期刊论文

Risk assessment of respiratory exposure from uranium mine dust after using masks

中文

辐射防护

1000-8187

2019

39

1

13-18

国家自然科学基金面上项目(11575080) 国家安全生产监督管理总局安全生产重大事故防治关键技术科技项目(hunan-0015-2015AQ) 南华大学博士科研启动基金(2015XQD38).

本校为第一机构

铀矿尘中含有大量的长寿命α放射性核素,其对铀矿井下工人内照射剂量具有不容忽视的贡献。为研究经两种常用口罩过滤后的铀矿尘颗粒物的呼吸暴露风险,本文采用铀矿尘颗粒物的呼吸暴露风险评价模型和经两种常用口罩过滤后的铀矿尘颗粒物的粒径和浓度监测数据,对南方某铀矿井下工人进行了呼吸暴露风险评价,计算了铀矿尘颗粒物的呼吸暴露剂量和暴露风险指数。结果表明: 1)在铀矿井下各典型作业场所中,独头巷道、采场和主风机房是铀矿井下工人所受呼吸暴露剂量较大的主要场所; 2)佩戴纱布口罩和KN95口罩后铀矿尘所致剂量分别为0.14~ 2.01 mSv /a、0.03~ 0.53 mSv /a,佩戴KN95型口罩时的呼吸暴露剂量...

A large number of long-lived α radioactive nuclides exist in uranium dust. Their contribution to uranium mine worker dose can not be ignored. The monitoring data of diameter and concentration of uranium dust particles after filtering with two commonly used masks were studied using the respiratory exposure risk evaluation model of uranium dust particles. The respiratory exposure dose and risk index were calculated for workers in a southern uranium mine. The results showed that: 1) Blind drift,stope and the main ventilation mashine room were the...