Visualization system design and implementation to accident risk caused by domino effect

Large number of Major Hazard Installations(MHIs) are lay out into two-dimensional spatial distribution in chemical industry complex. It is easily to trigger the domino effect which leads to more serious consequence. By the combination of the tools Delphi, MapInfo, MapX, Matlab, Microsoft Access and computer graphics, the visualization system of accident risk caused by domino effect in chemical industry zones based on GIS is developed. According to the analysis process of domino effect, the numerical algorithms and rendering algorithm are established to achieve the calculation of escalation parameters, determination of escalation probability, analysis of consequence and demonstration of risk cloud figure. By the use of the system, the efficiency and accuracy are improved to the analysis process of domino effect in chemical industry zones.