05000334/LER-1981-020-03, /03L-0:on 810209,remote Control Room Multipoint Recorder Temp Channels Declared Inoperable.Caused by Accidental Repositioing of Local Test Switch Midway Through Gaseous Waste Discharge.Switch Returned to Normal Position

/03L-0:on 810209,remote Control Room Multipoint Recorder Temp Channels Declared Inoperable.Caused by Accidental Repositioing of Local Test Switch Midway Through Gaseous Waste Discharge.Switch Returned to Normal Position

ML19347D583
Person / Time
Site:	Beaver Valley
Issue date:	03/12/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19347D582	List: 05000334/LER-1981-020, Forwards LER 81-020/03L-0 05000334/LER-1981-020-03, /03L-0:on 810209,remote Control Room Multipoint Recorder Temp Channels Declared Inoperable.Caused by Accidental Repositioing of Local Test Switch Midway Through Gaseous Waste Discharge.Switch Returned to Normal Position
References
LER-81-020-03L, LER-81-20-3L, NUDOCS 8103260707
Download: ML19347D583 (2)

LER-1981-020, /03L-0:on 810209,remote Control Room Multipoint Recorder Temp Channels Declared Inoperable.Caused by Accidental Repositioing of Local Test Switch Midway Through Gaseous Waste Discharge.Switch Returned to Normal Position

Event date:
Report date:
3341981020R03 - NRC Website

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4G EvsNT oEscRiPTicN Amo raceAsts CONsacuENcES h ITTI'T I At 1440 hours0.0167 days <br />0.4 hours <br />0.00238 weeks <br />5.4792e-4 months <br /> while at full power, temperature readines from the Meccorological I

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[777; l Tower, inconsistent with atmospheric conditions, were observed at I o 141 I multipoint recorder. The temperature channels were declared inoperable and the i o i s i i gas'eous waste discharge begun at 0620 hours0.00718 days <br />0.172 hours <br />0.00103 weeks <br />2.3591e-4 months <br /> was terminated as per Technical J -

t o is l l Specification 3.3.3.4.

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E i recorder showed that the incident had begun accreximatelv 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> earlier. The I

health and safety of the public was unaffected by this incident.

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A student had neoarentiv bumeed the switch into I g idischarge, of a local test switch.

The inoperablet y l it's calibrate position during a training session held that morning.

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Attachment To LER 81-20/03L Beaver Valley Power Station Duquesne Light Company Docket No. 50-334 At 1440 hours0.0167 days <br />0.4 hours <br />0.00238 weeks <br />5.4792e-4 months <br />, an operator observed unusual readings at the Meteorological Tower multipoint recorder located in the control room.

The discharge which was in progress was immediately terminated. An investigation into the cause for this incident revealed that a training session for new operators was being held in the Meteorological Tower shelter at the time the recorder indicates the incident began.

Instruction on the switch was not part of their training and was not repositioned as part of their training by the instructor. There is no reason to assume someone intentionally repositioned it.

The switch is at hip level and was most likely bumped into and accidentally repositioned. The indicated atmospheric conditions just before and following the incident were conducive to normal discharges with no unusual temperature variations during the outage; therefore, there was no impact on the health and safety of the public.

The Meteorological Tower temperature instruments were returned to service at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> after returning the switch to its normal position.

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