Question 270Steam Plants - 1st Asst/Chief

The correct answer is B) Trip the master solenoid. If the water level in the boiler gage glass drops out of sight and the burners fail to secure automatically, the appropriate action is to trip the master solenoid. This will immediately shut off the fuel supply to the burners, preventing the boiler from overheating and potentially causing a dangerous situation. Tripping the master solenoid is a critical safety measure in this scenario, as it quickly and effectively secures the boiler. The other options are incorrect because they do not directly address the immediate safety concern. Repairing the feed water regulator (A) or increasing the feed pump speed (D) may help restore the water level, but they do not immediately shut off the fuel supply. Blowing down the gage glass (C) does not resolve the underlying issue and could potentially make the situation worse.