Question 98Steam Plants - 1st Asst/Chief

The correct answer is B) the boiler may be operated down to 25,000 pounds per hour without securing any burners. The reasoning is that a boiler with a steam delivery capacity of 100,000 pounds per hour and a load range of 4 to 1 for its four steam atomizing burners means that the burners can operate from 100,000 pounds per hour down to 25,000 pounds per hour (100,000 / 4 = 25,000) without the need to secure any burners. This allows the boiler to be operated at any steam output within that range by adjusting the burners accordingly. The other options are incorrect because A) would require securing burners to operate below 25,000 pounds per hour, C) incorrectly calculates the maximum steam output, and D) incorrectly states the minimum steam output when two burners are operating.