Fig. 4

An example of the multi-barrier concept for L/ILW (low- and intermediate-level waste). The wastes are placed in metal drums and immobilised with a filling of cement or bitumen. The drums are placed in larger concrete or steel containers for handling and any voids are usually filled with a cement mortar. The containers are then stacked in the disposal tunnels or caverns and any voids are usually filled with a cement mortar. Image courtesy of Nagra