METHOD OF RESTORING SAFETY BARRIERS AT A RADIOACTIVE WASTES DISPOSAL STATION Russian patent published in 2019 - IPC G21F9/00 

FIELD: technological processes.

SUBSTANCE: invention relates to technology of improving or hardening soil using thermal, electrical or electrochemical means. Method of restoring safety barriers in a radioactive wastes disposal station includes immersing the electrodes in the area of formation of cracks and cavities in the barrier material, creation of electric field between electrodes, supply of carrier fluid to the area adjacent to electrode, transfer of carrier fluid from one electrode to another. Electrodes are immersed at the boundaries of the area of formation of a crack or cavity in a barrier material, which ensures safe burial of solid radioactive wastes. Barrier material mixed with the carrier fluid is fed into the first perforated electrode and injected into the anode area. Difference of potentials between electrodes is created, barrier material is pushed to area of formation of crack or cavity. Carrier fluid passed between electrodes and cleaned from barrier material is pumped through second perforated electrode. Dry barrier material is fed through perforation area.

EFFECT: invention makes it possible to remotely restore integrity of safety barriers at radioactive wastes disposal sites and to increase safety.

1 cl, 2 dwg