June, 2019 - Gas Turbine Failure Modes, Troubleshooting, Condition-Based Maintenance

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June 14, 2019 in Sophia Antipolis, France

This course is presented in partnership with TG-Advisers, Inc.

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This course provides each delegate with a detailed and applied review of the most common turbine failure modes. Our instructors will focus on risk informed repair and life extension strategies which have a significant bottom line impact. The course will also offer best practices and maintenance considerations for flexible operation which typically includes more cycling, lower minimum loads, and greater capacity ratings. All modules are supplemented with current case studies demonstrating the applied techniques. Eligible for professional certifications.

Who Should Attend?

This course is designed for plant maintenance and operations personnel, consultants, loss control engineers, and central staff responsible for aero-derivative, simple cycle and combined-cycle power plants. Ideal for those needing to complete pdh credits in 2019.

Course Syllabus

Course Training Modules

MODULE 1 – Gas Turbine Design Fundamentals, Technology Enhancements and Failure Modes

• Blade design – materials, blade root and airfoil design, coatings
• Inlet guide vanes – function, mechanical design, inspections

• Technologies – overview of different combustion designs and key attributes
• Design of combustion components – introduction, materials, coatings, and function
• Emissions control – enhancements to reduce emissions

Hot Gas Path:
• Blade design – inlet vs. aft stage blades, blade casting and internal cooling design
• Stationary blade design – singlet vs. doublet/triplet design, heat transfer and cooling
• Design life and failure modes – base loaded vs. cycling, limiting failure mode vs. location in hot gas path
• Material upgrades – grain structure, alloys
• Coating systems – oxidation protection vs. thermal barrier coatings, application processes, evaluation of remaining life
• Cooling systems – overview of cooling techniques, types of cooling holes
• Upgrade/retrofit opportunities – overview of new offerings and benefits

Rotor Design
• Construction – disc, spacers, through bolts, aero derivative vs. frame machine
• Materials – materials vs. location in engine

Failure Modes
• Creep – overview of mechanism, detection, life of parts and which parts are limited
• Oxidation – overview of mechanism, coatings to protect against, repair limitations
• Thermal mechanical fatigue – overview of mechanism, detection, life of parts and which parts are limited
• High cycle fatigue – overview of mechanism and impacted components
• Foreign and domestic object damage – sources of material, ways to protect against

MODULE 2 – Gas Turbine Operations, Maintenance, and Repair Technology

Operating Parameters and Impact on Life
• Fuel type – impact of fuel type of intervals and part life
• Firing temperatures – reduction/extension in life based on actual firing temperature vs. design
• Inlet temperatures – impact on part life and power output
• Inlet chilling/wet compression – overview of power augmentation techniques, impact on maintenance intervals
• Fast starts – reduction of life based on starting time

Maintenance Intervals & Repair
• Equivalent operating hours approach (EOH) – pluses and minuses of using an EOH vs. an hour or start based criteria for maintenance intervals
• Condition based maintenance approaches ¬– which parts are applicable, how to avoid unnecessary spend
• Borescope inspections – how to interpret results, what to look for and frequency of inspection
• Combustion inspections – included items, rotatable parts
• Hot gas path inspections – included items, rotatable parts
• Major inspections – included items, scope of inspection/repair
• Water washes, online and offline – pros/cons of online vs. offline water washes, performance benefits
• Inspection techniques – NDE techniques, detectable limits, repair limits
• Keys to successful part overhaul – coating quality, crack repair, blade restoration



The registration fee for the course is 1400€ per person and includes all course materials, as well as a lunch each day of the course. Early-bird discount of 15% applies until 28 February, 2019.  Discount of 20% if included in the booking of a full track (five days of courses) or if any company books five or more days of courses in total for their staff.

To register or for more information, please contact Christine Vallon, or call our European office at +33 4 92 96 92 54.

About Us

Established in 1988, Tetra Engineering has more than 25 years experience providing solutions to the power industry. We specialize in solutions for HRSGs, conventional boilers & steam-cycle balance of plant.


Our Locations

Offices in: Connecticut, USA; Nice, France; Dubai, UAE.