IEC 61331-2:20 14适用于X射线诊断和X射线治疗中用于辐射防护的半透明防护板。它也适用于半透明保护板，用于核医学和带有自动控制后装设备的近距离放射治疗中的伽马辐射防护。它不包括其他半透明辐射防护材料，例如用于保护操作员眼睛的含铅眼镜或护目镜（眼镜）；含铅面罩，覆盖操作者的整个面部；患者眼睛保护；和甲状腺/颈部保护装置。第2部分涉及以下方面的要求: -几何精度； -材料的光学质量； -光谱透射率； -辐射衰减特性； -标记；和 -符合本标准的声明。第二版取消并取代了1994年出版的IEC 61331-2的第一版。它构成技术修订。该第二版已经被适配以应用于本技术。基本变化和扩展是: -扩大范围，涵盖各种半透明防护板和各种辐射质量和伽马辐射； -取消对用于视觉成像的半透明保护板的定义和要求； -关于几何精度和光学质量的要求的变化； -关于铅当量和最小厚度测定要求的变化；和 -有关资料和标记的要求的改变。

IEC 61331-2:2014 applies to translucent protective plates used for radiation protection in X-ray diagnosis and in X-ray therapy. It also applies to translucent protective plates used for protection against gamma radiation in nuclear medicine and brachytherapy with automatically-controlled afterloading equipment. It does not cover other translucent radiation protection materials, e.g. leaded glasses or goggles for protection of the operator's eyes (eye spectacles); leaded face shields, which cover the entire face of the operator; patient eye protection; and thyroid/neck protective devices. This Part 2 deals with the requirements on:
- geometrical accuracy;
- optical quality of the material;
- spectral transmittance;
- radiation attenuation properties;
- marking; and
- statement of compliance with this standard. This second edition cancels and replaces the first edition of IEC 61331-2, published in 1994. It constitutes a technical revision. This second edition has been adapted to apply to the present technology. The essential changes and extensions are:
- extension of scope to cover all kinds of translucent protective plates and all kinds of radiation qualities and gamma radiation;
- removal of definition and requirements for translucent protective plates for visual imaging;
- changes of requirements concerning geometrical accuracy and optical quality;
- changes of requirements concerning determination of lead equivalent and minimal thickness; and
- changes of requirements concerning information and marking.