The activity was performed through the open roof of the building.

First, deaerator weighing approximately 17 tons was moved from horizontal to vertical position with a tower crane. Then it was lifted and installed to the design position at the +8.400 elevation of the auxiliary building through the lock. Once the deaerator is fixed on the foundation slab, the process systems pipelines will be installed and connected.

Deaerator is intended to mix demineralized water with boron concentrate. This water is feeding the first circuit of the reactor.


Titan-2 Holding is the largest in the North-West group of companies, constructing the most important nuclear industry and power facilities. The company performs a full range of construction and installation works from engineering to commissioning.

Titan-2 Holding is the general contractor for the construction of the Leningrad NPP-2 power units. The Holding Companies perform all the civil, installation, and electrical works at a construction site. The works are carried out in the reactor, turbine, power supply, water supply, heat cogeneration buildings and other power unit structures.