FiR1 TRIGA Mark II research reactor, which was operated in Espoo, Finland, between 1962 and 2015 is in decommissioning. The decommissioning license was granted to VTT in June 2021 by the Government of Finland, and dismantling is scheduled to commence in early 2023. The contract on decommissioning services, signed in March 2020 between VTT and Fortum, covers the dismantling of FiR1 and all necessary nuclear waste management services. The contract also covers final disposal of decommissioning waste from the research laboratory (OK3) decommissioning. OK3 is located next to FiR1 reactor and has been used for nuclear material research purposes by VTT.
Fortum’s role in the project can be divided into three phases:
- Planning and support
- Site preparation and dismantling
- Waste management
Planning and support phase consist of decommissioning site design, developing radioactive waste management process, planning of dismantling and radiation protection. Fortum has also supported in licensing and spent fuel management. Planning and support phase was completed in June 2022.
Site preparation and dismantling is expected to start in the beginning of 2023. Fortum’s responsibilities are site preparation for dismantling, implementation of radiation protection and waste management arrangements as well as all demolition works. The waste management phase consists of sorting, packing, transportation, and final disposal of the decommissioning waste.