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Forwards LERs,including 82-038/03L-1,83-007/03X-1, 83-020/03X-1,83-021/03X-1,83-022/03X-1,83-023/01X-1, 83-024/01X-1,83-025/03X-1,83-031/03X-1,83-036/03X-2, 83-040/03X-1,83-042/01X-1,83-043/03X-1 & 83-044/03X-1.

Accession Number: ML20106B213

Date Released: Sunday, October 27, 2024

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• ML20106B209 - Forwards LERs,including 82-038/03L-1,83-007/03X-1, 83-020/03X-1,83-021/03X-1,83-022/03X-1,83-023/01X-1, 83-024/01X-1,83-025/03X-1,83-031/03X-1,83-036/03X-2, 83-040/03X-1,83-042/01X-1,83-043/03X-1 & 83-044/03X-1. (2 page(s), 10/12/1984)
• ML20106B255 - LER 82-038/03X-1:on 821202,control room indication for windspeed direction & air temp Delta T failure discovered. Caused by loose cable plug.Defective plug replaced. (3 page(s), 10/12/1984)
• ML20106B270 - LER 83-007/03X-1:on 830222,auxiliary bldg exhaust fan tripped.Cause unknown.Exhaust fans AH-E-8A & B started & sys returned to svc. (2 page(s), 10/12/1984)
• ML20106B282 - LER 83-020/03X-1:on 830610,flowrate for auxiliary bldg exhaust fans AH-V-8A/B decreased below Tech Spec limits. Caused by problems w/vortex damper linkage for fans.Vortex damper linkage repaired. (3 page(s), 10/12/1984)
• ML20106B301 - LER 83-021/03X-1:on 830616 & 30,nine fire barrier seals discovered to be nonfunctional.Caused by dehydration cracking in two seals,open pull boxes for four seals & physical deformation of one seal. (3 page(s), 10/12/1984)
• ML20106B349 - LER 83-022/03X-1:on 830609,loop A T-hot instrument declared inoperable.Caused by inadvertent removal of loop A T-hot instrumentation fuse.Fuse replaced & instrument returned to svc. (3 page(s), 10/12/1984)
• ML20106B359 - LER 83-023/01X-1:on 830630,inability to verify containment integrity per Tech Specs discovered for outboard containment penetrations R-561 & R-565.Caused by administrative procedures not requiring review.Procedures revised. (3 page(s), 10/12/1984)
• ML20106B365 - LER 83-024/01X-1:on 830703,transformer 2-11E failed.Caused by turn-to-turn insulation failure near top outer layer of middle high voltage winding.Transformer replaced. (3 page(s), 10/12/1984)
• ML20106B368 - LER 83-025/03X-1:on 830621,air intake tunnel Halon sys partial disarmament discovered.Caused by disarming sys for protection from lightning strike.Louvers installed. (3 page(s), 10/12/1984)
• ML20106B378 - LER 83-031/03X-1:on 830621,air intake tunnel Halon sys partial disarmament discovered.Caused by disarming sys for protection from lightning strike.Louvers installed. (3 page(s), 10/12/1984)
• ML20106B381 - LER 83-036/03X-2:on 830808,hydraulic truck crane boom struck & grounded 230 kV bus 4 feedline.Caused by allowing crane boom to come too close to 230 kV line due to crane operator & driver personal error. (3 page(s), 10/12/1984)
• ML20106B385 - LER 83-040/03X-1:on 830811,standby pressure control surge tank level transmitter SPC-LT-3A failed low.Caused by loose resistor on SPC-LT-3A terminal block interrupting current loop of level transmitter.Block jumpered. (2 page(s), 10/12/1984)
• ML20106B392 - LER 83-042/01X-1:on 830901,discovered that only one of required two isolation valves between RCS & non-RCS grade water sources closed on three occasions during RCS feed & bleed operations.Caused by incorrect procedure. (3 page(s), 10/12/1984)
• ML20106B399 - LER 83-043/03X-1:on 830827,air intake tunnel Halon sys partially disarmed on three occasions between 830827 & 0912.Caused by disarming sys for protection from lightning strike.Louvers installed. (3 page(s), 10/12/1984)
• ML20106B402 - LER 83-044/03X-1:on 830822,concrete block accidently dropped on transformer for lighting panel LPF-4E.Caused by shorting core to case degrading insulation.Transformer replaced. (3 page(s), 10/12/1984)
• ML20106B408 - LER 83-046/03X-1:on 830831 & 0901,standby pressure control surge tank level transmitter SPC-LT-3A failed low.Caused by loose or broken conductor in electrical connection assembly between level transmitter & junction box/local indicator. (3 page(s), 10/12/1984)
• ML20106B417 - LER 83-050/01X-1:on 831005,in-core thermocouple B-7 declared inoperable.Cause unknown. (2 page(s), 10/12/1984)
• ML20106B432 - LER 83-051/01X-1:on 831010,discovered Procedure 2104-4.62, "Temporary Nuclear Sampling Sys," failed to provide double valve isolation of RCS during certain sampling modes. Caused by failure to incorporate SER requirements. (2 page(s), 10/12/1984)
• ML20106B448 - LER 83-052/03X-1:on 830903,discovered nuclear svc river water valve NR-V-32A opened several times between 830920 & 27.Caused by operator error in failing to follow procedure. Operator reprimanded. (2 page(s), 10/12/1984)
• ML20106B465 - LER 83-055/03X-1:on 831026,Halon bottle in location EI-5A discovered to be below Tech Spec pressure.Caused by leaking fill valve.Halon bottle replaced. (2 page(s), 10/12/1984)