Architecture and management of a geological repository - Andra

6 – Overall underground architecture6.5.4 Examples of the preliminary sizing of the connecting infrastructuresThe preliminary sizing of the connecting infrastructures is illustrated by a few characteristic examplesin order to show the feasibility of the proposed principles.6.5.4.1 Infrastructure of the repository zone of the B waste packagesIn the B waste repository zone, the construction flows are moderate, while the package transfer flowsare more important. The disposal packages are relatively bulky and do not allow installing largesection air return ducts. The infrastructure consists of five drifts, comprising one reserved for air returnand smoke removal, two for construction and two for package transfers.Figure 6.5.1Main infrastructure of a B waste repository zone6.5.4.2 Secondary infrastructure of the repository zone of the C waste packagesIn the C waste repository zone, the construction flows are important, while the package transfer flowsare less important. The size of the packages and their transfer cask is relatively small, and all the driftscan be equipped with air return and/or smoke removal ducts. An air return drift is not necessary. Theinfrastructure consists of four drifts, comprising three reserved for construction and one for packagetransfers.Figure 6.5.2Secondary infrastructure of a C waste repository zoneDOSSIER 2005 ARGILE -ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL DISPOSAL SYSTEM280/495