Patent Number: 
Section: description

As seen in the drawing the lifting lug for a nuclear-waste container 10 according to the invention has a tubular body 1 centered on an axis A and having at an inner end a radially outwardly projecting mounting flange 2 for bolting to the container 10. In addition the body 1 has at a smaller-diameter outer end a transverse wall 3. This transverse wall 3 in accordance with the invention is formed by a separate wall or support piece 5 press-fitted into the cylindrically tubular body 1 and, like the body 1, rotation symmetrical to the axis A. The support piece 5 is pushed axially from the inner end having the flange 2 so as to fit against shoulders or steps 6 and 7 at an outer end of the body 1 in a tight force-fit and has bores 4 for venting the space defined by the step 6 when the piece 5 is pressed into place. The piece 5 is mounted at the load-bearing region of the lifting lug 1 and has a thickness determined by the permissible surface pressure. As shown in the drawing, the piece 5 is formed mainly as a disk 8 and a ring 9 spaced from it. The disk 8 and the ring 9 thus form the one-piece support piece 5. The container 10 normally has two such lugs projecting diametrally oppositely from each other and is lifted and moved by a rig having a pair of hooks that engage the two lugs. During such lifting each tubular body 1 is braced internally by the respective support piece 5 so that, even though it is being subjected to enormous radial compression, it does not deform and ovalize. On the other hand if there is an accident and the container 10, for instance, is dropped or knocked over and subjected to a load directed along the axis A toward the container, the tubular body 1 will crush and deform rather than be driven through and compromise the structural integrity of the container. The press-fitted piece 5 will not resist such axial deformation significantly, making the lug according to the invention as resistant to radial deformation during normal use as the prior-art lug, but less resistant to axial deformation in the event of an accident.