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JAEA Reports

Evaluation on activation activity of reactor in JRR-2 applied 3 dimensional model to neutron flux calculation

Kishimoto, Katsumi; Arigane, Kenji*

JAERI-Tech 2005-016, 83 Pages, 2005/03

JAERI-Tech-2005-016.pdf:10.52MB

Revaluation to activation activity of reactor evaluated at the notification of dismantling submitted in 1997 was carried out in JRR-2 where decommissioning was advanced now. In the revaluation, estimation accuracy on neutron streaming at various horizontal experimental tubes was improved by applying 3 dimensional model to neutron transport calculation that had been carried out by 2 dimensional model, and calculating with TORT. As the result, excessive overestimations on horizontal experimental tubes and biological shield that had greatly contributed to total activation activity in evaluation at the notification of dismantling was revised, sum of their activation activities in the revaluation decreased to 1/18(case after 1 year from the permanent shutdown of reactor) of evaluation at the notification of dismantling, and the structural materials that had large activation activity were changed. By the above, it was shown that introducing 3 dimensional model was effective in evaluation on activation activity of the research reactor that had a lot of various experimental tubes.

JAEA Reports

JRR-2 decommissioning activity, 1

Nakano, Masahiro; Arigane, Kenji; Okawa, Hiroshi; Suzuki, Takeshi; Kishimoto, Katsumi; Terunuma, Akihiro; Yano, Masaaki; Sakuraba, Naotoshi; Oba, Nagamitsu

JAERI-Tech 2003-072, 92 Pages, 2003/08

JAERI-Tech-2003-072.pdf:6.99MB

The decommissioning plan of the Japan Research reactor No2(JRR-2), decommissioning activities until the first half of phase-3, radioactive wastes and exposure dose of workers are described in this report. Since the first criticality in October 1960, JRR-2 had been operated about 36 years for various experiments. However, JRR-2 was permanent shutdown in December 1996 based on JAERI's long term plan, and the decommissioning of the JRR-2 was started in August 1997. Decommissioning of the JRR-2 was planed for 11 years from 1997 to 2007 and the program was divided into 4 phases. The decommissioning activities of the phase-1, phase-2 and the first half of phase-3 had already completed as planned in March 1998, February 2000, March 2002, respectively. The decommissioning activities of the later half of Phase-3 (dismantling of the reactor cooling systems) are carrying out at present time with planed 2002 and 2003 fiscal years.

Journal Articles

Shielding analysis and evaluation of JRR-2 decommissioning

Iwashita, Mitsushige*; Arigane, Kenji; Kishimoto, Katsumi; Seiki, Y.*; Fukumura, Nobuo*; Mio, K.*

Journal of Nuclear Science and Technology, 37(Suppl.1), p.372 - 378, 2000/03

no abstracts in English

Journal Articles

Evaluation on the radioactive inventories for the research reactor decommissioning

Arigane, Kenji

Dai-14-Kai Rikkyo Daigaku Gensiryoku Kenkyujo Koenkai Rombunshu (IAERU-9904), p.19 - 29, 2000/00

no abstracts in English

Journal Articles

Decommissioning program of JRR-2

Kishimoto, Katsumi; Bamba, Masao; Arigane, Kenji

JAERI-Conf 99-006, p.96 - 101, 1999/08

no abstracts in English

Journal Articles

Decommissioning program of JRR-2

Kishimoto, Katsumi; Bamba, Masao; Arigane, Kenji

Proc. of 1999 Workshop on the Utilization of Research Reactors, p.96 - 101, 1999/00

no abstracts in English

Journal Articles

Decommissioning of the JRR-2

Kaieda, Keisuke; ; Arigane, Kenji

Genshiryoku Nenkan '98/'99-Nen Ban, P. 216, 1998/12

no abstracts in English

Journal Articles

Radiation resistivity of new super engineering plastic,BEK; Development of capsule for reactor irradiation

Seguchi, Tadao; ; Arigane, Kenji

S+N (seeds and needs), 0, p.6 - 13, 1994/09

no abstracts in English

JAEA Reports

Development of irradiation capsule for nuclear research reactor using aromatic polyether (BEK)

Arigane, Kenji; ; Sasajima, Fumio; Takahashi, Hidetake; Seguchi, Tadao; *

JAERI-Tech 94-004, 33 Pages, 1994/07

JAERI-Tech-94-004.pdf:1.37MB

no abstracts in English

Journal Articles

Design experience of the JRR-2 BNCT facility in JAERI

Arigane, Kenji; Takahashi, Hidetake

KURRI-TR-392, 0, p.25 - 33, 1994/06

no abstracts in English

Journal Articles

Radiation resistant aromatic poly ether (BEK) and the application for irradiation capsules in a research reactor

*; Arigane, Kenji; ; Takahashi, Hidetake; Seguchi, Tadao

39th Int. SAMPE Symp. and Exhibition,Vol. 39 (Book 2), 0, p.2231 - 2243, 1994/00

no abstracts in English

Journal Articles

Development of irradiation capsules using polymers

Arigane, Kenji; *; ; Seguchi, Tadao; Takahashi, Hidetake

Proc. of 4th Asian Symp. on Research Reactors, 10 Pages, 1993/00

no abstracts in English

JAEA Reports

Development of plastic capsule for research reactor irradiation

Arigane, Kenji; ; ; Aoyama, Isao; Seguchi, Tadao; Takahashi, Hidetake

JAERI-M 92-078, 22 Pages, 1992/06

JAERI-M-92-078.pdf:0.75MB

no abstracts in English

JAEA Reports

Installation of JRR-2 neutron medical irradiation facility

Arigane, Kenji; Yamada, Tadanori; ; ;

JAERI-M 91-139, 60 Pages, 1991/09

JAERI-M-91-139.pdf:1.69MB

no abstracts in English

Journal Articles

Highmolecule material as irradiation capsule for research reactor

Arigane, Kenji

Oyo Hoshasen Kagaku Shimpojiumu; Hoshasen Kankyo To Kobunshi Zairyo Koen Yoshishu, p.25 - 28, 1991/01

no abstracts in English

JAEA Reports

Neutronic and thermo-hydraulic design of LEU core for Japan Research Reactor 4

Arigane, Kenji; Watanabe, Shukichi; Tsuruta, Harumichi

JAERI-M 88-078, 21 Pages, 1988/04

JAERI-M-88-078.pdf:0.67MB

no abstracts in English

Journal Articles

Neutronic and thermo-hydralic design of JRR-4 LEU core

Arigane, Kenji; Watanabe, Shukichi; Tsuruta, Harumichi

Japan-China Symp. on Research and Test Reactors, 17 Pages, 1988/00

no abstracts in English

JAEA Reports

JAEA Reports

Journal Articles

An Approximate simple formula for the shielding effect of the cadmium jacket designed for the use of fast neutrons among reactor neutrons

;

Journal of Radioanalytical Chemistry, 36, p.239 - 245, 1977/00

no abstracts in English

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