Reversibility and retrievability, a proposal for an international scale

The concept of reversibility was introduced in France with the 1991 act. It was thoroughly considered through the Dossier 2005 reporting the results of the 15 years research performed in France, and then was again clearly mentioned as a specific request in the 28 June 2006 Planning Act. In the same time, reversibility and/or retrievability are being discussed in a number of countries, often considered in the the process towards reality for a geological disposal facility. Communication with stakeholders thus becomes a decisive part of the process. ANDRA suggests developing a Reversibility-Retrievability scale at international level, as a communication framework to describe various national approaches. (authors)