OHTANI Hideo

Affiliation

Faculty of Environment and Information Sciences, Division of Artificial Environment and Information

Job Title

Professor

Date of Birth

1955

Research Fields, Keywords

Safety Engineering,Social System Engineering

Mail Address

E-mail address



Graduating School 【 display / non-display

  •  
    -
    1978

    The University of Tokyo   Faculty of Engineering   Graduated

Graduate School 【 display / non-display

  •  
    -
    1983

    The University of Tokyo  Graduate School, Division of Engineering  Doctor Course  Completed

Degree 【 display / non-display

  • Doctor of Engineering -  The University of Tokyo

Campus Career 【 display / non-display

  • 2006.04
    -
    Now

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Artificial Environment and Information   Professor  

  • 2005.01
    -
    2006.03

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Professor  

  • 2001.04
    -
    2004.12

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Associate Professor  

  • 1992.04
    -
    2001.03

    Duty   Yokohama National UniversitySchool of Engineering   Associate Professor  

  • 1989.04
    -
    1992.03

    Duty   Yokohama National UniversitySchool of Engineering   Lecturer  

display all >>

External Career 【 display / non-display

  • 1987.04
    -
    1989.03

      Researcher  

  • 1983.04
    -
    1987.03

      Researcher  

Academic Society Affiliations 【 display / non-display

  •  
     
     
     

    Japan Association for Fire Science and Engineering

  •  
     
     
     

    Japan Society for Sadety Engineeeing

  •  
     
     
     

    International Association for Fire Safety Science

  •  
     
     
     

    Chemical Sciety of Japan

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Social System Engineering

  • Safety Engineering

 

Research Career 【 display / non-display

  • Evaluation of explosion hazard concerning semiconductor material gases

    Project Year:  -   

  • Simulation of extinguishment of a large tank fire

    The Other Research Programs  

    Project Year:  -   

  • Risk Assessment on Chemical Plant

    Project Year:  -   

  • Development of novel fire extinguishing agent

    Project Year:  -   

Thesis for a degree 【 display / non-display

  • 高分子物質の自然対流下における燃焼に関する研究

    大谷英雄 

      1983.03

    No Setting   Single Work

Papers 【 display / non-display

  • Evacuation Intention of Nearby Residents in Case of Toxic Gas Release at a Chemical Plant

    Kim Bongchan, Koshiba Yusuke, Ohtani Hideo

    Journal of Japan Society for Safety Enginennring ( Japan Soceiety for Safety Engineering )  59 ( 2 )   92 - 102   2020

    Joint Work

     View Summary

    <p>The purposes of this study are to investigate the factors affecting evacuation intension of residents who live around chemical plants in case of toxic gas release. In this study, a questionnaire survey was conducted to respondents(n =784)who live in Kawasaki city. We extracted five factors using explanatory factor analysis, and the factors were named as "Environmental status", "Knowledge", "Fear of toxic gas", "Fear of chemical plant", and "Subjective norm". Correlation analysis showed that the factors, except for the Knowledge factor, were correlated with each other, and the Knowledge factor was correlated with only the Fear of toxic gas factor. A multiple regression analysis revealed that the evacuation intention of participants depends on the three latent factors(i.e., Environmental status, Subjective norm, Fear of toxic gas), two independent variables(i.e., administrative estimate about evacuation, irksomeness evacuation), and three demographic variables(i.e., age, living with child(ren), number of vulnerable people).</p>

    DOI CiNii

  • Risk assessment and risk reduction of an acrylonitrile production plant

    Kazuhiko Sano, Yusuke Koshiba, Hideo Ohtani

    Journal of Loss Prevention in the Process Industries ( Elsevier )  63   2019.11  [Refereed]

    Joint Work

    DOI

  • Fire suppression efficiency of water mists containing organic solvents

    Yusuke Koshiba, Yohei Yamamoto, Hideo Ohtani

    Journal of Loss Prevention in the Process Industries ( Elsevier )  62   2019.10  [Refereed]

    Joint Work

    DOI

  • Flame inhibition by calcium compounds: Effects of calcium compounds on downward flame spread over solid cellulosic fuel

    Yusuke Koshiba, Takuya Haga, Hideo Ohtani

    Fire Safety Journal ( Elsev ier )  109   2019.09  [Refereed]

    Joint Work

    DOI

  • Risk and Dream

    Ohtani Hideo

    Journal of Japan Society for Safety Enginennring ( Japan Soceiety for Safety Engineering )  58 ( 1 )   1 - 1   2019.02  [Invited]

    Single Work

    DOI CiNii

display all >>

Review Papers 【 display / non-display

display all >>

Grant-in-Aid for Scientific Research 【 display / non-display

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2018.04  -  2021.03 

Presentations 【 display / non-display

  • A Questionnaire Survey on the Factors Influencing Evacuation Behavior in Case of Toxic Chemical Release Accidents

