Question 151Steam Plants - QMED70% to pass
Which of the following precautions should be taken prior to lighting off a boiler?
AI Explanation
The correct answer is A) Purge the furnace of combustible gases.
Purging the furnace of combustible gases before lighting off a boiler is a critical safety precaution. This removes any unburnt fuel or gases that could otherwise ignite explosively when the burner is lit. The other options are not the primary safety step required before lighting off a boiler. Blowing down the mud drum, closing the air register, and securing steam line drains are important operating procedures, but do not directly address the risk of an explosive ignition, which is the primary hazard that must be mitigated before lighting off the boiler.
Related Questions
#149 Which of the valves listed should be closed before lighting off a boiler? #150 When raising steam on an idle boiler and the steam pressure has risen to about 5 pounds more than the pressure of the boiler already on the line, you can _______________.#152 While raising steam on a cold boiler, the air cock is to be closed after _______________.#153 In a pressure type main propulsion turbine lubrication system, the lube oil service pumps normally take suction from the main sump and discharge directly to the _______________.#154 Which of the conditions listed should be immediately reported to the engineering officer on watch?