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Stress Intensity Factors for Under-Clad and Through-Clad Defects in a PWR RPV Submitted to a Pressurised Thermal Shock

[+] Author Affiliations
S. Chapuliot, Y. Ménager, S. Marie

CEA-Saclay, Gif-sur-Yvette Cedex, France

Paper No. PVP2005-71252, pp. 13-22; 10 pages
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 7: Operations, Applications, and Components
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4192-8 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME


CEA has launched important work on the development of a Stress Intensity Factors compendium for cracks in RPV walls taking into account the cladding. The work is performed by a F.E. analysis with a parametric mesh for two types of defects (under-clad defect and through-clad defect) in a wide range of geometrical and material parameters. In addition, an analytical stress solution for PTS on the RPV is proposed to allow a complete analytical estimation of the stress intensity factor KI for the PTS problem. The results are validated by their application on a complex and realistic case study, and the comparison with the complete 3D finite element calculation.

Copyright © 2005 by ASME



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