This part of IEC 61331 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;− statement of compliance with this standard.