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Forwards LERs 81-042/03X-2,82-040/03X-2,82-051/03X-2 & 84-011-03,per listed requirements.

Accession Number: ML20212F978

Date Released: Thursday, August 13, 2020

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• ML20212F974 - Forwards LERs 81-042/03X-2,82-040/03X-2,82-051/03X-2 & 84-011-03,per listed requirements. (2 page(s), 1/8/1987)
• ML20212F985 - LER 81-042/03X-2:on 810709,during scheduled calibr check,9 of 24 steam pipe rupture ultrasonic detector channels found inoperable.Caused by instrument calibr drift.Microphone & transmitter gain adjusted & calibr checks performed. (5 page(s), 1/8/1987)
• ML20212G004 - LER 82-040/03X-2:on 821002 & 08,during surveillance testing, pipe rupture channels under PCRV & 6 of 12 steam pipe rupture pipe cavity channels found inoperable.Caused by instrument drift.Microphone/transmitter gain adjusted. (5 page(s), 1/8/1987)
• ML20212G062 - LER 82-051/03X-2:on 821220,during surveillance test,one PCRV & one pipe cavity steam pipe rupture channel found inoperable due to low response to noise source.Caused by failed resistor made microphone XE-93470A. (6 page(s), 1/8/1987)
• ML20212G089 - LER 84-011-03:on 841012,during surveillance testing,five ultrasonic detectors for steam pipe rupture under PCRV & one detector outside PCRV found out of tolerance limits.Caused by instrument drift.Microphones adjusted to accepted values. (8 page(s), 1/8/1987)