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2022 Vol.24, Issue 6 Preview Page

Research Paper

Development of FCEV accident scenario and analysis study on dangerous distance in road tunnel

도로터널에서 수소차 사고시나리오 개발 및 위험거리에 대한 분석 연구

Hu-Yeong Lee1
,
Ji-Oh Ryu2*
이 후영1
,
류 지오2*
1Student, Dept. of ICT Mechanical Engineering, Shinhan University Graduate School
2Professor, Dept. of Mechanical and Automotive Engineering. Shinhan University
1정회원, 신한대학교 대학원 ICT기계공학과 박사과정
2정회원, 신한대학교 기계자동차융합공학과 교수
*Corresponding Author
30 November 2022. pp. 659-677
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Abstract

Hydrogen is emerging as a next-generation energy source and development and supply of FCEV (hydrogen fuel cell electric vehicle) is expected to occur rapidly. Accordingly, measures to respond to hydrogen car accidents are required and researches on the safety of hydrogen cars are being actively conducted. In this study, In this study, we developed a hydrogen car accident scenarios suitable for domestic conditions for the safety evaluation of hydrogen car in road tunnels through analysis of existing experiments and research data and analyzed and presented the hazard distance according to the accident results of the hydrogen car accident scenarios. The accident results according to the hydrogen car accident scenario were classified into minor accidents, general fires, jet flames and explosions. The probability of occurrence of each accident results are predicted to be 93.06%, 1.83%, 2.25%, and 2.31%. In the case of applying the hydrogen tank specifications of FCEV developed in Korea, the hazard distance for explosion pressure (based on 16.5 kPa) is about 17.6 m, about 6 m for jet fire, up to 35 m for fireball in road tunnel with a standard cross section (72 m2).

Keywords
FCEV accident scenario
Jet flame
Fireball
Hydrogen explosion
Hazard distance

수소는 차세대 에너지원으로 부각되고 있으며, 수소차(FCEV)개발 및 보급이 급속도로 이루어질 것으로 예상된다. 이에 수소차 사고에 대응하기 위한 대책이 요구되고 있으며, 수소차의 안전성에 대한 연구가 활발히 진행되고 있다. 본 연구에서는 기존 실험 및 연구자료에 대한 분석을 통해 도로터널에서 수소차 안전성 평가를 위하여 국내 실정에 맞는 수소차 사고시나리오를 개발하였으며, 수소차 사고시나리오의 사고결과에 대한 위험거리를 분석ㆍ제시하였다. 수소차 사고시나리오에 따른 사고결과는 경미한 사고, 일반화재, 제트화염, 폭발로 구분되며, 각각의 발생확률을 93.06%, 1.83%, 2.25%, 2.31%로 예측된다. 표준단면(72 m2)의 도로터널에서 국내에서 시판되는 수소차량의 수소탱크제원을 적용하는 경우, 사고결과에 따른 위험거리는 폭발의 경우 약 17.6 m (폭발압력 16.5 kPa기준), 제트화염은 약 6 m, 파이어볼 형성에 따른 위험거리는 최대 35 m로 분석되었다.

키워드
수소차 사고시나리오
제트화염
파이어볼
수소차 폭발
위험거리
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Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 24
  • No :6
  • Pages :659-677
  • Received Date : 2022-10-21
  • Revised Date : 2022-11-08
  • Accepted Date : 2022-11-08
  • DOI :https://doi.org/10.9711/KTAJ.2022.24.6.659
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