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Forwards LER#78-073/03L-0,78-074/03L-0,78-075/03L-0, 78-076/03L & 78-077/03L-0.

Accession Number: ML19294A471

Date Released: Wednesday, March 18, 2020

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• ML19294A470 - Forwards LER#78-073/03L-0,78-074/03L-0,78-075/03L-0, 78-076/03L & 78-077/03L-0. (1 page(s), 11/7/1978)
• ML19294A472 - LER#78-073/03L-0 on 781009:Instru Air to Containment Iso Valve was declared inoper when valve was blocked open to allow repair of control air supply regulator valve actuator. Regulator replaced & valve stem reconnected. (1 page(s), 10/9/1978)
• ML19294A473 - LER 78-074/03L-0:on 780917,during test,1A motor driven aux feed pump failed to auto-start due to B1F sequencer failure. Caused by 205F Agastat Relay time delay setpoint which had drifted.Setpoint was adjusted & retest performed. (1 page(s), 11/7/1978)
• ML19294A474 - LER 78-075/03L-0:on 781010,review of data acquired during response time testing indicated possible faulty component in 1-2A D/G output breaker control circuit,causing delay in closure.Fuse on 125 V DC supply was blown.Fuse replaced. (1 page(s), 11/7/1978)
• ML19294A475 - LER 78-076/03L-0;on 781011,during operational check,1B diesel generator was started.B air start sloenoid valve stuck open,bleeding B air receiver down to 10psig.Valve disassembled & parts cleaned.Unit re-tested. (1 page(s), 11/7/1978)
• ML20064E175 - LER 78-077/03L-0:on 781011,1B diesel generator declared in oper when inner stage relief on B air compressor lifted. Cause:desiccant from recently installed air dryers.B air compressor replaced & desiccant removed. (1 page(s), 11/7/1978)