考虑福岛事故后从空气剂量率到每小时个人体外剂量的换算系数 - 对福岛县东京电力公司一名员工在 9 年期间的个人体外剂量进行测量。

IF 1.4 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
Toshihiro Ueno, Toshiaki Ishii, Keizo Uchiyama, Tadahiko Ando, Motofumi Saisu, Koichi Takizawa, Yuji Endo
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引用次数: 0

摘要

2011 年福岛第一核电站(FDNPP)事故导致放射性物质扩散到整个周边地区,位于 FDNPP 东北方向约 60 公里处的福岛市甚至证实了空气剂量率的增加。东京电力公司(TEPCO)控股公司的一名员工自 FDNPP 事故发生后一直在福岛市生活和工作,他测量了个人外部剂量、GPS 数据以及他从 2014 年开始的 9 年间在福岛县的活动情况。这些数据提供了有关该地区的宝贵信息。数据显示了以下结果:  将家庭所在地的空气剂量率与家庭每小时的个人外照射剂量进行比较,结果显示,平均转换系数在 9 年中不断增加,自 2019 年以来已超过 0.3,表明总体相关性相对较好。  在福岛市混凝土结构四楼的办公室测量的个体外照射剂量从 2014 年到 2022 年没有显著变化,而空气剂量率则出现下降。  户外个体外照射剂量,例如步行上下班时测量的剂量,与空气监测的空气剂量率具有相对较强的相关性,换算系数约为 0.6。在本研究中,个人体外剂量数据适用于东京电力公司的测量人员,并不一定代表福岛市的所有居民。然而,连续 9 年的个人外照射剂量数据将有助于根据空气剂量率估算个人外照射剂量,以及估算年度额外照射剂量,如果其中某些数据适用于类似的生活模式和生活方式的话。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Consideration of the conversion factor from air dose rates to individual external dose per hour after the Fukushima accident-individual external dose measurements of a TEPCO employee in Fukushima prefecture over a 9 year period.

The accident at Fukushima Daiichi Nuclear Power Plant (FDNPP) in 2011 resulted in the dispersion of radioactive materials throughout the surrounding area and an increase in the air dose rate was even confirmed in Fukushima City, which is located approximately 60 km northeast of FDNPP. A Tokyo Electric Power Company (TEPCO) Holdings employee, who has lived and worked in Fukushima City since the FDNPP accident, measured individual external doses, GPS data, and his activities in Fukushima Prefecture over a 9 year period beginning in 2014. This data provides valuable information about the area. The data show the following results. (i) Comparison of the air dose rate at the home location to the individual external dose per hour at the home shows that the average conversion factor has increased over the 9 years and exceeded 0.3 since 2019, indicating an overall relatively good correlation. (ii) Individual external doses measured in the office on the fourth floor of a concrete structure in Fukushima City have not changed significantly from 2014 to 2022, when air dose rates showed a decrease. (iii) Outdoor individual external doses, such as those measured when commuting on foot, have a relatively strong correlation with air dose rates from airborne monitoring with the conversion factor of about 0.6. The conversion factor do not differ significantly from 2014 to 2022.In this study, the individual external dose data is applicable to the TEPCO measurer and is not necessarily representative of all residents of Fukushima City. However individual external dose data for 9 consecutive years will be useful for estimating individual external doses from air dose rates, and estimating annual additional exposure doses, if even some of them are applicable to similar life patterns and lifestyles.

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来源期刊
Journal of Radiological Protection
Journal of Radiological Protection 环境科学-公共卫生、环境卫生与职业卫生
CiteScore
2.60
自引率
26.70%
发文量
137
审稿时长
18-36 weeks
期刊介绍: Journal of Radiological Protection publishes articles on all aspects of radiological protection, including non-ionising as well as ionising radiations. Fields of interest range from research, development and theory to operational matters, education and training. The very wide spectrum of its topics includes: dosimetry, instrument development, specialized measuring techniques, epidemiology, biological effects (in vivo and in vitro) and risk and environmental impact assessments. The journal encourages publication of data and code as well as results.
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