Turbine Auxiliaries System and Control Training

505-01 Steam Turbine Design

When you complete this lesson, you will be able to describe the basic components that comprise a typical steam turbine and explain the purpose of each. In addition, you will be able to trace the steam flow path through a typical steam turbine.

  • Describe the energy conversion that takes place in a steam turbine
  • Explain the difference between impulse and reaction blades, and identify where each is found in a steam turbine
  • Discuss the design characteristics of a steam turbine casing
  • Explain the difference between thrust bearings and journal bearings, and identify where each is found in typical steam turbine design
  • Trace the steam flow path through a high, intermediate, and low pressure turbine

505-02 Steam Turbine Control and Operation

When you complete this lesson, you will be able describe the basic operation of the valves that control the speed and operation of a typical steam turbine.

  • Identify the purpose of the main steam stop valves
  • Identify how main steam stop valves affect a unit’s operation in Bulk Electric System (BES) emergency operations
  • Identify how turbine speed control affects a unit’s ability to support normal, contingency, and emergency BES operations
  • Identify the purpose of the turbine governor and control valves
  • Identify the difference between reheat and intercept valves
  • Identify how turbine valves are manipulated by Automatic Generation Control (AGC) systems using Area Control Error (ACE) data
  • Recognize what happens during a turbine trip
  • Recall the basic operation of a flyweight governor control system
  • Identify the difference between full arc admission and partial arc admission
  • Identify common steam turbine ramp rates
  • Identify steam turbine viability as an option in normal, contingency and emergency operations

505-03 Steam Turbine Auxiliaries

When you complete this lesson, you will be able to describe the design and function of components found in a typical turbine lube oil system and gland steam seal system.

  • Identify the two primary purposes of the main turbine lube oil system
  • Describe the location and operation of the main lube oil pump and its relationship to the booster oil pump
  • Explain the purpose of the turning gear
  • Describe the operation of the gland steam seal system
  • Discuss operator role in the operation of a steam turbine

505-10 Steam Turbine Governor System

When you complete this lesson, you will be able to identify the components and function of a typical turbine governor system.

  • Identify facts pertaining to governor history
  • Recognize governor system components
  • Identify components associated with normal operations
  • Identify components associated with shutdown operations
  • Recall actions related to normal system operation