[en] The benchmark calculations have been performed for WIMS-D5 against POWDERPUFS-V(PPV) and WIMS-AECL using CANDU6(CANadian Deuterium Uranium) reactors. For the CANDU reactors, the lattice parameters were generated for the natural uranium based on the ENDF/B-VI library of WIMS-D5 and WIMS-AECL codes. When comparing the infinite multiplication constant, the results show that at the beginning the prediction errors of WIMS-D5 and WIMS-AECL against POWDERPUFS-V are 0.4% and 2.1% and at the 4000MWD/T, 2.0%, 2.1% respectively for CANDU reactors. The results show that the values obtained from WIMS-D5 calculation are in the agreement with from those of PPV at the beginning whereas WIMS-AECL are in agreement with the WIMS-AECL results as burnup increase in the comparison of fuel/coolant/moderator temperature coefficients in the cooled lattice