Demonstration experiments

Demonstration experiments show the feasibility for a future deep geological repository for radioactive waste and the thermal-hydraulic-mechanical (THM) response of Opalinus Clay. These experiments are carried out on large scales, e.g. 1:1, and over monitoring periods of 10 years or more.

Demonstration experiment: A researcher moves on a skid next to the measuring instruments
Demonstration experiment

Procedures for storing waste containers are tested using demonstration experiments. These experiments contribute evidence for the feasibility of a geological deep repository. The FE experiment represents a further development of the EB experiment (see illustration below). On a 1:1 scale, the FE experiment tests the storage design for spent fuel elements by simulating the effects of heat arising from the radioactive decay of the elements. Over a period spanning several years, investigators observe how the backfill materials and the surrounding rock behave under the effect of various temperature conditions. Demonstration experiments like these are also suitable for giving visitors a graphic explanation of the concept of deep storage.