Fast Photothermal Inspection of Plasma-Sprayed Coatings of Primary Circulation Seal Rings of a Nuclear Reactor. Part Two: After the Trial Run

  • R. Lehtiniemi
  • J. Hartikainen
  • J. Rantala
  • J. Varis
  • M. Luukkala

Abstract

In the 1991 QNDE conference [1] we described a photothermal inspection of the plasma-sprayed coatings of two seal rings used in the main pump of the primary circulation in the PWR-type nuclear reactor. The measurements concentrated on detecting the most critical flaw type, adhesion defects at the interface between the coating and the substrate. The samples were tested immediately after they were coated and lapped, and already then two thermal anomalies could be found.

Keywords

Chromium 

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References

  1. 1.
    R. Lehtiniemi, J. Hartikainen, J. Rantala, J. Varis, and M. Luukkala, in Review of Progress in Quantitative NDE, Vol. 11 A, edited by D. O.Thompson and D. E. Chimenti (Plenum Press, New York, 1991 ), p. 441.Google Scholar

Copyright information

© Plenum Press, New York 1993

Authors and Affiliations

  • R. Lehtiniemi
    • 1
  • J. Hartikainen
    • 1
  • J. Rantala
    • 1
  • J. Varis
    • 1
  • M. Luukkala
    • 1
  1. 1.Department of PhysicsUniversity of HelsinkiHelsinkiFinland

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