Spatiotemporal distribution of the atmospheric 14 C around Ningde NPP.

Autor: Huang YJ; Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, 215004, PR China. Electronic address: hyj1231@163.com., Sun XF; Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, 215004, PR China., Yang ZZ; Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, 215004, PR China., Lin MG; Fujian Radiation Environment Supervision Station, Fuzhou, 350013, PR China., Guo GY; Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, 215004, PR China., Tao NG; Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, 215004, PR China.
Jazyk: angličtina
Zdroj: Journal of environmental radioactivity [J Environ Radioact] 2022 Oct; Vol. 251-252, pp. 106958. Date of Electronic Publication: 2022 Jul 04.
DOI: 10.1016/j.jenvrad.2022.106958
Abstrakt: In this paper, the sampling and monitoring methods of atmospheric 14 C around Ningde NPP were presented, and the variations and trends during 2013-2021 were statistically analyzed and comparatively studied with worldwide reported values around NPPs. Meanwhile, the correlation study with the gaseous effluent emission amount from Ningde NPP was analyzed, and the spatial distribution of the atmospheric 14 C around Ningde NPP was simulated with the atmospheric release based on the long-term meteorological parameters with the plume diffusion model. It was shown that the average specific activity of atmospheric 14 C at each sampling site ranged from 229 to 230 mBq/gC, and the weak evidence of influence on the nearest sampling site from the release of the NPP could be observed. Seasonal variations of 14 C specific activity were analyzed, and it was shown that, except for the site 1.7 km from the NPP, the specific activity of the atmospheric 14 C was higher in summer and autumn and lower in winter and spring. Besides, it was shown that the excess 14 C for long-term monitoring results around the NPP was consistent with the simulated values on the order of magnitude.
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Databáze: MEDLINE
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