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Boliden Aktiebolag

Bengt A Akesson

K Ivar Sagefors

Sten G Bergman

Kurt Katzeff

Arrangement for communications between equipment belonging to different

Storage complex for storing radioactive material in rock formation

The present invention relates to a storage plant for storing radioactive material in rock formations, the plant comprising a cavity (4) for accommodating radioactive material, the cavity (4) having therearound a rock shield (6) in which a further cavity (7) is optionally formed, there being arranged in the optional cavity a barrier (8) comprising a resilient material which swells in water. Arranged around the second cavity (7) and spaced therefrom is a helical tunnel (12). Entry tunnels (13) extend from the helical tunnel (12), in towards the remaining parts (4,7) of the plant. The invention is characterized in that at least one cage of substantially vertical drill holes (14) is arranged around the plant, preferably in connection with the helical tunnel (12), for taking-up and conducting away water arriving at and departing from the inner part of the storage plant.

Storage complex for storing radioactive material in rock formations

An underground repository for the storage of radioactive material. The repository consists of an inner cavity surrounded by a shell of rock. The shell of rock is surrounded by a shell of clay, and the body formed by the shells of rock and clay is enclosed in an outer underground cavity. A hollow cylindrical member is placed in an upright position inside the inner cavity. The space inside and outside the cylindrical member is filled with spherical bodies of concrete which are provided with through-going openings. Radioactive material formed into rods is accommodated in the openings in those spherical bodies which are placed in the lower part of the interior of the cylindrical member. The heat developed by the decay of the radioactive material causes air or other fluid inside the inner cavity to circulate upwards through the cylindrical member and downwards through the space between the outside of the cylindrical member and the wall of the inner cavity and through the openings in the spherical bodies and the interstices therebetween.

System for the storage of radioactive material

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Frolunda, Sweden

Bengt A Akesson