Based on a case study on uranium mine No.765 of China National Nuclear Corporation (CNNC), the paper briefly describes disposal program and effect of decommissioning uranium mine/mill facilities and quantitatively...Based on a case study on uranium mine No.765 of China National Nuclear Corporation (CNNC), the paper briefly describes disposal program and effect of decommissioning uranium mine/mill facilities and quantitatively evaluates radon fluxes and doses to man of gaseous airborne pathway from mill tailings and mining debris before and after decommissioning, including annual individual effective dose to critical groups and annual collective effective dose to the population within 80 km region of the facilities.展开更多
On June 2011, the Beijing Research Institute of Uranium Geology, an Institute within the China National Nuclear Corporation （CNNC）, and the Department of Geology ＆ Mining CNNC carried out a project Scientific Drill...On June 2011, the Beijing Research Institute of Uranium Geology, an Institute within the China National Nuclear Corporation （CNNC）, and the Department of Geology ＆ Mining CNNC carried out a project Scientific Drilling.for Deep Metallogenic Research in the Xiangshan Large Uranium Ore Field. A year later on June 21, the project, representing the first scientific drilling of China＇s uranium, was officially launched, and successfully completed on June 17, 2013. A 2818.88 m of drilling depth has broken the previous record 1200 m of exploration depth.展开更多
This study investigates the critical issue of radiation contamination in Mailuu-Suu,Kyrgyzstan,a legacy of extensive uranium mining and milling operations during the Soviet era.The research centers on the environmenta...This study investigates the critical issue of radiation contamination in Mailuu-Suu,Kyrgyzstan,a legacy of extensive uranium mining and milling operations during the Soviet era.The research centers on the environmental behavior and health impacts of radon-222 and associated radionuclides emanating from uranium mill tailings.A comprehensive year-long indoor radon monitoring program(July 2001-July 2002)revealed radon concentrations that substantially exceeded the national Radiation Safety Standards(RSS-96),posing serious health risks to local populations.Approximately 1.9 million cubic meters of uranium mill tailings,distributed across multiple unsecured waste dumps,were assessed for their radiological burden.While precise activity levels remain undocumented,it is estimated that these tailings represent tens of thousands of tonnes of radioactive material.Based on typical uranium ore residue densities and grades,this volume could contain over 3-5 million tonnes of material,with estimated activities ranging from 10^(13) to 10^(15) becquerels,depending on radionuclide composition.Epidemiological data indicate elevated rates of cancer,respiratory illnesses,and congenital anomalies,particularly among vulnerable groups such as children,pregnant women,and the elderly.The findings highlight an urgent need for targeted environmental remediation,continuous radiological surveillance,and public health strategies to mitigate long-term risks and enhance ecological and human safety in the region.展开更多
Nuclear power was designed to produce electric power. Each part of the chain from uranium mining to handling of the waste is linked to serious contamination risks, however. Uranium mining is generally linked to local ...Nuclear power was designed to produce electric power. Each part of the chain from uranium mining to handling of the waste is linked to serious contamination risks, however. Uranium mining is generally linked to local to regional contamination. The fuel production also produces depleted uranium at a ratio of 1:7. The reactors are operating under danger of accidents. Numerous minor accidents and endless temporary shut-downs are occasionally mixed with disastrous accidents. The Chernobyl (1986) and Fukushima (2011) accidents are notorious. The radioactive contamination from those accidents is still incomprehensible and will keep serious destructions of the environment for centuries to come. The handling of the high-level nuclear waste remains unsolved. Methods proposed in Sweden, Finland and France seem likely to lead to disastrous radioactive contaminations in the future. The only way out of this dilemma seems to be a disposal where the waste, though effectively sealed-off in the bedrock, remains accessible and controllable. At present, the “cost & benefit” balance seems strongly tilted over to the “far too costly side”, however.展开更多
文摘Based on a case study on uranium mine No.765 of China National Nuclear Corporation (CNNC), the paper briefly describes disposal program and effect of decommissioning uranium mine/mill facilities and quantitatively evaluates radon fluxes and doses to man of gaseous airborne pathway from mill tailings and mining debris before and after decommissioning, including annual individual effective dose to critical groups and annual collective effective dose to the population within 80 km region of the facilities.
文摘On June 2011, the Beijing Research Institute of Uranium Geology, an Institute within the China National Nuclear Corporation （CNNC）, and the Department of Geology ＆ Mining CNNC carried out a project Scientific Drilling.for Deep Metallogenic Research in the Xiangshan Large Uranium Ore Field. A year later on June 21, the project, representing the first scientific drilling of China＇s uranium, was officially launched, and successfully completed on June 17, 2013. A 2818.88 m of drilling depth has broken the previous record 1200 m of exploration depth.
文摘This study investigates the critical issue of radiation contamination in Mailuu-Suu,Kyrgyzstan,a legacy of extensive uranium mining and milling operations during the Soviet era.The research centers on the environmental behavior and health impacts of radon-222 and associated radionuclides emanating from uranium mill tailings.A comprehensive year-long indoor radon monitoring program(July 2001-July 2002)revealed radon concentrations that substantially exceeded the national Radiation Safety Standards(RSS-96),posing serious health risks to local populations.Approximately 1.9 million cubic meters of uranium mill tailings,distributed across multiple unsecured waste dumps,were assessed for their radiological burden.While precise activity levels remain undocumented,it is estimated that these tailings represent tens of thousands of tonnes of radioactive material.Based on typical uranium ore residue densities and grades,this volume could contain over 3-5 million tonnes of material,with estimated activities ranging from 10^(13) to 10^(15) becquerels,depending on radionuclide composition.Epidemiological data indicate elevated rates of cancer,respiratory illnesses,and congenital anomalies,particularly among vulnerable groups such as children,pregnant women,and the elderly.The findings highlight an urgent need for targeted environmental remediation,continuous radiological surveillance,and public health strategies to mitigate long-term risks and enhance ecological and human safety in the region.
文摘Nuclear power was designed to produce electric power. Each part of the chain from uranium mining to handling of the waste is linked to serious contamination risks, however. Uranium mining is generally linked to local to regional contamination. The fuel production also produces depleted uranium at a ratio of 1:7. The reactors are operating under danger of accidents. Numerous minor accidents and endless temporary shut-downs are occasionally mixed with disastrous accidents. The Chernobyl (1986) and Fukushima (2011) accidents are notorious. The radioactive contamination from those accidents is still incomprehensible and will keep serious destructions of the environment for centuries to come. The handling of the high-level nuclear waste remains unsolved. Methods proposed in Sweden, Finland and France seem likely to lead to disastrous radioactive contaminations in the future. The only way out of this dilemma seems to be a disposal where the waste, though effectively sealed-off in the bedrock, remains accessible and controllable. At present, the “cost & benefit” balance seems strongly tilted over to the “far too costly side”, however.
