The radioactive waste to be treated in the low and intermediate-level waste processing building can take different forms.
Solid compactable waste
This waste is contained in 100 litre drums and is compressed into small packages. These go into a larger drum, surrounded by a layer of about five centimetres thick concrete. This concrete blocks most of the radiation and ensures that no radioactive substances can get out of the container during storage. If the radiation level in these concrete drums is too high, they are placed in a concrete container. This concrete container is about twenty centimetres thick and blocks more radiation.
Solid non-compactable waste
Due to the composition of the waste (steel or a lot of plastic material), it must not or cannot be compacted. Drums containing this type of waste are directly placed in a larger drum and encapsulated in concrete.
These are stored together in a source collection vessel and encapsulated in concrete.
We use two different routes for the processing of this waste. We can burn organic liquids in an incinerator where the gases are filtered. These filters are then processed as solid compactable waste since they contain the dust particles. Inorganic liquids are removed from the solid radioactive substances by means of biological cleaning and microfiltration. The remaining slurry is dried to a solid mass and then processed as solid, compactable waste.
These are radioactive objects that need to be reduced in size before they can be further processed. This process takes place in a special shredding room. After the size reduction, the waste is placed in a container for compactable solid radioactive waste and further processed.