Search Results 1-20 of 106

  • O-25 Effect of additive concentration on sweating operation of pseudo-biodiesel fuel  [in Japanese]

    WATANABE Youta , KOMATSU Hiroyuki , YAMAGIWA Kazuaki , TAJIMA Hideo

    … <p>Biodiesel fuel (BDF), which is mainly composed of fatty acid methyl ester (FAME), is a biomass fuel as an alternative to light oil. … Separation of saturated FAME, which is a high melting point component, can improve low temperature flow characteristics and increase the use as a liquid fuel dramatically. … after solidifying all of the BDF samples, the melted liquid is separated from residue solid by melting operation at a constant temperature. …

    Proceedings of the Conference on Biomass Science 16(0), 53-54, 2021

    J-STAGE 

  • Carburizing process and quantitative measurement in the casting process using Biocoke  [in Japanese]

    SHIMADA Kandai , TOMITA Yoshihiro , IDA Tamio

    … In the casting field, soaring of fossil fuel cost and destruction of the global environment have become serious issues. … We must be replacing coal coke and carburization material with solid bio-fuel that be able to realize environmental protection while accommodating economic growth. … This study has purpose for quantitative measurement of the carbon effect in casting process by solid bio-fuel; …

    The Proceedings of the Symposium on Environmental Engineering 2020.30(0), 202, 2020

    J-STAGE 

  • Interaction of Liquid CsIO<sub>3</sub> with a Polycrystalline UO<sub>2</sub> Solid Surface  [in Japanese]

    ISHII Hiroto , OHISHI Yuji , MUTA Hiroaki , UNO Masayoshi , KUROSAKI Ken

    … Understanding the behavior of melted volatile fission products (FPs) on the fuel contributes to the precise assessment of the release behaviour during a severe nuclear accident. … When the CsI had melted on the polycrystalline UO<sub>2</sub> …

    Transactions of the Atomic Energy Society of Japan 19(3), 147-151, 2020

    IR  J-STAGE 

  • 3-11 Characterization of Erianthus char gasification ash.  [in Japanese]

    KUROSAWA Kakeru , SATO Michio , KOIDO Kenji

    … <p>Woody biomass fuel demand for domestic power and heat production has been increasing. … Through the melting experiment at 1250°C, Erianthus ash melted and had a different crystal structure of SiO<sub>2</sub>, decreasing the amount of K in molten ash.</p> …

    Proceedings of the Annual Conference of The Japan Institute of Energy 29(0), 60-61, 2020

    J-STAGE 

  • Proposal for Solid Fuel Conversion of Waste Pulper Kiln  [in Japanese]

    Oguma Yasuo

    <p>古紙を原料とした製紙会社の工場では副産物としてパルパー粕等の廃プラスティックが排出されている。</p><p>これらは構内で焼却処理か産業廃棄物として外部処理されている。焼却処理をするにしても高含水率である為,助燃が必要で投入時の含水率を下げることが不可欠であったが,従来の脱水機は構造上強固なものはなく異物の混入等で故障が多発していた。</p>& …

    JAPAN TAPPI JOURNAL 74(1), 41-43, 2020

    J-STAGE 

  • Computer Simulation of Melting of Solidified Palm Oil by Hot Liquid in Horizontal Cylindrical Container  [in Japanese]

    岸本 健 , 浜野 雅夫 , 石田 隆

    … The melted palmoil packed into a ISO tank container at Southeast Asia get freezing during 6400 km long distance transportation to Japan, and it must make the need to melt by heating in place to use. … It is important to estimate the time required for melting as accurately as possible to design the process for fuel palm oil. …

    国士舘大学理工学部紀要 = Transactions of the Kokushikan University science and engineering (12), 31-42, 2019-03

    IR 

  • Stabilization effects of carboxylate on pyrotechnic compositions including Mg powder in water

    Nishiwaki Yosuke , Matsunaga Takehiro , Kumasaki Mieko

    … Magnesium powder is a common fuel in the field of pyrotechnics. … Melted stearic acid was mixed with magnesium, and coating of stearic acid on magnesium particles was confirmed. …

    Journal of Thermal Analysis and Calorimetry, 1-6, 2019-02-15

    IR 

  • Strength analysis of dissimilar spot welding:(Analysis of <i>Fe-Cu</i> spot welding)  [in Japanese]

    KIMURA Yusuke , NAMBU Koichiro , YUN Kyyoul , OKUMIYA Masahiro

    … <p>Recently, weight reduction of vehicles has been advanced to improve the fuel efficiency. … Some parts of the contact surface are melted. …

