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Forwards LERs 88-012-00,88-013-00,88-014-00 & 88-015-00 for plant.

Accession Number: ML20154N185

Date Released: Tuesday, June 16, 2020

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• ML20154N181 - Forwards LERs 88-012-00,88-013-00,88-014-00 & 88-015-00 for plant. (1 page(s), 5/27/1988)
• ML20154N216 - LER 88-012-00:on 880427,automatic reactor scram occurred due to reactor water level of less than Level 3.Caused by personnel error & procedural inadequacy.Operators involved counseled & sys operating instructions revised. (3 page(s), 5/27/1988)
• ML20154N256 - LER 88-013-00:on 880427,RWCU sys containment isolation occurred.Caused by increase in differential flow trip setpoint &/or time delay.Condition under evaluation & RWCU flow control valves engineering design change initiated. (3 page(s), 5/27/1988)
• ML20154N314 - LER 88-014-00:on 880428,reactor protection sys (RPS) actuation occurred on reactor vessel high level.Caused by failure of contacts to close in bypass relay for RPS Channel A.Relay replaced & tested & old relay returned for analysis. (2 page(s), 5/27/1988)
• ML20154N345 - LER 88-015-00:on 880430,reactor scram occurred due to reactor water level of less than Level 3.Caused by procedural deficiency.Operating procedure revised,operators involved counseled & operators trained re events sequence. (3 page(s), 5/27/1988)