옥내 누출로 액체 풀에 의한 폭발성 가스 분위기 형성시 폭발위험범위 계산에 적합한 증발량 퍼센트(%) 선정에 관한 연구

초록

Businesses handling chemical substances must establish fundamental measures in advance to prepare for accidents caused by hazardous materials, such as leaks, fires, and explosions, due to the significant risks they pose. The categorization of explosive hazardous areas is an integral part of these safety measures. In this study, we observed changes in the explosive hazardous area based on variations in ambient temperature and the evaporation percentage(%) resulting from a 200L leakage of toluene, benzene, and acetone stored in indoor tank storage. Toluene and benzene share the same lower explosive limit(LEL, %vol) and have similar densities. However, differences in vapor pressure lead to distinctions in the explosive hazardous area. Benzene and acetone appear to be influenced by both LEL(%vol) and vapor pressure when calculating the explosive hazardous area. In the future, refining criteria based on vapor pressure and LEL(%vol), and analyzing and evaluating the explosive hazardous area within the facility according to the evaporation percentage(%), is anticipated. This approach aims to propose an applicable and appropriate evaporation percentage(%) for calculating the explosive hazardous area.

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