Visualizationand risk estimation of harmful substances leakage based on ALOHA code

Air pollution caused by leakage of dangerous chemicals is a serious threat to the living world and the environment. Predicting the consequences of pollution by mathematical simulation of leakage has become an important method in the field of environmental protection. In this study, two registered accidents of leakage of chemicals on the territory of the Republic of Serbia were analysed, the leakage of hydrochloric acid and the leakage of ammonia. The areal location of hazardous atmospheres (ALOHA) model was selected together with accurate data on geographic location and meteorological conditions for simulation and evaluation of the effects of harmful evaporation on the environment, Additional analyzes of the same accidents were performed for different meteorological conditions and a comparison of the results was done.The simulation confirmed that the extent of the pollution largely depended on the type of chemical pollutantsand then on their release in given meteorological and geographical conditions