ONKALO – the planned repository in Finland

Posiva Oy is constructing the ONKALO characterisation tunnel in Olkiluoto. Research conducted in the tunnel will verify the suitability of the Olkiluoto bedrock for final disposal.


ONKALO, excavated for research purposes, will be joined as part of the final disposal facility in the future. Therefore, ONKALO construction and design will take into account the requirements set for the final disposal facility.

For more information please visit: http://www.posiva.fi/en/final_disposal/onkalo#.Vl_uexs8JaQ