TG504 - (GE-LSTG) EHC Mk-II Steam Turbine Controls

5 days - 3.2 Continuing Education Units Awarded

Seminar describes inputs/outputs, their function, how they facilitate turbine operation as well as calibration and troubleshooting. Insight is given as to why the circuits are designed as they are, priorities for calibration, need for accuracy and calibration techniques as only an HPC Certified Instructor can accomplish.

Recommended for Engineers and E&I Technicians.

Note: Seminar length has been reduced to fit a 5-day accelerated schedule. Some materials will be forwarded in advance of class attendance to facilitate this effort.

OBJECTIVES

1. Participant will be able to describe the relationship of all control components to each other component and the overall system, using a block diagram.
2. Participants will be able to demonstrate the ability to use GE prints and schematics.
3. Participants will be able to describe operation of the individual steam valve control devices and the front standard trip and reset devices.
4. Participants will be able to describe the output of each major subsystem in terms of the inputs and all internally generated signals. Subsystems include: Flow Control, Load Control, and Speed Control.
5. Participants will be able to demonstrate the knowledge needed to troubleshoot analog and logic control systems.
6. Participants will be able to demonstrate the knowledge needed to evaluate the OEM Line-Up Procedures to evaluate and recalibrate the various systems.

Seminar OUTLINE

1. Day One: Introduction ( Seminar Outline & Objectives), Control Panel Operation, Valve Actuators, Front Standard Mechanism Operation, Hydraulic Power Unit, Operational Amplifiers Fundamentals Overview (big picture block diagram) and Equipment Fundamentals, Prints and Drawing Practices
2. Day Two:, AC/DC Power and Ground, Speed Control Unit - (Low Value Gates, Speed/Acceleration References, F/V Converters, Wobbulator, Speed Control Calibration
3. Day Three: Load Control Unit - (Stop Valve Amplifier, Intercept Valve Amplifier, Control Valve Amplifier, Load Reference Amplifier, Load Limit/Runback Circuits, Stage Pressure Feedback, FA/PA Circuitry, Load Control Calibration), Protective Systems - Power Load Unbalance, Early Valve Actuation, Trip Anticipator, Backup Overspeed Trip; Standby Control, Plant Communications
4. Day Four: Flow Control Unit - (Admission Modes, Valve Position Units, EL vs. EF, Diode Function Generator, Valve Testing, Crack Point, Failure Modes, Valve Setting Procedures, Valve Test Logic, Main Stop Valve Logic, Control Valve Logic, Combined Valve Logic, AMS Discussions)
5. Day Five: Trip and Monitoring, Big Picture Schematic Discussions, Maintenance, Seminar Conclusion

Satisfied Clients Include:

• Amerenergy – Clinton Nuclear Power Station
• Entergy Operations - Riverside Nuclear Plant
• First Energy – Bruce Mansfield Station and Perry Nuclear Station
• Louisville Gas & Electric - Trimble County
• Lower Colorado River Authority
• MidAmerican Energy - Council Bluffs and Neal Stations
• North Atlantic Energy Services - Seabrook Nuclear Plant
• Pennsylvania Power - Bruce Mansfield
• Southern Nuclear Operations – Plant Vogtle Nuclear Station
• Texas Municipal Power Agency – Gibbons Creek Station
• Wisconsin Power & Light - Columbia Station
• Wisconsin Public Service - Weston Station