GIS based Chemical Disaster Management Dennis Paul GIS Manager Intelligent Decisions Systems India(P) Ltd, India Email: dennispa@idsigis.com Vibin Priyesh General Manager Intelligent Decisions Systems Indis (P) Ltd Email: vibin@idsigis.com Chemical industry plays a crucial role in meeting the daily needs of the common man, but also contributes significantly towards industrial and economic growth of the nation. The industry, including petro-chemicals, and alcohol-based chemicals, has grown at a pace outperforming the overall growth of the industry. Hazardous materials are chemical substances, which if released or misused, can pose a threat to the environment. These chemicals are used in industry, agriculture, medicine, research, and consumer goods. As many as 500,000 products pose physical or health hazards and can be defined as “hazardous chemicals.” Bhopal is the site of the greatest industrial disaster in history. On the night of December 23, 1984, a dangerous chemical reaction occurred in the Union Carbide factory when a large amount about 40 tons of Methyl Isocyanate (MIC), poured out of the tank for nearly two hours and escaped into the air, spreading within eight kilometers downwind, over the city of nearly 900,000. Thousands of people were killed (estimates ranging as high as 4,000) in their sleep or as they fled in terror, and hundreds of thousands remain injured or affected (estimates range as high as 400,000) to this day. A GIS based Emergency Planning and Response System will help in identifying the Hazard prone industrial pockets. Emergency prevention and preparedness is a complex issue, and industrializing countries need to address the matter as an integral part of a larger sustainable development agenda. GIS mapping and analysis of facilities, vulnerability zones, and critical care facilities will help to know of the resources that are available at the time of a disaster. GIS can display "real-time monitoring" for an emergency early warning