05000334/LER-1981-035-03, /03L-0:on 810415,all Three Chlorine Detectors Failed to Meet Min Electrolyte Drip Rate Criteria Specified in Surveillance Test.Caused by Flow of Electrolyte Being Blocked.Wicks Replaced & Glass Orifices Cleaned

/03L-0:on 810415,all Three Chlorine Detectors Failed to Meet Min Electrolyte Drip Rate Criteria Specified in Surveillance Test.Caused by Flow of Electrolyte Being Blocked.Wicks Replaced & Glass Orifices Cleaned

ML19345H403
Person / Time
Site:	Beaver Valley
Issue date:	05/14/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19345H401	List: 05000334/LER-1981-035, Forwards LER 81-035/03L-0 05000334/LER-1981-035-03, /03L-0:on 810415,all Three Chlorine Detectors Failed to Meet Min Electrolyte Drip Rate Criteria Specified in Surveillance Test.Caused by Flow of Electrolyte Being Blocked.Wicks Replaced & Glass Orifices Cleaned
References
LER-81-035-03L, LER-81-35-3L, NUDOCS 8105200243
Download: ML19345H403 (2)

LER-1981-035, /03L-0:on 810415,all Three Chlorine Detectors Failed to Meet Min Electrolyte Drip Rate Criteria Specified in Surveillance Test.Caused by Flow of Electrolyte Being Blocked.Wicks Replaced & Glass Orifices Cleaned

Event date:
Report date:
3341981035R03 - NRC Website

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CONTRCI. 5 LOCK: l l

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l (PLEA $1 P*lNT OR TYPE ALL GEQUIRED INFORMAftCN!

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a EVENT DESCalPTION AND P9CS ASLE CCNSECUENCES hat 56*. reactor power, all three g g, l On 4/15/81 with the plant l

the minimum electrolvte drip rate criteria specified in their surveillance

[ o t a l I to meet j

At 2233 hours0.0258 days <br />0.62 hours <br />0.00369 weeks <br />8.496565e-4 months <br /> all three detectors were declared inocerable and the Control [otalI test.

I lo is J l Room ventilation system was olaced on full recirculation flow as per Technical i

lo !s l i Snecific, tion 3.3.3.7 This is the sixteenth reeerted evant involvinz the chlorine I l

is)7)I detectors.

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8 9 SYSTEM

CAUSE

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CAcSE CESCAPr1CN AND COAAECTIVE AC'!CNS h li lo j 1 The chlorine detectors were restored to service on 4/16/S1 by replacing the wicks l

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li6ii 1 and cleanine the class orifices which had blocked the flow of electrolvte.

I, # 21 ] corrective actions include substitutine distilled for demineralized water in the

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li l 3 t l electro 1vte solution, as recommended by the vendor, and additional trainine o I

64tI cersonnel on procer reservoir filline crocedures.

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. i Attachment To LER 81-35/03L i

Beaver Valley Power Station Duquesne Light Company Docket No. 50-334 No further information is available or needed to satisfy the reporting requirement.

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