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Starting a Small Steam Turbine for Boiler Feedwater Pump

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Starting a Small Steam Turbine for Boiler Feedwater Pump

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Questions and Answers

What is the first step in starting a small non-condensing steam turbine driving a feedwater pump?

Clear any lockouts or tagouts on the pump being started (correct)

Check the bearing lube oil levels and add oil if necessary

Start bearing cooling water, if applicable

Conduct a valve line-up

Why is it important to check the area surrounding the pump for rags, tools, or other materials before starting the pump?

To open the pump warm-up line

To ensure that the pump casing drains are closed

To start bearing cooling water, if applicable

To avoid hampering the operation of the pump (correct)

When starting a centrifugal pump, in what position should the discharge valve be?

Depends on the temperature of the pump

Open

Partially open

Closed (correct)

What is the purpose of opening the pump warm-up line when starting a small non-condensing steam turbine driving a feedwater pump?

To circulate hot boiler feed through the pump to warm it up Signup and view all the answers

Who should give the direction for starting or stopping pumps and turbines?

Shift engineer or control room operator Signup and view all the answers

What should be done first before starting the turbine?

Clear any lockouts or tagouts on the turbine being started. Signup and view all the answers

What is the correct step for warming up the turbine after ensuring the steam header is at operating pressure?

Slowly warm up the steam line to the turbine and then close the manual drain and trap bypasses. Signup and view all the answers

What should be checked while the turbine is on a slow roll?

The cooling system is at proper temperature ranges. Signup and view all the answers

What should be done after manually testing the overspeed trip during turbine startup?

Close the steam inlet to the turbine. Signup and view all the answers

What is a general instruction for stopping a small steam turbine driving a feedwater pump?

Gradually reduce feedwater pump load and then turn off cooling water to the pump and turbine lube oil systems. Signup and view all the answers