Article

Amphos 21 is conducting advanced groundwater chemistry modelling for Posiva Oy, focusing on the ONKALO deep geological disposal facility in Olkiluoto, Finland. The OL-STAR project leverages the LUMI supercomputer, part of the European High Performance Computing Joint Undertaking (EuroHPC JU), to simulate groundwater behaviour over one million years.

This high-performance modelling allows for more accurate assessments of hydrogeological changes, enhancing confidence in the long-term safety of nuclear waste disposal. The project supports the viability of nuclear energy as a sustainable, low-emissions power source.