🔍 Key Concepts
• Look at where the float/level controller (M/I) is physically located in the illustration and which compartment it is connected to (E, F, or G).
• Think about the purpose of a drain cooler in a feedwater heater train: what fluid is being cooled and why its level must be controlled.
• Trace the arrows showing condensate inlet and outlet versus feedwater flow to see which stream the regulator can actually influence.
💭 Think About
• From the drawing, which section (gland exhaust condenser, first-stage heater, drain cooler, or feedwater outlet) would overflow or flood if its level were NOT regulated?
• Does a level or drain regulator normally control incoming steam flow, condensate level in a collection space, or the temperature/flow of outgoing feedwater? Use typical heater operation to guide you.
• Follow the piping from the regulator body: where does that line go, and which functional section does it drain or protect?
✅ Before You Answer
• Verify which labeled space (E, F, G) is identified as the drain cooler section in the key to the illustration you would have on the exam.
• Confirm that the regulator’s sensing element is in a condensate collection area, not in the feedwater tubes or steam inlet space.
• Make sure the option you choose mentions level of condensate in a specific section, not control of steam admission or feedwater discharge.