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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

International audienceThe development of a new technology, the definition of a new regulation or an organisational change aims to increase a positive performance (i.e. safety and cost effectiveness) or decrease a negative performance (i.e. occurrence of accidents or workload) in a system. However, change can also be the origin of consequences that have not been anticipated during the design phase. Such consequences can be positive, negative or damaging for the system. Consequently, an assessment phase is often integrated into technical, regulatory or organisational design activities. This assessment phase is generally structured with hazard identification and risk assessment steps that are followed by a cost benefit analysis and formulation of recommendations. The IMPACT project aims to extend the scope of the hazard identification phase generally based on traditional failure analysis methods (i.e. FMEA, THERP) by integrating stakeholder expertise and applying resilience engineering approaches of safety management. The project has also tested the possibility to use a cluster of bridge simulators together with a system for data collection and visualization in order to explore the consequences of change in maritime settings

International audienceSystem thinking concepts and simulation tools are used to model the risk prevention plan and operational modes designed to enforce safety constraints at a French liquefied petroleum gas (LPG) storage and distribution facility. In France, such facilities are classified and the subject of special legislation and safety regulations. Their supervision is the responsibility of a control and regulatory body. A technological risk and prevention plan is provided, where all the dangerous phenomena likely to occur in addition to the safety control measures are listed in the safety report. Safety is therefore addressed through rules, and control mechanisms ensure that the system complies with safety constraints. Taking this facility as a case study, we use the STAMP theoretical framework together with AnyLogic simulation software to model technical elements and human and organizational behavior. We simulate how the system evolves over time and the strategies that are deployed in a loss of control scenario. The aim is to assess whether the prescribed safety program covers all of the system's phases; namely operations and audits. The results enrich other research that focuses on the contribution of system dynamics to risk analysis and accident prevention