论文标题
评估印度尼西亚南部苏门答腊的Tanjung Enim煤矿中自然放射性浓度和放射学风险
Assessment of Natural Radioactivity Concentration and Radiological Risk in Tanjung Enim's Coal Mine, South Sumatra Indonesia
论文作者
论文摘要
已经进行了环境放射性分析，以确定Tanjung Enims煤矿的环境放射性水平和潜在的放射学危害。已经进行了伽马光谱法以鉴定放射性核素及其活性类型。放射性核素浓度的结果用于确定放射学危害指数，并成为剩余放射性现场的输入数据7.2应用，以确定工人在煤矿中获得的剂量率和长期癌症潜力。煤样品中放射性核素活性平均浓度的结果分别为226RA，232和40K，分别为72.468 bq/kg，86.905 bq/kg和1802.049 bq/kg。而土壤样品分别为226ra，232th和40k 79.205 bq/kg，100.209 bq/kg和1443.275 bq/kg。这两个样品的放射性核素浓度都超过了含煤和土壤的平均值。煤样品的平均放射学危害指数，即Raeq，Hin和Hex，分别为335.500 bq/kg，1.102，0.906。土壤样品分别为333.636 bq/kg，1.115和0.901。索引参数已经低于Unscear推荐，除了HIN，因此在内部途径（例如，用于采矿工人的呼吸道和消化器官）中存在潜在的放射学危害。基于5个现场的5个RESRAD途径的年度总剂量率，即外部伽马，吸入，ra，土壤摄入和饮用水，超过ICRP确定的剂量限制，1 msv/年。 ELCR为6.625*10^-3，超过了Unscear推荐，2.4*10^-4。根据结果，有必要干预Tanjung Enims煤矿的采矿环境。
Environmental radioactivity analysis has been carried out to determine the level of environmental radioactivity and the potential radiological hazards at Tanjung Enims coal mine. Gamma spectroscopy method has been carried out to identify radionuclides and their types of activity. The results of radionuclide concentration are used to determine the radiological hazard index and become input data for the Residual Radioactivity Onsite 7.2 application to determine the dose rate and long-term cancer potential received by workers in coal mines. The results obtained for the average concentration of radionuclide activity in coal samples are 226Ra, 232Th, and 40K are 72.468 Bq/kg, 86.905 Bq/kg, and 1802.049 Bq/kg, respectively. While the soil samples 226Ra, 232Th, and 40K respectively 79.205 Bq/kg, 100.209 Bq/kg, and 1443.275 Bq/kg. The radionuclide concentrations of both samples exceeded the UNSCEAR and worldwide reported averages for coal and soil. The average radiological hazard index for coal samples, namely Raeq, Hin, and Hex, was 335.500 Bq/kg, 1.102, 0.906, respectively. While the soil samples were 333.636 Bq/kg, 1.115, and 0.901, respectively. The index parameter is already lower than the UNSCEAR recommendation except for Hin, so there is a potential radiological hazard in internal pathways such as respiratory and digestive organs for mining workers. The total annual effective dose rate based on 5 RESRAD Onsite 7.2 pathways, namely external gamma, inhalation, radon, soil ingestion, and drinking water, is 1.675 mSv/year, exceeding the dose limits determined by ICRP, 1 mSv/year. The ELCR is 6.625*10^-3 which exceeds the UNSCEAR recommendation, 2.4*10^-4. Based on the results, it is necessary to intervene in the mining environment of the Tanjung Enims coal mine.
