Abstract: The invention is a method for the storage in a storage room (9) of radioactive material and particularly for the temporary storage of radioactive nuclear fuel from nuclear reactors and of non-reprocessed radioactive material.A remote-controlled robot arrangement, comprising a transfer robot (4) and a lifting and carrying robot (5), is designed to fit into a lift (8) for moving the material from ground level to the storage room, to transfer the material into double-walled containers (1), and to carry stacks of containers. The material is transferred by the transfer robot (4) to and from the double-walled containers (1). The containers are provided with safety arrangement (2) with three safety locks to prevent the radioactive material from escaping during transfer.Heat removal from the double-walled containers (1) is effected by means which make the heat available for practical use and maintain the correct temperature in the containers.

Abstract: The invention provides for a procedure for permanently storing radioactive material in a rock chamber, comprising an enclosed construction (4) completely separated from the walls, floor and ceiling of the rock, made of permanent material impervious to water, in which materials in encapsulated (9) form are stored, and the outer spacing between the walls, ceiling and floor of the rock and the construction is completely filled with material not impervious to water (5). In the invention, the encapsulated material is placed inside the construction by means of a robot (10) on both sides of a track provided for the robot. When the construction is totally or partially filled with material, the construction or part of it containing material is sealed with bentonite or similar, leaving a passage (13) for the robot in the construction, which passage is filled with water-displacing material that is easy to dig.