Its role is to provide exhaust ventilation in the reactor building and all auxiliary buildings of the nuclear island. 

The delegation included representatives of the companies participating in construction of Finnish Hanhikivi 1 NPP together with JSC CONCERN TITAN-2.

Scheduled testing of the internal containment of the reactor was performed by AtomTechEnergo company. During the first testing stage the containment was vacuum pumped, followed by a sonic and visual test of the reinforced concrete structure. Tests proved air-tightness of the containment.

During second stage compressed air was fed into the containment in order to create the necessary pressure level, confirming tightness of the reactor containment.

Finnish experts were interested in the testing procedure, as well as the test results. In future they will use this experience in construction of Hanhikivi 1 NPP.

Note:

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.

With the use of crane Liebherr LR 11350 the equipment weighing over 50 tons was put down on its regular place at level   +14,500, using open-top method. 

The operation is aimed to conduct high-voltage and hydraulic tests of the equipment prior to the final assembly.