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Forwards LERs 81-017/03L-0,81-018/03L-0,81-024/03L-0, 81-044/03L-0 & 81-045/03L-0.

Accession Number: ML20009H621

Date Released: Friday, January 24, 2020

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• ML20009H620 - Forwards LERs 81-017/03L-0,81-018/03L-0,81-024/03L-0, 81-044/03L-0 & 81-045/03L-0. (1 page(s), 7/29/1981)
• ML20009H637 - LER 81-017/03L-0:on 810702,discovered that no fire watch had been posted for two unsealed fire barrier penetrations in cable spreading room area.Caused by const personnel error. Fire watch posted & seal installed. (2 page(s), 7/29/1981)
• ML20009H643 - Ler 81-018/03L-0:on 810702,power operated relief valves lifted to mitigate overpressurization transient.Caused by unisolated charging flow control valve.Valve isolated. RCS pressure reduced below setpoint. (2 page(s), 7/29/1981)
• ML20009H668 - LER 81-024/03L-0:on 810701,fire seal in penetration not restored & fire watch not maintained following installation of new cables.Caused by const personnel error.Fire barrier sealed.Const personnel reinstructed. (2 page(s), 7/29/1981)
• ML20009H692 - LER 81-044/03L-0:on 810705,amp readings for heat tracing panel 10,circuits 2A & 4A,& panel 11,circuits 1A & 1B,were below Tech Specs.Caused by excessive heating of tape. Defective heat tracing replaced & tested. (2 page(s), 7/29/1981)
• ML20009H676 - LER 81-045/03L-0:on 810703,BIT recirculation valves closed. Caused by isolation of instrument air to auxiliary bldg to avert reactor trip.Air line break isolated & auxiliary bldg instrument air restored,reopening valves. (2 page(s), 7/29/1981)