Abstract

Safety and uncertainty analyses for the shallow-land disposal of radioactive wastes with uranium decay chain were performed using the deterministic and probabilistic safety assessment models. The deterministic analyses show that the dose calculation in residence scenario is of great importance owing to the influence of daughters built up by uranium decay chain. The parameter uncertainties for the important pathways in residence scenario are estimated from the probabilistic analyses using the statistical methodology. The uncertainty analysis indicates that the influence of parameter uncertainty is the most remarkable in the estimation for the inhalation of radon gas with residence.

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