05000368/LER-1980-080-03, /03L-0:on 801017,20,21 & 23,CEAC 2 Failed.Caused by Failure of Optical Isolator on First Three Days & Failure of Oxygen Pressure Module Card on Last Day.Optical Isolator & Oxygen Pressure Card Were Replaced

/03L-0:on 801017,20,21 & 23,CEAC 2 Failed.Caused by Failure of Optical Isolator on First Three Days & Failure of Oxygen Pressure Module Card on Last Day.Optical Isolator & Oxygen Pressure Card Were Replaced

ML20002A737
Person / Time
Site:	Arkansas Nuclear
Issue date:	11/14/1980
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20002A736	List: 05000368/LER-1980-080, Forwards LER 80-080/03L-0 05000368/LER-1980-080-03, /03L-0:on 801017,20,21 & 23,CEAC 2 Failed.Caused by Failure of Optical Isolator on First Three Days & Failure of Oxygen Pressure Module Card on Last Day.Optical Isolator & Oxygen Pressure Card Were Replaced
References
LER-80-080-03L, LER-80-80-3L, NUDOCS 8011210454
Download: ML20002A737 (1)

LER-1980-080, /03L-0:on 801017,20,21 & 23,CEAC 2 Failed.Caused by Failure of Optical Isolator on First Three Days & Failure of Oxygen Pressure Module Card on Last Day.Optical Isolator & Oxygen Pressure Card Were Replaced

Event date:
Report date:
3681980080R03 - NRC Website

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8 er 63 DoctETNuutEn ed WJ tvtNT DATE le F5 HF,oH T D AT E to EVENT DESCRIPTION AND PROSADLE CONSEQUENCES h io s a t I During Mode 1 operation while performina testina/ maintenance. CEAC #2 1

toi3i l failed on the following dates; 10-17-80, 10-20-80, 10-21-80, and i

I 10-23-80.

In all cases the alternate CEAC #1 was verified operable.

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lo isi i The CEA positions were manually monitored at_4 hour intervals.

Similar I o o I to LER's 50-368/78-020.79-004. 79-073.80-053. and 80-058.

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The OP module card was replaced.

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