Simple Analysis of Potential Radiological Exposure from Geological Disposal ofCanada's Nuclear Fuel Waste (Analyse Simplifiee du Risque de Radioexposition du au Stockage Geologique des Dechets de Combustible Nucleaire du Canada)

摘要

The analysis applies only to the case of an undisrupted vault. We assume that thevault and geosphere barriers remain intact and prevent immobile radionuclides from reaching the biosphere. However, we also assumed that the three most importnat mobile radionuclides can escape through an undetected manufacturing defect in the container wall, and that the flux of these radionuclides is diluted by well water being used by people. We have defined two cases, depending on whether or not the well water is used for irrigation, and have evaluated these through a drinking water pathway and a specific-activity model, respectively. We have focused on I-129, Cl-36, and C-14, because these nuclides are found to be the dominant source of exposure in more complex analysis, and other nuclides would be expected to be of much less concern in light of knowledge of their behavior in the disposal system.