Thinova L, Bican R, Fronka A, Johnova K, Solc J, Vosahlik J
Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Brehova 7, Praha, Czech Republic.
DIAMO, s. e., Ul. 28. rijna 184, Pribram, Czech Republic.
Radiat Prot Dosimetry. 2017 Nov 1;177(1-2):149-154. doi: 10.1093/rpd/ncx142.
There are ~7000 mining waste storage facilities including waste rock dumps in the Czech Republic. One of the radiation protection present subjects is a health impact estimation of the huge mass of material in waste rock dumps left after uranium mining. In this document are presented selected results of waste rock dump long-term monitoring in the area of shaft No. 15 (Pribram, CR) and its estimated health impact to the representative person in a village Brod. The external irradiation was estimated based on in situ gamma spectrometry measurement results and on a Monte Carlo model and it turned out to be negligible (tens μSv), while the internal irradiation (RAMARN, ALGADE Environmental and RAMONIS detection systems) is more significant. The estimated total annual effective dose for representative person is mainly caused by indoor radon inhalation. The maximum outdoor radon concentration in summer season was measured during night hours between 9 p.m. and 7 a.m. and could reach thousands Bq/m3. The average indoor concentration measured in randomly selected houses was 450 Bq/m3. The radon exhalation rate was 35-40 mBq m-2 s-1.
捷克共和国有大约7000个采矿废弃物储存设施，包括废石堆。当前辐射防护的一个课题是对铀矿开采后留下的大量废石堆材料对健康的影响进行评估。本文介绍了15号竖井（捷克共和国普日布拉姆）区域废石堆长期监测的部分结果，以及对布罗德村代表性人员的健康影响估计。外部照射是根据现场伽马能谱测量结果和蒙特卡罗模型估算的，结果显示可以忽略不计（几十微希沃特），而内部照射（RAMARN、ALGADE环境和RAMONIS检测系统）则更为显著。代表性人员的估计年有效剂量总量主要由室内氡吸入引起。夏季夜间9点至次日7点测量的室外氡浓度最高，可达数千贝克勒尔每立方米。在随机选择的房屋中测量的室内平均浓度为450贝克勒尔每立方米。氡析出率为35 - 40毫贝克勒尔每平方米每秒。
