05000324/LER-1981-067-03, /03L-0:on 810714,control Operator Discovered That Drywell Equipment Drain Flow Integrator Was Continually Counting W/No Pumps Running.Caused by Instrument Drift. Integrator Recalibr & Signal Response Checked

/03L-0:on 810714,control Operator Discovered That Drywell Equipment Drain Flow Integrator Was Continually Counting W/No Pumps Running.Caused by Instrument Drift. Integrator Recalibr & Signal Response Checked

ML20009G400
Person / Time
Site:	Brunswick
Issue date:	07/22/1981
From:	CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009G395	List: 05000324/LER-1981-067, Forwards LER 81-067/03L-0 05000324/LER-1981-067-03, /03L-0:on 810714,control Operator Discovered That Drywell Equipment Drain Flow Integrator Was Continually Counting W/No Pumps Running.Caused by Instrument Drift. Integrator Recalibr & Signal Response Checked
References
LER-81-067-03L, LER-81-67-3L, NUDOCS 8108040213
Download: ML20009G400 (1)

LER-1981-067, /03L-0:on 810714,control Operator Discovered That Drywell Equipment Drain Flow Integrator Was Continually Counting W/No Pumps Running.Caused by Instrument Drift. Integrator Recalibr & Signal Response Checked

Event date:
Report date:
3241981067R03 - NRC Website

text

NHC FoRNI 366 U. S. NUCLE AR REGULATORY COMMISSION 17 17)"

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COwT 68 69 EVENT DATE 74 75 REPORT DATE 80

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tl 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h Iol2l l During normal plant surveillance, the control operator discovered that the drywell I

l l o l a t [ equipment drain flow integrator. 2-G16-fQ-K603, was continuously counting with no Io14l l pumps running. This event did not affe;9t the health and safety of the public.

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33 J4 35 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h jiIoIl Instrument drif t of the integrator, Model No. 561, caused this event.

The integratorj li lil I was calibrated and wac returned to service.

In addition, the signal response of the l integrator flow recorder, 2-G16-FY-K602, was checked with no prob 1 cms found.

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imI t I i l 31 l check of plant documentation showed this is an isolated event; therefore, no further l l

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