The Leningrad NPP: the clean area for the reactor assembly has been established at the 2nd VVER-1200 type power block

The ‘clean zone’ has been established at the reactor room of the Leningrad NPP’s 2nd VVER-1200 type power block. This means that the general construction works at the containment have been fully completed, so the team can start working on the controlled assembly of the reactor, the most critical part of the equipment.

According to Alexey Mochalov, the deputy head of the Leningrad NPP-2 reactor hall, the specialists have done everything necessary for the production activities: industrial waste has been removed from the assembly zone, only the authorized personnel is granted access, any repositioning of working tools is recorded, and the work clothing complies with the applicable standards. The central point is wet cleaned multiple times on a daily basis.

‘The establishment of the clean zone excludes any chance for impurities or foreign objects to get to the assembly zone, thus avoiding any damage to the equipment during its assembly’, Mr. Mochalov noted.

The reactor controlled assembly is scheduled to start late Q1 2019. The operation is supposed to verify the top-notch quality of the equipment production and its compliance with the technical standards.

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.

Back to the list