At present, liquid and solid radioactive waste generated during NPP operation is treated at the conditioning facilities of NPP and stored in special storages of liquid and solid radioactive wastes.
Purification of all types of waters delivered to special water treatment facility №3 is carried out in order to recycle the water in plant process.
After conditioning, still bottom is directed to the installation of deep evaporation UGU-1-500 for further concentration. This installation is designed for treatment of liquid salt concentrates (still bottoms) that are formed in the process of evaporation of radioactive drainage waters of Water treatment facilities of KhNPP. The output salt concentrate – molten salt after UGU-1-500 is placed into metal 200-l containers-drums where it is cooled generating solidified still bottom.
The product of centrifugation is dewatered filtering material and sludge loaded into drums and stored in cages of Solid Radioactive Waste Storage Facility (SRWSF) compartments.
The solid radwaste is generated mainly upon the completion of preventive and corrective maintenance at the plant. Wastes are sorted by their aggregative state (solid or liquid) and by their activity (contaminated and non-contaminated). Contaminated wastes are sorted by groups of activity. Damp wastes are dried in place of generation; they are sorted and packed according to their activity. Packed wastes are transported to temporary waste storage. Plant-generated waste is transferred in shipping casks on a special vehicle from the locations where it is collected to the SRWSF, Special Auxiliary Building. Mass, activity, accounting of radwaste including their registration in accounting log and database in SRWSF, Special Auxiliary Building, then the wastes are unloaded from shipping cask into the cell.