In a day, specialists of Mechanization Department of JSC Metrostroy concreted the dome part of a structure at a level mark +70,200. In total 120 cubic meters of concrete have been run. A tower crane lifted Concrete mix in special vessels to the reactor dome. As this type of concrete has special characteristics, in particular high harshness, it was necessary to run it continuously.

Work was conducted in shifts by teams of eight people. In total more than hundred people work in one shift on the reactor dome now. Apart from concreting the dome, specialists of JSC Metrostroy are engaged in covering four tanks of the passive heat removal system.

Concreting of the external containment marks completion of work on monolithic structures of the reactor building. Experts will need only to fix permanent railing and to close assembly apertures.

In future when the power unit is going into operation the external reactor containment will ensure its safe operation, protect it from natural and technogenic external impacts, including earthquakes, hurricanes, plane crashes. In this regard special strong reinforcement and high-grade concrete are used for construction of external containment.


The Holding “Titan-2” is the largest in the North-West group of companies, erecting the most important objects of the nuclear industry and energy. The organization performs a full range of construction and installation works from engineering to commissioning.

The Holding “Titan-2” is one of the main contractors for the construction of power units No. 1 and No. 2 of the Leningradskaya NPP-2. Main organizations of the company perform 30% of general construction and 80% of installation works on the site. Specialists of the holding are engaged on the objects of the Leningradskaya NPP-2 first and second power units. The works are being performed in the buildings of the reactor, turbine, electricity, water, heating system and other structures of power units.