🔍 Key Concepts

• Function of the steam drum in separating and collecting saturated steam before it goes to the superheater • How saturated steam is routed from the steam drum to the superheater inlet header (look for a connection that leads down toward the tube bank, not out to the plant piping) • Visual differences between a safety valve/vent on top of the drum and a steam outlet nozzle feeding another boiler component

💭 Think About

• Follow the internal piping from each labeled top connection and see which one actually connects to the side where the superheater tubes or header would be located, rather than simply venting upward. • Ask yourself: which labeled fitting would need to handle continuous steam flow to the superheater, and which ones are meant only for overpressure relief or access (like safety valves, sampling, or inspection)? • Compare the shapes: which top-mounted item is directly tied to a dry pipe or internal collection pipe inside the drum that gathers dry saturated steam from the steam space?

✅ Before You Answer

• Verify which label is connected by internal piping to the superheater inlet header or the side outlet that obviously turns down toward the furnace area. • Confirm that the chosen label is not drawn with safety-valve details (spring, discharge outlet) and is not simply a vent or test connection. • Double‑check that your choice represents a delivery path for steam flow (inlet to superheater), not a return, gauge, or relief device.