The Gas Turbine & Centrifugal Compressor Course
DAY 1
9:00-10:00am Registration
10:00am-5:00pm Course
Overview of Turbomachines and Turbomachinery Specifications
An overview and survey of turbomachines covering both mechanical and performance aspects is made as a foundation for the rest of the course. Major characteristics are accounted
for in the selection of turbomachines, such as the layout, environment and arrangement, including general mechanical and aerothermal characteristics or turbomachines. Various
API Codes covering compressors, gas turbines, gears, lubrication and instrumentation will be discussed. An emphasis is placed on specifying and designing for maximum reliability.
Compressor Sizing and Selection
This section describes the general purchasing procedures and types of compressor information to be considered, especially those described in API 617, in the selection of re-injection
and pipeline compressors.
DAY 2
8:30am Coffee
9:00am-5:00pm Course
Centrifugal Compressors - Surge and Surge Detection
This section deals with an in-depth analysis of centrifugal compressor design and analysis. Discussion of the impeller design as it affects pre-rotation at the inlet as well
as slip conditions at the exit are discussed in detail. Design parameters as applicable to surge and choke margins are fully analyzed. Losses in the impeller and diffuser are
described. Description of surge and methods of detecting and controlling this phenomenon are discussed here. Both static and dynamic surge detection devices are studied. Control
aspects and practical considerations are discussed.
DAY 3
8:30am Coffee
9:00am-5:00pm Course
Gas Turbine Technology
In this section, various types and sizes of gas turbines used in the petrochemical industry are discussed, along with their classifications by size and application. Comparison
is made between industrial and aircraft derivative type of gas turbines. Methods of increasing cycle efficiency and the output power are also discussed. An overview of fuels
and materials considerations will be made. State of the art developments in gas turbine technology will also be reviewed. High temperature turbines, closed cycles and other developments
are covered.
Axial Flow Compressors and Turbines
Key aerothermodynamic considerations are covered including cycle analysis of gas turbines and centrifugal compressors. Gas turbine performance calculations will also be covered.
This section also covers mechanical, performance and aerodynamic aspects of gas turbines. Radial inflow turbines are also discussed. Practical aspects related to gas turbines
is emphasized in the discussion.
Combustors, Materials Coatings and Fuels
A description of combustor types, chamber design, fuel atomization, ignition and combustor arrangements are presented. Metallurgical aspects of gas turbine blading, turbine
wheel alloys, future materials and gas turbine coatings are discussed. The stress-time behavior of materials is also covered. Common failure modes and cases are presented. Sulphidation
properties, specifications, fuel treatments and heavy fuel operation is discussed.
Coatings as applied to both the Hot Section Components and the Compressor will be discussed from both a life and performance point of view.
Fuels
Discussion on various types of fuels will be conducted from Natural Gas to Heavy Fuel Oil to Low Btu Gas. The behavior of the Gas Turbines on these different fuels will be studied
as to their effect on gas turbine performance including the effect on gas turbine compressor surge and on the Heat recovery unit as well as on duct burners if used in the system.
DAY 4
8:30am Coffee
9:00am-3:00pm Course
Rotor Dynamics and Bearings
Vibration theory for free and forced systems is discussed. Effects of damping are presented. Application of theory to rotating machinery including critical speed analysis is
discussed. Special emphasis is given on instability problems with high performance compressors. Problems of journal bearings, tilting pad bearings, pressure dam bearings and
squeeze film damper bearings are dealt with in detail. Also discussed are problems with thrust bearings of various types. Problems of misalignment, oil whip and rub are discussed.
Application problems with non-contact and various types of face seals are discussed.
Instrumentation
An overview of instruments used for monitoring and diagnostics of TurboMachinery is presented. Instrumentation covered includes pressure, temperature, flow, vibration, torque,
etc. Real-time analysis, balancing, instrumentation, signal tape recorders, and various types of analyzers will be discussed.
Maintenance
Case histories of various types of failures and maintenance problems of onshore and offshore gas turbine compressor installations are discussed. Maintenance techniques using
borescope and spectrum analysis, including acoustic monitoring are discussed. Techniques for checking and conducting repairs on impellers, diffusers, bearings and foundation
repairs are emphasized.
Performance Testing
Test planning, classification of tests, data collecting and computational methods are discussed in this section. It covers testing both in the field and at the vendors closed
loop facilities.
| Organized by: |
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in association with
The Boyce Consultancy LLC |
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