ML19305C370

LER 80-013/04T-0:on 800302,during Maint Surveillance,Cooling Tower Blowdown Temp Indicator Found Out of Calibr.Caused by Instrument Drift.Instrument Recalibr

ML19305C370
Person / Time
Site:	Beaver Valley
Issue date:	03/20/1980
From:	Werling J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19305C367	List: ML19305C366 ML19305C370
References
LER-80-013-04T, LER-80-13-4T, NUDOCS 8003260624
Download: ML19305C370 (1)

Text

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U. S. NUCLL An HEGUL ATORY COMMISSloN y,XC FChM 343

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lo l; j l While performine a maintenance surveillance procedure on Cooline Tower Blowdown of

[o # 3 ; [ Temperature Indicator [T-CW-101), the instrument was found to be out l l

In!AlI calibration (hich). The instrument was immediate1v ca librated. There were no 1

lo1+1 i environmental implications because the previous surveillance test was performed on I

[FTTI i 10/19/79 lind , since that time. the plant river water blowdown temperature never l

lo l-l l increased above 75F.

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4J 44 47 JJ Je 33 CAUSE DESCRIPTION ANO CCARECTIVE ACTIONS drift. [

l3 !2; l The cause of the out-of-calibration condition is attributed to instrument g,3.,l The instrument was immediately calibrated using the appropriate maintenance  ;

p T ' I surveillance procedure. No previous failures of this instrument due to instrument l g] drift have been experienced.

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