🔍 Key Concepts

• Identify what space inside the drum the fitting labeled C is located in (water space vs steam space). • Remember the typical internal components of a steam drum: dry pipes / steam collectors, feed distribution pipes, and scum / blowoff arrangements. • Match each answer choice with the part of the boiler (water surface, steam outlet, feed inlet, emergency level control) where that function would logically be located.

💭 Think About

• Look at where "C" runs along the length of the drum and what external nozzles it connects to at the top – would that be carrying water, steam, or impurities? • If a fitting is meant to "distribute feed water," where would you expect its inlet connection to be on the outside of the drum: near the feed check valve, the steam outlet, or the blowdown? • Which function would most logically be associated with a long perforated pipe high in the steam space versus a pipe low in the water space near the bottom of the drum?

✅ Before You Answer

• Verify whether C is above or below the normal water level line shown on the illustration. • Trace any arrows or small branch pipes on C to see whether flow appears to be toward or away from the superheater / main steam outlet. • Confirm that the location of C is consistent with either a steam-collecting/drying function or a water-distributing function before choosing your answer.