ML19257A736

LER 79-097/03L-0:on 791128,during Mode 2 Operation, Containment Bldg Sump Level Indicator Found Reading 0.0%. Caused by Faulty Convertor & Power Supply Which Were Replaced.Unit Calibr & Returned to Svc

ML19257A736
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/28/1979
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19257A734	List: ML19257A733 ML19257A736
References
LER-79-097-03L, LER-79-97-3L, NUDOCS 8001070489
Download: ML19257A736 (1)

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60 64 DoCRifNvMeia 49 iviNT DAT: 74 76 HFPoM T Dati 80 EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES h o IDurina Mode 2 coeration the containment buildino sumn level indicator o I(2LI-5646-2) was discovered to be readino 0.0%. The redundant level o . indicator (2LI-5646-1) remained operable. This occurrence is similar i Ln_.u.J l to LER 50-368/79-079. Reportable oer T.S. 6.9.1.9.t. I ITTirl I f7TTI I I o e 1 l

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i o Investication revealed a faulty convertor and power supply. Power supplyi

, i and convertor were replaced. The unit was calibrated and returned to

, 2 i service within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> meeting requirements of Action Statement 3.3.3.6 4 CDI] I I

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