The competitiveness of Atomstroyexport offers is based on application of modern technologies and the most up-to-date developments of Russian scientists and designers. All the projects comply with modern international requirements and IAEA recommendations.
Russian technologies are evolving and modern power plants are improved, modernized variants of basic projects which have already proved themselves well. Reactor plants, turbines, generators are constantly improved.
While constructing nuclear power plants Atomstroyexport traditionally uses light-water reactor plants of VVER type (water cooled water moderated power reactor with pressurized water). In such reactors light water is used as a neutron moderator serving as heat carrier also.
VVER reactor is considered one of the safest reactors in the world and serves as the basis for the Russian nuclear industry’s development program and export of Russia’s nuclear technologies. Time has proven the efficiency of VVER reactors – more than 1000 reactor-years of accident-free operation.
More than 50 nuclear power plant power units of VVER type during the whole history of the reactor industry have been constructed in Russia, Ukraine, Czech Republic, Slovakia, Hungary, Germany, Finland, China. Nuclear power plant construction projects with VVER are at different stages in Russia, India, Iran and Bulgaria.
At the end of 1990s based on nuclear power plant projects with VVER-1000, development started on third generation reactors with consideration of the maximal comparison to the existing requirements in the field of nuclear power engineering safety.
Today JSC “Atomstroyexport” offers foreign customers nuclear power plant projects with third generation VVER reactors. Safety provision in these projects is based on principle of protection in depth – application of barrier systems on the way of ionizing radiation and radioactive substances into the environment and system of technical and organization measures for barrier protection and maintaining their efficiency, as well as protecting the local population.
Application of several solutions aimed at preventing radioactive emissions into the environment is provided. This is done by using localizing safety systems such as a double containment shell with intermediate clearance (containment), passive leakage filtering system, hydrogen incineration system based on passive re-combiners, sprinkler system for accident pressure decrease in containment, core melts localization device. These solutions enable us to practically completely exclude a possible increase of emergency emission during accidents beyond the design basis, including severe accidents with complete nuclear-fuel meltdown. The high level of reliability of nuclear power plant safety performance is provided by means of inter reserving passive and active safety systems.