Abstract |
This volume is the result of work performed under the fourth part (Task D) of a four-part contract to gather technical information to evaluate environmental acceptability of various options for disposal of high-level wastes. The other tasks under the contract are: A-Source Term Characterization, B-Effectiveness of Engineering Controls; and C-Migration Pathways. Task D analyzes the potential for the release of radionuclides from a deep-mined repository (generic in nature) for radioactive wastes. Repositories in five different geologic media were considered-bedded salt, dome salt, granite, basalt and shale. Various containment failure mechanisms are considered and compared to determine their relative importance. Ten failure mechanisms were selected for detailed modeling. The results of Task D can be combined with radionuclide transport and dose calculations to assess the potential effects of a repository on human health. |