05000334/LER-1979-037-03, /03L-0:on 790921,during Surveillance Test of Battery 1,cell 6 Indicated Voltage Decrease of More than 0.05 Volts from Value of Original Acceptance Test.Cause Not Stated.Cell 6 Replaced

/03L-0:on 790921,during Surveillance Test of Battery 1,cell 6 Indicated Voltage Decrease of More than 0.05 Volts from Value of Original Acceptance Test.Cause Not Stated.Cell 6 Replaced

ML19254D346
Person / Time
Site:	Beaver Valley
Issue date:	10/19/1979
From:	Werling J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19254D340	List: 05000334/LER-1979-037, Forwards LER 79-037/03L-0 05000334/LER-1979-037-03, /03L-0:on 790921,during Surveillance Test of Battery 1,cell 6 Indicated Voltage Decrease of More than 0.05 Volts from Value of Original Acceptance Test.Cause Not Stated.Cell 6 Replaced
References
LER-79-037-03L, LER-79-37-3L, NUDOCS 7910250372
Download: ML19254D346 (1)

LER-1979-037, /03L-0:on 790921,during Surveillance Test of Battery 1,cell 6 Indicated Voltage Decrease of More than 0.05 Volts from Value of Original Acceptance Test.Cause Not Stated.Cell 6 Replaced

Event date:
Report date:
3341979037R03 - NRC Website

text

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LICENSEE EVENT REPORT -

CONTROL BLOCK:

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8 60 60 00CA ET NUM8ER bd 69 EVENT DATE 14 73 REPORT C ATE 80 EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h o

2 l During performance of No. 1 Battery surveillance test, Cell No. 6 indicated a voltage l

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acceptance test.

Overall battery voltage was greater than the required minimum. The l

l specific gravity of the cell is within limits and the voltage of the cell is above l

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l the required minimum.

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[_ Cell No. 6 is no longer able to maintain its voltane within the arolicable technic,1 l

l specification limit. The cell was disconnected frOm Battery No. I and the overall l

i l battery voltage was then verified to 3e greater than required by technical l

l specifications. A new cell will be installed to replace Cell No. 6.

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