向 Pivdennoukrainska NPP 监视区自然环境排放放射性核素的时间模式。

V A Prylypko, M M Morozova, Yu Yu Ozerova, A V Gryshan, O O Pelukh
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引用次数: 0

摘要

目的:根据 2015-2021 年期间的辐射监测参数,评估 Pivdennoukrainska 核电站(PUNPP)的运行对监视区(SZ)环境的影响。方法:社会卫生学(辐射监测参数分析)、分析、统计:结果:在日常条件下,与 PUNPP 生产周期中产生的放射性物质的排放和排出有关的环境辐射影响被认为是微不足道的。惰性放射性气体、长效核素和 131I 的气体-气溶胶大气排放量未超过规定的允许水平 (PL),惰性放射性气体和长效核素的排放量为排放限值 (EL) 的百分之一,放射性碘的排放量为千分之一。PUNPP 电站机组向大气排放的 51Cr、54Mn、59Fe、58Co、60Co、90Sr、95Zr、95Nb、134Cs、137Cs 和 3Н 放射性核素总量(实际排放量和 EL 百分比)均未超过规定的 PL 值。在 2015-2021 年期间,深圳大气中 137Cs 浓度的最大平均值介于 2.858 μBq/m3 (PUNPP 工业用地)至 1.986 μBq/m3 (Riabokoneve 村,距离 33.5 公里)之间,空气中 90Sr 浓度的最大平均值分别介于 1.310 μBq/m3 至 0.566 μBq/m3 之间。根据放射性核素监测,在 PUNPP 向 Pivdennyi Bug 河排污后,地表水的质量没有发生重大变化。在 PUNPP SZ 的农产品中,137Сs 的比活度很小,没有超过食品中的 PL 含量。PUNPP SZ 样品中 137Cs 的含量不超过总活度的 1.0%:PUNPP SZ 居民区大气中放射性核素的平均浓度比法规文件规定的浓度低几个数量级。根据监测到的放射性核素参数,PUNPP 向 Pivdennyi Bug 河的排放并未显著改变地表水的水质。在距离核电厂的所有观测半径内,90Sr 和 137Cs 的含量都是一致的,这证实了 PUNPP 的 90Sr 和 137Cs 环境排放水平非常低。核电厂安全区内农产品的 137Cs 含量明显低于临界值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
TIME PATTERN OF RADIONUCLIDE EMISSIONS AND DISCHARGES INTO THE NATURAL ENVIRONMENT OF THE PIVDENNOUKRAINSKA NPP SURVEILLANCE ZONE.

Objective: assessment of impact of operation of the Pivdennoukrainska Nuclear Power Plant (PUNPP) on the environment of surveillance zone (SZ) based on parameters of radiation monitoring within 2015-2021 period.

Methods: socio-hygienic (analysis of the radiation monitoring parameters), analytical, statistical.

Results: The environmental radiation impact associated with emissions and discharges of radioactive substances originated in the production cycle of the PUNPP in everyday conditions was found as insignificant. The gas-aerosol atmospheric emissions of inert radioactive gases, long-lived nuclides, and 131I did not exceed the established permissible levels (PL) and amounted to a hundredth of a percent of the emission limit (EL) for the inert radioactive gases and long-lived nuclides, and a thousandth of a percent for radioactive iodine. Total atmospheric emissions of the 51Cr, 54Mn, 59Fe, 58Co, 60Co, 90Sr, 95Zr, 95Nb, 134Cs, 137Cs, and 3Н radionuclides by the PUNPP power units (actual and % of EL) did not exceed the established PL. Maximum average values of atmospheric air concentration of 137Cs in SZ forthe 2015-2021 period ranged from 2.858 μBq/m3 (PUNPP industrial site) to 1.986 μBq/m3 (Riabokoneve village, 33.5 km distance), and maximum average values of the 90Sr air concentration were from 1.310 μBq/m3 to 0.566 μBq/m3, respectively. According to radionuclide monitoring no significant change of the quality of surface water occurred upon the PUNPP discharges to the Pivdennyi Bug River. Specific activity of the 137Сs in agricultural products in the PUNPP SZ was insignificant and not exceeding the PL of the content in food products. Content of 137Cs in the samples from the PUNPP SZ did not exceed 1.0 % of the total activity.

Conclusion: Average concentration of radionuclides in atmospheric air of the settlements in the PUNPP SZ was several orders of magnitude lower than that established by regulatory documents. The PUNPP discharges to the Pivdennyi Bug River, according to radionuclide parameters that are monitored, have not significantly changed the quality of surface water. The content of 90Sr and 137Cs was uniform in all observation radii of distance from the NPP, confirming the very low level of 90Sr and 137Cs environmental emission by the PUNPP. The content of 137Cs in agricultural products within the PUNPP SZ was significantly lower than PL.

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Problemy radiatsiinoi medytsyny ta radiobiolohii
Problemy radiatsiinoi medytsyny ta radiobiolohii Medicine-Radiology, Nuclear Medicine and Imaging
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