VVER1200

The VVER-1200 is a third-generation pressurized water reactor (PWR) designed by the OKBM Afrikantov Design Bureau in Russia. It is a further development of the VVER-1000 series, with increased power output and improved safety features. The VVER-1200 has a nominal electrical power output of 1200 MW, with a thermal power of 3400 MW. It operates at a pressure of 16.7 MPa and a temperature of 325°C. The reactor core is composed of 163 fuel assemblies, each containing 312 fuel rods. The reactor vessel is made of austenitic stainless steel, and the primary circuit is made of carbon steel. The VVER-1200 is designed to operate for up to 60 years, with a refueling interval of 18 months. It incorporates advanced safety features, including passive heat removal systems and a containment building designed to withstand external events. The VVER-1200 is widely used in Russia and other countries, with several units currently under construction or planned.