    The Proceedings of the Materials and Mechanics Conference 2019(0), OS1407, 2019

    J-STAGE 

  • Effect of Weld Characteristics for Al Alloy Sheet on joint Strength of Fe-Al Resistance Spot-welded Joints  [in Japanese]

    AKIDUKI Kenta , TAGUCHI Yuya , IYOTA Muneyoshi

    … <p>In recent years, it has been promoted to apply aluminum alloys to automobile structural components in order to reduce body weight and improve the fuel efficiency. … As the result, it was indicated that the crack was progressed in the aluminum alloy of melted area. … In addition, it was confirmed that there was the difference of crack propagation behavior for the aluminum alloy of melted area, depending on the shape of the electrodes. …

    The Proceedings of the Materials and Mechanics Conference 2019(0), OS1408, 2019

    J-STAGE 

  • Development of an atomic interior surveying robot using low melting point alloy:-Improvement of locking mechanism and compressive failure experiment-  [in Japanese]

    SETO Noriaki , CANETE Luis , TAKAHASHI Takayuki

    … <p>This study aims to develop a robot for surveying the interior of a nuclear reactor and sampling fuel debris. … To sample fuel debris that has melted in the lower part of the primary containment vessel, it is necessary to extend a rigid arm up to 3 m through a guide pipe with a diameter of 100 mm. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 2A1-B08, 2019

    J-STAGE 

  • EXPERIMENTAL MODELING OF FUEL PINS CLADDING MELTING WHILE SEVERE ACCIDENT IN LEAD COOLED REACTOR

    Lobanov Pavel , Pribaturin Nikolay , Svetonosov Aleksandr , Zhdanov Vladimir , Usov Eduard , Evdokimenko Ilya

    … This paper presents results of experimental modelling of melting of fuel pin shell in lead cooled reactor. … A lead was used as a test coolant and zinc was used as material of modeling cladding of a fuel pin. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 2220, 2019

    J-STAGE 

  • DEVELOPMENT OF REMOTELY CONTROLLED DEVICE FOR INVESTIGATION INSIDE PRIMARY CONTAINMENT VESSEL AT FUKUSHIMA DAIICHI UNIT 2

    Ueda Koji , Shimizu Chiari , Kobayashi Taiji , Sakamoto Naoya , Kume Naoto , Uranishi Atsuyoshi , Murai Yoichi

    … The fuel at Fukushima Daiichi Nuclear Power Station was melted down to the primary containment vessel (PCV) due to the accident on 2011. … Investigations have been conducted to understand the state of structures and fuel debris inside the PCV prior to their removal. … During our investigation conducted in January 2018, the device successfully captured images of some deposited materials, which were considered to be fuel debris. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1909, 2019

    J-STAGE 

  • Utilization of Waste Plastic as an Auxiliary Fuel in Rotating Melting Furnace  [in Japanese]

    OKADA Masaharu , TSUJI Eiichi , HOSHO Fumiki

    … However, bottom ash to be melted containing little inflammable substances does not contribute to melting. … It is therefore one of the most important things in melting furnaces to cut fuel cost, which leads to the running cost cut. …

    The Proceedings of the Symposium on Environmental Engineering 2019.29(0), OS201, 2019

    J-STAGE 

  • Development of an atomic interior surveying robot:-Prototyping of sampling arm unit using low melting point alloy-  [in Japanese]

    SETO Noriaki , CANETE Luis , TAKAHASHI Takayuki

    … <p>This study aims to develop a robot for surveying the interior of a nuclear reactor and sampling fuel debris. … To sample fuel debris that has melted in the lower part of the primary containment vessel, it is necessary to extend a rigid arm up to 3 m through a guide pipe with a diameter of 100 mm. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018(0), 1P2-M02, 2018

    J-STAGE 

  • Investigation inside primary containment vessel (PCV) of Fukushima Daiichi Nuclear Power Station Unit 2 and 3  [in Japanese]

    SAEKI Ryoichi , MATSUZAKI Kenji , SUGIURA Tessai , URANISHI Atsuyoshi , UEDA Koji

    … However, the conditions inside the PCVs were unknown despite the fact that it is totally essential to confirm the existence of fuel debris to examine the methodologies and procedures for the retrieval in the next stage. … damaged components remaining in the pedestals;and solid substances adhered on the components, which considered to be melted fuel debris. …

