Source Term Model for Radioactive Waste Repositoryby Chang-Lak Kim, Korea Atomic Energy Research Inst, Daejeon, Republic of Korea,
Jhinwung Kim, Korea Atomic Energy Research Inst, Daejeon, Republic of Korea,
Abstract: A radioactive waste repository source term model is developed to predict radionuclide release rates from solidified waste packages disposed of in underground repository. Leach rates, i.e., the rates at which radionuclides are released from the solid waste form into the contacting groundwater, constitute the source term to radionuclide hydrogeological transport models. Leaching submodels included in the source term model are the following: solubility-limited release, congruent release, solid diffusion controlled release, gap inventory release, and overflow release. A preliminary calculation shows that the effect of exposed surface area ratio on the release of radionuclides from waste disposal container can not be neglected.
Subject Headings: Radioactive wastes | Solid wastes | Radioactive materials | Hydrologic models | Waste disposal | Solidification | Solid mechanics | Hydrogeology
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