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Yang, B.*; Onda, Yuichi*; Omori, Yoshihiro*; Sekimoto, Hitoshi*; Fujiwara, Toru*; Wakiyama, Yoshifumi*; Yoshimura, Kazuya; Takahashi, Junko*; Sun, X.*
Science of the Total Environment, 603-604, p.49 - 56, 2017/12
Times Cited Count：2 Percentile：6.18(Environmental Sciences)Itoi, Tatsuya*; Nakamura, Hideo; Nakanishi, Nobuhiro*
Nihon Genshiryoku Gakkai-Shi ATOMO
, 58(5), p.318 - 323, 2016/05
no abstracts in English
Saegusa, Hiromitsu; Onoe, Hironori; Kohashi, Akio; Watanabe, Masahisa
Proceedings of 23rd International Conference on Nuclear Engineering (ICONE-23) (DVD-ROM), 7 Pages, 2015/05
Fukushima Daiichi Nuclear Power Plant of Tokyo Electric Power Company is facing contaminated water issues. The amount of contaminated water is continuously increasing due to groundwater leakage into the underground part of reactor and turbine buildings. Therefore, it is important to understand the groundwater flow conditions at the site and to predict the impact of countermeasures taken for isolating groundwater from the source of the contamination, i.e. the reactor buildings. Installations, such as of land-side and sea-side impermeable walls have been planned as countermeasures. In this study, groundwater flow modeling has been performed to estimate the response of groundwater flow conditions to the countermeasures. From the modeling, groundwater conditions and changes in response to implementation of the countermeasures could be reasonably estimated. The results indicate that the countermeasures will decrease the volume of inflow into underground part of the buildings. This means that the countermeasures will be effective in reducing the discharge volume of contaminated groundwater to ocean.
Mitamura, Hisayoshi
JAERI-Review 2003-007, 54 Pages, 2003/03
JAERI-Review-2003-007.pdf:3.36MB
The inevitable increases of food production and energy consumption with an increase in world population become main causes of an increase of nitrate load to the environment. Although nitrogen is essential for the growth of animal and plant as a constituent element of protein, excessive nitrate load to the environment contaminates groundwater resources used as drinking water and leads to seriously adverse effects on the health of man and livestock. In order to clarify the problem of nitrate contamination of groundwater and search a new trend of technology development from the viewpoint of environmental remediation and protection, the present paper has reviewed adverse effects of nitrate on human health, the actual state of nitrogen cycle, several kinds of nitrate sources, treatment methods for reducing nitrate level, etc.
Chino, Masamichi; Ishikawa, Hirohiko; Yamazawa, Hiromi
Radiation Protection Dosimetry, 50(2-4), p.145 - 152, 1993/00
no abstracts in English
Chino, Masamichi
Nihon Genshiryoku Gakkai-Shi, 32(4), p.395 - 402, 1990/04
Times Cited Count：1 Percentile：19.39(Nuclear Science & Technology)no abstracts in English
Togawa, Orihiko
no journal, ,
The Japan Atomic Energy Agency (JAEA) is a designated public institution under the Disaster Countermeasures Basic Act and the Armed Attack Situation Response Law. The JAEA provides technical assistance to national and local governments in case of a nuclear or radiological emergency. The Nuclear Emergency Assistance and Training Center (NEAT) is a main center of the technical assistance in case of emergency, and dispatches experts of JAEA to an off-site center etc., gives them technical advice and supplies equipment and materials. The presentation gives a role and structure of the designated experts, who provide technical assistance together with NEAT staff.
