TVO Plans a VLLW Disposal Facility at Olkiluoto Site
Teollisuuden Voima Oyj (TVO) is planning the construction of a very low-level waste disposal facility at Olkiluoto.
On 14th August 2020, TVO submitted an environmental impact assessment (EIA) programme for the plan to the Ministry of Employment and the Economy.
Similar disposal facilities have been used in other countries for a long time, but in Finland this would be the first implementation. In Sweden, for example, a similar disposal facility has been in operation since 1993.
A soil disposal facility is a structure built on the surface and consists of a waste backfill and various structural layers above and below it.
Drainage and a water collection system will also be built in connection with the bottom, with which the quality of the water seeping through space can be monitored. Waste placed on top of the substructure is enclosed in waste packages.
Very low-level waste includes, for example, protective plastics and protective clothing that have been used during maintenance outages at a nuclear power plant.
The area of the soil disposal facility is planned to be 90 x 115 m. Waste packaging is disposed of in the facility every five years, and the part of the space filled with waste is temporarily sealed.
(English translation from TVO Press Release).