Protective covering e.g. steel grating, for e.g. protecting diesel generators in nuclear power plant against penetration of tornado missile, has profiled elements, where distance between elements is selected so that passage is not formed

摘要

The covering (2) has multiple elongate profiled elements (32) arranged in an attachment plane in a rectangular frame (10) with a longitudinal direction (20) and with a transverse direction (22). The profiled elements are aligned parallel to each other in the longitudinal direction. Each profiled element includes an L-shape or V-shape cross-section with two legs, which collide in a tip. The tip points in the transverse direction. A distance between the successive profiled elements is selected such that a rectilinear passage is not formed between the successive profiled elements.