The whole work scope - delivery, lifting to the reactor compartment and installation of this major reactor unit equipment - was performed by JSC MSU-90 specialists (Titan-2 Holding).

Main circulation pumps electric motors are located at +14.000 elevation of the reactor building. The equipment was tested in a few stages. Vibration levels were measured, and automation system was checked during the tests. Electric motors idling lasted six hours.

As noted by LNPP-2 Chief Engineer, Alexander Belyaev, electric motors are duly assembled, fully operational and work steadily. No noise, vibration, defects or faults were noted during idling. All the measurable and controlled parameters are confirmed to be within working values.

All the four electric motors having passed the running tests (as of now, three of them are tested), JSC MSU-90 specialists will connect them to the circulation pumps. The pumps will further undergo load tests.


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.