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Diffusion Law and Simulation Analysis of Radon in Uranium Tailings Based on Multiple Gauss Plume Model

[+] Author Affiliations
Jiaxin Wang, Guohua Wu, Liguo Zhang, Jingyuan Qu, Jiejuan Tong

Tsinghua University, Beijing, China

Paper No. ICONE26-81189, pp. V004T06A008; 6 pages
doi:10.1115/ICONE26-81189
From:
  • 2018 26th International Conference on Nuclear Engineering
  • Volume 4: Nuclear Safety, Security, and Cyber Security; Computer Code Verification and Validation
  • London, England, July 22–26, 2018
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5146-3
  • Copyright © 2018 by ASME

abstract

The radon from uranium tailings spreads fast and has a wide range of pollution, which poses a potential radiation hazard to the environment and the public in downwind region. In this paper, the open and naked uranium tailings are selected as research object. By setting up multiple Gaussian plume models with single point source, the diffusion of radon in the uranium tailings is simulated with different atmospheric stability, average wind speed, height and downwind distance. The results show that the maximum radon concentration increases while the related downwind distance decreases as the atmospheric becoming stable. The higher wind speed does not affect the downwind distance where the maximum radon concentration occurs, but it decreases the maximum radon concentration. The concentration of radon in residential area decreases but the decreasing rate speeds up with height going up. The distribution of radon in vertical and horizontal direction tends to be homogeneous while the near-surface area concentration decreases rapidly as farther downwind distance.

Copyright © 2018 by ASME

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