ML19345G259

LER 81-022/03L-0:on 810219,w/unit in Mode 5,chlorine Detector O-CLAN-43-205A Declared Inoperable.Caused by Electrolyte Used to Drip Onto Sensor Becoming Stopped Up in Felt Filter.Filter Replaced & Detector Returned to Svc

ML19345G259
Person / Time
Site:	Sequoyah
Issue date:	03/13/1981
From:	Mcgriff J, Wilkey A TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19345G258	List: ML19345G257 ML19345G259
References
LER-81-022-03L, LER-81-22-3L, NUDOCS 8103170595
Download: ML19345G259 (1)

Text

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- ' EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h jo#2l lWith unit in mode 5, chlorine detector 0-CLAN-43-205A was declared inoperable as a i g l result of the daily channel ch'eck. The plant entered' action statement "a" of go4.l l LCO 3'.3.3.6. There'was no effect on public health or safety. One previous occurrence:

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l i j o l l The"electrdlyte used to drip onto the sensor for detecting chlorine had' b'ecome stopped

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li# l l up in the felt filter. Tlie felt filter was repl' aced, the orifice class was cleaned, a

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,,,7, l-functional tdst performed, and the detector was returned to service. The acceptable i,,3, l drip rate criteria will be made tighter to initiate maintenande before the detector .

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.g Na=e of pre:are.A.M.Wilkey/J.M.McGriff Phone (615) 842-3317 __

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