Question 314Steam Plants - Assistant Engineer70% to pass
Combustion control systems on automatic boilers are designed to prevent immediate burner ignition after a normal or safety shutdown in order to allow time for _______________.
AI Explanation
The correct answer is C) the furnace to be purged.
Combustion control systems on automatic boilers are designed to prevent immediate burner ignition after a normal or safety shutdown in order to allow time for the furnace to be purged. This is a safety measure to ensure that any unburned fuel or gases are cleared from the furnace before the burner is reignited, preventing the risk of explosions or fires.
The other answer choices are incorrect because they do not address the primary purpose of the combustion control system, which is to allow for furnace purging. Specifically, A) the fuel pump starting and B) the drum level equalizing are not directly related to the furnace purging process, while D) electric charge buildup in the igniter is not a concern that the combustion control system is designed to address.
Related Questions
#312 Excessive accumulation of carbon deposits on a boiler burner throat ring and diffuser could result in _______________.#313 When the flame scanner senses flame failure during boiler operation, which of the listed events will occur FIRST? #315 When firing a boiler in local manual control, an increase in boiler load must be accompanied by a/an _______________.#316 In an automatically fired boiler, the steam pressure regulator controls the supply of fuel oil to the burners by responding to variations in the _______________.#317 In automated boiler operations, a dirty flame scanner will most likely result in _______________.