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Process Hazard Review and Consequence Effect Analysis for the Release of Chlorine Gas from Its Storage Tank  

Ko, Jae-Sun (서울시립대학교 화학공학과)
Kim, Hyo (서울시립대학교 화학공학과)
Publication Information
Fire Science and Engineering / v.17, no.3, 2003 , pp. 61-73 More about this Journal
Abstract
Most of the accidents occurred from the chemical plants are related to the catastrophic gas release events when the large amount of toxic materials is leaked from its storage tank or transmitting pipe lines. In this case, the greatest concerns are how the spreading behaviors of leakages are depended on the ambient conditions such as air stability and other environmental factors. Hence, we have focused on the risk assessments and consequential analysis for chlorine as an illustrative example. As appeared in the result, Fire & Explosion Index depicted it a bit dangerous with presenting the comprehensive degrees of hazard 90.7. And as a result of Phast6.0/ALOHA, the trends of each scenario appeared considerably identical although there are some differences in the resulting effects according to the input data for the Gas Model. The consequence analysis is performed numerically based on the dense gas mode. In the future, using more correct input data, material properties, and topographical configuration, the method of this research will be useful for the guideline of the risk assessment when the release of toxicants breaks out.
Keywords
Fire & Explosion Index; Dense gas model; Hazard and operability; Pobit function; Fault tree analysis; Threshold limit values; Threshold;
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