Training Gas Turbine Material

Training Gas Turbine Material

OBJECTIVE 

OUTLINE

1. Overview of Gas Turbine Technology and Applications
   Simple cycle Gas Turbines; cycle considerations; applications; fuels and corrosion; emissions; combined cycle and cogeneration. Overview of Developments
   High temperature turbines, reheat turbines, close cycles, and other developments.
2. Rotating Components and Matching
   Brief overview of compressor and turbine design; component characteristics and matching. Compressor surge and prevention.
3.  Vibration and Rotor Dynamics
   A review of vibration will include specific problems such as Blade Vibration and Shaft Critical Speeds. Case histories will link vibration with the fatigue failure of components. Rotor instability, in its various forms, will be discussed. Vibration spectrum analysis will be utilised for the solution of resonance, instability, and gear and blade problems. Campbell (Spoke) diagrams and Critical Speed maps will be derived and used for the solution of vibration and Rotor Dynamic problems. The design and performance of Squeeze-Film Damper Bearings for overcoming many of the problems associated with machine unbalance and critical speeds, will be covered.
4. Combustors and Fuels
   A description of combustor types, chamber design, fuel atomisation, ignition and combustor arrangements will be presented. Also discussed will be the constraints imposed by fuels on the design and operation of the hardware. The wide spectrum of fuels, both gaseous and liquid, is examined. An overview of fuel treatment and additives will be made.
5. Performance Analysis
   Basic thermodynamic aspects of stationary Gas Turbines. Design and off-design operation. Influence of site effects on typical performance maps. Variable geometry compressor and turbine status.
6. Performance Analysis for Problem Detection
   The fundamental concepts of performance analysis as a tool for saving energy costs are discussed. Basic and applied thermodynamics will be reviewed for gas turbines. The use of performance data to pinpoint problem areas will be discussed. Diagnostics related to fouling, nozzle erosion, bowing surge, choke, etc. will be covered. Meaningful trending methods will also be discussed.
7. Gas Path Analysis for Stationary Gas Turbines – Status
   Simulation of degraded Gas Turbines, derivation and application of fault coefficient matrix, fault trees and other techniques. Implications for component life and emissions.
8. Gas Turbine Fouling
   The causes, effects and detection of fouling in axial compressors will be covered including aero thermodynamic effects, effects on surge margin, intake distortion and blading problems. Filtration and control techniques will be covered.
9. Gas Turbine Repair
   The techniques of inspection and repair of gas turbines are described in detail, including NDT techniques, cleaning, plating, heat treatment, welding, etc.
10. Maintenance
    Case histories of various types of failures and maintenance problems of onshore and offshore gas turbine compressor installations are discussed. Maintenance techniques using bore scope and spectrum analysis including acoustic monitoring are discussed. Techniques for checking and conducting repairs on impellers, diffusers, bearings, couplings, and foundation repair are emphasised.
11. Special Considerations for CHP Gas Turbines
    This section will cover special considerations in design, operation and maintenance of turbines and associated equipment on Cogeneration Services. Several cases will be covered. Off design operation effects on HRSG, STTG Cycles and evaporate cooling will be covered.

PARTICIPANTS