During the past ten years, selective removal of radionuclides from evaporator concentrates has been an essential part of waste management at the Loviisa NPP in Finland. Over 900 m3 of evaporator concentrates have been purified with 112 liters of highly selective ion exchange material. The volume reduction factor, comparing the volume of the original liquid to the volume of ion exchanger, is over 8,000. More importantly, comparing the volumes for final repository, the volume reduction factor for final repository is 1,550. This volume reduction, added to the avoidance of cementation of the original concentrates, results in very important economic savings.

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