ML19350E614

LER 81-052/03L-0:on 810513,min Drip Rate Required for Chlorine Detectors Could Not Be Met During Surveillance Test.Probably Caused by Improper Venting of Electrolyte Reservoir & Clogged Orifice.Design Changes Initiated

ML19350E614
Person / Time
Site:	Beaver Valley
Issue date:	06/16/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19350E604	List: ML19350E603 ML19350E608 ML19350E610 ML19350E614
References
LER-81-052-03L, LER-81-52-3L, NUDOCS 8106230349
Download: ML19350E614 (2)

Text

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. E lOn 5/13/81 while at 100% power,- the minimum drip rate recuired for chlorine detectorsI l

r,mme l(CLA-VS-101A and 101C1 could not be met during the performance of a routine 19141Isurveillance test. There were no safety hazards to the operators since [CLA-VS-101A))

[7771 lwas'placed in the tripped condition as per Technical Specification 3.3.3.7. There I I

lolei lhave been twenty-one failures of the chlorine detectors to date.

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[TTTl Ehe cause of the failures is felt to be improper venting of the electrolyte reservoir l i

g land clogging of the glass orifice by minute wick particles clinging to'the i

[ electrolyte. Design changes have been made since this incident to correct this g l problem and have proved effective to date.

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Attachment To LER '81- 52/03L

. 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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