Kemakta has been involved in the development of the safety assessment for the planned repository for long-lived radioactive waste, SFL. Our focus has been on the development of radionuclide transport models for both the near field and the geosphere, providing support to project management and contributing to key sections of the reporting. Our work has included the methodology applied in the safety assessment, as well as the evaluation, interpretation, and description of the results from radionuclide transport modeling. Kemakta has also contributed to the presentation of conclusions from the safety assessment from an integrated perspective.
A crucial part of our work has been the development of the radionuclide transport model for the geosphere in Marfa-NR (Node Routing). Marfa-NR differs from traditional radionuclide transport codes in that radionuclides do not travel along a predetermined path but can instead move freely from fractures in the repository walls to the surface through one or more flow fields generated from hydrogeological evaluations. This more realistic approach allows for a better description and evaluation of dispersion processes in the rock and at the surface.
