ML19340D487

LER 80-101/03L-0:on 801126,control Room Chlorine Detector CLA-VS-101A Failed to Meet Operating Surveillance Requirement for Drip Rate.Caused by Clogged Detector Wick & Tank Vent Failure.Vent Filter Replaced & Wick Cleaned

ML19340D487
Person / Time
Site:	Beaver Valley
Issue date:	12/18/1980
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19340D478	List: ML19340D477 ML19340D481 ML19340D482 ML19340D484 ML19340D485 ML19340D487
References
LER-80-101-03L, LER-80-101-3L, NUDOCS 8012300686
Download: ML19340D487 (2)

Text

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U. S. NUCLEA2 REGULATCOY COMMIS540N NRC FCIA4 366 (7-771 LICENSEE EVENT REPORT (puAsg PRINT OR TYPE .sLL REQUsREO INFORMATIOM CONTRCt SLOCX: l l l l l l l@

R lP8 9l A lUCLNS&E 3 lV CCDE l S l 1 {@l 010 l- l 0 l0 l0 l0 l0 i- l010 23 l@l426 l1 uCE.NsE l1 l1 T,et 40l1 l@l l

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'* !S UGtNSE NumstR CCN'T loiil i 4 C l L J@l 0 l 5 l 0 l 0 l 0 l 3 l 3 l 4 @l 111 l 2 l 6 l 8 l 0 @l 1l 21 11 8 ed tl OOCK ET NuuSER d 60 EVENT OATE 18 IS REPORT OATE 80 EVENT DESCRIPTION AND PRC8ASLE CONSEQUENCES h i ITTTI l At 2015 hours0.0233 days <br />0.56 hours <br />0.00333 weeks <br />7.667075e-4 months <br /> with the reactor operatine at about 46 percent power, Control Room its operating siirvelliance l l o i s t i Chlorine Detector IC1.A-VS-101 A1 fa iled to meet l

[ o i, j l requirement for drip rate and was declared inoperable. The channel was placed in l o f s l I the trip condition at 2018 hours0.0234 days <br />0.561 hours <br />0.00334 weeks <br />7.67849e-4 months <br /> as required by Technical Specification 3.3.3.7.

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lo is ] l The health and safety of the public and of control room personnel was not

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[ TIT) 1 jeopardi cd since the two redundant channels were operabic and the failed channel I

t a l a 1 l was placed in a safe condition. e6 7 es SYSTEW CAUSE CAUSE COMP. VA Lv E COMPONENT CCOE st;acCDE SU8CCCE CODE CCOE SUSCCCE 10491 IA lA l h d h lX l @ lIf3lN IS lT lR lU l@ y@ [Z (@

12 18 19 20 7 8 9 to II REvtSION SEQUENTIAL oCCtJRRENCE REPORT CCOE tvPE NO.

EVENT YEA R REPORT NO.

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' ac' ASS s. "sEP'bSI' uAEr7CERER EN 7CEEN CEIi.Er **SEE" v NovRs @ *s5N*TT!E I33B }@l34 Fl@ l357.l@ Wh 3lJ0 l0 l01040l lY 43

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43 a 47 06 CAUSE DESCRIPTION AND CCRRECTIVE ACTIONS @

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l i 1911 The wick of the detector was clocced with clycerin and the electrolyte solution The wick and glass orifice f g I tank vent was malfunctioning. creating a slicht vacuum.

filter was replaced. l 1 ,2j 1 were cleaned, electro 1vte solution was added, and the vent 2210 hours0.0256 days <br />0.614 hours <br />0.00365 weeks <br />8.40905e-4 months <br /> on November 29, 1980. [

g l The channel was returned to service at f

li64i f 80 7 8 9 DISCOVERY CESCRIPTION Th %PCwtR OTHER $7ATUS 65 A

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Attachment To LER 80-101/03L B? aver 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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