The Leningrad NPP-2: a display wall installed at the 2nd VVER-1200 power block No.2

A 2x4-meter large screen display has been installed at the innovative 2nd VVER-1200 power block of the Leningrad NPP-2.

This display is a part of the power block’s automatic process control system and a crucial element from the security point of view. It delivers summarized and detailed information to the block dashboard’s operating staff: lead engineers managing the reactor and the turbine, the senior reactor operator, the block’s shift supervisor, and the nuclear power plant’s shift operator.

According to the Leningrad NPP-2 thermal instrumentation & control shop team, the large screen display will instantly broadcast information on the current state of the power block and its major technological equipment: the primary and the secondary reactor facility coolant circuit, the electric unit of the power block, the safety systems in all four channels, etc. The data shown on the display will let the experts maintain ongoing control over the technological systems and coordinate their joint activities at any operating mode of the block.

‘This display is some sort of a uniting element for all operating staff of the block’s dashboard. The nuclear power specialists will use it to work as a single team, respond quickly and efficiently to anything happening at the power block, and make the right decisions promptly. Besides, since there is a number of extra servers, this equipment does not rely on the top block level systems and, hence, if the latter fails, the display will continue delivering all the necessary details to the operating staff’, Dmitry Marygin, the section head at thermal instrumentation & control shop of the Leningrad NPP-2, said.

Shortly, the pre-commissioning and testing activities will start at the installed equipment. Once the large screen display is launched operational, it will run non-stop. When necessary, particular elements of the display may be temporarily taken out of service for maintenance and repairs. This was stipulated in the project.


Compared to the traditional VVER-1000 power blocks, the project for the 3+ generation Leningrad NPP power block has a number of advantages that considerably increase its economic parameters and safety standards. The capacity of the nuclear facility has been increased by 20%, from 1000 to 1200 megawatt; the designed life span of the core equipment has doubled and is now 60 years. In addition to that, this power block complies with the top international standards with regard to nuclear security. The Leningrad NPP-2 project serves as a reference for several international projects by the Rosatom State Corporation, such as the Belarusian NPP, the Paksh-2 NPP, the El Dabaa NPP, the Hanhikivi-1 NPP, etc.

The Leningrad NPP is the country’s first plant with RBMK-1000 reactors (uranium-graphite circuit-type reactor running on thermal neutrons). The decision that marked its construction was taken in September 1966 by a resolution of the Central Committee of the Communist Party of the USSR and the Council of Ministers No. 800-252. According to that document, the Leningrad NPP was supposed to become a core in a network of nuclear power plants with RBMK-1000 reactors that were supposed to produce a substantial share of electric power. The construction of the Leningrad NPP was going well, and by 1973 the first power block was fully erected. On December 23, 1973, following stable 72-hours’ operation at the capacity of 150 megawatt, the State Commission signed the acceptance certificate stating that the first power block of the Leningrad nuclear power plant is commissioned for pilot production. 

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