Analysis and Assessment of BEO-Doped Fuel with Fuel Rod Performance Code Jasmine

UO2-BeO fuel, a quite potential accident tolerant fuel, is used to increase the temperature margin of UO2 fuel and improve the safety performance of reactor operation. With the advantage of higher thermal conductivity than that of the UO2 pellet, the heat transfer performance of the UO2-BeO pellet is significantly improved, and the pellet temperature is much lower. The development of the JASMINE code based on the models of UO2-BeO pellets had been completed to analyze and evaluate the irradiation performance of UO2-BeO pellets. In this paper, the performance analysis of UO2 and UO2-10 vol% BeO fuel is performed respectively. Based on the experiment data from the Halden reactor, the results show that the predictions calculated by updated JASMINE are in good agreement with the measurements, demonstrating an excellent ability to analyze the in-pile behavior of UO2-BeO fuel.