Tripathi R M, Sahoo S K, Jha V N, Khan A H, Puranik V D
Environmental Assessment Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
Appl Radiat Isot. 2008 Nov;66(11):1666-70. doi: 10.1016/j.apradiso.2007.12.019. Epub 2008 Apr 29.
The uranium mines at Jaduguda and nearby areas of the Singhbhum thrust belt of Jharkhand State are the only operating mines in India, which supply fuel to nuclear power plants. The gamma radiation dose rates observed at different locations 1m above the tailings surface vary from 0.8 to 3.3 microGy h(-1). The geometric mean activity concentration of (222)Rn in air over the tailings ponds I and II were found to be 30 and 23 Bq m(-3), respectively, but reduces to the local background level at the boundaries of the tailings ponds. The uranium and (226)Ra levels in the ground water sources in the vicinity of the tailings pond are very similar to the regional average of 3.6 microg L(-1) and 23 mBq L(-1), respectively, indicating that there is no ground water migration of radioactive material from the tailings pond. This paper gives a brief account of the environmental radioactivity monitoring during uranium mining, ore processing and waste management operations.
贾杜古达的铀矿以及恰尔肯德邦辛格布姆逆冲带附近地区的铀矿，是印度仅有的在运营的铀矿，为核电站提供燃料。在尾矿表面上方1米处不同位置观测到的伽马辐射剂量率在0.8至3.3微戈瑞每小时之间变化。尾矿池I和II上空空气中（222）氡的几何平均活度浓度分别为30和23贝克勒尔每立方米，但在尾矿池边界处降至当地背景水平。尾矿池附近地下水源中的铀和（226）镭水平，分别与区域平均值3.6微克每升和23毫贝克勒尔每升非常相似，这表明没有放射性物质从尾矿池向地下水迁移。本文简要介绍了铀矿开采、矿石加工和废物管理作业期间的环境放射性监测情况。
