Computer-Aided Simulation of Radioactive Pollution of Environment upon Destruction of Geologic Repositories of Radioactive Wastes with Allowance for Uncertainty

摘要

Some mathematical and computer models of the propagation of radioactive pollutants in the environment upon the destruction of geologic repositories of radioactive wastes have been developed with allowance for the interval uncertainty of some physicochemical parameters of the propagation of radioactive pollutants in the environment (the velocity of the rise of underground water from radioactive wastes and the diffusion coefficients of radioactive pollutants in a geologic horizon). Computer-aided simulation results show that the half-life of radioactive wastes, the rate of the leak of radioactive pollutants from a repository, and the velocity of the advection of radioactive pollutants towards the ground are the principal characteristics of the propagation of radioactive pollutants in the environment. These characteristics of the propagation of radioactive pollutants in the environment must be taken into account in the design of safe geologic repositories of radioactive wastes. As a result of the computer-aided simulation of the propagation of radioactive pollutants, it has been established that the minimization of the radioactive pollution dose requires that the hermeticity periods of geologic repositories exceed or be nearly equal to the half-lives of radioactive pollutants.