05000348/LER-1979-067-03, /03L-0:on 791222,river Water Train Pumps Declared Inoperable Due to Faulty Level Switch Q5P25L5510. Caused by Moisture Entering Switch,Making Operation Erratic. Replaced Switch.Corrective Action Being Evaluated

/03L-0:on 791222,river Water Train Pumps Declared Inoperable Due to Faulty Level Switch Q5P25L5510. Caused by Moisture Entering Switch,Making Operation Erratic. Replaced Switch.Corrective Action Being Evaluated

ML19257D485
Person / Time
Site:	Farley
Issue date:	01/25/1980
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19257D482	List: 05000348/LER-1979-067, Forwards LER 79-067/03L-0 05000348/LER-1979-067-03, /03L-0:on 791222,river Water Train Pumps Declared Inoperable Due to Faulty Level Switch Q5P25L5510. Caused by Moisture Entering Switch,Making Operation Erratic. Replaced Switch.Corrective Action Being Evaluated
References
LER-79-067-03L, LER-79-67-3L, NUDOCS 8002040469
Download: ML19257D485 (1)

LER-1979-067, /03L-0:on 791222,river Water Train Pumps Declared Inoperable Due to Faulty Level Switch Q5P25L5510. Caused by Moisture Entering Switch,Making Operation Erratic. Replaced Switch.Corrective Action Being Evaluated

Event date:
Report date:
3481979067R03 - NRC Website

text

?N LICENSEE EVENT REPORT CGN s HOL BLOCK: l l

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l l lh (PLEASE PRINT OR TYPE ALL REOUIRED INFORMATIOPH t

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8 60 El DOCK E T NUMBE R NI 69 EVENT OATE 74 35 REPOR T O ATE 60 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h F6Ti'l i At 0850 on 12-22-79, the River Water B train pumps were declared inoperable due to a

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l f aulty level switch (Q5P25L5510). Tech. Spec. 3.7.5 requires both R.W.

loops to be g

o 3 l operable. Tech Spec. 3.7.5 action statement requirements were met.

The pumps were g

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pg p;;-) l returned to service at 1942 on 12-22 79.

A similar occurence was reported in LER 79-g

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g041/03L-0. The health / safety of the public were not affected.

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CAUSE

CAUSE COMP.

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33 J4 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CCRRECTIVE ACTIONS gg l Moisture had entered the switch thereby making its operation erratic ie. R.W. pumps y

fiTi 1 1 4 and 5 would spuriously trip.

The switch was replaced. Corrective action to prevent ;

l moisture entry into the switch is being evaluated. A revision to this LER will be l submitted.

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% POWE R oTH E R STATUS IS V RY DISCOVERY OESCRIPTION y J @ l1l0l0l@l NA l

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8 9 11 12 80 LOSS OF CR CAMAGE TO FACILITY Q TYPE C E SCRIP TION v

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