Course Description

This course is designed to enhance GE E-Class (7EA and 9E) gas turbine generator configuration and operational knowledge and skills. The course builds on prior knowledge and experience of the attendees. It expands upon the students’ background in gas turbine-generator operation that will improve the participant’s ability to properly analyze operating problems and take the necessary corrective action. Participants are instructed in how to interpret fault annunciations and how to determine if the annunciated fault can be remedied by operator action or by the assistance of instrumentation and/or maintenance personnel. 

This course will provide a detailed understanding of gas turbine operating sequences and control and protection functions by focusing on the operational relationships of the compressor, combustion and turbine sections along with generator and auxiliary systems. Discussion on turbine auxiliary support systems is limited to key operational interfaces. 

This course is intended for those in affiliated industries who have a background in GT operations and wish to gain further understanding of the operation of GE 7EA and 9E class of heavy duty gas turbines. 

Duration

5 Days

Target Audience

• Supervisors
• Operations

Prerequisites

• Instruction is given in English; therefore, a reasonable ability to read and understand spoken English is required
• Reasonable computer skills
• Prior experience as control room or outside operator, I&C or Mechanical Technician
• Engineer or Management personnel with turbine experience
• Attended GE Gas Turbine Operation course

Class Size

Maximum number of students:  15

Learning Objectives

This course will provide basic knowledge on the following:

• Gas turbine operating sequences and modes: Start, Synchronize, Loading and Shutdown
• Control and protection functions for the turbine, generator and auxiliary systems
• Interpret and understand HMI screen graphics, information and commands
• Responding to an alarm from the HMI screen and how to locate/trace signals to the control logic.
• Alarm causes and alarm response database utilization in respect to the equipment and systems
• Maintaining availability, optimum performance and reliability by quickly addressing operational issues, alarms and recovering from a trip or Not Ready to Start condition.
• Effects of abnormal operating conditions on the turbine and generator components.
• Navigation of GE Documentation such as the O&M, P&IDs and Device Summary
• To identify nominal and alarm settings from device summary and control specifications
• How operations affect the turbine maintenance inspection intervals. 

Course Content

INTRODUCTION

A.  Instructor Background
B.  Participant Background
C.  Course Schedule 

LESSON 1

1. E-Class Turbine Theory
2. Performance and Component Review
3. Generator Component Overview

LESSON  2

1. Documentation
2. Device Summary, P&IDs and Control specifications
3. Primary Operator Interface
4. HMI Menus & Screens Review

LESSON  3

1. Alarm/Trip Documentation
2. Alarms and Trips Interpretation and Troubleshooting

LESSON  4

1. Turbine Devices and Operating Conditions
2. Combustion Systems
3. DLN 1/1+ and Standard Fuel Systems Operation
4. Fuel Control Functions
5. FSR, Startup, Speed, Loading and Temperature

LESSON  5

1. Turbine Startup Sequence Procedure
2. Synchronization and Loading
3. Generator Off Line and On-Line Operations
4. Variable Inlet Guide Vane, Inlet Bleed Heat and Compressor Bleed Valve Operation
5. Protection
6. Over Speed, Over Temperature, Vibration
7. Protection
8. Exhaust Temperature Spreads and Combustion Monitoring
9. Shutdown Sequence Procedure 

LESSON  6

1. Advanced Controls Topics
   1. OpFlex/ Enhanced Transient Stability Controls
   2. Temperature Matching
2. Operational Effects on Maintenance Intervals
3. E-Class Upgrade Options