ML19275A286

LER 79-079/03L-0:on 790904,containment Bldg Sump Level Indicator Was Inoperable.Caused by Loss of Power Due to Power Supply Being Inadvertently Switched Off.Power Supply Was re-energized within 13-h & Caution Cord Attached

ML19275A286
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/26/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19275A279	List: ML19275A278 ML19275A285 ML19275A286
References
LER-79-079-03L, LER-79-79-3L, NUDOCS 7910030469
Download: ML19275A286 (1)

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to 6' DOCngTNuwega 6e S3 (VENT DATE 18 PS HF POR T O A ' 80 EVENT DESCRIPTION AND PA00 ABLE CONSEQUENCES h ITiTi' I During Node 1 operation, post-accident monitoring instrument. containmenti gI building sump level indicator, 2LI-5645-1 was inoperable. The redundant i lo I AI containment sump level indicator was operable. There_were no similar I n s occurrences Reportable per T.S.6.9.1.9b.

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li j o i i False indication caused by loss of power due to power supply being i ii iij inadvertently switched off. Power supply for level indicator was i i 2 1 reenerei: ed within 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br />, meetine requirements of Action statement I m T.S.3.3.3.6 a. Switch has been permanently labeled with a ' caution card'!

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