The SEVESEO concept is a decision-making tool to support the risk management at Seveso-II industries and other industries working with dangerous products that are posing a threat to the population and the environment within a framework using remotely sensed information.

A complete assessment of an incident involving hazardous chemicals needs a system that rapidly and accurately models the source term and the subsequent dispersion path ways of the chemical of concern through the different media (atmosphere, soil, surface water, soil water layer). This information enables operators to define risk zones and perimeters to limit the environmental impact of the accident. This information can then be used during planning and training activities to optimize the on-field deployment actions while safeguarding the safety and health of the emergency teams.

The whole management cycle of dealing with dangerous substances is a complex issue and in that perspective, decision-making instruments are essential tools to help all stakeholders concerned by an industrial accident with the means to make the right decisions likely to anticipate catastrophic events and to plan the best actions to mitigate their impact.