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Hidaka, Akihide
Proceedings of 2021 International Congress on Advances in Nuclear Power Plants (ICAPP 2021) (USB Flash Drive), 10 Pages, 2021/10
Author recently proposed that the Type A glassy Cesium-bearing microparticles that were released during the Fukushima accident may have been formed by melting and atomization of glass fibers of the High Efficiency Particulate Air (HEPA) filter in the Stand-by Gas Treatment System (SGTS) line in Unit 3 during the hydrogen explosion. In the present study, the components of the Type A and glass fibers of HEPA filter were examined using EPMA. The results showed that the components of the Type A were almost the same as that of the glass fibers except for Cs, Fe, Sn, which are considered to have been contained in the in-vessel-derived particles. When the glass fiber was irradiated with the electron beam of the Electron Probe Micro Analyzer (EPMA) under vacuum condition, spherical particles of a few micro m size were formed that looked very similar to the Type A. These strongly suggest that the HEPA filter is Si source of the Type A.
CFukuyama, Hiroyuki*; Higashi, Hideo*; Yamano, Hidemasa
Nuclear Technology, 205(9), p.1154 - 1163, 2019/09
Times Cited Count：33 Percentile：97.65(Nuclear Science & Technology)An electromagnetic-levitation technique performed in a static magnetic field was used to measure the density, surface tension, normal spectral emissivity, heat capacity, and thermal conductivity of molten 316L stainless steel (SS316L) and SS316L that contained 5mass%BC. The addition of 5mass%BC to SS316L yielded reductions of 111 K, 6%, 19%, and 6% in the liquidus temperature, density, normal spectral emissivity, and thermal conductivity at the liquidus temperature of SS316L, respectively. The heat capacity increased by 5% with this addition. Although the 5mass%BC addition had no clear effect on the surface tension, sulfur dissolved in the SS316L resulted in a significant decrease in the surface tension.
Maruyama, Toshiki; Tatsumi, Toshitaka*; Voskresensky, D. N.*; Tanigawa, Tomonori*; Endo, Tomoki*; Chiba, Satoshi
Proceedings of Science (Internet), 22, p.024_1 - 024_10, 2006/09
no abstracts in English
Kondo, Hiroo*; Fujisato, Atsushi*; Yamaoka, Nobuo*; Inoue, Shoji*; Miyamoto, Seiji*; Iida, Toshiyuki*; Nakamura, Hiroo; Ida, Mizuho*; Matsushita, Izuru*; Muroga, Takeo*; et al.
Fusion Engineering and Design, 75-79, p.865 - 869, 2005/11
Times Cited Count：21 Percentile：79.04(Nuclear Science & Technology)no abstracts in English
Koshizuka, Seiichi*; *; Okano, Yasushi; *; Yamaguchi, Akira
JNC TY9400 2000-012, 91 Pages, 2000/03
JNC-TY9400-2000-012.pdf:2.82MB
no abstracts in English
Ebihara, Kenishi; Watanabe, Tadashi
Dai-12-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Rombunshu, p.239 - 240, 1998/12
no abstracts in English
Ebihara, Kenishi; Watanabe, Tadashi; Kaburaki, Hideo
Int. J.Modern Phys. C, 9(8), p.1417 - 1427, 1998/00
Times Cited Count：2 Percentile：20.33(Computer Science, Interdisciplinary Applications)no abstracts in English
*; *; *
Journal of the Physical Society of Japan, 66(9), p.2665 - 2674, 1997/09
Times Cited Count：2 Percentile：30.23(Physics, Multidisciplinary)no abstracts in English
*; *; *
Journal of the Physical Society of Japan, 66(9), p.2675 - 2681, 1997/09
Times Cited Count：2 Percentile：30.23(Physics, Multidisciplinary)no abstracts in English
Riden Janaru, p.0 - 0, 1962/10
no abstracts in English
Higashi, Hideo*; Fukuyama, Hiroyuki*; Nishi, Tsuyoshi*; Yamano, Hidemasa
no journal, ,
Thermophysical properties of control rod and cladding materials are necessary to simulate the mechanism of degradation which may occur at the early stage of severe accident. In this study, surface tension of SUS316 as the cladding material was measured in molten state.
CHigashi, Hideo*; Fukuyama, Hiroyuki*; Yamano, Hidemasa
no journal, ,
Thermophysical properties of control rod and cladding materials are necessary to simulate the mechanism of degradation which may occur at the early stage of severe accident. In this study, density and surface tension of melt which was a mixture of SUS316 as the cladding material and 10 mass-% BC as as the control rod material were measured using an electromagnetic levitation facility.
C-SS eutectic molten materialsFukuyama, Hiroyuki*; Higashi, Hideo*; Yamano, Hidemasa
no journal, ,
To develop thermophysical property model to simulate eutectic reaction behavior of BC as control rod material and stainless steel: SUS316L (SS) in core disruptive accident of sodium-cooled fast reactor, thermophysical property measurement of BC-SS melt has been systematically conducted with very high temperature physical property measurement system (PROSPECT). This fiscal year's paper reports measurement results of density and surface tension of 10mass%BC-SS melt.
