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Journal Articles

Managing beryllium in nuclear facility applications

Longhurst, G. R.*; Tsuchiya, Kunihiko; Dorn, C.*; Folkman, S. L.*; Fronk, T. H.*; Ishihara, Masahiro; Kawamura, Hiroshi; Tranter, T. N.*; Rohe, R.*; Uchida, Munenori*; et al.

Nuclear Technology, 176(3), p.430 - 441, 2011/12

 Times Cited Count:2 Percentile:20.43(Nuclear Science & Technology)

Beryllium has important roles in nuclear facilities such as fission reactors and fusion reactors. Its neutron multiplication capability and low atomic weight make it very useful as a reflector in fission reactors. In both applications, the beryllium and the impurities in it become activated by neutrons transmutating to radionuclides, some of which are long-lived and difficult to dispose of. Also, gas production, notably helium and tritium, results in swelling, embrittlement, and cracking, which means that the beryllium must be replaced periodically, especially in fission reactors where dimensional tolerances must be maintained. It has long been known that neutron activation of inherent iron and cobalt in the beryllium results in significant $$^{60}$$Co activity. In 2001, it was discovered that activation of naturally occurring contaminants in the beryllium creates sufficient $$^{14}$$C and $$^{94}$$Nb to render the irradiated beryllium "Greater-Than-Class-C" for disposal in US radioactive waste facilities. In this paper we review the extent of the disposal issue, processes that have been investigated or considered for improving the disposability of irradiated beryllium, and approaches for recycling.

JAEA Reports

Manufacturing of neutron reflector frame for JMTR

Hanawa, Yoshio; Tsuboi, Kazuaki; Uchida, Munenori*; Suzuki, Ken*; Takahashi, Kunihiro

JAEA-Technology 2009-078, 18 Pages, 2010/03

JAEA-Technology-2009-078.pdf:11.35MB

Beryllium has been used as the neutron reflector in the Japan Materials Testing Reactor (JMTR). A beryllium frame is arranged in the JMTR core and the frame consists of 3 sections (North, East and West). Each section has 7 stories of the beryllium blocks. Each block is connected by the aluminum joints. The capsule or the beryllium plug is located in the inside of the beryllium frame. The first criticality achieved in 1968 and the frame has been replaced 6 times and now the 7th frame is being manufactured. The replacement is planned to be done in the spring of 2010. The design has been modified to decrease the swelling camber and the lifetime has been improved. The manufacturing procedure is severely controlled to assure the quality. The chemical composition must be specified to minimize the swelling and radiation. The machining procedure is highly controlled because beryllium is very brittle. And the environmental control is also important, because the beryllium is a toxic material.

Journal Articles

Development of advanced tritium breeders and neutron multipliers for DEMO solid breeder blankets

Tsuchiya, Kunihiko; Hoshino, Tsuyoshi; Kawamura, Hiroshi; Mishima, Yoshinao*; Yoshida, Naoaki*; Terai, Takayuki*; Tanaka, Satoru*; Munakata, Kenzo*; Kato, Shigeru*; Uchida, Munenori*; et al.

Nuclear Fusion, 47(9), p.1300 - 1306, 2007/09

 Times Cited Count:18 Percentile:57.13(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Recent results on beryllium and beryllides in Japan

Mishima, Yoshinao*; Yoshida, Naoaki*; Kawamura, Hiroshi; Ishida, Kiyohito*; Hatano, Yuji*; Shibayama, Tamaki*; Munakata, Kenzo*; Sato, Yoshiyuki*; Uchida, Munenori*; Tsuchiya, Kunihiko; et al.

Journal of Nuclear Materials, 367-370(2), p.1382 - 1386, 2007/08

 Times Cited Count:23 Percentile:83.86(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Development of advanced tritium breeders and neutron multipliers for DEMO solid breeder blankets

Tsuchiya, Kunihiko; Hoshino, Tsuyoshi; Kawamura, Hiroshi; Mishima, Yoshinao*; Yoshida, Naoaki*; Terai, Takayuki*; Tanaka, Satoru*; Munakata, Kenzo*; Kato, Shigeru*; Uchida, Munenori*; et al.

Proceedings of 21st IAEA Fusion Energy Conference (FEC 2006) (CD-ROM), 8 Pages, 2007/03

no abstracts in English

Journal Articles

Development of beryllides as advanced neutron multipliers for fusion blankets

Tsuchiya, Kunihiko; Kawamura, Hiroshi; Mishima, Yoshinao*; Yoshida, Naoaki*; Tanaka, Satoru*; Uchida, Munenori*; Ishida, Kiyohito*; Shibayama, Tamaki*; Munakata, Kenzo*; Sato, Yoshiyuki*; et al.

Purazuma, Kaku Yugo Gakkai-Shi, 83(3), p.207 - 214, 2007/03

no abstracts in English

Journal Articles

General properties on compatibility between Be-Ti alloy and SS 316LN

Tsuchiya, Kunihiko; Uchida, Munenori*; Kawamura, Hiroshi

Fusion Engineering and Design, 81(8-14), p.1057 - 1063, 2006/02

 Times Cited Count:7 Percentile:48.03(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Status of beryllium R&D in Japan

Kawamura, Hiroshi; Tsuchiya, Kunihiko; Mishima, Yoshinao*; Yoshida, Naoaki*; Munakata, Kenzo*; Ishida, Kiyohito*; Hatano, Yuji*; Shibayama, Tamaki*; Sato, Yoshiyuki*; Uchida, Munenori*; et al.

