CT307- Gas Turbine Normal/Abnormal Operations

2 days - 1.3 Continuing Education Units Awarded

The course discusses proper operation of a gas turbine from the perspective of the control room operators. (Auxiliary Operators, Shift Supervisors, and new Engineers can gain from this presentation as well.)  To operate a machine safely and for the long-term, we need to have a good understanding of the basic theory, we need to know how different components might be placed at risk, we need to understand how the control system “thinks”, we need to know how and when the protective systems should react, and we need to know the importance of proper operation of the auxiliary systems.   With respect to the protective systems, we need to understand the symptoms of some of the common problems, what actions the operator should (or should not) take, what actions protective systems should take, and when.  This course discusses all of this in a generic fashion (that is not necessary specific to any given machine).  A good big-picture is required to become a “skilled operator” and this course takes us down that path.

OBJECTIVES
Upon successful completion of this course the participant should be able to:

1. Describe the relationship of the various turbine components and how they may be at risk during operations
2. Describe the different fuel systems used in gas turbine operations
3. For each of the gas turbine auxiliary systems (cooling & sealing air, lube oil systems, fuel forwarding, control and hydraulic oil) describe the systems' purpose, normal operations, and abnormal conditions
4. Given a gas turbine control system block diagram, sequence the turbine through a start up, load changes, shutdown, and emergency conditions
5. Describe the major components associated with a generator
6. Describe emergency condition response for both the gas turbine and generator

COURSE OUTLINE

1. Day One
   1. Review of Gas Turbine Theory
   2. Review of Gas Turbine Construction & Operating Principles:  Air Inlet Guide Vane & Casing, Compressor Stator, Compressor Rotor, Combustion Section, Turbine Stator, Turbine Rotor, Exhaust Section, Bearings
   3. Auxiliary Systems, Schematic Piping Diagrams, Device Summary, Lube Oil and Hydraulic Supply, Trip Oil and Control Oil, Cooling and Sealing Air, Cooling Water 
2. Day Two
   1. Control Principles: Start Up Sequencing, Speed Control, Temperature Control, NOx, Servo Valve Drive Systems, Overspeed / Over Temperature, Protective Circuits
   2. Abnormal Conditions and Response