Journal
SCIENCE AND TECHNOLOGY OF NUCLEAR INSTALLATIONS
Volume 2022, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2022/7265821
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Funding
- Nuclear Power Safety Monitoring Technology and Equipment [K-A2019.413]
- Natural Science Foundation of the Anhui Higher Education Institutions of China [KJ2020A0110]
- Outstanding Talent Support Program in University of Anhui Province
- Institutional Center for Shared Technologies and Facilities of INEST, HFIPS, CAS
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In this study, a hydrodynamic model based on shallow water equations was established to simulate the dispersion of radioactive pollutants in coastal waters. The simulation results validated the accuracy of the model and revealed the significant influence of hydrological conditions on the distribution features of radionuclides.
The radionuclide dispersion in coastal water is mainly controlled by the water flow and tidal effect. Tracing and analysis of radioactive pollutant dispersion in coastal water can predict distribution of radionuclide under marine transportation accident of spent fuel. In this work, factors such as continuous emission, radioactive decay, and water depth are considered, and a hydrodynamic model of radionuclide dispersion based on shallow water equations is established to simulate the dispersion of the radioactive pollutant in coastal waters under different hydrological conditions. As far as the characteristics of the radionuclide dispersion in coastal water are concerned, the simulation of pollutants by the hydrodynamic model is in good agreement with the work of Bailly du Bois et al., which validated the correctness of this model. The model has been applied to simulate the distribution of radionuclides in coastal water following a marine transport accident of spent fuel near Daya Bay Nuclear Power Plant in China. The simulation reveals that the distribution features are significantly affected by different hydrological conditions. In addition to limiting the diffusion range, the vortex effect can also cause the accumulation of radionuclides near the vortex, which helps to provide more practical information for nuclear emergency decision makers.
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