IAEA CRP on the Prediction of Axial and Radial Creep in HWR Pressure Tubes
33rd Annual CNS Conference - 2012 June 10-13


Presented at:
33rd Annual CNS Conference
2012 June 10-13
Location:
Saskatoon, Canada
Session Title:
Life Extension

Authors:
Jong Ho Choi (International Atomic Energy Agency)
  

Abstract

Pressure tube deformation is a critical aging issue in operating Heavy Water Reactors (HWRs). According to the service year, horizontal pressure tubes have three kinds of deformation: diametral creep, longitudinal creep, and sagging. The Coordinated Research Project (CRP) scope includes the establishment of a database for pressure tube deformation, microstructure characterization of pressure tube materials collected from HWRs currently operating in Member States and development of a prediction model for pressure tube deformation.

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