Tome Architecture and management of a geological repository - Andra

4 - General architecture of the repository in a granite mediumAt a later stage of the project, the fire risk will have to be specifically examined, given its influence onthe design of the installations, to ensure that recommended solutions achieve suitable safety conditionsfor evacuating personnel.The risks relating to waste packages are essentially radiological risks. They are inherent to therepository operating activity, and to a lesser degree to the closure activity. These risks could becombined with exposure to radiation (radiological protection defects, interventions close to aradioactive source, etc.) in addition to fire or fall affecting the packages themselves. The provisionsenvisaged that have the benefit of feedback from similar industrial installations, should enable theserisks to be managed.The risks relating to the repository environment (earthquake, meteorological conditions, aircraftcrashes, etc.) that would be assessed on the basis of usual practice in French nuclear installations,taking into account the local characteristics of the site retained for the repository, do not appear toraise specific difficulties.At this stage the analysis conducted on operational safety has not revealed any elements that wouldundermine the technical feasibility of repository construction, operation and closure with its reversiblestaged management (including in particular the possibility of back-tracking).Dossier 2005 Granite - ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL REPOSITORY93/228