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Saito, Shigeru; Yamaguchi, Kazushi*; Yoshimoto, Hidemitsu*; Obayashi, Hironari; Sasa, Toshinobu
JAEA-Technology 2022-032, 51 Pages, 2023/03
JAEA-Technology-2022-032.pdf:4.51MB
In the Accelerator Driven System (ADS) being studied by the Japan Atomic Energy Agency (JAEA) for transmutation of long-lived radioactive waste, lead-bismuth eutectic alloy (LBE) is used as a spallation target and subcritical core coolant. A proton irradiation facility in J-PARC is considered to prepare a material irradiation database for ADS development. The proton irradiation facility is equipped with an LBE loop, which enables material irradiation tests in spallation environment under flowing LBE condition. The slow leakage of LBE is one of critical issue to use LBE safety. The slow leakage is caused by the biting slag and/or other materials at valve seal of drain valve. To solve this problem, JAEA examined the application of freeze-seal valve (FSV), which seal the piping by freezing LBE in specific position. Water-cooled and air-cooled freeze-seal valve test modules were fabricated, installed in the test section of the existing test stand for LBE technology development, and tested to confirm their operation and performance. As a result of the tests, it was confirmed that the water-cooled FSV test module worked well along to the design values. This report describes the outline and details of the test stand for LBE technology and each FSV test module, as well as the results of operation and performance verification tests.
Department of Fusion Engineering Research; Department of Materials Science
JAERI-Review 2005-012, 143 Pages, 2005/03
JAERI-Review-2005-012.pdf:11.74MB
no abstracts in English
Konishi, Satoshi*; Kimura, Akihiko*; Akiba, Masato; Nakamura, Hiroo; Nagasaka, Takuya*; Muroga, Takeo*; Hasegawa, Akira*; Matsui, Hideki*
Nihon Genshiryoku Gakkai-Shi, 46(5), p.311 - 322, 2004/05
no abstracts in English
Nakamura, Hiroo; Burgazzi, L.*; Cevolani, S.*; Dell'Ocro, G.*; Fazio, C.*; Giusti, D.*; Horiike, Hiroshi*; Ida, Mizuho*; Kakui, Hideo*; Loginov, N.*; et al.
Journal of Nuclear Materials, 307-311(2), p.1675 - 1679, 2002/12
no abstracts in English
Fusion Neutron Laboratory
JAERI-Tech 2000-052, 110 Pages, 2000/08
JAERI-Tech-2000-052.pdf:5.31MB
no abstracts in English
Shiozawa, Shusaku; Ogawa, Masuro; Inagaki, Yoshiyuki; Katanishi, Shoji; Takeda, Tetsuaki; Nishihara, Tetsuo; Shimizu, Saburo; Ohashi, Hirofumi; Miyamoto, Yoshiaki
Proceedings of 12th Pacific Basin Nuclear Conference (PBNC 2000) (CD-ROM), 10 Pages, 2000/01
no abstracts in English
Miyamoto, Yoshiaki
IES-26, p.118 - 127, 2000/00
no abstracts in English
Miyamoto, Yoshiaki; Shiozawa, Shusaku; Ogawa, Masuro; Hada, Kazuhiko
Proc. of the Int. Conf. on Future Nuclear Systems (GLOBAL'99)(CD-ROM), 7 Pages, 1999/00
no abstracts in English
Hasegawa, Kazuo; Mizumoto, Motoharu; Kusano, Joichi; Tomisawa, Tetsuo; Ouchi, Nobuo; Oguri, Hidetomo; Kinsho, Michikazu; Touchi, Y.*; Honda, Yoichiro*; Akaoka, Nobuo*; et al.
Proceedings of 23rd Linear Accelerator Meeting in Japan, p.19 - 21, 1998/00
no abstracts in English
Mizumoto, Motoharu; Kusano, Joichi; Hasegawa, Kazuo; Ouchi, Nobuo; Oguri, Hidetomo; Kinsho, Michikazu; Touchi, Y.*; Honda, Yoichiro*; Mukugi, Ken*; Ino, H.*; et al.
