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Initial Rotations Of New Leningrad Unit Confirmed
With the first barring speed of one rotation per minute, Russian utility Rosenergoatom said in late 2019 that technicians had achieved a milestone with the initial activation of the turbine for the 2nd VVER-1200 power block under construction at the Leningrad NPP
When the block reaches its full capacity, the turbine will spin at 3,000 rpm, Rosengergoatom said.
For now, ‘We have confirmed that the assembly and the alignment of all turbine water passage elements have been completed almost perfectly. No interference has been detected during the turbine generator revolution. The hydrolift, lubrication, oil cooling and heating systems, among other things, have been verified and adjusted. As a results, we have proven that the turbine will operate safely and reliably, with no increase in vibration and bearing runout," said Alexander Belyaev, the chief engineer of the Leningrad NPP-2.
Vladimir Pereguda, the director of the Leningrad NPP, noted: ‘A turbine is the second most complicated piece of machinery at an NPP following a reactor. Our joint team made of people from the general contractor, the adjustment personnel and the Leningrad NPP staff worked hard and spent many hours to deliver the job on time and with due quality. Our common work makes the launch of the second power block a reality’.
The power up launch of the 2nd VVER-1200 power block is planned for sometime in the second quarter of 2020. This will be followed by the pilot run and the connection to the grid. The unit is scheduled to be commissioned in early 2021.
Compared to the traditional VVER-1000 power blocks, the design of the modern 3+ generation Leningrad NPP has a lot of advantages that improve its economic parameters and security. For instance, the electric capacity of the reactor facility has been increased by 20 percent, from 1,000 to 1,200 MW. The expected primary equipment life span has doubled, going from 30 to 60 years. In the meantime, the power block complies with the strictest international nuclear safety requirements.
The Leningrad NPP-2 project is a benchmark for several international projects by the Rosatom State Corporation including the Belarusian NPP, the Paks-2 NPP, the El Dabaa NPP, the Hanhikivi-1 NPP, etc.
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