(54ds) Using Aloha to Establish Potential Risk Areas and Verified with Actual Incidents for Toxic Chemical Operation in Taiwan—a Case Study in Middle Taiwan

ALOHA had been used to simulate the possible influencing areas after one-hour dispersion as the consequence analysis for chemical operation locations. We had adopted the methods as one of the prevention measures in the emergency response plan for operating toxic chemical substances in Taiwan. This study aimed at establishing risk areas by ALOHA for some factories operating toxic chemical substances in the middle Taiwan, Taichung, Changhua, and Nantou counties. The data combination of ALOHA simulation and Super GIS had established a hazard analysis graph that could evaluate the potential risk, hazards and impacts for leaking hazardous material (HAZMAT) incidents. Furthermore, those results were verified with hazardous material incidents from 2012 to 2016 and analyzed statistically. Those risk graphs were further verified with the GIS analysis to examine those risk areas and the needs during the emergency response and preparedness measures. The consequence analysis by ALOHA and risk evaluation was combined and verified practically through the GIS analysis to understand the effectiveness of consequence analysis and their practical uses.