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WASTE

TVO is committed to reduce the amount of waste and to promote its utilization. Radioactive waste is isolated from the organic environment until its radioactivity has decreased to a harmless level.

Radioactive waste

The waste produced at the power plant is classified as waste exempted from control, low and intermediate level operational waste, high level waste (spent fuel), and decommissioning waste according to its level of radioactivity.

Waste exempted from control contains such a small amount of radioactive substances that the waste can be reused or delivered to the Olkiluoto landfill for final disposal. Waste is produced in activities related to the operation and maintenance of the power plant. In 2017, the amount of maintenance waste exempted from control was 40.2 tons. About 68 tons of metal was also cleared for recycling.

The protective gear used in operating and maintaining the power plant, the equipment removed from the process, and the insulating materials are low level waste. They are tightly packaged and placed in the repository for operational waste (VLJ repository) located at an approximate depth of 100 meters in the plant area.

The ion exchange resins used for the treatment of the process water at the power plant are classified as intermediate level waste that is incorporated in bitumen and embedded in the operating waste repository. In 2017, 51 m3 of intermediate level waste and 47 m3 of low level waste was placed in the operating waste repository. The amount of high-level spent fuel generated during the year under review was 35.2 t. It is kept in an interim storage in Olkiluoto until it can be embedded in the bedrock of Olkiluoto for final disposal. Final disposal operations will start around 2020s. Decommissioning waste is waste produced in connection with the demolition of the power plants at the end of the operating life. The final disposal of decommissioning waste will also take place in Olkiluoto.

Radioactive waste201720162015
2014
2013
Low-level (m3) 1)
4786171590
Intermediate level (m3) 1)
519638 42
Operating waste cleared after monitoring (t)4096
504662
1) Waste disposed in the VLJ repository in 2017

Amount of spent fuel in the OL1 and OL2 storage polls and interim storage, cumulative
20172016201520142013
Number of assemblies (pcs)8,9228,7208,5188,3048,096
Assemblies (t)1.498,51,465.21,432.01,396.61,362.3

Municipal waste

TVO is committed to the reduction of the amount of waste and to the improvement of the reuse of waste. This is required of everybody working in Olkiluoto. All waste generated in Olkiluoto is sorted and processed. The sorted wastes are sent for reuse, and only wastes not suitable for reuse go to the landfill. Hazardous waste is collected in the hazardous waste storage to be sent to an appropriate waste treatment plant.

Waste suitable for recycling or reuse as energy amounts to 82 percent of the total amount of waste, landfill waste for 2 percent and hazardous waste for 15 percent. It was possible to further reduce the amount of landfill waste as the wastes valid for incineration (e.g. PVC-plastic and fireproof materials) are delivered to a waste-to-energy plant where it will be utilized in the production of district heating and electricity. The majority of hazardous waste consists of batteries and electrical waste. In 2017, the total amount of waste was 1,837 tons.

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Conventional municipal and hazardous waste (t)
OL1 ja OL2 (metric tons)
20172016201520142013
Mixed waste to energy 1)
651036188101
Landfill waste to TVO's landfill
4145547841
Paper and cardboard
5074909969
Energywaste
132114948677
Biowaste
5064655551
Wood
99675993710
Metal
107779985157
Cable refuse
8711714
Glass   
55234
Crushed brick and concrete   
000025
Screening
7961723519
Hazardous waste
626472
102137  
Sludge 2)
933807555597
1,142
1) Since 2017 mixed waste has been delivered to a waste-to-energy plant where it will be utilized in the production of district heating and electricity.
2) Sludge from waste water treatment plant, (solid matter 8-10 %, is not counted into the total waste amount)


OL3 (metric tons)20172016201520142013
Mixed waste to energy 1)
1681187093210
Landfill waste to TVO's landfill
0445468170
Paper and cardboard
3143332747
Energywaste14013898110297
Biowaste5335373643
Wood
214188183205429
Metal
27513858
328 
369
Cable refuse
326551
16
12
Crushed brick and concrete
02010 
50612
Cable drums
5210
1221
Hazardous waste
221114146109103
1) Since 2017 mixed waste has been delivered to a waste-to-energy plant where it will be utilized in the production of district heating and electricity.