Radio-protective shield

A radio-protective shield configured to be fastened on the periphery of an opening formed in a wall separating a hot space subjected to ionizing radiations and a cold space not subjected to ionizing radiations, the radio-protective shield comprising:

• a wall made of a transparent material, said wall made of a transparent material comprising a first face configured to be directed on said cold space side, and a second face configured to be directed on said hot space side, a peripheral edge of one of said first face or second face of said wall made of a transparent material bearing against a bearing face of a counter-frame through a seal;
• a fastening frame provided with a bearing system configured to bear against a peripheral edge of the other one of said first face or second face of said wall made of a transparent material, the bearing system comprising a longitudinal bearing structure comprising a contact surface with the peripheral edge of the first face or of the second face opposite said wall made of a transparent material, said bearing system comprising an elastic return system configured to apply a pressure against said longitudinal bearing structure in the direction of said wall made of a transparent material;
• and
• a securing system configured to secure together said counter-frame and said fastening frame.