ARIPAR is a quantitative area risk assessment tool used to evaluate the risk resulting from major accidents in industrial areas where hazardous substances are stored, proc-essed and transported. It is based on a geographical information system platform (GIS). This tool has already been applied to perform a quantitative area risk assess-ment in several industrial areas, and it has been demonstrated to be a very powerful tool also for managing industrial risk. ARIPAR 5.0 is the new release of the software, which embeds several new features and improvements, such as a completely new de-velopment platform based on ArcGIS and a much more powerful module for dealing with consequence assessment data. The present document represents the Reference Manual of ARIPAR 5.0, which describes all commands, dialogs, risk analysis equa-tions, input data format and reporting available in this software package.JRC.G.6-Security technology assessmen
