Gas Turbine Specialization Technician / Engineer Training

Giant Indo's Veritas Pvt Ltd

Gas Compression & Expansion: Compressors & Turbines (4 days)




Engineering graduates or young professionals from the technology and production departments of refineries and petrochemical plants


To provide an understanding of the performance and technology of the equipment.

Learning Objectives

  • To learn about operating characteristics.

  • To learn how to adapt to process operating conditions.

  • To learn about main operating problems.

Ways and means

  • Extensive use of digital applications related to industrial situations.

  • Specific and detailed documentation.

Giant Indo's Veritas Pvt Ltd

Gas compression and expansion (1 day)

  • Euler law, applications for compressors and turbines, characteristic curves.

  • Velocities triangle.

  • Impulse, reaction, type of blades.

  • Mach number: effect on temperature, pressure and density; subsonic and supersonic machines.

  • Dimensionless coefficients, specific speeds.

Compressors, turbines and expanders performance and operation (2 days)

  • Axial and centrifugal compressors

  • Characteristic curves: invariant representations.

  • Surge and stonewall; range of working efficiency.

  • Capacity control methods.

  • Start-up, vibration survey.

  • Steam turbines

  • Characteristics of a turbine: speed, specific consumption, efficiency.

  • Influence of inlet and exhaust steam states.

  • Speed governor and control systems.

  • Safety devices.

  • Turbo-expanders

  • Technology and main uses.

  • Safety devices.

Technology and engineering aspects of compressors and turbines (1 day)

  • Technology

  • Casings, diaphragms, stator, blades.

  • Rotor, journal and thrust bearings, internal and shaft seals, coupling.

  • Balance and critical speeds.

  • Lubrication and seal systems.

  • Typical mechanical incidents.

  • Engineering

  • API specifications.

  • Information required for bidding. Factory acceptance tests

Giant Indo's Veritas Pvt Ltd

Reciprocating Compressors (5 days)




Engineers and technical staff involved in the operation, inspection and maintenance of reciprocating compressors.


To improve participants skills in mastering the operation of reciprocating compressors.

Learning Objectives

  • To identify the different process and auxiliary circuits, the different parts of a compressor and explain their role.

  • To explain the evolution of compressor operating parameters.

  • To implement appropriate monitoring for every specific compressor.

  • To be involved in troubleshooting activities.

  • To communicate efficiently with staff from other departments.

Ways and means

  • Actual examples from the upstream, refining, petrochemical and chemical industries.

  • Trainee participation is continuously encouraged through case studies selected by the lecturer or proposed by the trainees themselves.

  • Using a dynamic simulator to illustrate phases of start-up, shutdown, including some upsets generated by the instructor.

Technology (1.5 days)

  • Construction and design philosophies.

  • Components of reciprocating compressors: frame, cylinders, piston and rings, piston rod and crank head, crankshaft and connecting rods, bearings, compartment distance piece, specific emphasis on valves.

  • Auxiliary systems: pulsation dampeners, crankshaft and cylinders lubrication, and cooling systems, safety devices.

Giant Indo's Veritas Pvt Ltd

Performances (1 day)

  • Ideal gas compression: discharge temperature, power.

  • Actual compression: valve behavior, leakages, internal thermal exchanges.

  • Indicator diagram.

  • Efficiency, compression power.

  • Case studies: discharge temperature and power calculation, indicator card plotting, efficiency calculation.

Compressor process operation (0.5 day)

  • Start-up, shutdown.

  • Capacity control.

  • Influence of: compression ratio, gas composition, suction temperature.

  • Multistage compressors: behavior.

  • Case study: air compression.

Maintenance and troubleshooting (1 day)

  • General aspects: noise, vibration, temperature; monitoring.

  • Typical defects and failures on: valves, piston rings and packings, piston rod, etc.

  • Dismantling and assembly procedures and reports.

  • Case studies: typical failures encountered in reciprocating compressors

Gas Turbines Certification (5 days)




Engineers and managers involved in gas turbine operation, maintenance, engineering and purchasing.


To deepen knowledge about gas turbine technology and enhance competency in the selection, operation and maintenance of gas turbines.

Giant Indo's Veritas Pvt Ltd

Learning Objectives

  • To explain gas turbine operation.

  • To explain selection criteria based on process and on-site conditions.

  • To participate in gas turbine troubleshooting.

  • To create a gas turbine maintenance schedule.

Ways and means

  • Study of industrial cases.

  • Various illustrations of actual systems.

  • Interactive group study of gas turbine drawings.

Gas turbine equipment (2 days)

  • Classification: typical cycles, heavy duty and aeroderivative designs, applications.

  • Presentation: main components. Typical machines available on the market.

  • Construction and design: compression, combustion, expansion. Rotor dynamics, coupling.

  • Ancillary equipment

  • Internal cooling, lubrication, control system, safety devices.

  • External ancillaries: filtering, exhaust stack.

Performance (1.5 days)

  • Thermodynamics: ideal and actual gas, behavior during compression and expansion, isentropic and polytropic processes.

  • Centrifugal and axial compression. Performance, stability and other limits.

  • Combustion: types of combustors, combustion operation. Influence of fuel type. Afterburning for cogeneration purposes. Low NOx designs.

  • Expansion: single or double shaft design operation.

  • Performance influence of atmospheric conditions, fuel selection. API charts.

  • Available load characteristics: rotation speed, T3 firing temperature, IGV influences. Open cycle, combined cycle examples.

  • Case studies: actual performance vs. basic design; troubleshooting.

Selection (0.5 day)

  • Selection criteria according to availability, operational and maintenance requirements.

  • Bidding: significant information for data sheet definition.

Operation (1 day)

  • Start-up and shutdown operation: sequences and trips.

  • Air filtering, lubrication and fuel systems operation.

  • Performance monitoring and mechanical operation.

  • Maintenance during operation: compressor cleaning devices.

  • Maintenance objectives and scheduling: operation, load, fuel influences; inspection schedules.

  • Factors related to available load: rotation speed, T3, IGV. Typical approaches related to Brayton cycle, cogeneration (combined cycle).