AREST (Analytical Repository Source-Term): A probabilistic source-term code for waste package performance analysis

The engineered barrier system is the first of several man-made and natural barriers to the release and migration of radioactive wastes from a geologic repository to the accessible environment. The Analytical Repository Source-Term (AREST) code has been developed to provide a quantitative assessment of the performance of the EBS and individual barriers thereof relative to the regulatory requirements for the isolation of nuclear wastes. The AREST code integrates mechanistic models of chemical and physical process that affect radionuclide release into a unified probabilistic framework. 30 refs., 3 figs.