Radiation resistance leaky absorbing elements with boron carbide in water-cooled nuclear reactors

We consider the positive and negative qualities of the main absorbent material boron carbide. For reduce the swelling of the neutron absorbed materials and the stress drop small holes was made in the shell. An experiment was conducted for irradiation of leaking layouts absorbing elements in the SM reactor. Nneutron fluence up to a maximum 3,1·10 21см -2 (E> 0,1 MeV) and 1,0·10 20 см -2 (E