Lesson 1 - Turbines

Topics:

Types; Operating principles; Condensers; Heat rejection; Thermal pollution; Boiler, turbine, and generator efficiency

Learning Objectives:
– Name the five main parts of a steam turbine system and explain the function of each.
– Contrast the operating principle of an impulse turbine and a reaction turbine.
– Define the terms tandem compound and cross compound.
– Explain how a condenser improves turbine efficiency.
– Explain how an overspeed trip is activated.
– List three causes of turbine rotor vibration.
– Name the main cause of bearing failure in a turbine.

Lesson 2 - Boiler Instrumentation, Controls, and Safety

Topics:

Boiler Instrumentation, Controls, and Safety - Pressure, flow, and temperature gauges; Manometers; Water glasses; Combustion and feedwater control; Safety devices

Learning Objectives:
– Define the term variable.
– Describe the three main classes of boiler instruments.
– List the four variables on which boiler instrumentation usually provides data.
– Name the four common types of pressure gauges, and describe the characteristics and uses of each.
– Name and describe the three types of flowmeters commonly used in power plants.
– Name and describe the four types of temperature gauges commonly used in power plants.
– Describe the uses for gauge glass assemblies in power plant instrumentation.
– Explain the purpose of combustion control systems and describe the three basic kinds.
– Describe the three kinds of feedwater regulators.
– Explain the importance of safety valves and flame safety devices in power plants.


Lesson 3 - Electrical Power Fundamentals

Topics:

Power in DC circuits; AC current; Generators; Phase difference; Power factor; Three-phase systems; Transformers; Metering principles

Learning Objectives:
– Explain the basic principles of electricity and electric power, including the significance of Ohm's Law
– Identify the parts of an electrical circuit and describe the function of each part
– Contrast series and parallel circuits
– Explain the difference between the two main groups of generators and further describe each group in terms of its sources of mechanical power
– Define phase difference and power factor, and describe a three-phase system
– Explain the function of a transformer
– Describe the variety of metering instruments used to measure the value of electric energy
– Explain the purpose of an electric distribution system, and list the three main kinds
– Name four kinds of protective equipment used in power systems


Lesson 4 - Electrical Systems Analysis

Topics:

Demand considerations, analysis, and cost; Power factor correction; Synchronous motors; Transformer losses; Maintenance

Learning Objectives:
– Explain the purpose of a line diagram.
– List the four kinds of charges normally found on a power bill.
– Define peak demand.
– Calculate a plant's load factor.
– Describe the steps involved in performing demand analysis.
– Calculate demand cost and explain the effect of short demand peaks on billing.
– Define power factor and explain how it is calculated, what causes it to be low, and how it can be improved.
– List the types of power losses that occur in transformers and describe the cause of each.
– Explain how to maintain protective devices, cable systems, and generators and motors.
– Explain the importance of energy conservation in power plants.


Lesson 5 - Air-Conditioning Systems

Topics:

Basic cycle; Compressors; Condensers; Evaporators; Metering devices; Accessories; Controls; Air handling; Maintenance practices

Learning Objectives:
– Define relative humidity and explain how it is measured
– Define the terms refrigeration ton and refrigeration effect used in air-conditioning systems
– Name and describe the three kinds of condensers used in air-conditioning systems
– List the metering devices used in an air-conditioning system and explain their uses
– List the accessories and controls that are found in an air-conditioning system and state their purposes
– Describe the air-handling system and its components
– Explain how to measure velocity pressure and static pressure
– Explain several maintenance practices that will improve the efficiency of an air-conditioning system.