Coupling GIS and Multi-Criteria Modeling to Support Post-Accident Nuclear Risk Evaluation .

Mercat-Rommens Catherine , Salem Chakhar (1) , Eric Chojnacki (2) , Vincent Mousseau (3)

1 LAMSADE - Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision
2 IRSN - Institut de Radioprotection et de Sûreté Nucléaire
3 LGI - Laboratoire Génie Industriel - EA 2606

In case of an accident concerning a nuclear installation, two intervention phases are distinguished: an emergency phase which calls for a rapid and organized response through intervention plans, and a post-accidental phase in which postponed actions are carried out on medium and/or long-term so that the situation comes back to a state judged as acceptable by stakeholders. The PRIME project has developed a decision aiding tool for risk managers involved in an industrial accident involving radioactive substances, through the evaluation of radio-ecological sensitivity of a territory in a post-accidental phase. The proposed decision aiding tool is grounded on the integration of Multiple Criteria Decision Aid (MCDA) and a Geographical Information System (GIS). The proposed methodology relies on the concept of decision map which corresponds to a planar subdivision of the territory in which each subdivision is evaluated on the basis of several criterion maps. This results in a set of disjoint spatial units evaluated on an ordinal scale using the ELECTRE TRI method. Hence, the result is a decision map representing the radio-ecological sensitivity of the territory; such maps prove to be very useful for stakeholders to design relevant post-accidental strategies.

Domaines: Recherche opérationnelle [math.OC]

Mercat-Rommens Catherine, Salem Chakhar, Eric Chojnacki, Vincent Mousseau. Coupling GIS and Multi-Criteria Modeling to Support Post-Accident Nuclear Risk Evaluation .. Evaluation and Decision Models with Multiple Criteria: Case Studies, Springer, 2015, 10.1007/978-3-662-46816-6. ⟨hal-01472185⟩