ML18348A233

08/19/1976 Letter for LER 1976-026-00 Re Reportable Occurrence of Cooling Tower Basin Level Exceeding Normal Elevation During Attempt of Modified Mode of Circulating Water System Operation

ML18348A233
Person / Time
Site:	Palisades
Issue date:	08/19/1976
From:	Berry K Consumers Power Co
To:	Baker K Office of Nuclear Reactor Regulation
References
LER 1976-026-00
Download: ML18348A233 (1)

Text

VEC197Cl607)(1-031351A232)PD 08/19/76 l603 TLX CONSPOWER JKN

SUBJECT:

LICENSEE EVENT ON 8/17/76 A MODIFIED MODE OF CIRCULATIN~ WATER SYSTEM OPERATION WAS BEING ATTEMPTED. DURING THIS EXERCISE, THE COOLING TOWER BASIN LEVEL EXCEEDED NORMAL ELEVATION. T~E OPERATOR ADJUSTED THE COOLING TOWER PUMP DISCHARGE VALVE WHICH RESULTED IN EXCESSIVE

.. SF-1201 (R5-69)

AUG ?. !l 1976 WIER OVERFLOW AND THE LIMITING CONDIZUON OF OPERATION, T.S. 3.99~

CLOSED CYCLE COOLING SYSTEM THERMAL DISCHARGE LIMIT OF 5 DEGREES ""'j f;l' ~;~

F INCREASE, WAS MOMENTARILY EXCEEDED. THE MAXIMUM INSTANTANEOUS *.~*

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DELTA T WAS G.6 DEGREES F WHICH OCCURRED AT 1510. THE AVERAGED ~*1 VALVE FROM 1510 TO 1607 WAS 4.75 DEGREES F.

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THERE WAS SOME QUESTION ON REPORTING REQUIREMENTS OF THIS EVENT,

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BUT IT HAS BEEN JUDGED THAT TIME AVERAGING OVER A ONE-HOUR ~ERIOD IS NOT PERMISSIBLE, THEREFORE, THIS EVENT IS BEING REPORTED AS REQUIRED BY TECH SPECS 6e9e2/A/e THIS EVENT WILL CARRY OUR REPORT NUMBER ER-PAL-76-026 *. .* .. '*

K W BEHRY PALISADES PLANT EF-1201 (R5-69)

CONSUMERS POWER COMPANY CBW NNNN

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