Question 56Steam Plants - Assistant Engineer

The correct answer is D) remove any sediment that has accumulated. Blowing down a gage glass periodically is done to remove any sediment or scale that has accumulated in the gage glass. This helps maintain the accuracy of the water level reading in the steam drum, which is critical for ensuring proper water levels in the boiler system. The other answer choices are incorrect because they do not directly address the purpose of blowing down the gage glass, which is to clear out any accumulated sediment.