ML18043A243

LER 78-032/01T-0:on 781019,during Monthly Sampling of SI Tanks,Boron Concentrations in Tanks B & D Were 1,703 & 1655 Ppm,Respectively.Caused by Dilution of SI Tank Contents from Water Left in Shutdown Cooling Lines After Shutdown

ML18043A243
Person / Time
Site:	Palisades
Issue date:	11/02/1978
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18043A241	List: ML18043A239 ML18043A243
References
LER-78-032-01T, LER-78-32-1T, NUDOCS 7811070218
Download: ML18043A243 (1)

Text

PALISADES

.NRC FORM 366 U.S. NUCLEAfl REGULATORY COMMISSION (7-77)

LICENSEE EVENT REPORT CONTROL BLOCK: ,_I_ . _ _ _ , _ _ _ ._ _,___,___.j 0) (PLEASE PRINT OR TYPE ALL REQUIRED INf'ORMATiONl l 6

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!During monthly sampling of SI tanks, the boron concentrations of SI tanks J

@TI] I B and D were found to be 1703 ppm and 1655 ppm respectively. The samples

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1 were taken on 10-18-78 and 10-19-78. Problem was corrected by draining (ill] I and refilling the SI tanks from the SIRW tank. See LER 77..,33. Event

[]I[) Lhad no effect on public health or safety.

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o:IIl l_!{eduction in boron coneentration was caused by dilution of SI tank contents ITIIJ Lfrom water left in the shutdown cooling.:lines after plant shutdown and 1 ITTIJ I cooldowno This water is used as make-up to the SI tank after sampling.,

rr.pJ I Procedure revisions which will a,ssure flushing of the shutdown cooling IJJI] I lines prior to their being used as SI ta:nk make-up .

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