ML20085E480

Telecopy RO ER-PAL-76-026:on 760817,cooling Tower Basin Level Exceeded Normal Elevation During Attempted Modified Mode of Circulating Water Sys Operation

ML20085E480
Person / Time
Site:	Palisades
Issue date:	08/19/1976
From:	Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20085E478	List: ML20085E476 ML20085E480
References
NUDOCS 8308120251
Download: ML20085E480 (1)

Text

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SUBJECT:

LICENSEE EVENT REPORT bfE62 Ar.L __

c ON 8/17/76 A MODIFIED MODE OF CIRCULATING WATER SYSTEM OPERATION WAS BEING ATTEMPTED. DURING THIS EXERCISE, THE COOLING TOWER l B ASIN LEVEL EXCEEDED NORMAL ELEVATION. THE OPERATOR ADJUSTED THE COOLING TOWER PUMP DISCHARGE VALVE WHICH RESULTED IN EXCESSIVE sr.mi(as.a>

AUG '> f 1976 WIER OVERFLOW AND THE LIMITING CONDIZUON OF OPERATION, T.S. 3.99, ,

CLOSED CYCLE COOLING SYSTEM THERMAL DISCHARGE LIMIT OF 5 DEGREES U F INCREASE, WAS MOMENTARILY EXCEEDED. THE MAXIMUM INSTANIANEOUS del.TA T WAS 6.6 DEGREES F WHICH OCCURRED AT 15io. THE AVERAGED VALVE FROM 1510 TO 1607 WAS 4.75 DEGREES F.

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THERE WA9 SOME QUESTION ON REPORTING REQUIREMENTS OF THIS EVENT, BUT IT HAS BEEN JUDGED THAT TIME AVERAGING OVER A ONE-HOUR PERIOD IS NOT PERMISSIBLE, THEREFORE, THIS EVENT IS BEING REPORTED AS REQUIhED BY TECH SPECS 6.9.2/A/. THIS EVENT WILL CARRY OUR REPORT NUMBER ER-PAL-76-026.

K W BERRY

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