Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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A Study on Determination of Range of Hazardous Area Caused by the Secondary Grade of Release of Vapor Substances Considering Material Characteristic and Operating Condition

물질특성 및 운전조건을 고려한 증기상 물질의 2차 누출에 따른 폭발위험장소 범위 선정에 관한 연구

  • Seo, Minsu (Dept. of Environmaental Technology & Safety Technology Convergence, Inha University) ;
  • Kim, Kisug (Dept. of Environmaental Technology & Safety Technology Convergence, Inha University) ;
  • Hwang, Yongwoo (Dept. of Environmaental Technology & Safety Technology Convergence, Inha University) ;
  • Chon, Youngwoo (Dept. of Environmaental Technology & Safety Technology Convergence, Inha University)
  • 서민수 (인하대학교 환경안전융함전공) ;
  • 김기석 (인하대학교 환경안전융함전공) ;
  • 황용우 (인하대학교 환경안전융함전공) ;
  • 천영우 (인하대학교 환경안전융함전공)
  • Received : 2018.03.09
  • Accepted : 2018.07.31
  • Published : 2018.08.31
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Abstract

Currently, local regulations, such as KS Code, do not clearly specify how to calculate the range of hazardous area, so the dispersion modeling program should be used to select dispersion. The purpose of this study is to present a methodology of determining the range of hazardous area which is simpler and more reasonable than modelling by using representative materials and process conditions. Based on domestic and overseas regulations that are currently in effect, variables affecting distance to LFL(Lower Flammable Limit) were selected. A total of 16 flammable substances were modelled for substance variables, process conditions variables, and weather conditions variables, and the statistical analysis selected the variables that affect them. Using the selected variables, a three-step classification method was prepared to select the range of locations subject to explosion hazard.

현재 KS Code 등 국내규정에서는 폭발위험장소의 범위를 계산하는 방법이 명확하게 나타나지 않아, 정확한 범위 선정을 위해서는 확산 모델링 해석을 이용하여야 한다. 본 연구애서는 대표적인 물질과 운전조건을 활용하여 확산 모델링에 비하여 간편하면서도 비교적 합리적인 폭발위험장소의 범위를 산정하는 방법을 제시하고자 하였다. 현재 시행되고 있는 국내외 표준을 바탕으로 폭발하한계(LFL, Lower Flammable Limit)까지 거리에 영향을 미치는 변수를 선정하였다. 총 16종의 인화성물질을 대상으로 물질변수, 운전변수, 기상조건에 대하여 모델링을 진행하였으며, 통계분석을 통해 영향을 미치는 변수를 선별하였다. 선별된 변수를 이용하여 폭발위험장소의 범위 선정을 위한 3단계 분류화 방법(3Step Classification Method)을 작성하였다.

Keywords

References

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