Steel containment for nuclear reactor plants

Nuclear reactor plants have a containment (1) which mostly consists of steel, rests on a concrete foundation (3), contains concrete internals (11, 17), and through which lines (15) penetrate. If the containment (1) is partially of a free standing design, it can be connected to the concrete foundation (3) by means of anchoring bars (20) orientated at right angles to its surface, in order to obtain anchoring of the concrete internals (11, 17) in the event of earthquake stresses. The anchoring bars (20) can be distanced with respect to the concrete over a part of their length by a resilient packing (25). According to the invention, the anchoring bars (20) are each arranged to one side of the containment (1) and fastened thereto with their one end (22, 32) without penetration.