05000316/LER-1982-101-03, /03L-0:on 821124,discovered Time Delay of Two Automatic Load Sequence Relay Timers Not Repeatable & Timers Exceeded Allowed Tolerance.Caused by Toggle Switch Assemblies Being Out of Alignment.Assemblies Replaced

/03L-0:on 821124,discovered Time Delay of Two Automatic Load Sequence Relay Timers Not Repeatable & Timers Exceeded Allowed Tolerance.Caused by Toggle Switch Assemblies Being Out of Alignment.Assemblies Replaced

ML20028C286
Person / Time
Site:	Cook
Issue date:	12/22/1982
From:	Palmer R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028C263	List: 05000316/LER-1982-097-03, /03L-0:on 821204,fire Detection Sys Alarm for 4 Kv Switchgear Room Received Due to Pyralarm Detector Alarming for No Apparent Reason.Caused by Low Setpoint.New Detector Installed 05000316/LER-1982-098-03, /03L-0:on 821127,fire Detection Sys Alarm for 4 Kv Switchgear Room Received Due to Pyralarm Detector Alarming. Caused by Low Alarm Setpoint.Pyralarm Replaced 05000316/LER-1982-099-03, /03L-0:on 821123,during Surveillance Test on Automatic Load Sequence Timing Relays,Four ESF Timers Found to Exceed Allowed Tolerance.Caused by Instrument Drift. Timers Readjusted & Solid State Relays Under Review 05000316/LER-1982-100-03, /03L-0:on 821130,during Surveillance Test on Diesel Generator Load Shedding Relays,Six 4 Kv Loss of Voltage Relays Exceeded Allowed Tolerance.Caused by Instrument Drift.Undervoltage Relay Under Study 05000316/LER-1982-101-03, /03L-0:on 821124,discovered Time Delay of Two Automatic Load Sequence Relay Timers Not Repeatable & Timers Exceeded Allowed Tolerance.Caused by Toggle Switch Assemblies Being Out of Alignment.Assemblies Replaced ML20028C262
References
LER-82-101-03L, LER-82-101-3L, NUDOCS 8301070296
Download: ML20028C286 (1)

LER-1982-101, /03L-0:on 821124,discovered Time Delay of Two Automatic Load Sequence Relay Timers Not Repeatable & Timers Exceeded Allowed Tolerance.Caused by Toggle Switch Assemblies Being Out of Alignment.Assemblies Replaced

Event date:
Report date:
3161982101R03 - NRC Website

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! O I 21 l DURING A SURVEILLANCE TEST ON THE AUTOMATIC LOAD SEQUENCE TIMING RELAYS, IT WAS DIS-t iO,3; I COVERED THAT THE TIME DELAY OF TWO RELAY TIMERS WAS NOT REPEATABLE AND THEY EXCEEDED g

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