某还原钛铁矿项目所致公众照射剂量分析  

Analysis on Public Exposure Caused by a Reduced Ilmenite Project

作　　者：李明亮 常青 贾力博 张巍 蔡圃 LI Mingliang;CHANG Qing;JIA Libo;ZHANG Wei;CAI Pu(Guangxi Boyu Ecological Environment Co.,Ltd.,Nanning 530000,China;Guangxi Radiation Safety Supervision Station,Nanning 530222,China)

机构地区：[1]广西博宇生态环境有限公司,广西南宁530000 [2]广西壮族自治区辐射环境监督管理站,广西南宁530222

出　　处：《铀矿冶》2025年第1期117-125,共9页Uranium Mining and Metallurgy

摘　　要：根据某还原钛铁矿(伴生放射性矿)项目运营时污染物的排放情况,预测周围公众不同受照途径的个人有效剂量,分析不同受照途径的贡献份额,为估算该项目对公众产生的辐射剂量提供参考。研究表明,项目运行所致公众最大个人有效剂量为0.09 mSv/a,关键照射途径为氡吸入内照射(贡献份额达80.6%),食入内照射贡献份额为17.8%,吸入放射性核素所致内照射贡献份额为1.6%。项目对周围公众人员的辐射影响满足相关标准要求,相对氡吸入内照射的贡献份额,食入、吸入内照射的贡献份额较少,但不可忽略。According to the emission of pollutants during the operation of a reduction ilmenite(associated radioactive ore)project,the individual effective doses of different exposure routes on the surrounding public were predicted,and the contribution of different exposure routes were analyzed,to provide a reference for estimating the radiation dose of the project to the public.The results show that the maximum individual effective dose of the public members was 0.09 mSv/a,and the key exposure route was radon inhalation irradiation,which contributed 80.6%.The contribution share of ingestion exposure was 17.8%,the contribution of internal exposure due to radionuclides inhalation was 1.6%.The radiation impact of the project on the surrounding public meets the relevant standard requirements.Compared with radon inhalation exposure,the contribution of ingestion and inhalation exposure is smaller,but it cannot be ignored.

关 键 词：伴生放射性矿 钛铁矿 公众照射 受照途径 个人有效剂量 贡献份额 

分 类 号：TL7[核科学技术—辐射防护及环境保护]