Course Description

This course familiarizes personnel with the architecture and function of the main parts, of the annular combustor engine.  Includes, maintenance overview, inspection preparation, EHS and O&M documentation, radial rotor position, EV burners and lances, tool handling and borescope.

This course is intended for personnel that are unfamiliar with or have limited knowledge of GE gas turbine maintenance. For those who may work in affiliated industries and wish to gain an understanding of the routine maintenance requirements of GE heavy duty gas turbines.

Duration

5 Days

Target Audience

•     Mechanical Maintenance

Prerequisites

Participants should have:

• Instruction is given in English, therefore a reasonable ability to read and understand spoken English is required
• Have elementary background of power plants
• Be able to read technical documents
• Have a mechanical background
• Be familiar with the service or erection of power plants
• Have general knowledge about gas turbine hardware

Class Size

Maximum number of students: 10

Learning Objectives

This course will provide basic knowledge on the following:

• Understand the architecture and function of an annular combustor engine
• State the purpose and the duration of the three types of inspection on the gas turbine (A, B, C)
• Describe and carry out the required measurements before, during and after an A, B or C-inspection. (C-Inspection in summarizing form only)
• Describe the correct use of the relevant documentation such as Test Certificates, Procedures and O&M Manuals
• Select and correctly use of the relevant special tools, for performing the tasks required for an inspection
• Perform in-situ Radial Rotor Position measurements, calculations and possible adjustments
• Describe and apply the disassembly and re-assembly of:
  • EV Burners, EV and SEV Lances
  • Flame Monitors
  • Pulsation Probes EV and SEV, Ignition Probes
• Describe the function of the installed Instrumentation
• Perform an in-situ Borescope preparations and inspections
• Apply all EHS procedures relevant to the task

Course Content

Introduction

1. Instructor background
2. Participant background
3. Course schedule

LESSON 1 - OVERVIEW

1. Function and architecture of the main parts of the annular combustor engine
2. Gas turbine maintenance overview
3. A, B and C Inspections
4. Inspection preparations: Site setup, material and special tools

LESSON 2 – DOCUMENTS, INSTRUMENTS AND RRP

1. Documentation: EHS, O&M manuals, Test Certificates, procedures
2. Explanation of the installed instrumentation
3. Description and operation of the Borescope
4. Radial Rotor position calculation and alignment of the components

LESSON 3 – HANDS ON TRAINING

1. Hands-on training which is performed on a GT24 thermal block includes:
   1. Measuring the Radial Rotor Position
   2. Calculate and apply corrections on the radial rotor position, by moving the inner modules (Turbine side Bearing Pedestal, Turbine Vane Carrier)
   3. Disassembly, inspection and reassembly of EV Burners and Lances, SEV Lances, EV and SEV Pulsation Probes, Flame Monitors and Ignition Torches
   4. Measure the position and apply adjustments of the EV and SEV pulsation probes and flame monitors
   5. Inspection with the Borescope
2. Handling of task relevant tools

Methods of Training

• Classroom theoretical training that includes presentations, group works, open discussions and exercises
• Practical work on the GT24 Thermal Block