Updated on 2024/01/10

写真a

 
Yutaro Aoki
 

Degree

  • Bachelor of Engineering   Coursework ( 2016.3   Fukui University of Technology )

  • Master of Engineering   Coursework ( 2018.3   Fukui University of Technology )

  • Doctor of Engineering   Coursework ( 2021.3   Fukui University of Technology )

Research Interests

  • Small Modular Reactors

  • Gel Dosimeter

  • Nuclear Engineering

  • Radiation Chemistry

Research Areas

  • Life Science / Radiological sciences  / Gel Dosimeter

  • Energy Engineering / Nuclear engineering  / Application of Small Modular Reactors

Education

  • Fukui University of Technology   Graduated

    2012.4 - 2016.3

  • Fukui University of Technology   Department of Applied Science and Engineering   Master's Course   Completed

    2016.4 - 2018.3

  • Fukui University of Technology   Department of Applied Science and Engineering   Doctor's Course   Completed

    2018.4 - 2021.3

Research History

  • Fukui University of Technology

    2021.4 - 2021.8

  • Fukui University of Technology   Postdoctoral Researcher

    2021.6 - 2021.8

  • Ontario Tech University   Faculty of Energy System & Nuclear Science   Post Doctoral Fellow

    2021.9 - 2022.3

 

Papers

  • Study of in-situ measuring device for γ-ray irradiation of PVA-KI gel dosimeter Reviewed International coauthorship

    Takeyoshi SUNAGAWA, Sachiko YOSHIHASHI, Glenn HARVEL, Yutaro AOKI

    Memoirs of Fukui University of Technology   ( 53 )   46 - 51   2023.10

  • Dehydration of Decommissioning Gels for Waste Reduction Reviewed International coauthorship International journal

    Glenn Harvel, Valeria Senka, Yutaro AOKI, Takeyoshi Sunagawa

    5th Canadian Conference on Waste Management, Decommissioning and Environmental Restoration   2023.8

    　More details

    One method of decontamination or capture of loose contaminants during the decommissioning process is the use of gels. Gels have some advantages over water based solutions in that spills are much easier to clean up while a water based solution may penetrate the concrete or soil and spread contaminants further. One disadvantage of gels is that they include other constituents that increase the overall waste volume. Thus, will they can do an excellent job of capturing and securing loose contaminants, they will increase the total volume shipped to a waste site for disposal. Regardless of the hydrocarbon compound used in the gel, there is usually also some water present. In this work, we examine two methods for the reduction of the gel volume by eliminating the water content. For gels that use water as part of their creation, this can result in waste mass reduction by greater than 80% and possible volume reduction greater than 85%. The first method assessed is natural evaporation processes and the second method assessed is a distillation process. The first process is much slower but is more reliable in ensuring that the water is evaporated from the gel leaving a dry puck for easy disposal. The second process is able to obtain higher volume reductions faster and is also able to breakdown some of the hydrocarbons releasing other non-contaminants however the second method is more challenging to ensure there is no carry over the waste product. The paper will discuss the nature of the gels tested, both techniques, and the volume reduction results obtained to date.

  • Development of in situ measuring device for irradiation of PVA-KI gel dosimeter Reviewed International coauthorship

    Takeyoshi SUNAGAWA, Glenn HARVEL, Yutaro AOKI, Kyo KUME

    ( 52 )   34 - 39   2022.10

    　More details

    In recent years, radiation therapy, which enables local treatment without excising the affected area, has attracted attention in an aging society. In addition, high-precision radiotherapy that gives the maximum dose to the tumor and minimizes the dose to normal tissues is widespread, and it is necessary to perform dose verification in order to make a precise treatment plan. In our laboratory, using partially saponified polyvinyl alcohol (PVA) and potassium iodide (KI). We have developed a new gel-like chemical dosimeter that has excellent characteristics for X-ray and heavy ion beam visualization in the range of absorbed doses of 2 Gy to 20 Gy. In this study, we constructed a system for in situ measurement of light absorption by gel during He ion beam irradiation, and attempted to clarify the characteristics in the absorbed dose range by measuring less than 20 Gy.

  • Research and Development of PVA-KI Gel Dosimeter Reviewed International coauthorship

    Y. AOKI, G. HARVEL, M. TAGUCHI, N. NAGASAWA, T. SAKURA, T. SUNAGAWA

    2018 Pacific Basin Nuclear Conference   326 - 330   2018

  • Development of a Gel Type Dosimeter for X-ray Filds International coauthorship

    Y. AOKI, G. HARVEL, T. SAKURA, and T. SUNAGAWA

    2017 25th International Conference on Nuclear Engineering   9 ( V009T15A052 )   2017.6

Presentations

  • Study on dose estimiation of PVA-KI gel dosimeter using RGB analysis method International coauthorship

    2023.9 

  • DEHYDRATION OF DECOMMISSIONING GELS FOR WASTE REDUCTION Invited International coauthorship International conference

    G. Harvel, V. Senka, R. Khurmi, Y. Aoki, T. Sunagawa

    5th Canadian Conference on Nuclear Waste Management, Decommissioning and Environmental Restoration  2023.8  The Canadian Nuclear Society

