Question 139Steam Plants - Assistant Engineer

The correct answer is A) main and/or auxiliary condenser. The atmospheric drain tank (ADT) on a vessel is used to collect condensate from various sources, such as vents and drains. This condensate is then normally drained into the main and/or auxiliary condenser, which is the correct destination as per marine engineering practices and regulations. The other answer choices are incorrect because: B) the distillate tank is used to store freshwater distillate, not receive drainage from the ADT; C) the main/auxiliary air ejector condenser is a separate component used for different purposes; and D) the reserve feed tanks are used to store boiler feedwater, not receive drainage from the ADT.