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Forwards LERS 79-005/03L-1,79-028/03L,79-045-03L-1 & 79-086/03L-1.

Accession Number: ML19209D152

Date Released: Sunday, August 11, 2019

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• ML19209D151 - Forwards LERS 79-005/03L-1,79-028/03L,79-045-03L-1 & 79-086/03L-1. (1 page(s), 10/13/1979)
• ML19209D156 - LER 79-005/03L-1:on 790106,borated water storage tank bistable was tripped & decay heat valves DH9A opened & DH7A closed.Cause by component failure of output relay K51A in safety feature actuation sys channel 4. (3 page(s), 10/13/1979)
• ML19209D160 - LER 79-028/03L-1:on 790217,high level fail alarm received for borated water storage tank level on safety features actuation sys channel 1.Caused by inadequate insulation of instrument piping & poor location of heat trace temp sensor. (3 page(s), 3/15/1979)
• ML19209D164 - LER 79-045/03L-1:on 790330,borated water storage tank low level trip setpoint in safety feature actuation sys channel 2 was out of tolerance.Caused by noisy constant current test potentiometer.Potentiometer replaced. (3 page(s), 4/25/1979)
• ML19209D171 - LER 79-086/03L-1:on 790725,train 2 of control room emergency ventilation sys was inoperable.Cause by one of three thermistors in compressor motor winding failing to open circuit.Compressor repaired & new one will be installed. (2 page(s), 8/21/1979)