🔍 Key Concepts

• Main steam header vs auxiliary steam system shown on SG-0005 • Location of the boiler superheater outlet and what steam condition it provides • How a pressure-reducing / desuperheating station is drawn on the diagram and which services it supplies

💭 Think About

• Starting at the Main Feed Pump Drive Turbines symbol, trace the steam supply line backwards: does it tie into the high‑pressure main steam header or the lower‑pressure auxiliary/bleed steam system? • Look at the block labeled with the reducing station (box 6): do the feed pump turbines receive steam through this station, or do they bypass it? • Check whether the line to the turbines shows any desuperheating spray or PRV symbols that would change pressure or temperature before the steam reaches them.

✅ Before You Answer

• Confirm whether the turbine supply line is upstream (high pressure) or downstream (reduced pressure) of the desuperheating/reducing station. • Verify if any desuperheating spray connection actually enters the line going to the feed pump turbines. • Compare the steam condition of other loads connected to the same header (e.g., soot blowers, burner atomizing steam) and match that header’s typical pressure/temperature with the answer choices.