Standard test method of iodine sorbents for nuclear power stations

Standard GOST R 54443-2011 had been established for iodine sorbents using at nuclear power station that allow to determine the availability ones for applying in off-gas cleaning systems. The main theoretical provisions of standard are given. The duration of contact between gas fl ow with
radioiodine and sorbent is very reasonable parameter according to which the criterion, characterising the sorption capacity of a sorbent, should be specifi ed. The criterion is sorption capacity index that indicates the degree by which radioactive methyliodide concentration is reduced during the contact of this fl ow with sorbent. The index is a general indicator of the kinetics of physical-chemical process, i.e. sorption process that specifi es the sorption capacity of sorbent for physical adsorption process, for chemisorption and for the process taking place through isotopic exchange. The parameter of the testing are given.