Gas TurbinesROT/GT

Who should attend?

  • This course provides a thorough knowledge of gas turbine functioning, technology, operation and maintenance.
Audience :
  • Engineers and technical executives involved in the definition, study, operation and maintenance of industrial gas turbines.

Level : Proficiency

Course Content

  • PRESENTATION & CLASSIFICATION

      • Presentation: history, functions of the different elements, machines available on the markets, evolution.
      • Classification: uses and architectures.
  • APPLIED THERMODYNAMICS

      • Brayton cycle and real cycle.
      • Isentropic efficiency of compressor and expansion turbine.
      • Cycle developments (combined cycles, cogeneration…).
      • Ability to do energy and power balances, cycle and engine efficiency calculations…
      • Application exercises.
  • TECHNOLOGY & OPERATION

      • On-site integration.
      • Technology, operation and axial compressor functions: IGV, VGV, triangle of velocities, flow rate adjustment, pumping. Air for combustion, cooling, oil containment.
      • Combustion chamber: types, burners, internals, materials, low NOx technology.
      • Turbine: technology and operation, power consumption, materials, vane manufacturing process, impulse and reaction turbines.
      • Performance related to ambient conditions, the fuel chosen.
      • Support and guiding of rotors: bearings, thrust, materials, oil containment and temperature issue.
      • Usual damage and problems on compressor, combustion chamber and turbine.
  • COMBUSTION & POLLUTANTS

      • Fuels: types and properties, pollutants, WOBBE index, PCI.
      • Convention combustion and low NOx combustion.
      • Low NOx combustion: combustion chamber types, combustion operation, influence of fuel.
      • Main pollutants and current strategies to reduce emissions of these pollutants (steam injection, DLE, recombination with ammonia).
  • CIRCUITS & AUXILIARIES

      • Air, oil, fuel circuits. Safety equipment.
      • Starter, rachet.
      • Washing of compressor and turbine.
      • Reading the P&ID of the gas turbine main circuits:
      • Start-up and hydraulic rachet assembly.
      • Sealing and cooling air.
      • Fire safety.
      • Compressor washing.
      • Fuel.
      • Lubrication oil.
      • Control oil.
      • Monitoring.
  • OPERATION & PERFORMANCES

      • Startup and shutdown sequences.
      • Control and safety system.
      • Functioning on several fuels and impact.
      • Load adjustment.
      • Operating parameters: speed, critical T3, IGV. Examples of open-cycle and cogeneration (combined cycle) strategies.
      • Monitoring of the inlet fluid quality (air, fuel oil): thresholds.
      • Main problems listed and degradation mechanisms.
  • INSPECTION & MAINTENANCE

      • Notion of maintenance plan.
      • Influence of the operating conditions.
      • Endoscopic examination.
      • Elements of inspection on hot equipment and of general review.

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • understand gas turbine functioning and operation,
  • define the selection criteria of a gas turbine,
  • take part in diagnosis following incidents on these machines,
  • know the main maintenance operations.

Ways & Means

  • Study of real cases corresponding to industrial situations.
  • Various training supports: presentation supports, manufacturer’s documentation, operator’s instructions, P&ID.