Abstract: A sealable container for receiving toxic waste for long-term storage is described, the container comprising sheet metal members welded together to form a main fillable volume; four hollow, sheet metal, vertically directed leg portions situated at corner positions on the container, and, a separate lid member fixable to the container to seal at least the main fillable volume wherein the majority of the weld length utilized in the container construction is constituted by fillet welds. Further constructions are described having means to prevent flotation of waste in a liquid grout prior to solidification thereof and constructions where the leg volumes are independently fillable of the main volume.

Abstract: A fabricated metal stillage for storing and/or transporting a plurality of drums containing hazardous material, such as radioactive waste, comprising a rectangular planar base having a post extending upwardly from each corner. Each post is hollow and is provided with a support pad at an end remote from the base. The support pads lie in a plane substantially parallel to the base. Upper and lower tie plates extend between the four posts to define a perimeter around the stillage. Internal partition plates are provided to form a plurality of compartments for receiving the drums, the inner ends of the partition plates being attached to a central ring. The stillages can be arranged in a free-standing stack with the base of an upper stillage resting on the support pads of a stillage beneath it. Such a stack is able to withstand loads resulting from seismic events.