Lattice burnup calculation for a PWR assembly

Abstract EN

A computer model was designed to simulate a pressurized water reactor assembly.

Three types of assemblies were considered in the study, the first without burnable poison rods, the second has 12 burnable rods and the last has 20 burnable rods.

The multiplication factor calculated by the model was compared with previous studies and found to be in good agreement.

The model was used to estimate pin by pin power distribution in the assembly as well as axial power distribution.

The position of the maximum power pin was identified in each case.

The effect of burnup on radial and axial power distribution was discussed.