Development of a Fuel Performance Model of (Th,Pu)O2

Abstract

A fuel performance model is being produced for (Th,Pu)O₂ ceramic fuel for the ongoing development of a design analysis tool for the Canadian SCWR. Work on the development of the model's grain growth and single grain fission gas diffusion capabilities will be presented, with the modelling results for grain size and fission gas release compared to Post Irradiation Examination (PIE) data from an irradiation experiment conducted at Chalk River Laboratories. Further development of the single grain fission gas diffusion behaviour is required.