The realization of thorium uranium self-sustaining cycle and meet its physics and thermal-hydraulic requirements

it is an important question in the thorium uranium fuel recycling.(Th-U)O2CANFLEX43 fuel bundle includes two types of fuel elements

the ThO2elements in the inner two rings and the slightly enriched uranium(SEU) elements in the outer two rings as driving fuel rods.The three driving schemes are introduced in this paper based on different enrichment of drive fuel rods.The neutronic physics calculation by Dragon Program and the thermal-hydraulic analysis are executed.The results are as follows: at 1.4% enrichment of233U

the fuel consumption is 16 MWd/kg

the 233U production is 5.9872 g

the highest surface temperature of the fuel rod cladding is 371oC

temperature in the fuel rod center is 1830oC

and the maximum flow in the single channel is 25.4 kg/s.These parameters meet the requirements of thorium uranium self-sustaining cycle.