Cap fastening for shielding containers for transferring radioactive materials

The cap fastening according to the invention is suitable for opening or sealing relatively large screening containers in a short time. The aim of the invention consists in providing a cap fastening for shielding containers that is suitable for remote actuation, requires little outlay on operation and a short operating path, but in addition can be made from mass-produced parts. The solution according to the invention consists in that the fastening system consists of a plurality of fastening elements, in that to release the fastening requires external compressive forces which act in a straight line on the fastening elements in the direction of the container axis and are present in the number of the fastening elements and at the magnitude of the force of the human hand, in that after these compressive forces have been removed fastening takes place automatically by virtue of the fastening elements, and in that it is possible for the purpose of retaining the release position to replace the compressive forces by additional technical means. Examples of the fastening elements are screwed bolts, interlock sleeves and the balls which produce the self-closure between them for the purpose of fastening.