05000368/LER-1980-052-03, /03L-0:on 800719,during Mode 1 Operation, Containment Bldg Pressure Indicator 2PI-5603-3 Failed High. Caused by Erratic Current Repeater 2PY-5603-3B.Repeater Replaced & Pressure Indication Returned to Normal

/03L-0:on 800719,during Mode 1 Operation, Containment Bldg Pressure Indicator 2PI-5603-3 Failed High. Caused by Erratic Current Repeater 2PY-5603-3B.Repeater Replaced & Pressure Indication Returned to Normal

ML19344B157
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/15/1980
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19344B148	List: 05000368/LER-1980-051-03, /03L-0:on 800717,during Mode 1 Operation,Core a Protection Calculator Failure Alarm Was Received.Cause Not Determined.Calculator Reinitiated & All Failure Indications Returned to Normal.Bypasses Removed 05000368/LER-1980-052-03, /03L-0:on 800719,during Mode 1 Operation, Containment Bldg Pressure Indicator 2PI-5603-3 Failed High. Caused by Erratic Current Repeater 2PY-5603-3B.Repeater Replaced & Pressure Indication Returned to Normal ML19344B147
References
LER-80-052-03L, LER-80-52-3L, NUDOCS 8008250663
Download: ML19344B157 (1)

LER-1980-052, /03L-0:on 800719,during Mode 1 Operation, Containment Bldg Pressure Indicator 2PI-5603-3 Failed High. Caused by Erratic Current Repeater 2PY-5603-3B.Repeater Replaced & Pressure Indication Returned to Normal

Event date:
Report date:
3681980052R03 - NRC Website

text

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90 EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES h ITTTl I Durina Mode 1 coeration. Containment Building pressure Indicator i

i(2PI-5603-3) failed high.

The ESAF high containment pressure trips o

io n i i were bypassed on "C" PPS to preclude any trips due to the instrument i

m ireading.

This occurrence is similar '.o LER 50-368/79-014.

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CAL'5E DESCA PT,0N AND CCR AtcrivE ACTaONS g iInvestigation revealed the current repeater (2PY-5603-38) was erratic i

icausing 2PI-5603-3 to read high.

The current repeater was replaced and i

the Rx. Building pressure indication was returned to normal.

"C" PPS gi i,i3i i high building pressure was taken out of bypass.

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