On February 27th, the newest power unit No 1 of Novovoronezh NPP-2 (power unit No 6 of Novovoronezh NPP) with 3+ generation VVER-1200 reactor has been put into industrial operation under ROSATOM State Atomic Energy Corporation control. Now it is the most powerful nuclear unit in the country.
The Russian Federal Environmental, Industrial and Nuclear Supervision Service (Rostekhnadzor) had recently issued a decision that project documentation of the commissioned object meets technical rules and regulations, including the requirements of energy efficiency.
“I am grateful to Novovoronezh NPP team for working really hard on putting the unit into commercial operation”, said Vladimir Povarov, Director of Novovoronezh NPP.
Unit No 1 of Novovoronezh NPP-2 was first connected to the Russian grid and started the electric energy generation on 5 August 2016. Low power testing was successfully passed at the stages of power start-up, pilot operation, during which the equipment and system checkout and testing at different capacity levels and under different operation conditions were carried out.
At the present time 3+ generation power units are being constructed in the USA and France; however, it is the Russian power unit No 1 of Novovoronezh NPP-2 that became the first new generation nuclear power unit in the world put into industrial operation.
The design of the innovative power unit of generation 3+ includes the most powerful type of VVER reactor with a capacity of 1200 MW, as well as a high-speed turbine specially designed for new-generation NPPs.
Novovoronezh NPP provides the highest level of operational safety and fully meets all post-Fukushima requirements strictly set by the IAEA. It main feature of Generation 3+ reactors is epitomized by a unique combination of active and passive safety systems, which do not require the NPP personnel intervention. Examples of innovative solutions in the field of safety applied in the project:
• Enhanced safety containment system: a double containment shell of the reactor hall and a core catcher located under the reactor vessel. It helps prevent radioactive releases into the environment and provides physical protection against natural disasters, industrial accidents and other emergencies;
• Two completely separate safety trains with internal redundancy of active elements;
• Passive residual heat removal system enabling sustained heat removal from the reactor core in the absence of any power sources.
The design also incorporates additional safety features developed taking into account the results of stress tests performed under extreme conditions that were harsher than during the accident at Fukushima-1 NPP.