High-level waste disposal cell
The disposal cell for high-level waste consists of a tunnel measuring approximately 70 cm in diameter and 40 m in length. The steel over-packs containing the primary waste packages are spaced out by separators. The number of disposal packages per disposal cell, the spacing between consecutive disposal packages in a tunnel and the distance between tunnels are defined so as to ensure that the peak temperature in the argillite formation remains below 90 deg. C.