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

With the help of a powerful crawler crane Manitowoc 18000 the ventilating tower section was installed to the height of approximately 70 meters. This technically highly demanding installation operation was performed by contractor companies of JSC CONCERN TITAN-2 – LLC AtomSpetsStroy and PJSC “SUS”.

The unit consists of a rigid structure with the stack mounted inside. The ventilation stack will be 100 meters high.

Installation begins with mounting of the rigid structure followed by installation of the stack inside it. Ventilation stack sections are made of steel and have a diameter of over two meters. Each section is mounted separately.

In the nearest future it is planned to complete installation of the stack up to 100m elevation. Once completed, it will be followed by weld dressing and anticorrosive treatment.


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.