Conference Proceedings Paper
THORIUM BASED FUEL PERFORMANCE MODELING AND THE DEVELOPMENT OF MULTI-PELLET MATERIAL FUEL AND SHEATH MODELING TOOL (MPM-FAST)
13th International Conference on CANDU Fuel - 2016 Aug. 15-18
J.S. Bell (Royal Military College of Canada)
P. Chan (Royal Military College of Canada)
A means of achieving greater sustainability within the nuclear power production industry would be to develop thorium based fuel cycles. The Canadian Super-Critical Water cooled Reactor (SCWR) concept is using this path to achieve the sustainability requirement as part of the Gen-IV Forum. However the study of Th-based fuel irradiation behaviour is less advanced than that of UO2 fuel, with the majority of studies focused on (Th,U)O2, and very limited work examining the (Th,Pu)O2 fuel type proposed in the SCWR project. The Fuel and Sheath Modeling Tool (FAST), a fuel performance model for CANDU UO2 fuel was developed at the Royal Military College of Canada (RMCC). It was determined that its capabilities could be extended to includeThO2,(Th,U)O2 and (Th,Pu)O2 as fuel pellet materials and potentially be used as a tool to aid in the design and performance assessment of Th-based fuels, including the SCWR (Th,Pu)O2 fuel. The development of the (Th,U)O2 and (Th,Pu)O2 models that were added to FAST to produce the Multi-Pellet Material Fuel and Sheath Modeling Tool (MPM-FAST) was performed in co-operation with Canadian Nuclear Laboratories (CNL). Presented below is an outline of the (Th,U)O2 and (Th,Pu)O2 models as well as modeling results from MPM-FAST compared to the Post Irradiation Examination (PIE) data from two CANDU fuel like experimental irradiation fuels tests (DME-221 and BDL-422) conducted at Chalk River Laboratories (CRL).
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