Calculation of fuel burn up and radioactive inventory in a CANDU reactor using WIMS-D4 code

A study of fuel burn up and radioactive inventory for the CANDU reactor is carried out to validate the computer code WIMS-D4 for cluster geometry. The infinite and effective multiplication factors are calculated as a function of burn up and compared with the available results. A good agreement is observed among the present calculations and the previous published results. The code is then used to calculate the 235U and 238U consumed and the 239Pu produced in the fuel bundle. The inventories and the corresponding activities of some important fission products are also calculated.