CALCULATION OF EFFECTIVE NEUTRON MULTIPLICATION FACTOR FOR SOME MINOR ACTINIDES IN A BOILING WATER REACTOR

Abstract

In this study, using the Monte Carlo method fission reacting a boiling water reactor (BWR) was designed. The designed BWR system is divided into a square lattice of 8x8 type. Each square lattice is divided into 7x7 type small square lattice. Fuel cell in small square lattice was created from fuel rod, gap, clad zones. AmO2 and AmF3 minor actinides at 0.085-0.095% ratio in the fuel rod and Zr-2 in the clad region were used. In this study, the effect of the minor actinides used on the effective neutron multiplication factor (keff) was investigated. Three-dimensional analyses were performed by using the Monte Carlo code MCNPX-2.7.0 and ENDF/B-VII.0 evaluated nuclear data library.