    The Proceedings of the National Symposium on Power and Energy Systems 2018.23(0), A111, 2018

    J-STAGE 

  • Validation of the Localized Fire Test Method for On-board Hydrogen Storage Systems  [in Japanese]

    Tamura Yohsuke , Yamazaki Koji , Maeda Kiyotaka , Sato Kenji

    水素燃料電池自動車の世界統一基準で規定される局所火;炎暴露試験には,容器単体で評価される"Method1"と容器が車載状態で評価される "Method2"があり、自動車メーカは、いずれかの方法を選択できる.本研究では,Method2に着目し,その特性の把握および試験法の妥当性を検証するため,バーナの火力(プロパンガス流量)やバーナ火炎の熱電対温度を同条件にし …

    Transactions of Society of Automotive Engineers of Japan 49(4), 793-798, 2018

    J-STAGE 

  • Isotopic signature and nano-texture of cesium-rich micro-particles: Release of uranium and fission products from the Fukushima Daiichi Nuclear Power Plant

    Imoto Junpei , Ochiai Asumi , Furuki Genki , Suetake Mizuki , Ikehara Ryohei , Horie Kenji , Takehara Mami , Yamasaki Shinya , Nanba Kenji , Ohnuki Toshihiko , Law Gareth T. W. , Grambow Bernd , Ewing Rodney C. , Utsunomiya Satoshi , 山﨑 信哉

    … The 235U/238U values in two CsMPs: 0.030 (±0.005) and 0.029 (±0.003), are consistent with that of enriched nuclear fuel. … The values are higher than the average burnup estimated by the ORIGEN code and lower than non-irradiated fuel, suggesting non-uniform volatilization of U from melted fuels with different levels of burnup, followed by sorption onto Zn–Fe-oxides. …

    Scientific reports (7), 5409, 2017-07

    IR 

  • Investigation of the Chemical Characteristics of Individual Radioactive Microparticles Emitted from Reactor 1 by the Fukushima Daiichi Nuclear Power Plant Accident by Using Multiple Synchrotron Radiation X-ray Analyses  [in Japanese]

    小野 貴大 , 飯澤 勇信 , 阿部 善也 , 中井 泉 , 寺田 靖子 , 佐藤 志彦 , 末木 啓介 , 足立 光司 , 五十嵐 康人 , 末木 啓介

    … Various elements related to fission products of nuclear fuel and components of the reactor were detected from the particles emitted from the FDNPP reactor 1 with an obvious heterogeneous elemental distribution. … Our results suggest the fact that the nuclear fuel and the reactor vessels around the fuel were melted together at a very early stage of the accident. …

    分析化学 66(4), 251-261, 2017-04

    IR 

  • Caesium-rich micro-particles: A window into the meltdown events at the Fukushima Daiichi Nuclear Power Plant

    Furuki Genki , Imoto Junpei , Ochiai Asumi , Yamasaki Shinya , Nanba Kenji , Ohnuki Toshihiko , Grambow Bernd , Ewing Rodney C. , Utsunomiya Satoshi , 山﨑 信哉

    … The nano-texture in the CsMPs records multiple reaction-process steps during meltdown in the severe FDNPP accident: Melted fuel (molten core)-concrete interactions (MCCIs), incorporating various airborne fission product nanoparticles, including CsOH and CsCl, proceeded via SiO2 condensation over aggregates of Zn-Fe oxide nanoparticles originating from the failure of the reactor pressure vessels. …

    Scientific reports (7), 42731, 2017-02

    IR 

  • Isotopic signature and nano-scale texture of cesium-rich micro-particles: Release of uranium and fission products from the Fukushima Daiichi Nuclear Power Plant  [in Japanese]

    Imoto Jumpei , Grambow Bernd , Ewing Rodney C. , Utsunomiya Satoshi , Ochiai Asumi , Furuki Genki , Horie Kenji , Takehara Mami , Yamasaki Shinya , Nanba Kenji , Ohnuki Toshihiko , Law Gareth T. W.

    福島第一原発から放出された高放射性Cs含有粒子 (CsMPs) の U, Cs, Ba, Rb, K, and Ca同位体組成比を分析し、電子顕微鏡観察と比較した。結晶質のFe-pollucite, CsFeSi<sub>2</sub>O<sub>6</sub>nH<sub>2</sub>Oの存在が確認され、また、Zn&nda …

    Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2017(0), 115, 2017

    J-STAGE 

Page Top