🔍 Key Concepts

• steam and water pressure relationships inside a boiler • where water becomes steam in an auxiliary boiler • difference between feedwater pressure and drum/steam pressure

💭 Think About

• Think about where the pump is working: does it raise the pressure before or after the water enters the boiler? • In which part of the system must the pressure be highest to push water/steam through the rest of the components? • Compare: which parts mainly contain steam and which mainly contain water under pump pressure?

✅ Before You Answer

• Identify which component is on the discharge side of the feedwater pump • Decide whether feedwater must be at higher, equal, or lower pressure than boiler drum/steam pressure to enter the boiler • Confirm whether steam distribution lines and stop valves can ever exceed the boiler’s own maximum pressure under normal operation