Research on behavior of protection materials for contamination-decontamination used in cryogenic conditions

In this work, preliminary data are presented concerning: 1. the behaviour of polymer materials (polyurethanes, polyesters, polyethylenes and polyvinyls) in the contamination with radioactive substances, particularly with tritium, in cryogenic conditions of utilization of radioprotection equipment; 2. the behaviour of contaminated polymer materials in the operations of surface contamination elimination, after utilization. In our studies and experiments we have followed: - the compactness degree of the structure or porosity of this polymeric materials; - the mutual interference of the behaviour of the material exposed to contamination and the contaminating substance, in correlation with the two modules of the process, contamination and decontamination, respectively. The polymer materials were analyzed and characterized from these two points of view. An extension of the polymer materials analyzed as well as the utilization conditions is underway