Kernforschungszentrum Karlsruhe Gmbh

Gunter Waldenmeier

Wilhelm Hempelmann

Rainer Koster

Fritz Meyer

Gunter Hohlein

Ulrich Pfeifer

Stackable long-term storage container especially for radioactive waste comprises especially convoluted lid and bottom pieces to facilitate stacking. The lid is convoluted providing an annular projection which serves to allow grabbing of the lid and, together therewith, the drum. The floor has a rim which extends axially away from the floor and then is bent over upward toward the drum with drainage openings provided at the bottom edge. A resilient jacket is disposed around the bottom edge and surrounds the rim to prevent direct contact between the drums and scratching during stacking. A fiberglass reinforced plastic insert inside the drum protects the inner wall from damage. The special shape of the drum prevents causes for corrosion under all operating conditions of the drum, especially during very rough handling of the drum during filling, transport and storage.

Stackable long-term storage container, preferably for radioactive waste

A seal structure for a double-lid system with an upper lid (chamber lid) for closing the opening of a first container (chamber) and a lower lid (drum lid) for closing the opening of a second container (drum), whereby the chamber lid is provided with a surrounding seal (chamber lid seal) and the corresponding opening of the drum is also provided with a circumferential seal (drum seal), the sealing mechanism being operable in such a way that the chamber lid seal and the drum seal fully retain their sealing capability with respect to both the chamber flange and the rim of the drum lid during all operations. To this end it is suggested that at least one of the two seals, preferably the drum seal, be provided with a closed annular cavity providing an air cushion at its radially inner end.

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Karlsruhe, Germany

Gunter Waldenmeier