Lifting of «dry» protection

The structure weighing 144 tons was lifted by means of a powerful crane "Liebherr". At height, the cargo was moved over two tower cranes and lowered inside the building into the reactor shaft.

"Dry" protection is a metal cylinder. Inside the cylinder, the walls are filled with special serpentinite concrete. It possesses high radiation resistance and enables to effectively weaken streams of neutrons outside of the reactor shaft. While in service, the "dry" protection will carry out functions of the radiation-thermal screen in relation to the ordinary concrete of the shaft.

To install "dry" protection in place, specialists of  “MSU-90” have installed a metal structure inside it. After geodetic check for accuracy of installation, (the tolerance was 2 mm), the lifting device is subject to dismantling.

Afterwards, one will start works on installation of thermal isolation of the cylindrical part of the casing and supporting truss.

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.