Indicators of Radioecological Sensitivity of contaminated territories: a proactive and participatory research approach

摘要

Financed partly by the French ministry in charge of environment, PRIME is a participative researchcoordinated by IRSN. The aim is to develop with stakeholders and experts a prospective method to build amulticriteria decision tool for ranking specificities of territories which identifies its vulnerability in case of nuclearaccident. The method is elaborated through the participation of experts, decision-makers and local actors in orderto enable the risk managers to choose the appropriate strategy in case of an accident involving radioactivesubstances. The method establishes the hierarchy of factors of the sensitivity of a territory to radioactive pollution.The studied zone is situated within the radius of about 50 km around three nuclear sites in the South of France.The main questions of this project are the following: Does the sensitivity of the territory of 50 km radius around anuclear site depend only on the distance from the source or, alternatively, can it vary depending on the type andthe use of the soils? Which criteria are important for the people living in the area and how are they balanced?Which of them would be particularly useful for decision-making? Can the multi criteria method be an appropriatetool to treat the data and make them visible and accessible?The characteristic of the project is to combine different opinion of the vulnerability of a territory in a participatoryapproach. The first step is to identify, alongside with stakeholders, the factors of the sensitivity of a territory and toestablish correlation between them. The second step is to provide the managers and people who have to decide insuch case with data necessary for working out the preparation and action plans for rationalizing the decisionmakingin the field of post-accidental management.As expected results, we hope to simplify the representation about territorial consequences of radiologicalcontamination and to elaborate management tools common for different actors who a priori speak different“languages”, tools showing the evaluation of radio ecological sensitivity of a territory for further exploration. Wewill also share the main findings concerning the way to manage such a challenging social process.