Question 220Steam Plants - 1st Asst/Chief70% to pass
Fusible plugs are installed in fire-tube boilers to _______________.
AI Explanation
The correct answer is B) warn the engineer of low water level.
Fusible plugs are installed in fire-tube boilers to melt and release steam if the water level drops dangerously low. This alerts the engineer that the water level is critically low, allowing them to take immediate action to prevent damage to the boiler.
The other options are incorrect because: A) Draining the boiler is not the purpose of fusible plugs. C) Cooling the crown sheet is not the main function of fusible plugs. D) Fusible plugs do not open the burners' electrical firing circuits.
Related Questions
#217 Which of the following statements concerning fire-tube boilers is correct? #218 The boiler shown in the illustration would be classed as MO-0064 #221 The tube sheets installed in a fire-tube auxiliary boiler are normally connected by _______________.#222 Which of the conditions listed could cause a boiler economizer to leak? #223 When reviewing the engine log on a steam ship, you notice a lower than normal feed water temperature, high furnace pressure and higher than normal superheater temperature. Which of the following could be a possible cause?