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Followup to RO-77-16:on 771129,dry fluid accumulator discovered on safety sys hydraulic snubber caused by failing O-ring.Original polyurethene seals were replaced w/ethylene- propylene & one unit apparently was overlooked.LER encl.

Accession Number: ML19319D814

Date Released: Friday, October 25, 2024

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• ML19319D813 - Followup to RO-77-16:on 771129,dry fluid accumulator discovered on safety sys hydraulic snubber caused by failing O-ring.Original polyurethene seals were replaced w/ethylene- propylene & one unit apparently was overlooked.LER encl. (1 page(s), 1/27/1978)
• ML19319D822 - LER 77-016/03X-1:on 780105,fluid leakage discovered on 781129 traced to failing polyurethene O-ring.All Bergen- Patterson snubber polyurethane seals were replaced w/ethylene-propylene seals.Apparently one seal was missed. (1 page(s), 1/27/1978)
• ML19319D829 - Forwards RO-77-16. (2 page(s), 11/29/1977)
• ML19319D839 - RO-77-16:on 771101,fluid accumulator for reactor coolant pump protective snubber found dry during surveillance insp. Caused by leaking O-ring.Unit rebuilt & returned to svc. O-ring being checked for proper matl. (1 page(s), 11/29/1977)