05000334/LER-1980-101-03, /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

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/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:
References
LER-80-101-03L, LER-80-101-3L, NUDOCS 8012300686
Download: ML19340D487 (2)
v • d • e


LER-1980-101, /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
Event date:
Report date:
3341980101R03 - NRC Website
v • d • e

text

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U. S. NUCLEA2 REGULATCOY COMMIS540N NRC FCIA4 366 (7-771 LICENSEE EVENT REPORT CONTRCt SLOCX: l l

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(puAsg PRINT OR TYPE.sLL REQUsREO INFORMATIOM R lP l A l 3 lV l S l 1 {@l 010 l-l 0 l0 l0 l0 l0 i-l010 l@l4 l1 l1 l1 l1 l@l l

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!S UGtNSE NumstR 23 26 uCE.NsE T,et 40 SP CAf $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 CCN'T loiil ed tl OOCK ET NuuSER d

60 EVENT OATE 18 IS REPORT OATE 80 i

4 EVENT DESCRIPTION AND PRC8ASLE CONSEQUENCES h 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 i

its operating siirvelliance l

l o i s t i Chlorine Detector IC1.A-VS-101 A1 fa iled to meet

[ o i, j l requirement for drip rate and was declared inoperable. The channel was placed in l

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.

l o f s l I the trip condition at i

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

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

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I t a l a 1 l was placed in a safe condition.

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es COMP.

VA Lv E SYSTEW

CAUSE

CAUSE CODE CCOE SUSCCCE COMPONENT CCOE st;acCDE SU8CCCE 10491 IA lA l h d h lX l @ lI lN IS lT lR lU l@ y@ [Z (@

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9 to II 12 f3 18 19 20 SEQUENTIAL oCCtJRRENCE REPORT REvtSION LE RrRO EVENT YEA R REPORT NO.

CCOE tvPE NO.

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26 27 IS 29 JG 31 32

,u, EN 7CEEN CEIi.Er

    • SEE" NovRs @ *s5N*TT!E ac' ASS s. "sEP'bSI' uAEr7CERER I B }@l Fl@

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40 43 42 43 a

47 CAUSE DESCRIPTION AND CCRRECTIVE ACTIONS @

l i 1911 The wick of the detector was clocced with clycerin and the electrolyte solution

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The wick and glass orifice f g I tank vent was malfunctioning. creating a slicht vacuum.

filter was replaced.

l 1 were cleaned, electro 1vte solution was added, and the vent 1

,2j 2210 hours0.0256 days <br />0.614 hours <br />0.00365 weeks <br />8.40905e-4 months <br /> on November 29, 1980.

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g l The channel was returned to service at f

li64i f 80 7

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%PCwtR OTHER $7ATUS 65 A

DISCOVERY CESCRIPTION

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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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