en.Wedoany.com Reported - Rosatom has commenced concrete pouring for the reactor shaft of Unit 4 at the Leningrad Nuclear Power Plant-2 (Leningrad NPP-2). The construction team plans to complete the first five tiers of the shaft within the next three months, reaching a total height of over 9 meters. This vertical reinforced concrete structure will ultimately exceed 34 meters, housing the nuclear reactor and the unit's safety system equipment.

The first phase of construction is expected to consume 175 tons of steel reinforcement and 612 cubic meters of concrete mix. Given that the shaft must bear additional protective functions during operation, special heavy concrete will be used to ensure structural strength, durability, and radiation resistance.

Rosatom revealed that various equipment will be gradually installed in the reactor shaft. The first critical safety system to be installed is the housing of the core melt localization device, with this "core catcher" scheduled to arrive at the site in early July and be installed within the same month. The installation of the reactor itself is expected to begin in the second half of 2029.

Units 3 and 4 of Leningrad NPP-2, equipped with VVER-1200 reactors, are planned to commence operation in 2030 and 2032, respectively. Rosatom stated that these new units will replace the aging RBMK-1000 units.

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