New unit delivers first electricity to Russian grid

Rosenergoatom, the electric power division of Russia’s state-owned nuclear power corporation Rosatom, announced on October 23 that Leningrad II-2 has been connected to the grid. The unit is one of two Generation III+ VVER-1200 pressurized water reactors at the Leningrad nuclear plant.

The reactor will replace Leningrad I-2, a 925-MWe RBMK-1000 light-water–cooled graphite-moderated reactor that will permanently cease operation at the end of 2020 after 45 years of service. Fuel loading at Leningrad II-2 began in July, and initial criticality was achieved in August. Following the trial operation, the unit will be shut down for an additional equipment inspection by a state commission before being put into commercial operation early next year, according to Rosenergoatom.

Leningrad II unit reaches first criticality

Rosatom officials and plant staff celebrate in the control room at Leningrad II-2 as the unit achieves first criticality. Photo: Rosatom

Rosenergoatom, the electric power division of Rosatom, Russia’s state-owned nuclear power corporation, announced on August 31 that Leningrad II-2 has achieved initial criticality. The unit is one of two Generation III+ VVER-1200 pressurized water reactors at the Leningrad nuclear plant.

Leningrad II-2 is scheduled for commercial start early next year, replacing Leningrad I-2, a 925-MWe RBMK-1000 light-water–cooled graphite-moderated reactor that will permanently cease operation at the end of 2020 after 45 years of service. Fuel loading at Leningrad II-2 began in July.

Fuel loading begins at Leningrad II-2

Technicians at the Leningrad II-2 plant, where fuel loading recently took place. Photo: Rosenergoatom

The first of 163 nuclear fuel assemblies has been loaded into Leningrad II-2, marking the beginning of the Generation III+ unit’s physical startup, Rosenergoatom announced on July 19.

The electric power division of Rosatom, Russia’s state-owned atomic energy corporation, Rosenergoatom is the operator of all of Russia’s nuclear power plants. The fuel for Leningrad II-2, a 1,085-MWe VVER-1200 pressurized water reactor, was manufactured at the Novosibirsk Chemical Concentrates Plant, part of Rosatom subsidiary TVEL.