(148g) A Graphical Approach for Representing Hazard Scenarios

This paper describes ?hazard scenario graph? or HSG which is a visual representation technique for performing hazard identification. HSGs explicitly represent all the intermediate and final consequences in the scenario. HSG is based on ontologies and knowledge representation techniques with which knowledge extraction is possible. The method explicitly represents causality, substances, equipment, physical and chemical transformations, plant operations and personnel, facilitating the integration with other engineering tools such as CAD systems.