Posiva's encapsulation plant building ready for installation of nuclear systems


The progress of the construction of the encapsulation plant is right on track in Olkiluoto. The contractor responsible for construction work as well as installation of building services, Skanska Talonrakennus Oy, handed over the building to Posiva on schedule at the end of May for installation of nuclear systems.

In May, the excavation of the first five actual deposition tunnels – which are accessed via the central tunnels – was started in ONKALO at a depth of approximately 430 metres. At the end of 2021, approximately half of the excavation work was completed. In December, the encapsulation plant reaching its rooftop height was celebrated.

A significant event in terms of the project preparation was the submission of the operating licence application to the Government in December 2021. The safety case in the operating licence application summarised decades of work towards constructing a safe final disposal system at Olkiluoto.

The encapsulation plant and final disposal facility are moving from construction and the installation of building technology to the installation and commissioning stage of systems for the spent nuclear fuel encapsulation process. The next significant step in the EKA project is starting the trial run of final disposal in 2023.

Posiva’s Annual Report 2021 has been published on 28 April 2022 in Finnish and English, and is available on Posiva’s websiteOpen link in a new tab.

For more information, please contact:
Pasi Tuohimaa, Communications Manager, tel. +358 40 544 5001.