The main purpose of this nation-wide lineament study of whole Finland is to identify potential brittle bedrock structures. The source data used for the interpretation are a light detection and ranging (LiDAR) -based hillshaded ground elevation model, a seabed elevation model (bathymetry) and several aerogeophysical rasters. The data can be used for a preliminary mapping of bedrock structures, such as shear and fault zones, that directly influence bedrock fracturing at a regional scale.

A Sandwich shaft sealing system consists of alternating sealing segments (DS) of bentonite and equipotential segments (ES) with a high hydraulic conductivity. Water accessing the system results in swelling of the DS. Within the ES the water is evenly distributed over the cross section of the seal. Thus, swelling is more homogeneous and seal bypass is reduced. At the Mont Terri rock laboratory, this sealing system is tested in connection with the host rock in a large-scale in-situ experiment.

The aims of the project are to confirm the long-term anaerobic corrosion rate of carbon steel and copper in compacted bentonite under repository-relevant environmental conditions. Low average anaerobic corrosion rates were measured for carbon steel and a very modest amount of alteration was identified on copper.

As national regulator within the German siting process, the Federal Office for the Safety of Nuclear Waste Management (BASE) performs own research on, e.g., geo-scientific questions, methodological aspects of the implementation of the site selection process, and public participation aspects. The results support BASE to fulfil its task according to state-of-the-art science and technology, ensure highest safety-level and are also relevant to other stakeholders of the siting process.