Reactor compartment polar crane was used to execute the procedure.

All the core internals are currently delivered to the +26.000 elevation of the reactor building. “Clean area” required for the controlled reactor assembly was arranged. The assembly will be performed by the MSU-90 first area and Mechanization and Motor Transport Department (“Titan-2” holding) specialists.

Reactor cavity is one of the core internals weighing 76 tons. Later on it will house fuel rod array with nuclear fuel. Titan-2 employees did a rollover of the cavity, i.e. put it into vertical position using the crane and lowered into the spent fuel shaft. This is required to install a 2-piece core baffle into the reactor cavity.


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.