The entire scope of equipment for the facility was installed by employees of  the JSC "MSU-90”, which is a subsidiary of the holding "TITAN-2". The same JSC “MSU” was directly involved in the testing.

During this most important operation the reactor plant secondary circuit was filled with chemically demineralized water, which acts as a coolant.  Steam generators, related piping and valves withstood the fluid pressure in the amount of 11.5 MPa.  The reactor plant secondary circuit leak tightness and strength thus were confirmed.  This proved that the equipment and pipelines of the secondary circuit were manufactured and assembled efficiently, their characteristics match the design.

Hydraulic tests of the secondary circuit concluded the stage of the “cold” run test of the reactor plant.  Now, the specialists will perform "hot” run test, during which operation of the equipment and all reactor plant systems of Power Unit 1 will be tested under operation load.


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.