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JAEA Reports

Study on rational treatment/disposal of contaminated concrete waste considering leaching alteration (Contract research); FY2020 Nuclear Energy Science & Technology and Human Resource Development Project

Collaborative Laboratories for Advanced Decommissioning Science; Hokkaido University*

JAEA-Review 2021-070, 98 Pages, 2022/03


The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2020. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2020, this report summarizes the research results of the "Study on rational treatment/disposal of contaminated concrete waste considering leaching alteration" conducted in FY2020. The present study aims to understand migration behaviors of radionuclides in relation to the properties of concrete materials altered due to leaching, to develop a model to simulate the migration behaviors based on the experimental findings, and to analyze waste management scenarios for radioactive concrete. The focus of the study is the underground concrete structures of Fukushima Daiichi Nuclear Power Station, which is in contact with contaminated water.

Journal Articles

Analysis of JT-60SA scenarios on the basis of JET and JT-60U discharges

Garcia, J.*; Hayashi, Nobuhiko; Giruzzi, G.*; Schneider, M.*; Joffrin, E.*; Ide, Shunsuke; Sakamoto, Yoshiteru; Suzuki, Takahiro; Urano, Hajime; JT-60 Team; et al.

Europhysics Conference Abstracts (Internet), 38F, p.P1.029_1 - P1.029_4, 2014/06

JAEA Reports

A Study on long-term energy scenarios for Japan

Sato, Osamu

JAERI-Research 2005-012, 32 Pages, 2005/05


A study was made on the evolution of energy demand and supply toward the year 2050 and on the potential benefits of nuclear energy utilization in Japan. For this purpose, assumptions were made on future economic growths, improvement in energy intensity, availability and costs of energy sources and energy technologies. Then, based on these assumptions, three cases of long-term energy scenarios were built with a different scale of nuclear energy utilization, and through their comparison possible role of nuclear energy was analyzed. It was indicated from this study that expansion of nuclear energy utilization will contribute to the reduction of fossil energy consumption, and therefore, enhancement of stable supply of energy and substantial reduction of carbon dioxide emissions with low economic costs.

Oral presentation

Evolution of radionuclide transport and retardation processes in uplifting crystalline rocks

Metcalfe, R.*; Kawama, Daisuke*; Benbow, S. J.*; Tachi, Yukio

no journal, , 

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