Thermalhydraulics and safety aspects of the use of monolithic U-9Mo LEU fuel in the low-power reactors

The thermalhydraulic performance of the U-9Mo LEU fuel in Low-power Reactors was investigated through the simulation of the design basis accident for this reactor. The fuel proved to be usable in both normal daily and accidental operations. The feedback coefficients were calculated by the BMAC system. Both HEU and LEU fuels behave similarly in the normal operation, while higher temperatures are obtained for the accidental operation in the case of the LEU fuel.