The innovative 2nd power block of the Novovoronezh NPP-2 has reached 50% of its capacity

The innovative 3+ generation 2nd power block of the Novovoronezh NPP-2 (a subsidiary of the Rosenergoatom Joint-Stock Company, a part of the Electric power division of the Rosatom State Corporation) running a VVER-1200 reactor has reached 50% of its capacity.

That said, the first sub-stage of the new power block’s low-power testing by way of pilot production has been completed. The pilot production is the last stage preceding the operational launch of the power block.

The pilot production is a part of a set of work on the operational launch of the Novovoronezh NPP-2 2nd power block, which comprises four sub-stages: reaching 50% of the capacity (sub-stage 1); reaching 75% of the capacity (sub-stage 2); reaching the designated capacity (sub-stage 3: includes trial runs at 90% and 100% of the capacity); a comprehensive equipment test (acceptance test) over the whole power block and its commissioning (sub-stage 4). After each capacity milestone is achieved, scheduled trials with load relief are carried out. The works adhere to the plan, there has been no deviations so far.

‘The pilot production will be completed following successful trials at all capacity milestones, including the designated one (100%), and the acceptance tests for the power block. After that, Rostekhnadzor will verify the compliance of the power block with its design and issue an appropriate resolution. We plan to commission the new power block late 2019’, Vladimir Kazanskiy, the deputy chief engineer of new power blocks construction, said.

It is important to note that the first electric hook-up for the 2nd Novovoronezh NPP-2 power block (power start-up) took place on May 1, 2019. The Novovoronezh NPP obtained the Rostekhnadzor license for commissioning the 2nd power block into pilot operation on June 3, 2019, which was followed by equipment trials at different modes. 

The innovative 3+ generation power blocks boast improved technical and economic parameters that also facilitate full operational safety. They make use of the top-notch technology achievements and developments. The main point of the VVER-1200 reactor power blocks is the unique combination of active and passive safety systems that make the NPPs highly reliable to both internal and external load. What is typical for the passive systems is that they can work even when the energy supply is off and without an operator. The VVER-1200 reactor power blocks use: a ‘melt trap’ – a device that localizes the nuclear reactor’s core meltdown; an afterheat removal passive system designed to remove heat from the reactor’s active zone into the atmosphere for a long time if all energy supply sources are off; etc.

Countries like Finland, Hungary, Bangladesh, Belarus and others have opted for this technology. The international portfolio of Rosatom encompasses 36 VVER blocks in 12 countries.

Novovoronezh NPP is a branch of Rosenergoatom JSC (a part of the largest Division of Rosatom State Corporation – Electric Power Division). The Plant is situated on the River Don bank 42 km South of Voronezh. This is the first NPP of Russia with VVER type reactors (Water-Water Power Reactors of containment type with water under pressure). Three reactors of the Plant are the main ones – the prototypes of the serial power reactors. The first power unit was commissioned in 1964, the second one - in 1969, the third one – in 1971, the fourth one – in 1972, and the fifth one – in 1980. 

The power units No 1 and No 2 were shut down in 1984 and 1990, respectively. The power unit No 3 was shut down in 2016 for the decommissioning events. The power unit No 4 was shut down for modernization works. The power unit No 1 of Novovoronezh NPP-2 was commissioned on 27 February, 2017. The power unit No 2 is in the stage of commissioning works. 

The latest information about radiation situation near Russian NPPS and other nuclear power facilities can be seen at www.russianatom.ru 

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