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Magnetic Particle Inspection of Turbine Blades in Power Generating Plants PUBLIC ACCESS

[+] Author Affiliations
Clement Imbert

The University of the West Indies, St. Augustine, Trinidad

Krishna Rampersad

Trinidad & Tobago Electricity Commission, Port-of-Spain, Trinidad

Paper No. 92-GT-350, pp. V004T10A017; 5 pages
doi:10.1115/92-GT-350
From:
  • ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Cologne, Germany, June 1–4, 1992
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7896-5
  • Copyright © 1992 by ASME

abstract

Modern societies expect and depend on regular, relatively uninterrupted, supply of electric power. Preventive maintenance is therefore vital for power generating plants. Non-Destructive Evaluation (NDE) is a significant element of the maintenance programme of power plants. Power plants use a wide variety of steam and gas turbines. Turbine failure can occur without warning and with disastrous results. Such failures are invariably caused by cracks. Such defects are readily detected by NDE techniques such as Magnetic Particle Inspection (MPI) if they are on or near the surface and accessible.

This paper reports on the use of MPI in the examination of martensitic stainless steel turbine blades in power plants in Trinidad and Tobago so as to quantify the testing parameters and determine field strength in relation to defect detectability. Specific recommendations are made regarding the configuration and optimum placement of magnetizing coils for turbine blade inspection insitu and detached.

Copyright © 1992 by ASME
This article is only available in the PDF format.

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