Gas Turbine Series

The objective of this course is to present the nature and purpose of different modes of maintenance, i.e. running, predictive, and preventive maintenance.

Upon completion of this course, the participant should understand and be able to apply the following concepts:

• Maintenance objectives
• Operator-maintenance coordination
• Types of maintenance, definition of: running, predictive, and preventive maintenance
• Operator observations, abnormalities, defect reports
• On-line maintenance
• Off-line maintenance, permit to work, clearance
• Concept of predictive maintenance
• Critical points of measurement
• Plotting trends of pressures and temperatures
• Interpreting trends to determine outage schedules
• Interpreting trends to determine spare parts requirements
• Performance testing; fuel consumption, heat rate
• Effect of ambient conditions, correction factors
• Vibration analysis
• Unbalance, misalignment, bearing problems
• Objective of preventive maintenance
• Pre-planned, scheduled outages for maintenance
• Scheduled tasks; inspection, replacement, repair
• Typical maintenance schedule
• Definition of inspections:
  • combustion equipment
  • hot gas path
  • major overhaul
• Factors affecting frequency of inspection
• Detailed procedure for combustion inspection
• Examination by borescope