Selected aspects of barrier materials assessment as a part of the reaction on threats and risks connected with cbrn problems

The protection of civilians, military professionals, including specialists of the Czech Armed Forces chemical corps, specialists of the Czech Republic Fire Rescue Service chemical service and, last but not least, employees of industrial enterprises against toxic substances is a long-term priority of the responsible state administration bodies. The priorities of these state bodies are focused on protection of the civilian population and industrial workers against the effects of toxic substances and related material equipment. The current security environment is characterized by a range of threats, including the proliferation of weapons of mass destruction and the possibility of releasing industrial hazardous substances such as toxic industrial materials into the environment. It is therefore possible to talk about the phenomenon of CBRN (C-chemical, B-biological, R-radiological, N-nuclear) threats that are expressed by the existence or use of nuclear, biological or chemical means against the civilian population. Critical Infrastructure means both production and non-production systems, the malfunctioning of which would have serious implications for security, economy and the preservation of the essential scope of other essential functions of the state in crisis situations. The risk of the CBRN threat is determined by the degree of severity expressed by the constantly expanding range of entities that have or are seeking to obtain them. The aim of the chapter is to notice that barrier materials used in the branch of individual protection must be assessed in accordance with those characteristics which are connected with resistivity against the permeation of toxic compounds.