The total weight of the reactor vessel is about 160 tonnes and the welding process was completed within 12 days. Following heat treatment, the structure was inspected and specialists will now apply internal corrosion-resistant surfacing in the welded area.

First concrete for Kursk II unit 1 was poured in April 2018, and that for unit 2 in April last year.

The 1255 MWe VVER-TOI is a Generation III+ power unit was developed using technical results from the VVER-1200 project. The design offers improved safety measures, including an increased margin of safety from extreme impacts and ability to withstand earthquakes, and is equipped with modern control systems and diagnostics.