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Forwards LERs 79-088/03L-0,79-089/03L-0,79-090/03L-0, 79-091/03L-0 & 79-092/03L-0.

Accession Number: ML19256G491

Date Released: Friday, September 27, 2019

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• ML19256G490 - Forwards LERs 79-088/03L-0,79-089/03L-0,79-090/03L-0, 79-091/03L-0 & 79-092/03L-0. (1 page(s), 12/21/1979)
• ML19256G492 - LER 79-088/03L-0:on 791122,during Mode 3 operation,emergency feedwater flow control valve 2CV-1025-1 failed to close on demand from control room.Caused by valve operator hydraulic pressure being low.Sys vented. (1 page(s), 12/21/1979)
• ML19256G496 - LER 79-089/03L-0:on 791124,during Mode 3 operation,emergency feedwater flow control valve 2CV-1025-1 failed to close on demand from control room.Caused by trash in valve operator hydraulic sys & hydraulic snubber out of adjustment. (1 page(s), 12/21/1979)
• ML19256G500 - LER 79-090/03L-0:on 791125,during Mode 3 operation,emergency feedwater flow control valve 2CV-1025-1 failed to close on demand from control room.Caused by valve operator hydraulic sys being low on fluid.Sys filled. (1 page(s), 12/21/1979)
• ML19256G503 - LER 79-091/03L-0:on 791126,during Mode 3 operation,dissolved oxygen concentration of reactor coolant sys found greater than 0.1 ppm but less than 0.2 ppm.Caused by large RCS deboration. (1 page(s), 12/21/1979)
• ML19256G505 - LER 79-092/03L-0:on 791201,during Mode 2 operation,emergency feedwater flow control valve 2CV-1025-1 failed to close on demand from control room.Caused by lack of hydraulic pressure due to low fluid level in accumulator. (1 page(s), 12/21/1979)