INL/EXT-06-01222, p.1 - 7, 2006/02

no abstracts in English

Journal Articles

Beryllium intermetallic compounds

Mishima, Yoshinao*; Yoshida, Naoaki*; Kawamura, Hiroshi; Tsuchiya, Kunihiko; Iwadachi, Takaharu*; Uchida, Munenori*

Kogyo Zairyo, 54(1), p.46 - 47, 2006/01

no abstracts in English

Journal Articles

The HFR Petten high dose irradiation programme of beryllium for blanket application

Hegeman, J. B. J.*; Van der Laan, J. G.*; Kawamura, Hiroshi; M$"o$slang, A.*; Kupriyanov, I.*; Uchida, Munenori*; Hayashi, Kimio

Fusion Engineering and Design, 75-79, p.769 - 773, 2005/11

 Times Cited Count:23 Percentile:83.1(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Present status of beryllide R&D as neutron multiplier

Kawamura, Hiroshi; Takahashi, Heishichiro*; Yoshida, Naoaki*; Mishima, Yoshinao*; Ishida, Kiyohito*; Iwadachi, Takaharu*; Cardella, A.*; Van der Laan, J. G.*; Uchida, Munenori*; Munakata, Kenzo*; et al.

Journal of Nuclear Materials, 329-333(1), p.112 - 118, 2004/08

 Times Cited Count:29 Percentile:86.95(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Stability of titanium beryllide under water vapor

Munakata, Kenzo*; Kawamura, Hiroshi; Uchida, Munenori*

Journal of Nuclear Materials, 329-333(Part2), p.1357 - 1360, 2004/08

 Times Cited Count:10 Percentile:58.07(Materials Science, Multidisciplinary)

no abstracts in English

JAEA Reports

An Investigation of post-irradiation examination facility for fusion blanket materials

Yamada, Hirokazu*; Kawamura, Hiroshi; Tsuchiya, Kunihiko; Ishitsuka, Etsuo; Uchida, Munenori*; Akutsu, Yoichi; Motoki, Ryozo; Watanabe, Wataru; Hirata, Shogo*

JAERI-Tech 2004-036, 138 Pages, 2004/03

JAERI-Tech-2004-036.pdf:4.07MB

This document shows the model case concerned with the utilization of constructed facility for the construction of post irradiation examination facility for fusion blanket. In this report, the radioisotope application and development laboratory is considered as constructed facility for post irradiation examination facility and we planned to improve the radioisotope application and development laboratory to the facility of post irradiation examination for fusion material to reduce the construction fee for this facility and promotion of efficiency by concentration of any equipment for fusion material research.

Journal Articles

Preliminary survey for recycle of beryllium reflector frames used in the JMTR

Ishitsuka, Etsuo; Nakamichi, Masaru*; Uchida, Munenori*; Kawamura, Hiroshi; Kaminaga, Katsuo; Tsuboi, Kazuaki; Kusunoki, Hidehiko

JAERI-Conf 2004-006, p.262 - 264, 2004/03

no abstracts in English

Journal Articles

Study on reactivity of titanium beryllide with water vapor

Munakata, Kenzo*; Kawamura, Hiroshi; Uchida, Munenori*

JAERI-Conf 2004-006, p.210 - 215, 2004/03

no abstracts in English

Journal Articles

Thermal cycling tests of 1st wall mock-ups with Beryllium/CuCrZr bonding

Uda, Minoru*; Iwadachi, Takaharu*; Uchida, Munenori*; Yamada, Hirokazu*; Nakamichi, Masaru*; Kawamura, Hiroshi

JAERI-Conf 2004-006, p.60 - 65, 2004/03

no abstracts in English

Journal Articles

Microstructure and mechanical properties of Be$$_{12}$$Ti/(Be) and Be$$_{12}$$V/(Be) two-phase alloys

Mishima, Yoshinao*; Yamamoto, Keisuke*; Kimura, Yoshisato*; Uchida, Munenori*; Kawamura, Hiroshi

JAERI-Conf 2004-006, p.184 - 189, 2004/03

no abstracts in English

Journal Articles

Phase equilibria in the Be-V and Be-Ti binary systems

Onuma, Ikuo*; Kainuma, Ryosuke*; Uda, Minoru*; Iwadachi, Takaharu*; Uchida, Munenori*; Kawamura, Hiroshi; Ishida, Kiyohito*

JAERI-Conf 2004-006, p.172 - 183, 2004/03

no abstracts in English

Journal Articles

Trial fabrication of Be$$_{12}$$Ti electrode for pebble production by rotating electrode method

Uda, Minoru*; Iwadachi, Takaharu*; Uchida, Munenori*; Nakamichi, Masaru*; Kawamura, Hiroshi

JAERI-Conf 2004-006, p.190 - 195, 2004/03

no abstracts in English

Journal Articles

Development of innovative light refractory materials using beryllide for gas turbine

Iwadachi, Takaharu*; Uchida, Munenori*; Mishima, Yoshinao*; Fujita, Akitsugu*; Kawamura, Hiroshi; Shestakov, V.*; Miyakawa, Masaru*

JAERI-Conf 2004-006, p.196 - 202, 2004/03

no abstracts in English

37 (Records 1-20 displayed on this page)