SIS SS-ISO 9404-1-1992 防护致电离辐射外围设备．150毫米、200毫米及250毫米厚墙铅屏蔽构件．第1部分：厚度为150毫米和200毫米的人字形构件

标准号：SIS SS-ISO 9404-1-1992
中文标准名称：防护致电离辐射外围设备．150毫米、200毫米及250毫米厚墙铅屏蔽构件．第1部分：厚度为150毫米和200毫米的人字形构件
英文标准名称：Enclosures for protection against ionizing radiation — Lead shielding units for 150 mm,200 mm and 250 mm thick walls — Part 1: Chevron units of 150 mm and200 mm thickness
发布日期：1992/10/31 12:00:00
实施日期：1992/12/31 12:00:00
适用范围：This part of ISO 9404 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;— 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 ISO 9404. Since four- and five-chevron bricks are not manufactured, 200 mm and 250 mm thick walls are con-structed 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 ISO 7212.