Question 11Steam Plants - 1st Asst/Chief

The correct answer is D) automatically regulates the quantity of oil and air flow to the burner. The pressuretrol is a safety device installed on an auxiliary boiler that monitors the steam pressure. When the steam pressure changes, the pressuretrol automatically adjusts the oil and air flow to the burner to maintain the desired steam pressure. This helps prevent dangerous pressure fluctuations in the boiler. The other options are incorrect because they do not accurately describe the primary function of the pressuretrol. The pressuretrol does not control the flow of feed water (A), monitor the water level (B), or secure the fires when a fusible plug burns out (C). Its main purpose is to regulate the combustion process to maintain safe boiler pressure.