    　More details

    One method of decontamination or capture of loose contaminants during the decommissioning process is the use of gels. Gels have some advantages over water based solutions in that spills are much easier to clean up while a water based solution may penetrate the concrete or soil and spread contaminants further. One disadvantage of gels is that they include other constituents that increase the overall waste volume. Thus, will they can do an excellent job of capturing and securing loose contaminants, they will increase the total volume shipped to a waste site for disposal. Regardless of the hydrocarbon compound used in the gel, there is usually also some water present. In this work, we examine two methods for the reduction of the gel volume by eliminating the water content. For gels that use water as part of their creation, this can result in waste mass reduction by greater than 80% and possible volume reduction greater than 85%. The first method assessed is natural evaporation processes and the second method assessed is a distillation process. The first process is much slower but is more reliable in ensuring that the water is evaporated from the gel leaving a dry puck for easy disposal. The second process is able to obtain higher volume reductions faster and is also able to breakdown some of the hydrocarbons releasing other non-contaminants however the second method is more challenging to ensure there is no carry over the waste product. The paper will discuss the nature of the gels tested, both techniques, and the volume reduction results obtained to date.

  • Research and development of lead block cutting technique for decommissioning nuclear power plants International coauthorship International conference

    Tomohisa Gotou, Takeyoshi Sunagawa, Glenn Harvel, Yutaro Aoki

    30th International Conference on Nuclear Engineering  2023.5  The Japan Society of Mechanical Engineers, The American Society of Mechanical Engineers, Chinese Nuclear Society

  • Considerations of applying nuclear technology in the remote northern communities of Canada International coauthorship International conference

    Glenn Harvel, Yutaro Aoki

    30th International Conference on Nuclear Engineering  2023.5  The Japan Society of Mechanical Engineers, The American Society of Mechanical Engineers, Chinese Nuclear Society

  • Applicability of SMR Technology in Japan Reactor -Thermal Application- International coauthorship

    2023.3 

  • Research and development of lead block cutting technique for decommissioning nuclear power plants Ⅱ International coauthorship

    2023.3 

  • Study of light absorption in-situ measurement by γ ray irradiation to PVa-KI gel dose meter International coauthorship

    2023.3 

  • Applicability of SMR Technology for Japan International coauthorship International conference

    Glenn HARVEL, Yutaro AOKI

    41st Annual Conference of the Canadian Nuclear Society  2022.6  Canadian Nuclear Society

    　More details

    As the world considers SMRs as an option for climate change, the use of SMRs in different regions needs to be considered. Japan has successfully restarted 9 of its large reactors since the Fukushima Daiichi event all of which are large scale reactors. In Japan, which depends on imports for energy resources, nuclear power generation is an important source of base-load power. On the other front, the place where Japanese nuclear power plants can be installed are limited. Therefore, a large scale reactor is required for a nuclear reactor operated to obtain maximum power from the site area. This is challenging to install SMRs only for the purpose of obtaining electric power in Japan. Thus, it is important to examine multipurpose uses of SMRs in Japan to determine whether there is a role for them to play. This paper examines the current status of SMR designs and their potential use for non-power applications. The paper also reviews the non-power requirements in Japan and attempts to match possible SMR types against non-power requirements. Considerations such as heat for chemical processes, hydrogen production, are discussed.

  • Research and Development of PVA-KI Gel Dosimeter International coauthorship International conference

    2018 Pacific Basin Nuclear Conference  2018.10  American Nuclear Society

  • Development of a Gel Type Dosimeter for X-ray Fields International coauthorship International conference

    Y. AOKI, G. HARVEL, T. SAKURA, and T. SUNAGAWA

    2017 25th International Conference on Nuclear Engineering  2017.7  American Society of Mechanical Engineers

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Teaching Experience

  • Nuclear Robotics

    2022.4
    Institution：Fukui University of Technology

  • FUT Practical Studies Exercise Ⅰ

    2022.4
    Institution：Fukui University of Technology

  • Fundamental engineering experiment (Radiation measurement experiment)

    2022.4
    Institution：Fukui University of Technology

  • Advanced Nuclear Power Engineering

    2022.4
    Institution：Fukui University of Technology

  • career seminar Ⅲ

    2022.4
    Institution：Fukui University of Technology

  • career seminar Ⅰ

    2022.4
    Institution：Fukui University of Technology

  • Project Study

    2022.4
    Institution：Fukui University of Technology

  • Nuclear Reactor Plant Engineering

    2022.4
    Institution：Fukui University of Technology

  • Fundamental engineering experiment (Electrical and mechanical experiments)

    2022.4
    Institution：Fukui University of Technology

  • Advanced Nuclear Energy Systems Engineering

    2022.4
    Institution：Fukui University of Technology

  • Fundamental engineering experiment (Non-destructive testing experiments)

    2022.4
    Institution：Fukui University of Technology

  • FUT Practical Studies Exercise Ⅱ

    2022.4
    Institution：Fukui University of Technology

  • Differential and Integral Calculus I

    2022.4
    Institution：Fukui University of Technology

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