An Approach Regarding Aging Management Program for Concrete Containment Structure at the Gentilly-2 Nuclear Power Plant
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:
Jean-Olivier Chenier (Hydro-Quebec, Gentilly-2 NPP)
Dragan Komljenovic (Hydro-Quebec, Gentilly-2 NPP)
Vladimir Gocevski (Hydro-Quebec, Structural Department)
Sylvain Picard (Hydro-Quebec, Gentilly-2 NPP)
Guy Chrétien (Hydro-Quebec, Gentilly-2 NPP)
  

Abstract

The current paper presents the approach used by the Gentilly-2 Nuclear Power Plant, Hydro-Quebec, in elaborating a specific Aging Management Program (AMP) for its concrete containment structure. It is developed as a part of preparation activities for the plant refurbishment project. The specificity of the AMP consists in addressing Alkali-Aggregate Reaction (AAR) degradation mechanism which is not well known in the nuclear power industry. HQ developed a numerical model based on finite elements for assessing the concrete containment structure behaviour under the impact of AAR and other relevant degradation mechanisms. Such predictions enable a better targeting of corrective and mitigating actions during the second cycle of the G-2 operation while required.

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