Steam Turbines

• State the function of a steam turbine.
• Define the term “impulse movement.”
• Describe the operation of blading in a typical single-stage steam turbine.

Auxiliary Devices and Systems
In this topic, you will learn to:

• Identify typical steam turbine auxiliary devices and state the function of each device.
• Describe two types of turbine auxiliary systems and explain what each is used for.
• Describe how speed is controlled in a typical single-stage steam turbine.
• Explain what an overspeed trip mechanism is and describe its general operation.

Turbine Components
In this topic, you will learn to:

• Identify the main parts of a typical single-stage steam turbine and state the function of each part.

Turbine Startup, Operation, and Shutdown
In this topic, you will learn to:

• Describe a general procedure associated with the startup of a typical non-condensing, single-stage steam turbine.
• Describe some of the general checks commonly made on a non-condensing, single-stage steam turbine during operation.
• Identify the basic steps associated with normal and emergency shutdowns of a typical non-condensing, single-stage steam turbine and related equipment.

Typical Operating Problems
In this topic, you will learn to:

• Identify some common operating problems for a noncondensing, single-stage steam turbine and explain how they can be corrected.