TG431 - Management Overview of Steam Turbine Generator O&M

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3.5 days - 2.2 Continuing Education Units Awarded


Course Dates Download Brochure PDF
USD 2,495.00

This course was organized recognizing that there are a greater number of power plant managers and support personnel who are not “engineers” and/or who have not “come-up-thru-the ranks”.  This being the case, HPC has encountered a significant number of these personnel sitting in on our “operations” or “maintenance” courses.  When quizzed why they are in this particular course the answer has been that have a need to better understand the operations & maintenance of these turbine-generator sets, such that they can:

  1. Ask better questions (and understand the answers) of plant O&M personnel;
  2. Have better appreciation of how/why the major components are at risk; and
  3. Better understand why the plant engineer might argue so vehemently regarding a particular repair / replace / resuse decision.

To accomplish this, HPC’s Management Overview course will start with a fundamental description of the process and components, then provide an overview of operations, and end with an overview of maintenance.  All of this presented with an “eye” to the plant management’s perspective.

Topical outline includes: Steam Turbine Principles, Component Descriptions, Main Steam Valves, Intro to Turbine Controls, Overview of Turbine Operations, Overview of Turbine Maintenance, Generator Fundamentals, Generator Components, Overview of Generator O&M, and Operational Audits.

Note: This course may be equally as valuable to corporate personnel who have a better need to understand steam turbine generator equipment operational and/or maintenance issues.

OBJECTIVES:
At the completion of this Seminar the participant will be able to:

  1. Describe, in fundamental terms, the steam turbine energy conversion process.
  2. Given a cross-sectional diagram, identify and describe the purpose of the major steam turbine components.
  3. Describe the purpose of the major steam turbine valves.
  4. Demonstrate an understanding of how/why the steam turbine inlet valves are positioned.
  5. Describe why and how operations control the turbine heating process during turbine startup.
  6. List the 10 most common abnormal events that could cause considerable steam turbine damage.
  7. List the 10 most common causes of steam turbine distress.
  8. Describe the most fundamental cause of each of these listed forms of steam turbine distress.
  9. Describe, in fundamental terms, the different corrective action(s) that might be taken, given an identified form of steam turbine distress.
  10. Describe, in fundamental terms, the transformation of mechanical energy to electrical energy.
  11. Given a cross-sectional diagram, identify and describe the purpose of the major generator components.
  12. Demonstrate knowledge of how the voltage regulator responds to system events.
  13. List the 10 most common abnormal events that could cause considerable generator damage.
  14. List the 10 most common causes of generator distress.
  15. Describe the most fundamental cause of each of these listed forms of generator distress.
  16. Describe, in fundamental terms, the different corrective action(s) that might be taken, given an identified form of generator distress.
  17. Describe the 5 most common causes of loss of steam-turbine generator efficiency.

SEMINAR OUTLINE:

  1. Day One:
    1. Steam Turbine Operating Principles: Fundamental Theory, Impulse and Reaction Turbines
    2. Turbine Component Construction: Turbine Sections, Shells, Casings, Cylinders, HP-IP/LP, Nozzles/Diaphragms, Stationary Blades, Turbine Seals, Turbine Rotors/Spindles, Blades/Buckets, Standards/Pedestals, Bearings
    3. Main Steam Valves: Steam Chests, Main Stop/Throttle Valve, Control/Governor Valve, Reheat Valves, Auxiliary Steam Valves
    4. Turbine Controls:  3 Laws of Turbine Controls, Response to Frequency Deviation, Protection
  2. Day Two:
    1. Turbine Operation:  Available Instrumentation, Thermal Stress, Fatigue, Starting/Loading Considerations, Operational Risks to Steam Turbine
    2. Turbine Maintenance: Types of Distress, Planning, Inspection of Steam Path Components
  3. Day Three:
    1. Turbine Maintenance: Repair/Replace/Reuse Evaluation
    2. Generator Fundamentals: Generation of AC Power, Synchronism, Air-Gap Magnetic Fields
    3. Generator Construction: Stator, Frame, Coolers, High Voltage Bushings, Stator Core, Stator Windings, Conductor Cooling, End Shields, Generator Bearings, Rotor, Forging, Field Windings, Collector Rings & Brushes, Exciters, House Generators
    4. Generator Operation: Automatic Voltage Regulator, Synchronizing, Limitations, Operational Risks
  4. Day Four (1/2 day):
    1. Generator Maintenance:  Outage Activities, Purpose of Maintenance Activities, Electrical Testing, Repair/Replace/Reuse Decision Making Considerations