The operation shall last about a month and will include 78 tests.

At the stage of “hot” run the reactor plant equipment operability is to be checked: normal operation auxiliary process systems and safety systems. During the check the primary circuit shall be filled with water and heated.  The main steam lines blowdown shall be performed with the use of service steam and primary and secondary circuits water-chemistry are to be adjusted.

During the tests the water in the reactor plant shall be heated to a temperature of approximately 300 degrees. The average heating rate of the process is 10 degrees per hour.

All switching during the “hot” run will be made from the unit control room. The work will be performed around the clock.

The operation will take place using dummy nuclear fuel assemblies, which are now put into the reactor. The successful “hot” run will allow specialists to proceed with a key challenge this year, that is,  the reactor first criticality. 


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.