Study the neutronic analysis and burnup for BWR fueled with hydride fuel using MCNPX code

摘要

This work presents the neutronic characteristics of advanced boiling water reactor (BWR) which fueled with hydride fuel. MCNPX Computer code based on Mont Carlo Method, is used to design a three dimensional model for BWR fuel assembly in a typical operating temperature and pressure conditions. A test case was compared with a benchmark problem and good agreement was found. This model is used to determine attainable discharge burnup, pin-by-pin power distribution, axial power distribution and reactivity effect of voiding. It is found that hydride fuel bundle design can be simplified by reducing the volume of water in-between the fuel bundles. The increase in the number of fuel rods per given core volume enables an increase in the BWR power density relative to oxide fueled core design.