After completion of this module, the participant will be able to understand the following concepts, and apply them in day-to-day work activities.

• The construction and function of major components.
• The simple cycle industrial gas turbine.
• The aero derivative gas turbine.
• The front end mounted generator.
• Heat recovery.
• Production of steam in the HRSG.
• Steam supply for co-generation.
• Steam turbine cycle.
• Function of the steam turbine condenser
• Relation between steam turbine power output and gas turbine power output in combined cycle.
• The two two-one configuration, i.e. two gas turbines feeding one steam turbine.
• Combined cycle efficiency compared with fossil fired condensing steam turbine cycle efficiency.
• Advantages of the combined cycle.
• Typical auxiliary systems required to support the major components.
• Typical gas turbine auxiliary systems.
• Typical generator auxiliary systems.
• Control of gaseous emissions to meet environmental standards.
• Monitoring and control systems.
• Steam turbine generator auxiliary systems.
• HRSG auxiliary systems.
• Features of supplementary firing.
• Objectives and responsibilities of the operating team.
• Plant safety.
• Plant maintenance.

After completion of this module, the participant will be able to understand the following concepts and apply them in day-to-day work activities:

• The objective of operating procedures.
• Preparation of operating procedures.
• Knowledge gained by operating personnel during preparation of operating procedures.
• Power plant general service systems.
• Procedure for priming piping systems and vessels.
• Effect of air in a fluid system.
• Procedure for priming a feedwater pump.
• Operation vents and drains on piping systems.
• Operation of steam piping systems.
• Dealing with piping expansion and condensation of steam in pipe work.
• Procedure for charging a steam pipeline.
• Control of pressure and temperature rise in piping systems.
• Generic procedure for start-up of a simple cycle gas turbine.
• Pre-start inspection.
• Gas turbine support systems.
• Start-up cranking system.
• Typical start-up curve.
• The need for purging.
• Factors affecting ignition and consequence of flame-out.
• Turbine warm-up.
• The significance of self-sustaining speed.
• Pre-synchronizing operations.
• Conditions required for synchronizing.
• Gas turbine minimum load.
• Generic procedure for a steam turbine generator start-up.
• Pre-start inspection.
• Steam turbine auxiliary systems.
• Starting up the circulating water system and priming the condenser.
• Pulling vacuum.
• Function of the turbine stop valve internal bypass.
• Partial arc steam admission to the turbine.
• Full arc steam admission to the turbine.
• Raising speed-start-up curve.
• Hot and cold start-up requirements.
• Condensate recirculation.
• Turbine supervisory monitoring.
• Expansion of turbine components with steam temperature and loading.
• The need for matching temperatures before admitting steam to the turbine.
• Turbine subsystem procedures.
• Generic procedures for start-up of a single pressure natural circulation HRSG.
• Control of heat input to the HRSG.
• Effect of gas turbine output on exhaust gas temperature.
• Function of the HRSG gas bypass.
• Function of the steam dump to the condenser via the steam bypass valve.
• HRSG water level control including the effects of shrink and swell.
• Coordination of the operation of major components during a combined cycle start-up.