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JAEA Reports

Study on introduction scenario of the high temperature gas-cooled reactor hydrogen cogeneration system (GTHTR300C), 1

Nishihara, Tetsuo; Takeda, Tetsuaki

JAERI-Tech 2005-049, 19 Pages, 2005/09

JAERI-Tech-2005-049.pdf:1.17MB

Japan Atomic Energy Research Institute is carrying out the research and development of the high temperature gas-cooled reactor hydrogen cogeneration system (GTHTR300C) aiming at the practical use around 2030. Preconditions of GTHTR300C introduction are the increase of hydrogen demand and the needs of new nuclear power plants. In order to establish the introduction scenario, it should be clarified that the operational status of existing nuclear power plants, the introduction number of fuel cell vehicles as a main user of hydrogen and the capability of hydrogen supply by existing plants. In this report, the estimation of the nuclear power plants that will be decommissioned with a high possibility by 2030 and the selection of the model district where the GTHTR300C can be introduced as an alternative system are conducted. Then the hydrogen demand and the capability of hydrogen supply in this district are investigated and the hydrogen supply scenario in 2030 is considered.

JAEA Reports

A Study on long-term energy scenarios for Japan

Sato, Osamu

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

JAERI-Research-2005-012.pdf:4.37MB

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.

Journal Articles

Long-term perspective of nuclear energy supply using uranium extracted from seawater

Uotani, Masaki*; Shimizu, Takao*; Tamada, Masao

Proceedings of 2003 International Congress on Advances in Nuclear Power Plants (ICAPP '03) (DVD-ROM), 8 Pages, 2003/00

The present paper describes the current technology of uranium recovery from seawater by using radiation-induced graft-adsorbent and the utilization scenario of collected uranium from the viewpoint of long-term perspective of nuclear energy demand in Japan. The several thousand tons of uranium will be required in the latter half of 21st century in Japan, even if the plutonium is practically used in fast breeder reactors (FBRs). This demand of uranium can be supplied by the uranium recovered from seawater if the recovery cost is reasonable. In conclusion, the utilization of uranium from seawater will be able to play an essential role of providing enough time to develop safe and economical FBRs.

JAEA Reports

Present status of research on hydrogen energy and perspective of HTGR hydrogen production system

Miyamoto, Yoshiaki; Ogawa, Masuro; Akino, Norio; Shiina, Yasuaki; Inagaki, Yoshiyuki; Shimizu, Saburo; Onuki, Kaoru; Ishiyama, Shintaro; Katanishi, Shoji; Takeda, Tetsuaki; et al.

JAERI-Review 2001-006, 147 Pages, 2001/03

JAERI-Review-2001-006.pdf:9.2MB

no abstracts in English

JAEA Reports

Calculation Models for Optimal Replacement Interval of Computer Systems

;

JAERI-M 9605, 47 Pages, 1981/08

JAERI-M-9605.pdf:1.15MB

no abstracts in English

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