Major construction work progresses on Posiva's ONKALO worksite
Major construction work progresses on Posiva's ONKALO worksite, both in underground facilities and above ground in encapsulation plant. The excavation of the first five actual final disposal tunnels was completed in the underground repository just before the Mid Summer's Day in June. The Deposition Hole Boring Machine arrived from Germany in June and the first deposition holes have already been bored.
On the outside, the encapsulation plant looks already almost finished.
On the above-ground worksite, the handover of the encapsulation plan building from Skanska to Posiva took place in late May. The project has since continued with installation of various equipment. The arrival of the welding station and its transfer to the installation site was one of the most impressive examples of equipment installation works at the turn of October to November. The installation of the drying station for spent nuclear fuel was wrapped up at about the same time in the fuel handling cell. The final disposal of spent nuclear fuel in Olkiluoto by Posiva is scheduled to start in mid-2020s.
Text Pasi Tuohimaa
Photos Tapani Karjanlahti, Markus Forsberg, Pasi Tuohimaa