Reactivity control of nuclear fuel pellets by volumetric redistribution of fissile, fertile and burnable poison material

摘要

A fuel pellet for a nuclear core fuel rod for use in a nuclear reactor fuel assembly having a predetermined radial distribution of burnable poison, fertile, and fissile nuclear material to provide the desired control of reactivity of the fuel pellet with the minimum amount of burnable poison material and to provide control of the nuclear reactivity of the fuel assembly.