en.Wedoany.com Reported - On June 18, concrete pouring work began for the reactor shaft of Unit 4 (VVER-1200 reactor) at the Leningrad Nuclear Power Plant. Over the next three months, construction workers will complete the first five levels of the shaft, with a total height exceeding 9 meters. The final height of the shaft will surpass 34 meters, and it will house the nuclear reactor and safety equipment, along with measurement channels and sensors for monitoring radiation levels, air temperature, and structural conditions.
Yevgeny Milushkin, Deputy Director of the Leningrad Nuclear Power Plant, stated that the shaft will be built in stages with simultaneous equipment installation. The core catcher shell is scheduled to arrive at the site in early July and be installed, followed by the installation of remaining components and equipment for securing the reactor pressure vessel. The reactor itself is planned to begin installation in the second half of 2029. Konstantin Khudyakov, Project Director of Titan-2 Group, noted that the first phase of shaft construction requires 175 tons of steel reinforcement and 612 cubic meters of specially formulated high-strength concrete, with shaft wall thicknesses ranging from 1700 to 2200 millimeters to ensure structural strength, durability, and radiation resistance.
The Leningrad Nuclear Power Plant, located in Sosnovy Bor, Leningrad Oblast, is one of Russia's largest nuclear power plants, with a total installed capacity of 4,400 MW. It currently operates two VVER-1200 units. Units 3 and 4 of the second phase both use VVER-1200 reactors and are planned to be commissioned in 2030 and 2032, respectively, replacing the existing RBMK-1000 units. Each VVER-1200 unit generates over 8.5 billion kWh of electricity annually, providing clean energy to the northwestern region of Russia. Titan-2 Holding Company is the general contractor for the second phase.
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