Arrangement for screening a fluid wall lead-through against high energy electromagnetic radiation, nuclear or corpuscular radiation

摘要

Disk-shaped screening components (2, 3) are arranged in the penetration (1) for fluid flow. They intercept radiation, without interfering with the passage of fluid. Each component is made of a material appropriate to absorption of the specific type(s) of radiation concerned. Their number and shape are selected for a desired screening characteristic, appropriate to the radiation concerned. Preferred features: At least part of the component is iron, boron steel or lead to absorb gamma radiation. Polyethylene, preferably boriated polyethylene, is included to retard highly-energetic neutrons. The segmented-disk screening components are assembled in a screw-like configuration, each perpendicular to the axis (4). They are arranged along the axis, each set at a given angle with respect to its neighbor. They are multi-bladed and their edges are angled, to align with the direction of the notional screw thread formed.