Which method should be used to warm up the...

Which method should be used to warm up the...

Question 1 of 3109366636ee728f7522a1c518158

Which method should be used to warm up the pump turbines prior to discharge?

Question 1 of 31093

Q

Which method should be used to warm up the pump turbines prior to discharge?

🔍 Key Concepts

• Thermal expansion of turbine components when steam is first admitted • Importance of keeping the pump unloaded (no discharge pressure) during warm-up • Risks of water hammer and overload if valves are closed while running

💭 Think About

• When you first admit steam to a cold turbine, what do you want the rotor to be able to do as the metal heats up and expands? • How should the discharge side of a cargo pump be arranged during warm-up to avoid high pressure and possible damage? • Which option allows steam to warm the turbine gently while avoiding putting strain on the pump, piping, or valves?

✅ Before You Answer

• Check which choices involve running with the discharge closed, and think about what that does to pressure and load. • Identify which option keeps the turbine/pump as unloaded as practical during the warm-up period. • Verify which method best prevents sudden pressure surges in the discharge line and mechanical stress on the pump.