05000219/LER-1982-025

LER 82-025/01T-0:on 820506,reactor Triple Low Sensor RE18D Not Jumped to Provide Simulated Trip Signal to Auto Depressurization Sys Logic During Circuitry Repair.Failure Realized After Repairs Completed.No Corrective Action Taken

ML20054K452
Person / Time
Site:	Oyster Creek
Issue date:	06/07/1982
From:	Harkleroad R GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20054K449	List: 05000219/LER-1982-025, Forwards LER 82-025/01T-0.Detailed Event Analysis Encl
References
LER-82-025-01T, LER-82-25-1T, NUDOCS 8207020149
Download: ML20054K452 (1)

LER-2082-025,

Event date:
Report date:
2192082025R00 - NRC Website

text

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N6POAT OAT 6 i 8 4e el DOCEET8euts86R EVENT DESCRIPTION AND PROSASLE CONSEQUENCES h m i Durinc7 a, approx. 9 hour1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> repair of circuitrv for reactor triple low t

, sensor RE18D, the sensor was not junpered to provide a simulated trip ,

@l sirinal to ADS. RE18D is 1 of 4 sensors. This event is reportable per i Tech Specs, para. 6.9.2.a.2. Since both redundant sensors in the other ,

mi 1"5Tc 1 I t-rin ohnnnel as well as tho redinvinnt sensor in the affected trip t gI channel were operable the safety significance was minimized. Repair was '

,,,,,,i required due to corrosion of wire at an in-line splice. ,

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i i ., i l The requirement to institute a simulated trip into ADS was not realized _

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at the time RE18D was out of service for repair. No immediate corrective ,

. , i action was taken because the failure to institute the simulated trip was ,

L' 11 ! I realized after the fact. Similar splices in safety-related installations ,

will be replaced by continuous wire during the next refueling outage. ,

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