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Part 21 rept re contaminated lubricant on operating mechanisms of two 5HK250 circuit breakers resulting in failure to close on command & to perform safety-related function.Initially reported by util on 890303.

Accession Number: ML17325B169

Date Released: Wednesday, September 16, 2020

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• ML17325B168 - Part 21 rept re contaminated lubricant on operating mechanisms of two 5HK250 circuit breakers resulting in failure to close on command & to perform safety-related function.Initially reported by util on 890303. (31 page(s), 3/21/1989)
• ML20246M219 - Procedure MS-3.2.1.9-1B, "Maint & Surveillance ITE Medium Voltage Switchgear Equipment." (12 page(s), 3/21/1989)
• ML17325B170 - Procedure MS-3.1.1.9-2B, "Maint & Surveillance ITE Low Voltage Switchgear Equipment." (12 page(s), 3/21/1989)