Starting a boiler without pre-purging the furnace
Ignoring furnace blowback and continuing boiler operation
Bypassing safety and alarm when operating the boiler
No checks on boiler refractory at regular interval
Not cleaning the gauge glasses and keeping them dirty
Checking the pilot burner spark with the boiler in operation by taking out the pilot burner locally
No oil clean-up from the refractory / furnace area post-burner maintenance
Firing a boiler continuously when starting from a cold condition
Wrong operation of EGB circulating pump starting it just before main engine start
Not cleaning the boiler tubes regularly
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