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Combustion Turbine F-Class Life Management of 1st Stage Turbine Blades

[+] Author Affiliations
Eric S. Wan

Turbine Technology International, Inc., Rochester, NY

Paul Crimi

Progress Energy, St. Petersburg, FL

John Scheibel, R. Viswanathan

Electric Power Research Institute, Palo Alto, CA

Paper No. GT2002-30301, pp. 683-690; 8 pages
doi:10.1115/GT2002-30301
From:
  • ASME Turbo Expo 2002: Power for Land, Sea, and Air
  • Volume 4: Turbo Expo 2002, Parts A and B
  • Amsterdam, The Netherlands, June 3–6, 2002
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-3609-6 | eISBN: 0-7918-3601-0
  • Copyright © 2002 by ASME

abstract

Whenever the operations and maintenance economics so dominate the operation of a particular power producer, engineering insight is the plant’s vanguard in maintaining and managing costs. To provide a basis for operators to confront the spiraling parts replacement costs that are so closely tied to the durability of the hot section, EPRI has developed the Gas Turbine Life Management Platform (LMP), an effort which has been directly supported by F-Class turbine operators. Tested and verified on the advanced 7FA and 9FA class of turbine designs, the LMP provides unprecedented detail on temperatures and stresses throughout a selected hot section component. In turn, the platform relies on explicit details of stress and temperature to track the damage due to creep, coating oxidation and TMF (thermal mechanical fatigue). Supplied with operating data, it graphically represents the recent practices of either base load or peaking service. The platform supplies the engineering data needed by operators to make informed decisions regarding the disposition (continued use, repair, or scrap) of these most advanced and expensive parts. In this paper, the procedures of predicting temperature/life and how well these predictions correlated with field observations will be discussed in detail.

Copyright © 2002 by ASME

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