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A Study on the decision of Scattering distance by Shape of Fragments in LPG Tank lorry Explosion

LPG 탱크로리 폭발시 파편 형상에 따른 비산거리 산정에 관한 연구

  • Lee, Young Jin (Dept. of Environment Technology and Safety Technology Convergence, Inha Univ.) ;
  • Hwang, Yong Woo (Dept. of Environment Technology and Safety Technology Convergence, Inha Univ.) ;
  • Lee, Ik Mo (Dept. of Environment Technology and Safety Technology Convergence, Inha Univ.) ;
  • Moon, Jin Young (Dept. of Environmental Engineering & Health Science, Jaeneung Univ.)
  • 이영진 (인하대학교 대학원 환경안전융합전공) ;
  • 황용우 (인하대학교 대학원 환경안전융합) ;
  • 이익모 (인하대학교 대학원 환경안전융합) ;
  • 문진영 (재능대학교 환경보건과)
  • Received : 2017.12.13
  • Accepted : 2017.12.26
  • Published : 2017.12.31

Abstract

LPG is a substance that requires a lot of attention because it can cause fatal damage to people and environment when an accident occurs. LPG is frequently accidents in transportation facilities as well as fixed facilities, among which LPG tank lorries are the most frequent accidents. When the LPG tank is evacuated, the LP gas leaks into two phases, leaks mostly to the gas and leaks to some liquid. At this time, the leaked gas will also sink downward because it is heavier than air, and if it continues to leak, it may form an explosion and explode by the ignition source. The purpose of this study is to present the evacuation distance by analyzing the effect distance of the LPG liquefied petroleum gas in the event of explosion. As a result of calculation of the scattering radius of the fragment, the cylinder fragment was scattered up to 561 m. Therefore, it is appropriate to set the distance to be escaped when the LPG tanker leaks to 561m or more.

LPG는 사고발생시 사람이나 환경에 치명적인 피해를 가져올 수 있으므로 많은 주의가 필요한 물질이다. LPG는 고정시설 뿐 아니라 운송시설에서도 사고가 빈번하게 발생하며, 그 중 LPG 탱크로리의 사고가 가장 많다. LPG 탱크로리가 운송중 전도되었을 때 LP가스는 2상(two phase) 상태로 누출되어, 대부분 기체로 누출되고 일부분 액체로 누출된다. 이때 누출된 기체도 공기보다 무겁기 때문에 아래로 가라앉게 되고, 누출이 계속된다면 증기운을 형성하여 점화원에 의해 폭발할 수도 있다. 본 연구에서는 LPG 탱크로리의 증기운 폭발 사고 발생시 파편에 대한 영향거리를 분석하여 대피거리를 제시함을 목적으로 한다. 파편의 비산반경 산출 결과, 최대 561m 비산하였다. 따라서 LPG 탱크로리의 누출시 대피하여야 하는 거리는 561 m 이상으로 설정하는 것이 필요하다고 판단된다.

Keywords

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