标准摘要
[中文适用范围]： 指定屏蔽外壳构造中使用的各种主导单元的属性：基本单元（砖、柱）和功能单元（孔砖、窗口、球体单元、塞子和异径单元）。 只有一块和两块 V 形砖是标准化的。 单位分为三类：标准化单位；很少使用或用于非常特殊目的的单位，或者在一个国家使用非常频繁并且人们认为这种使用将变得更加广泛的单位；过渡期内可接受的单位。 [外文原描述]： Specifies the properties of the various lead units used in the construction of shielded enclosures: basic units (bricks, posts) and functional units (aperture bricks, windows, sphere units, plugs and reducing units). Only one and two chevron bricks are standardized. The units are classified into 3 categories: standardized units; units which are either used very infrequently or for very specialized purposes, or are used very frequently in one country and it is felt that this use will become more widespread; units which are acceptable for a transition period.
英文名称Enclosures for protection against ionizing radiation — Lead shielding units for 50 mm and 100 mm thick walls