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Special linear phased array probes used for ultrasonic examination of complex turbine components

Jérôme Poguet - Imasonic - France
Petru Ciorau - Ontario Power Generation Inc. - Canada
Gérard Fleury - Imasonic - France

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Abstract

1. Introduction

2. Probes considered

3. Probe design

Electroacoustical design

4. New challenges

5. Imasonic QA system

6. OPG checking procedure

7. Detection & sizing capabilities

8. Probes in the field

9. Conclusions

10. Acknowledgements

11. Literature

  1. P. Ciorau, D. MacGillivray, T. Hazelton, L. Gilham, B. Taffs - ONTARIO POWER GENERATION Inc. ,Pickering - Canada / J. Poguet - IMASONIC S.A. - France "In-situ examination of turbine components (blade roots, rotor steeple grooves and disk-blades attachments) of low-pressure steam turbine, using phased array technology" - 2nd International conference on NDE in relation to Structural Integrity for Nuclear and pressurized components - EPRI - New Orleans, USA - May 2000
  2. P. Ciorau, D. MacGillivray, T. Hazelton, L. Gilham, D. Craig - ONTARIO POWER GENERATION Inc. ,Pickering - Canada / J. Poguet - IMASONIC S.A. - France "In-situ examination of ABB L-0 blade roots and rotor steeple of low-pressure steam turbine, using phased array technology" - 6th EPRI Steam Turbine/Generator Workshop and Vendor exposition - St Louis, Missouri, USA - August 1999
  3. P.Ciorau, D. MacGillivray, A. Lamarre, and F. Jacques: "Feasibility study of ultrasonic inspection using phased array of turbine blade root and rotor steeple grooves-part 2" - EPRI Phased Array Seminar-Portland, Sept. 1998.
  4. P. Ciorau, D. Macgillivray, T. Hazelton, L. Gilham, D. Craig, J. Poguet: " In-situ examination of ABB L-0 / L-1 blade roots and rotor steeple of low-pressure steam turbine, using phased array technology. 15-th WCNDT-paper IDN 013 - Rome, Oct. 2000.
  5. Gérard Fleury - IMASONIC S.A. - France / Christian Gondard - CEA CEREM, Saclay - France - "Improvements of Ultrasonic Inspections through the use of Piezo Composite Transducers" - 6th European Conference on non destructive testing - NICE - 1994

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