Evaluation of dose from external irradiation for individuals living in areas affected by the Fukushima Daiichi Nuclear Plant accident
Evaluation of dose from external irradiation for individuals living in areas affected by the Fukushima Daiichi Nuclear Plant accident
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DOI：
10.1093/rpd/ncu201
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发表时间：
2015-02-01
影响因子：
1
通讯作者：
Ishii, Hideki
中科院分区：
文献类型：
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作者：
Naito, Wataru;Uesaka, Motoki;Ishii, Hideki
为了有效和适当地管理福岛受影响地区的外部辐射剂量，重要的是要确定何时、何地和发生了多少照射。还必须定量测量在日式建筑物中生活和工作的个人的不同活动模式的外部照射和空气剂量率。作者使用了一种新的个人剂量计（D-shuttle）沿着以及全球定位系统和地理信息系统，将个人剂量率与活动模式和空气剂量率联系起来。通过D-穿梭机获得的每小时个人剂量可以为那些想要确定何时和多少暴露发生的人提供有效的沟通工具。对26名志愿者的个人监测表明，从D-航天飞机获得的个人剂量与空气监测调查数据估计的累积空气剂量的30%相似。该分析表明，对于大多数研究志愿者，在家暴露约占总累积剂量的一半。这表明，即使在工作时间以外也可能观察到最高照射剂量，但为了制定适当的对策来减少外部剂量，因此必须确定个人的时间-活动所起的作用。本研究为发展一种现实和实用的方法来估算福岛个人的外照射剂量提供了有价值的基础。
In order to effectively and appropriately manage external radiation doses in the affected areas of Fukushima, it is important to identify when, where and how much exposure occurred. It is also necessary to quantitatively measure external exposure and air dose rates for different activity patterns in individuals living and working in Japanese-style buildings. The authors used a new personal dosemeter (D-shuttle) along with a global positioning system and geographical information system to relate personal dose rate with activity patterns and air dose rate. Hourly individual doses obtained by D-shuttle can provide an effective communication tool for those who want to identify when and how much exposure occurs. Personal monitoring of 26 volunteers showed that personal doses obtained from D-shuttle were similar to 30 % of cumulative air dose estimated by data from the airborne monitoring survey. This analysis showed that, for most study volunteers, the exposure from staying at home represented about half of the total cumulative dose. This suggests that even though the peak exposure doses may be observed outside of working hours, to develop appropriate countermeasures for external dose reduction, it is thus important to identify the contributions of individuals' time-activities. This study provides a valuable basis for developing a realistic and pragmatic method to estimate external doses of individuals in Fukushima.