Posiva, the company that specialises in the disposal of spent nuclear fuel, has announced the start of excavation for a final-disposal test tunnel at the Onkalo underground research and disposal facility. Located at a depth of around 450m at Eurajoki, western Finland, the test tunnel simulates a real final-disposal tunnel. Excavation will continue until around April-May when the tunnel reaches 80m in length – which is shorter than the actual final-disposal tunnels that typically will be around 350m long. Once completed, four deposition holes will be drilled in the roof of the test tunnel for the trial.
Tunnels and Tunnelling 2nd March 2021 read more »