| 
"Basic Gas Turbine Metallurgy and Repair Technology Workshop"
Sunday, June 13, 2010
Scottish Exhibition & Conference Center
Glasgow, Scotland
Overview and Objective
This workshop will explain super-alloy materials, component damage experienced
from service exposure, techniques used to analyze the remaining life of
components removed from service, protective coatings, component repair
technologies, and quality assurance of repairs. The workshop includes
many case study examples and the last section is devoted to a workshop
where attendees develop component repair solutions. Participants may submit
questions in advance regarding repair issues faced in their jobs.
After completing the course the participants should be able to
explain:
- What makes superalloys especially suited for gas turbine components
- How different damage mechanisms (oxidation, corrosion, erosion) affect
the component
- How high cycle fatigue & low cycle fatigue damage is caused,
prevented, and repaired
- Various heat treatments used in repairs, and why they are important
- Advantages & disadvantages of the many types of protective coatings
- Critical quality control steps in component repair
- How to reliably extend the service life of valuable components
Instructors
Lloyd Cooke, Director, Operations,
Liburdi Turbine Services; Warren Miglietti,
Power Systems Mfg., LLC (an Alstom owned company); Doug
Nagy, Industrial Component Repair Manager, Liburdi Turbine
Services.
Who Should Attend
A “must” for gas turbine maintenance engineers, managers,
repair shop personnel, designers, and technical staff to optimize their
repair planning and performance. Useful for business and plant managers,
investors and insurers to understand the technology and support sound
decision-making.
| Course Schedule: |
Sunday, June 13
8:30 a.m. to 5:00 p.m. |
| Section I: |
Introduction: Why repair and refurbish
parts?
- The Future for Industrial Frame GT Repairs
- Repair Market Trends
- Cost Benefit of Repairs
- Industry Trends
- The Future for Industrial Frame GT Repairs
|
| Section II: |
Gas Turbine Nomenclature, Operations and
Maintenance Planning
- Industrial Gas Turbine Nomenclature Industrial and Aero-derivative
- Typical Gas Turbine Component Materials
- Design Differences
- Advanced Design Turbine Blade Data
- Operating Modes – Industrial Engines – Industrial
Frame Engines
- Inspection and Maintenance Intervals
|
| Section III: |
Materials and Metallurgy: Gas Turbine Materials
and their Properties
- Overview of Why Superalloys are Used in a Gas Turbine
- Overview of Superalloy Production Routes
- Investment (Lost Wax) Casting
- Processing and manufacture of materials
- Superalloys Compositions and Properties
- Solid Solution Strengthening
- Precipitation Strengthening
- Grain boundary Strengthening
|
| Section IV: |
Gas Turbine Coatings
- The Role Of Engineering Coatings
- Applications
- Selection of Coatings
- Coating Microstructure and Performance
- Coating methods
- Slurries and Paints
- Pack Process
- Chemical Vapor Deposition
- Thermal Spraying
- Physical Vapor Deposition
|
| Section V: |
Degradation Characteristics in Gas Turbine
Components
- Metallurgical Effects of Service
- Creep –High Cycle Fatigue –Low Cycle Fatigue
- Environmental Attack –Oxidation –Corrosion
- Coating Degradation, Depletion, Cracking, TBC's
- Thermal Mechanical Fatigue (TMF) Damage
- Microstructural aging and evolution
|
| 12:00 p.m. – 1:00 p.m. |
Group Lunch |
| Section VI: |
Component Evaluation
- Component evaluation, where how and why
- Component Management Program
- Timing and selection of components for analysis
- Micro structural analysis
- Mechanical testing
- Coating Evaluation
- Failure Analysis
- Root Cause of Damage, and Corrective/Preventive Action
|
| Section VII: |
Refurbishment & Repair Processes: Procedures
and techniques used to restore components to industry standards.
- Typical Damage
- Coating Stripping
- Dimensional Checks
- Re-Coating Selection and Processes
- HIP and Rejuvenation Heat Treatments
- Superalloy Weld Processes
- Diffusion Brazing
|
| Section VIII: |
Quality Assurance: Methods and procedures
to verify components meet industry standards.
- QA Certification, Inspections and Quality Plan
- NDE Defect Criteria
- Dimensional Specification
- NDE Inspection techniques
- Repair Shop Selection and Qualifications
|
| Section IX: |
Case Studies & Problem Solving:
Case Studies of Turbine component damage and repair strategies
|
| Section X: |
Round Table Discussion:
- Discussion of the latest repair trends
- Student questions
|
| 5:00 p.m. |
Wrap-up and Evaluation |
|
