The legally required standby system at your facility kicks in a few times each year. Twice over the past 12 months, it’s had two incidents. First, a feeder breaker tripped for no apparent reason; subsequent investigation revealed a branch circuit problem coincident to this. The second incident was similar, but on a different feeder breaker.
The plant manager rejects the idea there’s a selective coordination problem, because “Bob” set all the breakers and he h