An ontology-based approach to vulnerability and interdependency modelling for Critical Infrastructure systems

The systematic and complete identification of meaningful accident scenarios for Critical Infrastructure is still one of the major challenges to achieve higher resilience performance. THREVI2 project has been designed to answer this need by developing a comprehensive and multi-dimensional all-hazards catalogue for CI. Specific objectives are: to develop and elaborate three coordinated ontologies (Hazards & Threats, CIs topologies, CIs Interdependencies); to merge them by existing vulnerability models; and to develop a dedicated software tool for scenarios generation to support different end-users (e.g. authorities and operators). THREVI2 ontologies have been developed by a joint implementation of different methodologies: literature review, experts' review, basic ontology development methodology, and a final pilot testing of the tool. The main results achieved are generalised and standardised: i) specification framework for CIs and services; ii) all-hazards catalogue for CI. The developed SW tool offers an improved scenario generation process to support CI risk assessment.