DOI QR코드

DOI QR Code

Investigation on the Field Application of the Flammable Limit of Vaporized Gasoline

휘발유 유증기 폭발범위의 현장 적용성에 관한 연구

  • Kang, Jung Ki (Supreme Prosecutors' Office) ;
  • You, Woo Jun (Korea Fire Institute of Industrial & Technology) ;
  • Choi, Don-Mook (Dept. of Fire & Disaster Protection Engineering Graduate School, Gachon Univ.)
  • Received : 2015.08.09
  • Accepted : 2015.08.24
  • Published : 2015.08.31

Abstract

In this study, the conditions of explosion range of gasoline, which is used as combustion improver, are experimentally analyzed. Two types of compartment, which is the small scale ($0.5m{\times}0.5m{\times}1.0m$) and the middle scale ($0.5m{\times}0.5m{\times}1.0m$), are mocked-up and the auto-control systems are installed in order to measure the vaporized gasoline and the moment of pressure, ignition time and maximum pressure. In case the maximum flammable limit of gasoline is up to 22.4 Vol% not the generalized range of 1.4~7.6 Vol% when nichrome igniter of $700^{\circ}C$ is used. These results can be appled to the analytical prediction of fire identification in the field of explosion.

본 연구에서는 휘발유가 연소촉진제로 사용되어 폭발현상이 발생할 수 있는 조건을 실험적으로 분석하였다. 이를 위해서 소형(Small scale $0.5m{\times}0.5m{\times}1.0m$), 및 중형(Middle $0.9m{\times}0.9m{\times}1.5m$) 구획 공간을 제작하고 자동제어시스템을 구성하여 공간 내부에서 기화된 휘발유 양을 산출하였으며, 공간 내부의 순간 압력, 착화 시간 그리고 최대 압력의 시간 간격을 측정하였다. 그 결과 최대 온도 약 $700^{\circ}C$ 정도인 니크롬선을 점화원으로 사용한 경우 휘발유 폭발 범위는 1.4 Vol%~7.6 Vol% 보다 넓은 최대 22.4 Vol%까지 발생하였다. 본 연구의 결과는 유증기에 의한 폭발현장 조사 시 화재 감식을 분석적으로 판단하는데 유용한 자료가 될 것으로 사료된다.

Keywords

References

  1. H. J. Park, "A Study on the Impact of Combustion Accelerants on the Burning Rate of Flammable Materials in Arson Crimes", pp. 1-8 (2013).
  2. Fire investigation team, "Case Study", SUPREME PROSECUTORS' OFFICE, pp. 130-131 (2014).
  3. Patrick M. Kennedy, "Explosion Investigation and Analysis", NAFI The Investigations Institute, Sarasota, Florida 34243, pp. 31-60 (1990).
  4. D. M. Ha, "A Study on Explosive Limits of Flammable Materials - Prediction of Explosive Properties and Temperature Dependence of Explosive Limits for n-Alcohols -", Journal of the Korean Institute of Industrial Safety, Vol. 14, No. 1, p. 2 (1999).
  5. S. Y. Kim, "A Study on the Method of Reconstruction Test for Fire Investigation- Focus on the Cause of Gasoline Vapor Explosion in an Enclosure -", National Fire Service Academy, pp. 1-2 (2012).
  6. Patrick M. Kennedy, "Explosion Investigation and Analysis", NAFI The Investigations Institute, Sarasota, Florida 34243, pp. 31-60 (1990).

Cited by

  1. A Study on Initial Fuel Expectation Based on Flash Fire Phenomenon vol.18, pp.7, 2018, https://doi.org/10.9798/KOSHAM.2018.18.7.255