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Journal Articles

Current status of JRR-3

Kinase, Masami; Arai, Masaji; Maruo, Takeshi

Proceedings of Joint IGORR 2013 & IAEA Technical Meeting (Internet), 12 Pages, 2013/10

JRR-3 at the Tokai-Shirakata site of JAEA was in its regular maintenance period, when the Great East Japan Earthquake took place on 11th March 2011. The reactor building with the solid foundations and the equipment important to safety survived the earthquake without serious damage, and no radioactive leakage has been occurred. Recovery works, check and test to confirm the integrity of all components and structures, and seismic assessment necessary for proving that the seismic loads which worked on a structure or component by the earthquake accommodated within its allowable stress have been carried out. After our recovery works and verification of the integrity of JRR-3, we confirmed that the integrity is ensured, and then reported the fact to the regulatory body. As another topic, the regulatory body will introduce new regulatory requirements for research reactors. Now, JRR-3 considers applying the new requirements for restart. This paper presents the current status of JRR-3 including the recovery works, seismic assessment and new regulatory requirements.

Journal Articles

Experience on return of research reactor spent fuels in Japan

Sagawa, Hisashi; Koda, Nobuyuki; Hanawa, Nobuhiro; Maruo, Takeshi; Miyazawa, Masataka; Unesaki, Hironobu*; Nakagome, Yoshihiro*

IAEA-TECDOC-1593, p.121 - 128, 2008/06

In Japan, 1,712 of Research Reactor Spent Nuclear fuels (RRSNFs) have been transported to the US successfully since the receipt in accordance with the foreign research reactor spent nuclear fuel acceptance policy started in 1996. Especially, Japan Atomic Energy Agency (JAEA) carried out shipment to the US of eight times and of 1,283 fuel elements in total. This paper describes experiences of RRSNF transportation to the US in Japan.

Journal Articles

Approach for safety assurance and structural integrity of ITER

Tada, Eisuke; Hada, Kazuhiko; Maruo, Takeshi; Safety Design/Evaluation Group

Purazuma, Kaku Yugo Gakkai-Shi, 78(11), p.1145 - 1156, 2002/11

no abstracts in English

Journal Articles

Safety design concepts for ITER-tritium facility; Toward construction in Japan

Ohira, Shigeru; Tada, Eisuke; Hada, Kazuhiko; Neyatani, Yuzuru; Maruo, Takeshi; Hashimoto, Masayoshi*; Araki, Takao*; Nomoto, Kazuhiro*; Tsuru, Daigo; Ishida, Toshikatsu*; et al.

Fusion Science and Technology, 41(3), p.642 - 646, 2002/05

no abstracts in English

Journal Articles

The Summary report on engineering design activities in the International Thermonuclear Experimental Reactor (ITER) project

Mori, Masahiro; Shoji, Teruaki; Araki, Masanori; Saito, Keiji*; Senda, Ikuo; Omori, Junji*; Sato, Shinichi*; Inoue, Takashi; Ono, Isamu*; Kataoka, Takahiro*; et al.

Nihon Genshiryoku Gakkai-Shi, 44(1), p.16 - 89, 2002/01

no abstracts in English

Journal Articles

Study on decay heat removal of compact ITER

Tsuru, Daigo; Neyatani, Yuzuru; Araki, Takao*; Nomoto, Kazuhiro*; Ohira, Shigeru; Maruo, Takeshi; Hashimoto, Masayoshi*; Hada, Kazuhiko; Tada, Eisuke

Fusion Engineering and Design, 58-59, p.985 - 989, 2001/11

 Times Cited Count:3 Percentile:28.03(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Safety activities in JAERI related to ITER

Ohira, Shigeru; Tada, Eisuke; Hada, Kazuhiko; Neyatani, Yuzuru; Maruo, Takeshi; Hashimoto, Masayoshi*; Araki, Takao*; Nomoto, Kazuhiro*; Tsuru, Daigo; Ishida, Toshikatsu*; et al.

Fusion Engineering and Design, 54(3-4), p.515 - 522, 2001/04

 Times Cited Count:3 Percentile:28.03(Nuclear Science & Technology)

no abstracts in English

Oral presentation

Study of the radiolysis for ITER cooling water at 14MeV neutron

Sato, Kazuyoshi; Neyatani, Yuzuru; Maruo, Takeshi; Mukai, Satoru*; Uchida, Shoji*; Soman, Yoshindo*

no journal, , 

no abstracts in English

Oral presentation

Divergence of cold neutron beam by applying neutron supermirrors at JRR-3

Tamura, Itaru; Yamamoto, Kazuyoshi; Nakamura, Kiyoshi; Soyama, Kazuhiko; Maruo, Takeshi

no journal, , 

no abstracts in English

Oral presentation

Upgrading of JRR-3/JRR-4 neutron beam utilities; For cold neutron beam and BNCT

Yamamoto, Kazuyoshi; Tamura, Itaru; Kumada, Hiroaki; Maruo, Takeshi

no journal, , 

To response to their requests, we proposed two plans. One is the enhancement of cold neutron beam intensity for JRR-3 and the other one is the progress of Boron Neutron Capture Therapy (BNCT) for JRR-4. Improvements of the liquid hydrogen moderator and the neutron guide tubes are more effective and efficient to increase cold neutron beam intensity at JRR-3. It was recently evaluated that a neutron intensity on the new moderator increases twice the current intensity by fitting selection of material and shape for the new moderator vessel. It was also evaluated that the neutron transportation efficiency at the end of curved guide tube could be improved 5 times with 3Qc super-mirrors. Although BNCT in JRR-4 has been mainly applied to therapy against brain tumor so far, technical developments to expand its application to therapy against the other cancers such as lung cancer, head and neck cancer are carried out as the needs are increasing these days.

Oral presentation

Current status and future view of the technical development for BNCT in JRR-4

Kumada, Hiroaki; Yamamoto, Kazuyoshi; Maruo, Takeshi

no journal, , 

no abstracts in English

Oral presentation

Promotion and development of industrial applications at JRR-3

Kakurai, Kazuhisa; Maruo, Takeshi

no journal, , 

Oral presentation

Current status of JRR-3; After 3.11 Earthquake in Japan

Murayama, Yoji; Arai, Masaji; Maruo, Takeshi

no journal, , 

JRR-3 at Tokai site of JAEA was in its regular maintenance period, when the Great East Japan Earthquake was taken place on 11th March 2011. The reactor building with their solid foundations and the equipment important to safety survived the earthquake without serious damage and no radioactive leakage has been occurred. Recovery work is planned to be completed by the end of this March. At the same time, check and test of the integrity of all components and seismic assessment to show resistance with the 311 earthquake have been carried out. JRR-3 will restart its operation after completing above mentioned procedures.

Oral presentation

Present and future of JMTR, JRR-3, 4 utilization

Kaminaga, Masanori; Maruo, Takeshi

no journal, , 

Japan materials testing reactor (JMTR), Research reactors JRR-3, and JRR-4 have been utilized for research and development, such as irradiation experiments for fuel/materials for Light Water Reactors (LWRs), neutron beam experiments, activation analysis, medical irradiation (BNCT), etc. In this presentation, utilization status and future utilization of each reactor will be presented.

Oral presentation

Current status of JRR-3

Kashima, Yoichi; Arai, Masaji; Maruo, Takeshi

no journal, , 

15 (Records 1-15 displayed on this page)
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