Developing economy and adoption of science and technology for everyday life have introduced many dangerous facilities inside and nearby city. In this research, we propose a real-time emergency response system against toxic gas releases, including chlorine and ammonia releases. We set up an optical sensor network in a hazardous area where intentional as well as unintentional hazardous material releases can happen. From the collected optical sensor data, we detect and analyze the type of harmful materials and their release concentrations in real time. Based on the diagnostic result, the amount of the release and its path of propagation are estimated and displayed on the GIS map.

Previous dispersion models for consequence analysis simulate only the aftermath of the releases starting from the supplied information on the source term. The proposed dispersion model based on a modified SLAB model performs the diagnosis of the source term and the simulation of the expected dispersion consequence by combining the real-time sensor data, meteorological data, and GIS data. The result of this study will improve the confidence of emergency personnel and residents living next to hazardous storage facilities by supplying the improved emergency response plan and monitoring system for various toxic gas releases.

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