0

Full Content is available to subscribers

Subscribe/Learn More  >

Alstom Post-Development of GT24 and GT26 Hot Gas Turbine Parts Reconditioning

[+] Author Affiliations
N. Schröder, G. Drensky, S. Florjancic

Alstom Switzerland Ltd., Baden, Switzerland

Paper No. GT2009-59233, pp. 563-569; 7 pages
doi:10.1115/GT2009-59233
From:
  • ASME Turbo Expo 2009: Power for Land, Sea, and Air
  • Volume 4: Cycle Innovations; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine
  • Orlando, Florida, USA, June 8–12, 2009
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4885-2 | eISBN: 978-0-7918-3849-5
  • Copyright © 2009 by Alstom

abstract

Reconditioning of hot gas turbine parts is driven mainly by lifetime and performance requirements. Commonly, the first approach in reconditioning is to achieve an exact reproduction of a new manufactured part, by following new part specifications. However, this may prove to be too costly and unnecessary. The unique OEM experience, allows ALSTOM to widen these specifications in order to optimize repair costs, improve throughput time and possibly reduce parts scrap rate without sacrificing lifetime and performance. This post-development is based on MI calculations re-calibrated and reinsured by extensive empirical field feedback and performance statistics over the whole GT fleet with millions of operating hours. This paper presents an overview of the required area of the OEM’s expertise and field data within post development, substantiated by examples from daily operations. The work is performed in order to ensure safe remaining part lifetime along with full functionality and known performance impact. Parameters influencing the remaining part lifetime are micro-structural degradation, crack allowances, coating properties and minimum wall thicknesses, while, parameters influencing performance are airflow specifications, radial clearances, sealing design and surface roughness. Furthermore, different manufacturing techniques and new technologies get investigated and then implemented whenever there is an opportunity to optimize process cost effectiveness and reach higher quality standards. This is done in order to ensure that the company retains its competitive edge over other reconditioning companies. As the complexity of components varies, the unique knowledge of each component allows ALSTOM to develop the most favorable reconditioning processes. This enables state-of-the-art reconditioning and repair methods to be utilized. Thus ensuring optimum throughput time, while minimizing scrap rates and maintaining performance and lifetime requirements. This unique experience and knowledge from the reconditioning processes is transferred as a benefit to the customer and also utilized in future designs, resulting in improved new part designs and optimized life cycle costs.

Copyright © 2009 by Alstom
Topics: Gas turbines

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In