Specialists have completed the installation of the first tier of the internal containment (IC) of the reactor building at the under-construction power unit No. 3 of Leningrad NPP-2. This operation became a key construction milestone in 2025.
The installation of the structure, 10 meters high and 44 meters in diameter, weighing 227 tons, took eight hours. Preparations for the work took several months, using the experience of building previous power units. The IC ensures the tightness of the reactor building and is one of the main safety systems. In the near future, the tier will be welded to the horizontal cladding, and cable penetrations for pipelines and electrical cables will be laid.
Together with the general contractor, we carefully worked out all stages of the upcoming operation, and also used the experience of constructing the previous two units in terms of engineering solutions. As a result, the complex technological lift at power unit No. 3 was completed with high quality, and the lower tier of the IC with equipment weighing a total of 227 tons was installed in its regular place safely and with pinpoint accuracy.
According to Konstantin Khudyakov, Program Director of JSC "Concern TITAN-2", the work was completed on time, and this year the construction of an external containment structure will begin to protect the reactor from external influences.
Leningrad NPP-2 is a branch of JSC "Concern Rosenergoatom". Power unit No. 3 with a VVER-1200 reactor is being built to ensure a stable power supply to the region. The next stages of construction include further assembly of protective systems and preparation for the unit's commissioning.
Read more on this topic:
Russia will help Turkey reach a new level: Erdogan praised the commissioning of the Akkuyu NPP
Now on home
Start of deliveries scheduled for 2027
Over 51,000 new motorcycles were sold in Russia in 2025
The car will take at least a year to assemble
The application's audience has reached 20 million users
The model will be included in the list of cars for taxis, price - from 2.25 million rubles
All parking lots of the "Administrator of the Moscow Parking Space" are connected to the service
The cars will be supplied to the Moscow Transport Service Directorate
Deliveries to India may begin in 2028
The technology provides automated search for all types of defects in power units
The plane flew 500 km, accelerating to 425 km/h
The plant stated that the information about the termination of purchases for models 6 and 8 is not true
Scientists are using the "Ekran-M" installation