Environmental Radiation Status In and Around Tokyo Immediately After the TEPCO Fukushima Dai-ichi Nuclear Power Plant Disaster

Environmental radiation monitoring is one of the important efforts in protecting society and the environment from radiation hazards, both natural and artificial. The presence of three nuclear research reactors and plans to build a nuclear power plant reactor prompted Indonesia to prepare a radiation monitoring system for safety and security (SPRKK). The goal of the study is to provide an appropriate method for developing radiation monitoring system to support the development of nuclear power plant in the near future. For this preliminary study, the author developed a code program using Gaussian distribution model approach for predicting radionuclide release and individual dose acceptancy by human being within 16 wind directions sectors and up to 50 km distance. The model includes estimation of source term from the nuclear installation, release of radionuclides source into air following Gaussian diffusion model, some of the release deposit to the land and entering human being through inhalation, direct external exposure, and resuspension, and predicted its accepted individual dose. This model has been widely used in various code program such as SimPact and PC-Cosyma. For this study, the model will be validated using SimPact code program. The model has been successfully developed with less than 5% deviation. Further study will be done by evaluating the model with real measuring data from research reactor installation and prepare for interfacing with real time radiation data acquisition and monitoring as part of radiation monitoring system during normal and accident condition.

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Joint Environmental Radiation Survey by JAEA and KAERI Around the Fukushima Daiichi Nuclear Power Plant

Health Physics ◽

10.1097/hp.0000000000001471 ◽

2021 ◽

Vol Publish Ahead of Print ◽

Author(s):

Young-Yong Ji ◽

Kotaro Ochi ◽

Sang Bum Hong ◽

Shigeo Nakama ◽

Yukihisa Sanada ◽

...

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Environmental Radiation ◽

Fukushima Daiichi

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Mental Health Status of Children After the Great East Japan Earthquake and Fukushima Daiichi Nuclear Power Plant Accident

Asia Pacific Journal of Public Health ◽

10.1177/1010539516675702 ◽

2017 ◽

Vol 29 (2_suppl) ◽

pp. 131S-138S ◽

Cited By ~ 4

Author(s):

Hirobumi Mashiko ◽

Hirooki Yabe ◽

Masaharu Maeda ◽

Syuntaro Itagaki ◽

Yasuto Kunii ◽

...

Keyword(s):

Mental Health ◽

Health Status ◽

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Mental Health Status ◽

Great East Japan Earthquake ◽

Environmental Radiation ◽

Fukushima Daiichi ◽

Usual State

The disaster at the Fukushima Daiichi Nuclear Power Plant after the Great East Japan Earthquake on March 11, 2011, might have affected the mental health status of children. To assess the mental health status, we measured the Strengths and Difficulties Questionnaire (SDQ) in 15 274 children (aged 4-15 years). The proportions of those who scored above the cutoff (≥16) of SDQ, reflecting the clinical range of the mental health status, were 25.0% (aged 4-6 years), 22.0% (aged 7-12 years, and 16.3% (aged 13-15 years), which were higher than that in the usual state (9.5%). We also explored the possibility that the distribution on the Fukushima prefectural map of the proportions of those who scored above the cutoff (≥16) of SDQ might correspond with the environmental radiation levels, but there was no significant correlation.

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