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Board Notification 83-26:forwards info describing Salem Unit 1 830225 failure of reactor trip breakers to open on automatic signal from protective sys.Info may affect conclusions re probability of/corrective measures for ATWS.

Accession Number: ML18087A711

Date Released: Sunday, November 8, 2020

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• ML20069A377 - Board Notification 83-26:forwards info describing Salem Unit 1 830225 failure of reactor trip breakers to open on automatic signal from protective sys.Info may affect conclusions re probability of/corrective measures for ATWS. (24 page(s), 3/3/1983)
• ML18087A710 - Slide presentation entitled "Commission Briefing re Salem Event on 830225." (35 page(s), 3/2/1983)
• ML18087A712 - Documents actions initiated by Westinghouse Owners Group (WOG) Regulatory Response Group re 830225 failure of reactor trip breakers to open on automatic trip signal & effective generic measures to be taken. (2 page(s), 3/1/1983)
• ML18087A713 - RO:on 830222 & 25,reactor trip breakers failed to open on receipt of trip signal from reactor protection sys.Caused by lack of proper latch lubrication.Corrective actions include Tech Spec review & new procedure development. (5 page(s), 3/1/1983)