The “hot” tests at ISF-2 site were completed on 17 December 2020.
During the “hot” testing, ChNPP personnel performed all activities specified by the ISF-2 Commissioning Programme, namely:
• transportation of 22 transfer baskets with spent nuclear fuel (SNF) from ISF-1 to ISF-2;
• receiving of 186 spent fuel assemblies (SFAs) at ISF-2;
• cutting of 186 SFAs into fuel bundles, and placement of 372 fuel tubes with these fuel bundles into two double-walled canisters (DWCs);
• placement of two DWCs, filled with SNF, into the concrete storage modules for long-term storage over the course of 100 years;
• management of the “hot” cell’s solid radioactive waste;
• assessment of the biological shielding structures performance.


On 14 December, in the presence of the IAEA inspectors, the second double-walled canister filled with spent nuclear fuel was loaded into the concrete storage module (CSM) at ISF-2 site for long term storage. Upon the completion of the transfer and loading process, the IAEA inspectors put their seal to the loaded CSM cell.
14 December - On the Day of Honoring the Participants of the Liquidation of the Consequences of the Chornobyl Disaster – representatives of the central executive bodies visited the Chornobyl Exclusion Zone and Chornobyl NPP, including the Minister of Environmental Protection and Natural Resources of Ukraine Roman Abramovskyi, Minister of Culture and Information Policy of Ukraine Oleksandr Tkachenko, Head of the State Nuclear Regulatory Inspectorate of Ukraine Hryhorii Plachkov, accompanied by the Head of the State Agency of Ukraine for Exclusion Zone Management Sergii Kalashnyk, ChNPP's Acting Director General Volodymyr Pieskov, and ChNPP management.
On 9 December, an online meeting within the EU-funded project “Support to the Management of the Instrument for Nuclear Safety Cooperation in Ukraine” (INSC) was held on development of the Strategic Road Map for projects of the RAW Sector Working Group, with participation of the Chornobyl NPP management, as well as representatives of EC’s DEVCO, Secretariat of the Cabinet of Ministers of Ukraine, Ministry of Energy, Ukrainian Science and Technology Centre, State Nuclear Regulatory Inspectorate of Ukraine, State Agency of Ukraine for Exclusion Zone Management, SE NNEGC Energoatom, SSE Radon Association, SSE Central RAW Management Enterprise, and SSE Ecocentre.