Question 201Steam Plants - 1st Asst/Chief

You are correct, the answer is A) steam header pressure. In an automatically fired boiler, the steam pressure regulator controls the supply of fuel oil to the burners by responding to variations in the steam header pressure. The steam pressure regulator monitors the steam header pressure and adjusts the fuel oil supply to the burners accordingly, in order to maintain a stable steam pressure. The other options are incorrect because: B) steam drum water level is monitored by a different control system, C) burner flame intensity is not directly monitored by the steam pressure regulator, and D) the master fuel oil solenoid valve position is controlled by the steam pressure regulator, not the other way around.