TRI-COMPONENT AND PREFABRICATED CYLINDRICAL TRUNK FOR SHIELDING A SUBTERRANEAN RADIOACTIVE WASTE STORAGE ALVEOLE

摘要

The manufacture of the liner is simplified, in particular concerning the filling of the annular space between the two tubes. It therefore consists of an outer tube (1), an inner tube (2) and filling material (3) placed in the initial annular space. The casing consists of a plurality of prefabricated sections installed one after the other, against each other. The outer tube (1) has openings (7) so that the filling material (3) can penetrate it. The interlocking of the sections can be done by means of stepped radial surfaces. Fins may complement the outer surface of the inner tube (2) to facilitate adhesion of the filler material (3) to the inner tube (2). Application to the underground storage of radioactive waste.