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A Study on the Development of Calculation Tables and Formulas for Determining Separation Distance in Case of Cl2・HF Tank-lorry Leakage

염소・불화수소 탱크로리 누출사고 시 이격거리 산정을 위한 산정표 및 산정식 개발 연구

  • Received : 2021.02.25
  • Accepted : 2021.04.02
  • Published : 2021.04.30

Abstract

Chemical accidents caused by transport vehicles account for 20% of all chemical accidents every year, but there are difficulties in the accident-response process due to repeated situations where the impact assessment information is unknown. In this study, we developed a calculation table and formula for predicting the range of damage for chlorine and hydrogen fluoride, which have a high domestic usage, high risk of accidents, and high accident frequency in the last 7 years. The calculation table is based on the leakage rate, wind speed, and temperature, and the calculation formula was derived using R software for special situations where it is difficult to apply the calculation table. The calculation table and formula could be used on site by related organizations to obtain important information for decision making, which could help in minimizing damage from chemical accidents, setting separation distances, and deciding to evacuate residents.

운송차량에 의한 화학사고는 매년 전체 화학사고의 20 %를 차지하지만 영향평가 정보를 알 수 없는 상황이 반복되어 사고대응 과정에서 어려움을 겪게 되는 문제점이 존재한다. 본 연구에서는 국내 사용량이 많고 사고 위험성이 높으며, 최근 7년간 사고 빈도가 높은 염소와 불화수소를 대상으로 탱크로리로 운반하는 과정에서 누출사고가 발생하였을 경우 현장에서 이격거리 산정을 위하여 활용될 수 있는 피해예측범위 산정표 및 산정식을 개발하였다. 화학물질의 누출속도와 기상조건 중 풍속, 온도에 따른 산정표를 조사하였으며, 산정표를 적용하기 힘든 특수한 상황에서는 산정식을 적용할 수 있도록 통계 프로그램 R을 사용하여 산정식을 도출하였다. 유관기관에서는 현장에서 연구에서 도출된 산정표 및 산정식을 활용하면 화학사고 피해 최소화 및 이격거리 설정, 주민대피 결정 등의 의사결정 측면에서 중요한 정보로써 사용할 수 있을 것으로 사료된다.

Keywords

References

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