MSU-90 specialists have started flushing the demineralized water supply system (KBC-2). During the flushing, chemically-demineralized water will be supplied through it to the borated water tank and the make-up and boron control system (KVA), then it will be flushed in the unsealed reactor through safety systems.

Thus, the demineralized water supply system (KBC-2) is a supplying one. It covers several key facilities of the nuclear island: the reactor building, the control, safety, auxiliary buildings, etc.

22 systems will be engaged in stage one of the flushing.


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.