Radiometric emanation method in characterization or inorganic sorbents used for treatment of gaseous and liquid radioactive waste

A the Nuclear Research Institute, Rez (Czech Republic) a non-traditional method called Emanation Thermal Analysis has been developed which can be used for characterization of the thermal stability and radiation stability of sorbents as well as for characterization of the stability of solid during interactions with liquid and gaseous components. The method is based on the measurements of radon release rate from samples that have been previously labeled with the parent radionuclides of radon i.e. 228Th, 224Ra. This report presents the results of characterization studies on inorganic sorbents used for the removal of RuO4 from a gaseous effluent and Cs and Sr from liquid NPP wastes. The Radiometric Emanation Method has also been used to characterize sorbents supplied by other participants in the Co-ordinated Research Programme. (author). 9 refs, 15 figs, 10 tabs