Some Consideration on the Effect of the Configuration of the Dike to the Atmospheric Dispersion of Leaked Bromine

Abstract

To reduce risk in chemical plants, preventive measures must be incorporated into the design. In the case of a leak of a highly toxic substance, detection and isolation, prevention of spread, and suppression of effects are possible methods. In the previous studies, the diffusion behavior of substances with small specific gravity and water solubility has been studied, while that of substances with large specific gravity and non-water solubility has not been sufficiently studied. In this study, numerical fluid dynamics analysis was conducted to evaluate the diffusion behavior of bromine in the case of a leak and to study disaster mitigation measures, and the effects of dike dimensions and installation method on diffusion behavior were evaluated. It was found that the size of the embankment affects the distance that bromine can reach in a certain time, and that the distance of diffusion can be controlled by installing a barrier on the downwind side or by installing the embankment underground.