Rod arrangement to fuel bunches for operating nuclear reactors

摘要

Described is rod arrangement in the fuel bunches of nuclear reactors which permitting to reduce initial radioactivity, power irregularity between fuel rods, neutrons leak from bunches and increase energy utilisation of the fuel rods. In the bearing area (1b) of bunch (10) are located three rods (3) with absorber whereby these rods (3) with absorber are in the surrounding in central section (1c) of bearing area (1b) of the bunch (10) and a plane are given longitudinal axis (1d) of bearing area (1b) of the bunch (10) and individual rods axis (3) with absorber make the angle alpha=120°.