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Forwards util response to RO Bulletin 73-1.

Accession Number: ML20090C846

Date Released: Saturday, October 26, 2024

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• ML20090C841 - Forwards util response to RO Bulletin 73-1. (1 page(s), 10/25/1973)
• ML20090C850 - Advises that during recent refueling outage,all safety-related DB-50 & DB-75 circuit breakers utilizing overcurrent trip delay devices fitted w/new & improved devices. (1 page(s), 9/17/1973)
• ML20090C865 - Forwards util response to RO Bulletin 73-1.Util utilizes subj circuit breakers & will install improved design trip devices during June refueling outage. (1 page(s), 4/23/1973)
• ML20090C870 - Advises that 20 circuit breakers w/subj trip device used in safety-related functions.Installation of new devices expected during June refueling outage. (2 page(s), 3/29/1973)
• ML20090C895 - Forwards RO Bulletin 73-1, "Faulty Overcurrent Trip Delay Device in Circuit Breakers for ESF." Review requested. (2 page(s), 2/23/1973)
• ML20090C899 - Advises of review of control circuits for circuit breakers of safety-related equipment.Disabling one component does not render redundant components inoperable. (1 page(s), 2/22/1973)
• ML20090C904 - Requests review of all safety-related equipment control circuits,as result of reported deficiencies in control circuit design.Review due within 60 days. (2 page(s), 12/22/1972)