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Journal Articles

High temperature gas-cooled reactors

Takeda, Tetsuaki*; Inagaki, Yoshiyuki; Aihara, Jun; Aoki, Takeshi; Fujiwara, Yusuke; Fukaya, Yuji; Goto, Minoru; Ho, H. Q.; Iigaki, Kazuhiko; Imai, Yoshiyuki; et al.

High Temperature Gas-Cooled Reactors; JSME Series in Thermal and Nuclear Power Generation, Vol.5, 464 Pages, 2021/02

As a general overview of the research and development of a High Temperature Gas-cooled Reactor (HTGR) in JAEA, this book describes the achievements by the High Temperature Engineering Test Reactor (HTTR) on the designs, key component technologies such as fuel, reactor internals, high temperature components, etc., and operational experience such as rise-to-power tests, high temperature operation at 950$$^{circ}$$C, safety demonstration tests, etc. In addition, based on the knowledge of the HTTR, the development of designs and component technologies such as high performance fuel, helium gas turbine and hydrogen production by IS process for commercial HTGRs are described. These results are very useful for the future development of HTGRs. This book is published as one of a series of technical books on fossil fuel and nuclear energy systems by the Power Energy Systems Division of the Japan Society of Mechanical Engineers.

Journal Articles

Research and development on membrane IS process for hydrogen production using solar heat

Myagmarjav, O.; Iwatsuki, Jin; Tanaka, Nobuyuki; Noguchi, Hiroki; Kamiji, Yu; Ioka, Ikuo; Kubo, Shinji; Nomura, Mikihiro*; Yamaki, Tetsuya*; Sawada, Shinichi*; et al.

International Journal of Hydrogen Energy, 44(35), p.19141 - 19152, 2019/07

 Times Cited Count:12 Percentile:67.04(Chemistry, Physical)

JAEA Reports

Leakage rate test for reactor containment vessel of HTTR

Kondo, Masaaki; Sekita, Kenji; Emori, Koichi; Sakaba, Nariaki; Kimishima, Satoru; Kuroha, Misao; Noji, Kiyoshi; Aono, Tetsuya; Hayakawa, Masato

JAEA-Testing 2006-002, 55 Pages, 2006/07

JAEA-Testing-2006-002.pdf:6.36MB

The leakage rate test for the reactor containment vessel of HTTR is conducted in accordance with the absolute pressure method provided in Japan Electric Association Code(JEAC4203). Although leakage test of a reactor containment vessel is, in general, performed in condition of reactor coolant pressure boundary to be opened in order to simulate an accident, the peculiar test method to HTTR which use the helium gas as reactor coolant has been established, in which the pressure boundary is closed to avoid the release of fission products into the environment of the reactor containment vessel. The system for measuring and calculating the data for evaluating the leakage rate for containment vessel of HTTR was developed followed by any modifications. Recently, the system has been improved for more accurate and reliable one with any useful functions including real time monitoring any conditions related to the test. In addition, the configuration of containment vessel boundary for the test and the calibration method for the detectors for measuring temperature in containment vessel have been modified by reflecting the revision of the Code mentioned above. This report describes the method, system configuration, and procedures for the leakage rate test for reactor containment vessel of HTTR.

Oral presentation

Application of membrane systems to the IS process

Onuki, Kaoru; Kasahara, Seiji; Tanaka, Nobuyuki; Okuda, Hiroyuki; Yoshida, Mitsunori; Hodotsuka, Masatoshi; Iwatsuki, Jin; Imai, Yoshiyuki; Noguchi, Hiroki; Terada, Atsuhiko; et al.

no journal, , 

Development of efficient HI processing scheme is important for attaining high thermal efficiency of hydrogen production by IS process. We are studying an application of electro-electrodialysis to pre-concentrate the HIx solution before distillation, which is supplied from the Bunsen reaction section. So far, feasibility of the pre-concentration was experimentally verified and also, by flowsheet analysis, the importance was clarified of improving the performance of membrane and electrode catalyst.

Oral presentation

Transport process of particulate organic matter in the Japan Sea

Otosaka, Shigeyoshi; Amano, Hikaru; Tanaka, Takayuki; Togawa, Orihiko; Noriki, Shinichiro*; Kaba, Masato*; Minakawa, Masayuki*

no journal, , 

In order to understand biogeochemical cycles of particulate materials in the deep part of the Japan Sea, the authors assessed the processes and a time scale of transport of particulate materials by measurements of organic radiocarbon (C-14) in settling/suspended particles collected in three regions of the Japan Sea; the northwestern, northeastern and southeastern regions. Isotopic ratios of C-14 in settling particles collected at 1 km depth showed little differences between the sampling regions. In the southeastern region, isotopic ratios of C-14 of settling particles collected in the bottom layer (about 0.5 km above the bottom) were similar to those in 1 km depth. On the other hand, the ratios in bottom layer of the northern regions were smaller than those at the shallower layers significantly. These results in indicated that there are different origins of POC between the northern and southeastern regions of the Japan Sea.

Oral presentation

R&D status of heat utilization technologies for high-temperature gas-cooled reactor and solar energy

Myagmarjav, O.; Iwatsuki, Jin; Tanaka, Nobuyuki; Noguchi, Hiroki; Kamiji, Yu; Ioka, Ikuo; Nomura, Mikihiro*; Yamaki, Tetsuya*; Tsuru, Toshinori*; Machida, Masato*; et al.

no journal, , 

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