Architecture and management of a geological repository - Andra

11 – Operational Safety11.8.1.4 Lessons learned from the demonstration model drop testsThe first drop tests of demonstration model B2.1 and B5.2 carried out show that the disposal packageswere damaged but retain their mechanical integrity.- Demonstration model B2.1 after the fall (cf. Figure 11.8.2), shows the crushed corner of the lidrevealing some of its reinforcements. The reinforced lid absorbed the greatest part of the energyrelated with impact while the body of the demonstration model itself shows little visible damage.Although the interface between the container and the lid is cracked, both elements remain joined(thanks to the tie rods provided for this purpose).- Demonstration model B5.2 (cf. Figure 11.8-2), absorbs the energy during impact to the corner andlateral surfaces. Diagonal cracks leading from the impacted corner and are visible. As regards thelid, it has fine cracks around the concrete plugs cast above the primary package housings.Figure 11.8.2Appearance of the demonstration model after the drop (left, demonstrationmodel B2.1; right, demonstration model B5.2)Coefficient of deformation in %Figure 11.8.3Comparison between simulation and fall test in the case of the primary packageclose to the impacted corner of demonstration model B5.2DOSSIER 2005 ARGILE -ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL DISPOSAL SYSTEM480/495