This norm specifies the requisites and test methods of the ventilated protection clothing against contamination by radioactive particles under the particles form. This clothing is conceived to protect only the carrier body, being able to use other accessories like boots and gloves, to the full protection of the carrier body. These clothing are classified according to is nominal protection, determined according to the total escape to the interior. The classes are the following: - Atribute 1 = 5 (Nominal factor of protection); - Atribute 2 = 50 (Nominal factor of protection); - Atribute 3 = 500 (Nominal factor of protection)