Russian nuclear utility Rosenergoatom (part of state nuclear power corporation Rosatom) has started circulation washing of pipelines and equipment at unit 1 of the Leningrad II NPP under construction in Sosnovy Bor, adjacent to the original Leningrad power plant. The procedure at the unit is part of the pre-commissioning stage. Cold and hot function testing was started in April.
Leningrad-II features VVER-1200/491 units and will replace the four RBMK units at the original plant, which are nearing the end of their design life. Two 1200MWe AES-2006 units are currently under construction, with two further units planned. Rosenergoatom said on 17 July that tests of block transformers and auxiliary transformers at the unit had been completed. “The 72-hour testing confirmed that this electrical equipment was installed correctly and will function.... for the entire lifetime of the plant.” The turbine unit has also been completed.
The physical startup of the Leningrad II-1 is scheduled for the autumn, Rosatom said on 14 July. Leningrad II-1 was scheduled for commercial operation in 2015, but the deadline was put back to 2017. Unit 2 is scheduled for a start up in 2019. The general designer of Leningrad II is Atomproekt, while the general contractor is Titan-2 JSC.