Koordination: Thomas Rabung (KIT-INE)
The Collaborative Project CROCK is based on the desire to improve the safety statement for the crystalline rock far-field as a radionuclide migration barrier. The approach of the project is to provide a methodology for defendable decrease in the uncertainty with respect to crystalline host rock far-field radionuclide transport. Both key aspects of radionuclide retention are regarded, i.e. chemical processes and enhanced residence time in stagnant flow-system regions (matrix diffusion). Uncertainty and the associated conservatism are the key problems in application of radionuclide retention for the purpose of improving safety statements around geologic disposal of high-level waste. The project started on 1st of January 2011 and will last 30 months.