Abstract
This study presents two proposed models for an ABR-1000 SFR metallic fuel core utilizing different combinations of Thorium, Uranium, and Plutonium fuels. The axial and radial models were evaluated using the OpenMC, open-source Monte Carlo simulation tool. The results of the depletion analysis revealed that ThUPu and UPu models demonstrated a higher cycle length than the ThU model, with the ThUPu(A) model being the most favorable option regarding safety and environmental sustainability. Furthermore, only ThUPu and UPu exhibit fissile inventory increment as time progresses. The simulation of the axial and radial models also demonstrated a higher neutron flux for all axial models and negative reactivity coefficients for all models. UPu(A) exhibits the highest beta effective value, followed by ThUPu(A) then by ThU(A). It is concluded that the axial model is the most favorable option, with the ThUPu(A) model being the optimal choice among the six proposed models.
Published Version
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