🔍 Key Concepts

• Centrifugal feed pump operating characteristics (need for minimum flow to prevent overheating/cavitation) • Proper shutdown sequence for steam-driven pumps versus emergency trips • Difference between normal shutdown and overspeed/emergency protection devices

💭 Think About

• Before stopping a centrifugal boiler feed pump, what must you protect the pump from in terms of flow and temperature? • Which method sounds like a controlled, normal shutdown rather than an emergency action? • How is recirculation (bypass) flow used during starting and stopping of boiler feed pumps?

✅ Before You Answer

• Identify which option uses a bypass/recirculating line and think about why that exists on a boiler feed pump • Decide which choices describe emergency actions (used only for dangerous conditions) versus routine procedures • Ask yourself: during normal shutdown, should you first ensure adequate cooling/flow through the pump or abruptly cut off steam/power?