    KIM Bongchan, SUNOHARA Yuki, KOSHIBA Yusuke, OHTANI Hideo

    The Proceedings of the Industrial, Chemical Machinery & Safety Division Conference  2017   The Japan Society of Mechanical Engineers

     View Summary

    In this study, questionnaire-based survey was conducted for younger adults (n=108) on factors influencing the evacuation behavior in case of leakage of toxic gas. In addition, the means of transportation and informative way were investigated for effective evacuation guidance. Impeding factors for evacuation were then extracted through factor analysis. As a result, the five factors are labeled as follows: 1) environmental, 2) fear, 3) knowledge, 4) anxious about evacuation, 5) contents of information. The survey also revealed that automobile & motorcycle and TV & radio are considered to be the most suitable as the means of transportation and the informative way respectively.

    DOI CiNii

  • GS-7 Identification of solid-phase flame inhibitors from vadadocene

    TAKAHASHI Tomohide, KOSHIBA Yusuke, OHTANI Hideo

    The Proceedings of the Industrial, Chemical Machinery & Safety Division Conference  2014   The Japan Society of Mechanical Engineers

    DOI CiNii

  • S1720102 Explosion characteristics of alkanes in nitrous oxide atmospheres

    NISHIDA Takuya, KOSHIBA Yusuke, OHTANI Hideo

    The Proceedings of Mechanical Engineering Congress, Japan  2014   The Japan Society of Mechanical Engineers

     View Summary

    It is important to know explosive conditions for preventing gas explosion. However, despite the fact that some unexpected explosion accidents were caused by nitrous oxide (N_2O), few studies have been reported on explosion characteristics of flammable gases in N_2O atmospheres. In this study, we focused on explosion characteristics of mixtures containing N_2O. This study experimentally investigated explosion characteristics (e.g., explosion limit, explosion pressure, time to the explosion pressure, deflagration index ) of alkane (carbon number: 1 to 8) - N_2O mixtures in a 0.94-L closed cylindrical vessel at ambient temperature and pressure. The explosion characteristics of the mixtures containing N_2O were compared with those of corresponding mixtures containing O_2 or air. The measurements showed that LELs of the mixtures containing N_2O were lower than those of the mixtures containing O_2. Also, no significant influence of the carbon number on the maximum explosion pressures of the mixtures containing N_2O was observed. The deflagration index of the mixtures containing O_2 were approximately three times as high as those of the mixtures containing N_2O.

    DOI CiNii

  • S1720101 Comparison of physical risks of a chemical plant with different characteristics

    FUJIOKA Taiki, KOSHIBA Yusuke, OHTANI Hideo

    The Proceedings of Mechanical Engineering Congress, Japan  2014   The Japan Society of Mechanical Engineers

     View Summary

    Severe fire and explosion accidents at chemical plants have recently occurred in Japan. Nevertheless, few studies are reported on recognition of physical risks. In this study, we performed a questionnaire survey for inhabitants (n = 121) living near a chemical plant where a fire accident had occurred. This study compares perceived risk of "heat and fire" with that of "toxic gases" by employing Wilcoxon signed-rank and Mann-Whitney U tests. Wilcoxon signed-rank tests show that "toxic gases," which are invisible and hard to understand how risky phenomenon, are perceived as a more serious risk than "heat and fire", which cause not only harm but also losses. U tests show that the distances from the plant to inhabitant's houses had little influence on perceived risk. Besides, inhabitants who have children less than 15 years perceived unacceptable risk of a fire at the plant since they seriously perceived risk of "toxic gases." From these results, even at the same accident, physical risks having different characteristics affect different variables and should not to be treated equally.

    DOI CiNii

  • GS-1 Influence of explosion experience on public perception of risk

    Koshiba Yusuke, Ohtani Hideo

    The Proceedings of the Industrial, Chemical Machinery & Safety Division Conference  2013   The Japan Society of Mechanical Engineers

     View Summary

    In order to explore the influence of experiencing accidental explosions at a chemical plant on public perception of risk, this study investigates perceived risk of inhabitants living near a chemical plant where accidental explosions occurred (group A) and that of inhabitants living near a chemical plant where no serious accident happened (group B). Our questionnaire survey revealed that (1) participants of group A has a greater dread compared to those of group B; (2) the accident experience hardly influence rating of health risks; and (3) "frequency of accidents" variable is a dominant factor that influences decision making whether they participate in physical risk communication or not.

    DOI CiNii

display all >>

Preferred joint research theme 【 display / non-display

  • Development of a novel fire extinguishment agent