Tome Architecture and management of a geological repository - Andra

ContentsFigure 6.1.3 Standard vitrified waste container (CSD-V).......................................................162Figure 6.1.4 AVM vitrified waste containers..........................................................................162Figure 6.2.1 JNC (Japan) designs for the disposal of C [43] ..................................................165Figure 6.2.2 Principles of installing a repository module away from water-conductingfaults....................................................................................................................166Figure 6.2.3 Switzerland – Architectural plan of a repository in the granite adapted tothe fracturing (Nagra data [45]) ..........................................................................167Figure 6.3.1 Principle of the C waste over-pack .....................................................................171Figure 6.3.2 Ingot – Piercing - Drawing .................................................................................173Figure 6.3.3 Drawing operation in a die using a mandrel and a horizontal press ...................173Figure 6.3.4 Vacuum welding chamber ..................................................................................174Figure 6.3.5 EBW process diagram.........................................................................................174Figure 6.4.1 View of a C waste disposal borehole..................................................................175Figure 6.4.2 General dimensions of C waste cells ..................................................................176Figure 6.4.3 Cross-section of a handling drift during the operating phase .............................178Figure 6.5.1 Schematic representation of a C waste module ..................................................180Figure 6.6.1 Basic surveying programme for cell installation ................................................183Figure 6.6.2 Disposal borehole in the Äspö laboratory (source: SKB)...................................184Figure 6.6.3 Operating principle of a vertical micro-tunnel boring machine..........................185Figure 6.6.4 Emplacing an engineered barrier ring (source: SKB) .........................................185Figure 6.6.5 Radiological protection cask for C waste packages............................................186Figure 6.6.6 Shuttle in a handling drift ...................................................................................187Figure 6.6.7 Basic diagram of barrel operation.......................................................................188Figure 6.6.8 Closure of a handling drift ..................................................................................190Figure 7.1.1 PWR fuel assembly.............................................................................................195Figure 7.1.2 Evolution in residual heat rating of UOX and MOX fuel assemblies.................196Figure 7.2.1 Types of cells studied abroad for a spent fuel repository....................................199Figure 7.2.2 Principle of the arrangement of a spent fuel disposal module ............................200Figure 7.2.3 Sweden: Examples of spent fuel repository architecture for two differentgranite sites .........................................................................................................201Figure 7.2.4 The Swedish KBS-3 spent fuel design (SKB data [58]).....................................202Figure 7.3.1 View of the copper envelope and an insert (source: SKB) .................................203Figure 7.3.2 Spent fuel canister. On the left the CU1 "long" (AFA - 2LE assembly) andon the right the CU2 (AFA - 2GE assembly)......................................................205Figure 7.3.3 Principles of copper tube construction 50 mm thick by extrusion......................206Figure 7.3.4 Friction stir welding process...............................................................................207Figure 7.3.5 Welding surface with an oscillating electron beam ............................................207Figure 7.3.6 Radiographic equipment for testing the electron beam weld of the coppercanister lid...........................................................................................................208Figure 7.4.1 View of a spent fuel disposal cell .......................................................................209Figure 7.4.2 General dimensions of CU cells..........................................................................210Figure 7.4.3 Cross section of a handling drift .........................................................................211Figure 7.5.1 Schematic representation of a module for CU packages ....................................213Figure 7.6.1 Radiological protection cask for CU packages ...................................................214Figure 7.6.2 Transfer vehicle ..................................................................................................215Dossier 2005 Granite - ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL REPOSITORY9/228