This technical report describes the results of the Nuclear Energy Agency's CLAYTRAC project, in which natural tracer data from nine sites was evaluated to assess potential impacts of disposal of radiological waste in geological repositories. It shows scientific information from numerous sites and applies robust analytical methods to improve the understanding of radionuclide migration and evolution of sites for deep geological disposal. These results improve the understanding of sites, and thus the confidence in safety, for geological disposal of radioactive waste.
Table of contents:
- Introduction - Compilation of Site-Specific Data - Overview of Available Input Data - Modelling Strategy - Results of Model Calculations - Summary of Site-Specific Modelling and Conclusions - Discussion and Conclusions - Appendix A1 - Methodology of Data Collection – Example of a Data Tracking Document - Appendix A2 - Experimental Techniques and Analytical Methods to Characterise Tracer Contents in Argillaceous Formations - Appendix A3 - Specific Aspects Related to Diffusion Coefficients - Appendix A4 - Aspects Pertinent to the Evolution of Boundary and Initial Conditions Over Time - Appendix A5 - Documentation of the Numeric Code Flotran