Dose estimation and radon action level problems due to nanosize radon progeny aerosols in underground manganese ore mine
Dose estimation and radon action level problems due to nanosize radon progeny aerosols in underground manganese ore mine
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DOI：
10.1016/j.jenvrad.2011.05.008
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发表时间：
2011-09-01
影响因子：
2.3
通讯作者：
Yonehara, Hidenori
中科院分区：
文献类型：
--
作者：
Kavasi, Norbert;Vigh, Tamas;Yonehara, Hidenori
影响剂量转换因子的重要参数之一是未附着短寿命氡子体的比例。这可能与考虑特殊工作场所（如矿井）时为室内条件确定的值不同。本文调查了矿井中氡及其短寿命子体的浓度，确定了短寿命子体中未附着的部分。同时计算了某锰矿两个回采工作面8月份的氡平衡系数，工作时间内1、2工作面平均氡浓度分别为220 Bq m（-3）和530 Bq m（-3）;平均短寿命子体浓度分别为90 Bq m（-3）和190 Bq m（-3），平均平衡因子分别为0.46和0.36，平均未连接部分分别为0.21和0.17。计算的剂量转换因子在9和27 mSv WLM-1之间，但也可能有更高的值。(C)2011爱思唯尔有限公司保留所有权利。
One of the essential parameters influencing of the dose conversion factor is the ratio of unattached short-lived radon progeny. This may differ from the value identified for indoor conditions when considering special workplaces such as mines. Inevitably, application of the dose conversion factors used in surface workplaces considerably reduces the reliability of dose estimation in the case of mines.This paper surveyed the concentration of radon and its short-lived radon progeny and identified the unattached fraction of short-lived radon progeny. As well equilibrium factor during the month of August was calculated simultaneously at two extraction faces in a manganese ore mine.During working hours the average radon concentrations were 220 Bq m(-3) and 530 Bq m(-3) at Faces 1 and 2; the average short-lived progeny concentration was 90 Bq m(-3) and 190 Bq m(-3), the average equilibrium factors were 0.46 and 0.36, and the average unattached fractions were 0.21 and 0.17, respectively. The calculated dose conversion factor was between 9 and 27 mSv WLM-1, but higher values could also be possible. (C) 2011 Elsevier Ltd. All rights reserved.