한국안전학회지 (Journal of the Korean Society of Safety)

  • 제37권6호
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  • Pages.158-165
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  • 2022
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  • 1738-3803(pISSN)
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  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
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수소자동차의 제트화염 발생에 따른 위험성 분석

Risk Analysis of Jet Flame Occurred at Hydrogen Fuel Cell Vehicle

  • 박병직 (한국건설기술연구원 화재안전연구소) ;
  • 김양균 (한국건설기술연구원 화재안전연구소) ;
  • 임옥근 (동아대학교 경찰.소방학과)
  • Byoungjik, Park (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Yangkyun, Kim (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Ohk Kun, Lim (Department of Police and Fire Administration, Dong-A University)
  • 투고 : 2022.11.14
  • 심사 : 2022.12.01
  • 발행 : 2022.12.31
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초록

Eco-friendly policies proposed by the government of The Republic of Korea have encouraged the use of eco-friendly vehicles. Hydrogen vehicles have exhibited the highest growth rate, although the current number of registered vehicles is low. In hydrogen vehicles, a thermally activated pressure relief device (TPRD) is installed to prevent explosions in the hydrogen gas cylinder. When discharged due to low ignition energy, hydrogen gas readily forms a jet flame. The risks induced by such jet flames were analyzed through a numerical analysis. Jet flames can activate TPRDs installed in nearby hydrogen gas cylinders. As a result, high-voltage cables exposed in the lower area of a vehicle can ignite within seconds. There was a 9.5-kW/m2 area around the vehicle (which can result in casualties) at a distance of ~5 m from the hydrogen gas cylinder, and a 37.5-kW/m2 area (which can cause significant damage) in the form of an inverted triangle toward the lower section of the vehicle. We believe that the risk factors analyzed herein should be considered for addressing accidents in hydrogen vehicles.

키워드

과제정보

Research for this paper was carried out under the KICT Research Program (project no. 20220232-001, Development of technology to secure safety and acceptability for infrastructure in hydrogen city) funded by the Ministry of Science and ICT.

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