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Forwards LERs 81-001/03L-0,81-002/03L-0,81-003/03L-0, 81-004/03L-0 & 81-009/03L-0.

Accession Number: ML18139B048

Date Released: Monday, December 10, 2018

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• ML18139B047 - Forwards LERs 81-001/03L-0,81-002/03L-0,81-003/03L-0, 81-004/03L-0 & 81-009/03L-0. (1 page(s), 1/30/1981)
• ML18139B049 - LER 81-001/03L-0:on 810102,one boric acid flow path to core inoperable.Caused by personnel inadvertently closing valve 2-CH-226.Flow path restored & personnel reinstructed. (2 page(s), 1/30/1981)
• ML18139B050 - LER 81-002/03L-0:on 810105,PT-27A revealed loss of heat tracing for panel 10 circuits 1A & 1B & panel 11 circuit 4A. Caused by open heating elements.Defective heat tracing tape replaced. (2 page(s), 1/30/1981)
• ML18139B051 - LER 81-003/03L-0:on 810106,liquid radwaste monitors RM-GW-101,102,RM-VG-103,104,RM-SW-107 & RM-LW-108 failed low.Caused by failed fuse.Fuse replaced. (2 page(s), 1/30/1981)
• ML18139B052 - LER 81-004/03L-0:on 810107,reactor trip breaker A failed to open.Caused by sporadic failure of under voltage device due to missing bushing.Under voltage device replaced. (2 page(s), 1/30/1981)
• ML18139B053 - LER 81-009/03L-0:on 810105,PT-27A revealed loss of heat tracing for panel 11 circuit 4C.Caused by short in heat tape.Defective heat tracing replaced.Design change initiated. (2 page(s), 1/30/1981)