Proc. of Int. Conf. on Future Nuclear Systems (Global'97), 2, p.1402 - 1407, 1997/00
no abstracts in English
JAERI-M 94-066, 67 Pages, 1994/03
no abstracts in English
Mizumoto, Motoharu; ; *; *; Tanaka, Hideki*; Okumura, Yoshikazu; Kaneko, Yoshihiko
LA-12205-C, p.736 - 752, 1991/11
no abstracts in English
Mizumoto, Motoharu; ; *; *; Tanaka, Hideki*; Okumura, Yoshikazu; ; *; *; Kaneko, Yoshihiko
Proc. of the 16th LINEAR Accelerator Meeting in Japan, p.121 - 123, 1991/09
no abstracts in English
Yasue, Kenichi; Sasao, Eiji; Onoe, Hironori; Iwatsuki, Teruki; Kato, Tomoko; Takeuchi, Ryuji; Kokubu, Yoko; Asamori, Koichi; Umeda, Koji
no journal, ,
Geosphere stability project is being carried out by Japan Atomic Energy Agency in order to establish techniques for investigation, analysis and assessment of the long-term evolution of geological environments, taking into account long-term geological phenomena such as volcanism, faulting, uplift, denudation, climate change, and sea-level change. This project is being conducted under a contract with Agency of Natural Resources and Energy, part of Ministry of Economy, Trade and Industry of Japan as part of its R&D supporting program for developing technology of geological disposal of high-level radioactive waste. This project has the development of a numerical model "geological-evolutionary model" expressing a change of the geological environments and the development of "innovative elemental technique" that is elemental technology required for model construction.
Tokuyasu, Kayoko; Yasue, Kenichi; Komatsu, Tetsuya; Tamura, Itoko; Horiuchi, Yasuharu
no journal, ,
We have carried out the research and development of provenance analysis techniques to elucidate the mountain-building stage using quartz ESR signals in sediments. The R&D was conducted using the Tokai Formation including Toki Sand and Gravel Formation distributed over the Tono area. In the northern part of the area, bedrocks consist of sedimentary rocks, Nohi Rhyolite and Sanyo Granite, whereas consist of Ryoke Granites in the southern part. Samples of sediments were taken from the quarry located between the Tsukechi River and Atera fault. Basement rock samples were also taken in and around the quarry. Outcrop observation indicates that the provenance of sediments changed between the lower and upper parts. Quartz grains for ESR measurements were extracted from all samples. As a result, granitic rocks of Sanyo belt were not exposed to the drainage basin during the deposition of the lower part between 3.9 and 2.0 Ma, then the granitic rocks were exposed during the deposition of upper part after about 2.0 Ma. We conclude that it is possible to estimate the sediment provenance using ESR properties.
Tokuyasu, Kayoko; Yasue, Kenichi; Komatsu, Tetsuya; Tamura, Itoko; Horiuchi, Yasuharu
no journal, ,
We have carried out the research and development of provenance analysis techniques to elucidate the mountain-building stage using quartz ESR signals in sediments. The R&D was conducted using the Tokai Formation including Toki Sand and Gravel Formation distributed over the Tono area. In the northern part of the area, bedrocks consist of sedimentary rocks, Nohi Rhyolite and Sanyo Granite, whereas consist of Ryoke Granites in the southern part. Samples of sediments were taken from the quarry located between the Tsukechi River and Atera fault. Basement rock samples were also taken in and around the quarry. Outcrop observation indicates that the provenance of sediments changed between the lower and upper parts. Quartz grains for ESR measurements were extracted from all samples. As a result, granitic rocks of Sanyo belt were not exposed to the drainage basin during the deposition of the lower part between 3.9 and 2.0 Ma, then the granitic rocks were exposed during the deposition of upper part after about 2.0 Ma. We conclude that it is possible to estimate the sediment provenance using ESR properties.
