Leningrad NPP-2: the first diesel generator for the diesel-generating standby electric power station was delivered to the power unit No. 2

The first of four diesel generators of diesel-generating standby electric power station was delivered to the site of the second work-in-progress power unit with the VVER-1200 of the Leningrad NPP-2.

A special self-propelled trolley and hydraulic portal were required for transportation of large-size equipment and loading and unloading. Also, the contractor’s specialists laid a rolling path for the equipment to be delivered to the space provided for it.

Now the diesel generator is being prepared for the installing on the foundation. Then it will be fixed and will be filled with concrete, tied with cooling pipes, pipelines for air supply, fuel and oil supply, etc. At the next stage, the commissioning of equipment will begin, during which the correctness of the electrical connections will be checked. After that, the diesel generator will be connected to the network and necessary testing will be conducted. The other three diesel generators will be delivered to the site during April-May; now they are stored at the construction base in close proximity to the work-in-progress NPP. As it was explained at the Leningrad NPP-2 Capital Construction Office, all operations on the installation of diesel generators is planned to be completed in the second quarter of 2019.

Diesel generator sets are equipment that improves safety of a nuclear power plant. In case of emergency (shutdown of an external power source), they can provide all the main and auxiliary process equipment of the power unit with power supply in order to put the reactor system into a safe state.

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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