NUCLEAR REACTOR CORE, FUEL ASSEMBLY AND LOADING OF FUEL WITHIN NUCLEAR REACTOR

摘要

PURPOSE:To provide a nuclear reactor core which accomplishes the control of a degree of reaction and an output distribution accurately by arranging square grids inside a reactor core while rectangular grids outside the reactor core. CONSTITUTION:A nuclear reactor core is made up of a plurality of core grids sectioned conceptionally by spaces for inserting control rods. The core grids are made up of a plurality of square grids 10 and rectangular grids 11 the same in number as those 10 preferably. The above square grids 10 and the rectangular grids 11 are formed with one side of the rectangular grid 11 in the length L when the length of the square grid is L while the other side of the rectangular grid 11 is formed in the length L+alpha, larger than the length L of the square grid 10. The square grid 10 is arranged inside the core while the rectangular grid 11 outside the core.