The evolution of industrial gas turbines has been a driving factor in the advancement of repair techniques for industrial gas turbine components. Turbine vane segments (also known as stationary blades, non-rotational airfoils, or nozzles) are among the many components that have been a focus for repair development. Due to increasing engine efficiencies, the design of gas turbine vane segments continues to become progressively more complex. Neoteric vanes are cast of highly developed superalloys, have complex cooling designs, and are coated with the latest generation coating systems which utilize advanced oxidation resistant bondcoatings combined with thermal barrier coatings. While advanced technologies enable these vanes to operate at the extreme hot gas path running temperatures of today’s engines, they also significantly increase the level of technology required to successfully repair them. The ability to repair these components is essential to minimize the operators’ life cycle cost of the gas turbine. Recoating, reestablishing of critical cooling, dimensional restoration, along with surface and structural restoration using high strength weld and braze techniques are essential for these vanes. Conventional and advanced repair techniques are key elements in the continuing evolution of industrial gas turbine component repair development. This paper will focus on a variety of Siemens’ technical competencies applied during the restoration of service run vane segments for the turbine section of a gas turbine. These repair competencies and technology/service options include: • Dimensional restoration techniques utilizing hot and cold straightening; • Utilization of refurbished blade rings for completed roll-in/roll-out exchanges; • Coupon repair techniques; • Braze restoration of cracks; • Laser etching; • Strain tolerant coatings; • Future technologies under development.
Skip Nav Destination
ASME 2006 Power Conference
May 2–4, 2006
Atlanta, Georgia, USA
Conference Sponsors:
- Power Division
ISBN:
0-7918-4205-3
PROCEEDINGS PAPER
Advancements in Gas Turbine Vane Repair
Julie McGraw,
Julie McGraw
Siemens Power Generation, Orlando, FL
Search for other works by this author on:
George Van Deventer,
George Van Deventer
Siemens Power Generation, Orlando, FL
Search for other works by this author on:
Reiner Anton,
Reiner Anton
Siemens Power Generation, Germany
Search for other works by this author on:
Andrew Burns
Andrew Burns
Siemens Power Generation, Orlando, FL
Search for other works by this author on:
Julie McGraw
Siemens Power Generation, Orlando, FL
George Van Deventer
Siemens Power Generation, Orlando, FL
Reiner Anton
Siemens Power Generation, Germany
Andrew Burns
Siemens Power Generation, Orlando, FL
Paper No:
POWER2006-88233, pp. 385-389; 5 pages
Published Online:
October 7, 2008
Citation
McGraw, J, Van Deventer, G, Anton, R, & Burns, A. "Advancements in Gas Turbine Vane Repair." Proceedings of the ASME 2006 Power Conference. ASME 2006 Power Conference. Atlanta, Georgia, USA. May 2–4, 2006. pp. 385-389. ASME. https://doi.org/10.1115/POWER2006-88233
Download citation file:
34
Views
Related Proceedings Papers
Related Articles
Metallurgical Considerations for Life Assessment and the Safe Refurbishment and Requalification of Gas Turbine Blades
J. Eng. Gas Turbines Power (July,2002)
Wide Gap Braze Repair Using Vertically Laminated Repair Scheme
J. Eng. Gas Turbines Power (January,2009)
A Novel Method for Refurbishing Used Hot Section Gas Turbine Blades
J. Eng. Gas Turbines Power (January,1995)
Related Chapters
Defect Assessment
Pipeline Integrity Assurance: A Practical Approach
Wide Gap Diffusion Brazing Repair
Brazing Handbook, Volume 2, 6th Edition
Chapter 4 | Panel Maintenance
Guidelines for the Selection and Training of Sensory Panel Members