer Step Six Was Below Setpoint.Cause Not Determined

ML20002A775
Person / Time
Site:	Farley
Issue date:	11/17/1980
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20002A771	List: 05000348/LER-1980-061-01, /01T-0:on 801104,fire Protection Water Tanks a & B Fell Below Tech Spec Min Level During Flush on Unit 2 Fire Header.Caused by Equipment Operator Being Placed on Emergency Job & Missing Reading.Tanks Refilled 05000348/LER-1980-062-03, /03L-0:on 801017,diesel Generator Failed to Reach Rated Voltage within Tech Spec Time Limit,Voltage Could Not Be Controlled from Emergency Power Board & B1F Sequencer Step Six Was Below Setpoint.Cause Not Determined ML20002A770
References
LER-80-062-03L, LER-80-62-3L, NUDOCS 8011210512
Download: ML20002A775 (1)

LER-1980-062, /03L-0:on 801017,diesel Generator Failed to Reach Rated Voltage within Tech Spec Time Limit,Voltage Could Not Be Controlled from Emergency Power Board & B1F Sequencer Step Six Was Below Setpoint.Cause Not Determined

Event date:
Report date:
3481980062R03 - NRC Website

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. I o 12 j l At 091.0 on.10/17/80, while performing FNP-1-STP-28.2'(Diesel Generator 1-2A Operability j g l Test) the diesel generator failed to reach rated voltage within the Tech. Spec. time f-- g o,.,, l 11mit~of E10 seC, voltage coold not. be controlled from the Emergency Power Board (EPB),

g land B1F' sequencer step 6 was below Tech. Spec. 3.8.1.1 setpoint. Tech. Spec. 3.8.1.1 lol6l l requij"J'3, tWo separate and independent diesel generator sets o be operable. Tech. Spec.

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CAUSE CESCRIPTION AND CORRECTIVE ACTIONS l t t o I l The voltage regulator was looked at to determine the cause. No indication for the loss g lof. voltage control could be determined. The diesel was restarted and control of the

.,,,7, l voltage was confirmed. The B1F step 6 agastat relay time setpoint had drifted below

,_,,,3, [ the Tech. Spec setpoint. The agastat relay was adjusted and D.G. 1,2A was r.eturned '

,,,,,, l to service at 1600 on 10/17/80 after successful completion of.FNP-1-STP-28.2.

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