The aim of this work is to make an assessment of the dynamics of the radioecological conditions in the 30-km zone of influence of the Beloyarsk NPP after the commissioning of the BN-800 power-generating unit. Based on the established network of terrestrial ecosystems, it is shown that the operation of BN-800 did not increase the content of ⁹⁰Sr, ¹³⁷Cs, and ^239+240Pu in the soil and vegetation. The ¹³⁷Cs contamination density of the soil, as a rule, fluctuates in the range 5–8 kBq/m². Exceptions are individual sections situated 3–10 km to the south-east of the NPP, where a gas-aerosol emission plume is dispersing. Here the ¹³⁷Cs contamination density is 2–3 times greater but these sections of the contamination were formed before BN-800 startup. The ⁹⁰Sr and ^239+240Pu contamination density ranges are, respectively, 1.1–2.5 and 0.08–0.16 kBq/m², which fall within the limits of the fluctuations of the regional background level irrespective of BN-800 startup and distance from the reactor. It is shown that BN-800 emissions had no effect on the concentration of technogenic radionuclides in plants – the ¹³⁷Cs content is equal to 0.5–12 Bq/kg and ⁹⁰Sr to 1.4–19 Bq/kg.

这项工作的目的是对 BN-800 发电机组投产后别洛亚尔斯克核电站 30 公里影响区内的放射性生态条件动态进行评估。基于已建立的陆地生态系统网络，BN-800 的运行没有增加土壤和植被中⁹⁰ Sr、¹³⁷ Cs 和^239+240 Pu的含量。土壤的¹³⁷ Cs 污染密度通常在 5–8 kBq/m ²范围内波动。位于 NPP 东南 3-10 公里处的个别部分除外，在那里气体-气溶胶排放羽流正在扩散。这里的¹³⁷Cs 污染密度是 2-3 倍，但这些污染部分是在 BN-800 启动之前形成的。的^90米Sr和^{239 + 240}莆污染密度范围分别是1.1-2.5和0.08-0.16 KBQ /米²，落于区域背景电平的波动的范围内，不论BN-800启动和距离的从所述反应堆。结果表明，BN-800 排放对植物中技术放射性核素的浓度没有影响—— ¹³⁷ Cs 含量等于 0.5-12 Bq/kg，⁹⁰ Sr含量等于1.4-19 Bq/kg。