Trends of fast reactor cycle technology development in the world, 2; Current status and prospects of sodium-cooled fast reactor cycle technology development in each country

Mishima, Kaichiro*; Saito, Masaki*; Nagata, Takashi*

Nihon Genshiryoku Gakkai-Shi ATOMO, 52(9), p.536 - 552, 2010/09

The 1st of this series that was entitled, "Accelerating Fast Reactor Development: Start of Operation of Commercial Reactors in 2020" introduced mainly the activated development plan and in the major countries. This article introduces the development of the sodium-cooled fast reactor and related fuel cycle that each country is devoting one's energies to development, maily following the presentation in International Conference (FR09) held by organized by IAEA in December 2009, including the situation before and behind the conference. Especially, the development in Russia, India, China, USA, Republic of Korea, France and Japan.

Methodology of local instantaneous interfacial velocity measurement in multi-dimensional two-phase flow

Shen, X.*; Mishima, Kaichiro*; Nakamura, Hideo

Proceedings of 14th International Conference on Nuclear Engineering (ICONE-14) (CD-ROM), 8 Pages, 2006/07

Since the transport of momentum, heat and mass tightly links with local interfacial characteristics it is essential to know the local interfacial parameters in various two-phase flows. The interfacial velocity plays a determinant role in determining the other interfacial parameters such as the interfacial area concentration and so on. It is accordingly one of the most important parameters in analyzing two-phase flow. However, it also is one of the most difficult parameters to measure up to now. Based on the application of the interfacial measurement theorem to several four-sensor probes, the present study established a theoretical foundation of the measurement method for the local instantaneous interfacial velocity in multi-dimensional two-phase flow by using three independent four-sensor probes. Since we can find three independent four-sensor probes in a multi-sensor probe, which has more than four sensors, by sharing the sensors of the first four-sensor probe with the sensors of the others, a five- or six-sensor probe including at least one set of three four-sensor combinations was recommended to measure the local instantaneous interfacial velocity, interfacial area concentration and so on in multi-dimensional two-phase flow. A six-sensor probe was developed and employed in the practical measurement in an air-water multi-dimensional two-phase flow in a pool. The six-sensor probe measurements were checked against the gas flow rate measurement using a rotameter and a manometer. The comparing results were very satisfactory.

Development of a fast neutron radiography converter using wavelength-shifting fibers

Matsubayashi, Masahito; Hibiki, Takashi*; Mishima, Kaichiro*; Yoshii, Koji*; Okamoto, Koji*

Nuclear Instruments and Methods in Physics Research A, 510(3), p.325 - 333, 2003/09

https://doi.org/10.1016/S0168-9002(03)01810-2

A fluorescent converter for fast neutron radiography (FNR) comprising a scintillator and hydrogen-rich resin has been developed and applied to electronic imaging. The rate of the reaction between fast neutrons and the converter is increased by thickening the converter, but its opaqueness attenuates emitted light photons before they reach its surface. To improve the luminosity of a fluorescent converter for FNR, a novel type of converter was designed in which wavelength-shifting fibers were adopted to transport radiated light to the observation end face. The performance of the converter was compared with that of a polypropylene-based fluorescent converter in an experiment conducted at the fast-neutron-source reactor YAYOI in the University of Tokyo.

Study on point of net vapor generation by neutron radiography in subcooled boiling flow along narrow rectangular channels with short heated length

Kureta, Masatoshi; Hibiki, Takashi*; Mishima, Kaichiro*; Akimoto, Hajime

International Journal of Heat and Mass Transfer, 46(7), p.1171 - 1181, 2003/03

https://doi.org/10.1016/S0017-9310(02)00398-8

no abstracts in English

Super safe fast reactor RAPID with full automatic operation; Application to lunar base and distributed electric power plant on earth

Kobe, Mitsuru*; Tsunoda, Hirokazu*; Mishima, Kaichiro*; Kawasaki, Akira*; Iwamura, Takamichi

Genshiryoku eye, 48(1), p.23 - 28, 2002/01

https://ci.nii.ac.jp/naid/40005192283

no abstracts in English

Measurement of boiling flow by high-frame-rate neutron radiography, 2; Point of net vapor generation of flow-boiling in rectangular channels with short heated length

Kureta, Masatoshi; Hibiki, Takashi*; Mishima, Kaichiro*; Akimoto, Hajime

Nihon Kikai Gakkai Rombunshu, B, 67(661), p.2295 - 2303, 2001/09

https://doi.org/10.1299/kikaib.67.2295

no abstracts in English

Fundamental study on interfacial area transport model, 1 (Contract research)

Mishima, Kaichiro*; Nakamura, Hideo

JAERI-Review 2001-012, 51 Pages, 2001/03

JAERI-Review-2001-012.pdf:2.26MB

no abstracts in English

Present status on the development of a high-frame-rate neutron radiography system in JRR-3M

Matsubayashi, Masahito; Hibiki, Takashi*; Mishima, Kaichiro*

Nondestructive Testing and Evaluation, 16(2-6), p.267 - 275, 2001/01

https://doi.org/10.1080/10589750108953082

no abstracts in English

Fundamental Research of Two-Phase Flows with High Liquid/Gas Density Ratios

Mishima, Kaichiro*; Hibiki, Takashi*; Saito, Yasushi*; Tobita, Yoshiharu; Konishi, Kensuke; Suzuki, Toru

JNC TY9400 2000-018, 72 Pages, 2000/07

JNC-TY9400-2000-018.pdf:3.92MB

no abstracts in English

Visualization and measurements of liquid phase velocity and void fraction of gas-liquid metal two-phase flow by using neutron radiography

Saito, Yasushi*; Hibiki, Takashi*; Mishima, Kaichiro*; Tobita, Y.*; Suzuki, Toru*; Matsubayashi, Masahito

Proceedings of 9th International Symposium on Flow Visualization, p.391_1 - 391_10, 2000/00

no abstracts in English