Provision of Research Support on the Review of the Established Good Practices in Development of Clad Ballooning and Embrittlement Models for Higher Burnup PWR Fuel

Collect and analyse information for the experiments conducted to simulate ballooning behaviour and to investigate flow area blockage in the following three conditions:  LBLOCA refill phase;  LBLOCA reflood phase;  SBLOCA boildown phase. This analysis should also consider the PAKS event and should make judgements on the influence of bundle size and radial constraint when drawing conclusions for the reactor. Identify the modelling methods and computer codes that are currently used to predict flow area blocka...