Research on power effect of Th-U fuel on TACR (thorium based advanced CANDU reactor)

Researching on the CANDU lattice physics, average power of the core is carried out. Though the value of power may have effect on the nuclear reaction in the TACR core that used thorium fuel, the lattice cross sections are also different in various power conditions. This paper has studied the evolution of the lattice cross section data of the all uranium fuel lattice and the Th-U lattice with the radiation value. The 233Pa and 233U weight content in the thorium fuel in different power conditions is also examined. The results show that the power has effect on the macro section of the thorium fuel. When doing the core calculation with thorium fuel, the history-based local-parameters methodology is adopted. (authors)