ML19351E957

LER 80-091/03L-0:on 801113,sampling of Boron Injection Tank Indicated Low Boron Concentration.After Adding 100 Lbs of Boron,High Concentration Indicated.Low Concentration Thought to Be Caused by Inleakage Through Isolation Valves

ML19351E957
Person / Time
Site:	Beaver Valley
Issue date:	12/12/1980
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19351E953	List: ML19351E952 ML19351E955 ML19351E957 ML19351E960 ML19351E962 ML19351E964
References
LER-80-091-03L, LER-80-91-3L, NUDOCS 8012190592
Download: ML19351E957 (2)

Text

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8 8 40 69 ooCR ET Nuue E 64 64 68 EVENT oATE 1. IS RE,oMToATE 40 EVENT DESCalPT10N AND PRCS ASLE CONSEQUENCES h routine sampling of the I l [d'ITI i At 1345 hnors with low power phvgics testine'in pronress, i

g i Boron Injection Tank (BIT) indicated a low boron concentration in the tank. A l

l IotaiI second sample also read low. After adding 100 pounds of boron, sarroles indicated a l l o t s j I high concentration. A dilution was benun, bringing the BIT back into specification j M i at 2010 hours0.0233 days <br />0.558 hours <br />0.00332 weeks <br />7.64805e-4 months <br />.

BVPS was in the startup mode after refueling. A steam break' l f

l lTTT] l accident would not have returned the core to a critical conditipn.

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CAUSE DESCR'PTION AND CORRECTIVE ACTIONS 27 to be due to l i o l The cause for the low boron concentration in the BIT is thought i

iTTT1 I inleakage through the isolation valves. The high reading after the addition of

, i boron is considered to be the result of insufficient recirculation of the BIT prior i l

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4 Attachment To LER 80-91/03L

Beaver Valley Power Station

, Duquesne Light Company 4

Docket No. 50-334 l

t No further information is available or needed to satisfy the reporting requirement.

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