A kinetic model for the radiolysis of chloride brine, its sensitivity against model parameters and a comparison with experiments

To model the radiolytic processes in concentrated chloride brine published data (reactions and rate constants) of the radiation chemical reactions are collected and compiled in the annex. Furthermore a set of primary radiolytic yields (G-values) is made up from published experimental data (gamma) or derived from theoretical considerations (alpha). The reaction schemes for the potential contaminants Ni"2"+, Fe"2"+, Br"- and CO_3"2"- as well as a scheme which allows to model the oxidative dissolution of solid UO_2 can be implemented. The sensitivity of the kinetic model for the radiolysis of pure water and of 5 M NaCl solution at pH 8 against the variation of rate constants and G-values is determined. Sensitivity analyses for gamma and alpha irradiation and for systems with constant radiolysis gas release and for such with no gas release are conducted separately. (orig.)Contract number FIKW-CT-2001-00192 SFSAvailable from TIB Hannover: ZA 5141(6977) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman