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AO Repts 50-249/75-19,20,21,22,23 & 29:on 750416,22,25 & 0529,while performing local leak rate tests,leakage from MSIVs observed to be above allowable limits.Caused by loose valve packing & failure of four feedwater check valves.

Accession Number: ML17194B579

Date Released: Tuesday, April 7, 2020

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• ML17194B578 - AO Repts 50-249/75-19,20,21,22,23 & 29:on 750416,22,25 & 0529,while performing local leak rate tests,leakage from MSIVs observed to be above allowable limits.Caused by loose valve packing & failure of four feedwater check valves. (17 page(s), 8/14/1975)
• ML20084N833 - Supplemental AO 50-249/75-22:plant mod being initiated to eliminate valve seat failures due to cryogenic stress. (2 page(s), 10/15/1975)