Tome Architecture and management of a geological repository - Andra

Contents5.6.1 Siting the disposal tunnels ..................................................................................1395.6.2 Constructing a disposal cell ................................................................................1415.6.3 Reversible operation of a disposal cell ...............................................................1435.6.4 Risks associated with B waste package emplacement in the cell .......................1485.6.5 Closing the structures..........................................................................................1515.7 Functions of the repository components over time.....................................................1536 C waste repository zone...........................................................................................................1586.1 Primary C waste packages............................................................................................1596.1.1 Glass packages from former productions............................................................1606.1.2 Vitrified waste packages from current or planned productions in theshort term ............................................................................................................1636.1.3 Future hypothetical packages..............................................................................1636.1.4 Production scenarios ...........................................................................................1636.1.5 Throughput hypotheses for primary package reception......................................1646.2 Safety options for the design of a C waste repository.................................................1646.2.1 Harnessing the favourable properties of the granite medium .............................1656.2.2 Designing engineered components that are complementary andredundant to the granite medium ........................................................................1676.2.3 Limiting disturbances to the granite by the repository........................................1696.3 C waste over-packs ........................................................................................................1706.3.1 Selected design principles...................................................................................1706.3.2 Description and dimensioning ............................................................................1706.3.3 Manufacturing techniques...................................................................................1726.4 The disposal cells............................................................................................................1756.4.1 Description of a disposal cell..............................................................................1766.4.2 Description of a handling drift............................................................................1786.4.3 Distance between handling drifts........................................................................1796.5 Architecture of the C waste repository zone ...............................................................1796.5.1 Dimensioning elements of a repository module .................................................1796.5.2 Description of a repository module.....................................................................1806.5.3 Assessing the number of C waste modules.........................................................1816.6 Disposal process as part of the reversibility rationale................................................1826.6.1 Installation of the disposal cells..........................................................................1826.6.2 Construction of the connecting and handling drifts ............................................1826.6.3 Construction of disposal boreholes.....................................................................1846.6.4 Operation of a disposal cell as part of the reversibility approach .......................1866.6.5 Risks associated with C waste package emplacement in the cell .......................1896.6.6 Closing the structures..........................................................................................1896.7 Functions of the repository components over time.....................................................1907 Spent fuel repository zone .......................................................................................................1937.1 Spent fuel assemblies .....................................................................................................1947.1.1 The different types of spent fuel .........................................................................1947.1.2 Quantification of the number of spent fuel assemblies.......................................1977.1.3 Throughput hypotheses for spent fuel package reception...................................1987.2 Safety options for the design of a spent fuel repository..............................................198Dossier 2005 granite - ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL REPOSITORY5/228