Abstract

This Uganda Standard specifies the properties of the various lead units used in the construction of shielded enclosures for protection against ionizing radiation. The units dealt with are: basic units: bricks, posts and functional units: aperture bricks, windows, sphere units, plugs and reducing units. Only bricks for walls of 150 mm thickness are standardized in this part of US ISO 9404. Since four- and five-chevron bricks are not manufactured, 200 mm and 250 mm thick walls are constructed with bricks of 50 mm, 100 mm and 150 mm thickness. The 150 mm and 200 mm shielding units are dealt with separately in two sections for clarity. The 50 mm and 100 mm shielding units are standardized in US ISO 7212. This standard was PUBLISHED on 2014-07-31