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Forwards LERs 78-085/03X-1,78-089/03X-1,78-094/03X-1, 78-097/03X-1,78-111/03X-1,78-120/03X-1,80-004/03X-1 & 80-015/03X-1.

Accession Number: ML17275B377

Date Released: Friday, January 24, 2020

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• ML17275B376 - Forwards LERs 78-085/03X-1,78-089/03X-1,78-094/03X-1, 78-097/03X-1,78-111/03X-1,78-120/03X-1,80-004/03X-1 & 80-015/03X-1. (2 page(s), 8/4/1981)
• ML20010B493 - LER 78-085/03X-1:on 780720,containment vessel post-accident radiation monitor RE 5029 declared inoperable.Caused by component failure.Motor pulley replaced & belt installed. Surveillance test completed. (2 page(s), 8/4/1981)
• ML20010B495 - LER 78-089/03X-1:on 780809,pump for post-accident radiation monitor RE 5030 found inoperable.Caused by component failure of motor.Motor replaced.Bearings will be replaced & speed of pumps in monitors reduced.. (3 page(s), 8/4/1981)
• ML20010B497 - LER 78-094/03X-1:on 780902,containment post-accident radiation monitor RE 5029 observed having erratic flow & declared inoperable.Caused by component failure of motor on pump.New bearings & solenoid valve installed. (2 page(s), 8/4/1981)
• ML20010B499 - LER 78-097/03X-1:on 780917,loud noises heard emitting from vacuum pump on post-accident radiation monitor.Caused by cracked diaphragm inside pump discharge solenoid valve, possibly due to high ambient temps. (2 page(s), 8/4/1981)
• ML20010B500 - LER 78-111/03X-1:on 781104,containment post-accident radiation monitor RE 5029 had low flow alarm.Caused by component failure of pump motor & detector assembly.Motor & pump replaced.Speed pump will be reduced. (3 page(s), 8/4/1981)
• ML20010B501 - LER 78-120/03X-1:on 781207,containment post-accident radiation monitor RE 5030 declared inoperable.Caused by component failure.Ambient temp caused changes in bearing grease composition,leading to bearing seizure in pump motor. (4 page(s), 8/4/1981)
• ML20010B503 - LER 80-004/03X-1:on 800107,control rod 5-11 absolute position indication declared inoperable due to fluctuating signals,causing numerous asymmetric rod alarms.Apparently caused by defective reed switch assemblies. (2 page(s), 8/4/1981)
• ML20010B504 - LER 80-015/03X-1:on 800210,control rod 5-11 absolute position indication declared inoperable due to numerous asymmetric rod alarms.Apparently caused by defective absolute position indication reed switch assemblies. (2 page(s), 8/4/1981)