DEVELOPMENT OF TECHNOLOGIES FOR HANDLING LIQUID RADIOACTIVE WASTE OF NUCLEAR POWER PLANTS

The paper presents the results of a feasibility study focused on two methods designed to treat evaporator bottoms generated from the evaporation of liquid radioactive waste (LRW) at nuclear power plants (NPP), namely, deep evaporation (DE) and ion-selective decontamination (ISD). ISD method proved to be much more efficient and costeffective compared to the DE one due to a drastic reduction of the conditioned radioactive waste volume intended for disposal. The paper also considers possible opportunities for upgrading particular ISD stages. It provides recommendations on how to upgrade LRW treatment technologies at NPP of a new generation, including separated collection of basic LRW types and development of in situ RW processing and conditioning flowsheets.

Keywords: radioactive waste, NPP, evaporator bottoms, deep evaporation method, ion-selective decontamination method, operating costs.

Penzin R. A, Svitsov A. A. Development of Technologies for Handling Liquid Radioactive Waste of Nuclear Power Plants. Radioactive Waste, 2020, no. 4 (13), pp. 90 — 98. (In Russian). DOI: 10.25283/2587-9707-2020-4-90-98.