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Forwards updated LERs 78-027/03X-6,79-032/03X-2 & 79-056/03X-1,et al...
Accession Number: ML20072F941
Date Released: Thursday, March 26, 2020
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- ML20072F937 - Forwards updated LERs 78-027/03X-6,79-032/03X-2 & 79-056/03X-1,et al... (2 page(s), 6/6/1983)
- ML20072F972 - Updated LER 78-027/03X-6:on 780706,numerous failures of ITT Barton Model 289 pressure differential switches reported. Caused by dirt accumulation & oxidation on contact surfaces. Switches replaced w/Model 752 pressure transmitters. (5 page(s), 6/6/1983)
- ML20072F986 - Updated LER 79-032/03X-2:on 790913,during testing,four of 12 helium circulator seal malfunction pressure differential switch units would not trip.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G010 - Updated LER 79-056/03X-1:on 791030,during testing,seven of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G032 - Updated LER 80-007/03X-1:on 800219,during testing,two of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G038 - Updated LER 80-016/03X-1:on 800322,during testing,four of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G045 - Updated LER 80-020/03X-1:on 800418,during testing,two of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G049 - Updated LER 80-026/03X-1:on 800524,during testing,eight of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G056 - Updated LER 80-034/03X-1:on 800619,during testing,two of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G067 - Updated LER 80-041/03X-1:on 800721,during testing,one of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (6 page(s), 6/6/1983)
- ML20072G073 - Updated LER 80-051/03X-1:on 800922,during testing,five of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G080 - Updated LER 80-072/03X-1:on 801117,during testing,three of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G082 - Updated LER 81-006/03X-1:on 810107,during annual testing & calibr,six of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G086 - Updated LER 81-016/03X-1:on 810213,during testing,three of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G093 - Updated LER 81-024/03X-1:on 810317,during testing,five of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switches.Switches replaced. (5 page(s), 6/6/1983)
- ML20072G103 - Updated LER 81-047/03X-1:on 810807,during testing,one of 12 helium circulator seal malfunction pressure differential switch units tripped outside limits.Caused by dirt accumulation in electrical switch.Switch replaced. (5 page(s), 6/6/1983)