Question 226Steam Plants - 1st Asst/Chief

The correct answer is C) Main and auxiliary air ejector after condensers. Condensate drains from the main and auxiliary air ejector after condensers are normally collected and returned to the low pressure drain system. This is because the air ejectors are used to maintain vacuum in the condenser by removing air and other non-condensable gases. The condensate collected from these ejectors contains water and any entrained air or gases, which need to be removed from the system and returned to the low pressure drain. The other answer choices are incorrect because: A) Steam systems operating above 150 psi would have their own dedicated high pressure drains, B) The steam whistle separator/trap is not directly connected to the main condensate system, and D) The main feed pump steam supply lines do not normally have condensate drains that are returned to the low pressure system.