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Regulatory Expectations Concerning the Geosphere Characterization for Disposal in Argillaceous Formations


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G. Bruno1, J-Y. Boisson² and F. Besnus1, Workshop AEN "Geosphere Stability", 9-11 dec. 2003, Braunsckweig, All. 1) IRSN/DSU/SSD, Fontenay-aux-Roses, France 2) IRSN/DEI, Fontenay-aux-Roses, France

Type de document > *Congrès/colloque

Mots clés > géologie, radionucléides

Unité de recherche > IRSN/DSU/SSD

Auteurs > BESNUS François, BOISSON Jean-Yves, BRUNO Gérard

Date de publication > 16/03/2004

Résumé

Safety recommendations on geosphere stability depend on the phase considered in the development of a disposal project. As far as deep disposal is concerned, safety generally relies on a multiple safety functions or multiple barriers concept for which each component of the repository i.e. waste package, engineered barriers and geological barrier, play complementary roles with regard to global safety. Consequently, depending on the disposal design, different types of favourable geological media can be envisaged for siting a repository. Thus, requirements on geosphere stability may be diverse when selecting a site for disposal since different options can be considered, and regulatory expectations in this field are more based on implementing a global and sound safety approach than on conforming to quantitative criteria.