21.06.2019  The Kursk NPP Information and Public Relations Department

The foundation concreting for the 2nd VVER-TOI power block’s reactor-auxiliary building has been completed at the Kursk NPP-2 ahead of schedule

On June 20, 2019, the foundation concreting for the 2nd VVER-TOI power block’s reactor-auxiliary building was completed at the Kursk NPP-2 construction site, which was 59 days ahead of schedule. Over 6 thousand cubic meters of concrete have been placed into the foundation plate.

The reactor-auxiliary building houses the first circuit utility modules, the radioactive gas processing and special water treatment facilities, waste recycling systems, and ventilation facilities for the controlled access zone.

‘When building the Kursk NPP-2 power blocks, we followed the industrial pre-fabricated large-block construction methods with serial production of ready-to-go enforcement blocks and pre-assembly. This method helps us reduce efforts and time’, Alexey Buldygin, the head of the capital construction unit at the Kursk NPP-2, said.

All in all, the construction workers are to place over 167 thousand cubic meters of concrete at 28 construction facilities throughout this year.

Currently, the reactor building’s tendon gallery flooring is being concreted at the 1st power block construction site. The first power block’s turbine hall ground-level wall plates reinforcement is next on the to-do list.

The goal of the modern VVER-TOI project is to make Russian technologies competitive on the international scale and is aimed at serial construction of VVER-TOI reactor type NPPs both in Russia and all over the world.

It is important to note that recently the European electricity producers organization has announced that the innovative VVER-TOI project complies with the applicable European Utility Requirement (EUR) standards.


The Kursk NPP-2 is a replacement power plant encompassing 2 blocks with the capacity of 1255 megawatt each. The plant is constructed following the VVER-TOI project (general designer – AO Atomenergoproyekt (a part of the ASE Group), general contractor – ASE Group). The Kursk NPP-2 replacement power blocks No.1 and No.2 are being constructed based on the cutting-edge VVER-TOI (Water-Water Energy Reactor Universal Optimized Digital) project. This is a new design created by Russian specialists based on the VVER-1200 NPP technical solutions. These 3+ generation power blocks possess improved technical and economic parameters: compared to the previous-generation power blocks (VVER-1000), the capacity of each has been increased by 25%, up to 1255 megawatt. The major equipment’s life span has doubled. Compared to other power blocks, the VVER-TOI projects stipulate considerable reduction of construction and operational costs as well as the time lines. This design also combines passive and active safety systems. In particular, VVER-TOI includes a core melt localization device as one of the means of controlling accidents outside of the design. This is a unique Russian safety technology that guarantees safety management.

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