Experiments at the Grimsel Test Site

The geological situation at the Grimsel Test Site (fractured, water-bearing and homogeneous rock zones) offers ideal conditions for carrying out a wide range of experiments. Today, the focus is on the performance and safety of the engineered and geological barriers of a deep repository. Projects at the GTS are investigating disposal concepts on a 1:1 scale. A controlled zone in the laboratory allows radionuclides to be used to test models of the transport of radioactive substances.

Detailed information on the experiments: www.grimsel.com (in English)

The tunnel system of the Grimsel Test Site.

The abbreviations indicate a selection of test locations.

• FEBEX 1:1 Demonstration of the emplacement concept for high-level waste (brochure, pdf 980 KB)
• PSG Determining pore space geometry in the rock matrix
• GMT Gas transport through the engineered barriers and surrounding geosphere (brochure, pdf, 1.9 MB)
• CRR Retardation of colloids and radionuclides (brochure, pdf, 544 KB)
• HPF Hyperalkaline plume in fractured rock (brochure, pdf, 1 MB)
• CFM Formation and transport of colloids and radionuclides
• LTD Long-term diffusion of radionuclides