Rosatom Starts Installation Of The Word’s First 4th Nuclear Generation Reactor—Rosatom has achieved a landmark milestone in construction of a power unit with theinnovative fast neutron BREST-OD-300 reactor on the site of the Pilot demonstration energy complex (PDEC) in Seversk, Tomsk Region (West Siberia). It’s the first of its kind in the world
The steel reactor baseplate with the total weight of 165 tons has been installed. The workers have also loaded into the reactor shaft the first part of the reactor vessel – the lower tier of the containment.
The containment structure is the outer part of the reactor vessel. It provides retention of heat-insulating concrete, forming an additional localizing barrier of protection, which surrounds the boundary of the coolant circuit. On its surface, the temperature should not exceed 60 degrees Celsius, and the radiation background is actually equal to the natural background.
A 300 MW NPP powered by the lead-cooled BREST-OD-300 fast reactor, based on the principles of “natural safety”, is the key element of the Pilot demonstration energy complex, which is under construction on the site of the Siberian Chemical Combine in Seversk, an enterprise of TVEL Fuel Company of Rosatom.
The PDEC facilities are developed under Rosatom’s strategic “Proryv” project (“the Breakthrough”). In addition to the power unit, it also includes facilities of the on-site closed nuclear fuel cycle – a unit for the fabrication of uranium-plutonium nitride fuel, as well as a unit for reprocessing of irradiated fuel.
“We have started installation of the world’s first lead-cooled fast reactor, the fourth generation reactor BREST-OD-300. Unlike traditional light-water VVER thermal reactors, BREST has an integral layout. Its vessel is not an all-metal structure like the VVER, but a metal-concrete structure with metal cavities to accommodate the primary circuit equipment.
The space between the cavities should be gradually filled with concrete filler during construction. In addition, the BREST vessel is larger in size, it can be delivered only in parts, and the final assembly is possible only at the PDEC construction site,” commented Vadim Lemekhov, Chief Designer of the BREST-OD-300 reactor unit and General Designer of the “Breakthrough” project team.
A third of the almost 30 countries currently considering nuclear power are in Africa. Egypt, Ghana, Kenya, Morocco, Niger, Nigeria and Sudan have already engaged with the IAEA to assess their readiness to embark on a nuclear programme. Algeria, Tunisia, Uganda, Zambia and others are also studying the possibility of nuclear power.
According to the 2022 edition of “Climate Change and Nuclear Power” by IAEA, some 600 million people and 10 million small businesses in Africa have no reliable source of electricity and that, increasingly, connection to a national grid is no guarantee of electricity supply. Africa’s energy demand is increasing twice as fast as the global average, largely driven by urban population growth.
Russian experience can be useful for many countries. South Africa’s history with nuclear technology is also very notable. The success story of nuclear technology in South Africa is multifaceted, encompassing not only the generation of electricity but also advancements in medicine, agriculture, and science. The country’s journey into the nuclear domain has been marked by strategic developments, international collaboration, and a forward-looking approach to leveraging nuclear technology for national benefit.
The cornerstone of South Africa’s nuclear success is the Koeberg Nuclear Power Station, located near Cape Town. Operational since 1984, Koeberg is the only nuclear power plant in Africa and contributes around 5% of South Africa’s electricity production. It has been a reliable source of clean energy, showcasing the potential of nuclear power in meeting energy needs while minimizing carbon emissions.
South Africa’s plans for future implementation reflect a strategic approach to harnessing nuclear energy’s benefits. The country’s efforts to expand its nuclear capacity, coupled with its achievements in nuclear medicine and research, position it as a leader in nuclear technology in Africa and as a model for other countries exploring nuclear energy as a sustainable and reliable energy source.
Advantage of fast nuclear reactors
The advantage of fast reactors is their ability to efficiently use the fuel cycle’s secondary byproducts (in particular, plutonium) for energy production. At the same time as having a high regeneration factor, fast reactors can produce more potential fuel than they consume and also burn out (i.e., use in the process of energy generation) highly active transuranic elements (actinides).
The design of the BREST-OD-300 lead-cooled reactor is based on the principles of so-called natural safety. The features of the reactor made it possible to abandon the melt trap, a large volume of support systems, and also to lower the safety class of the non-reactor equipment. The integral design and physics of the reactor facility make enable to exclude accidents requiring evacuation of the population.
In the future, such installations should not only enhance the safety of nuclear power, but also make it more economically competitive in comparison with the most efficient thermal power generation (in particular, steam-gas technology).
The BREST-OD-300 reactor will provide itself with its main energy component – plutonium-239 – reproducing it from the isotope uranium-238, which has a relative abundance of more than 99% (it is the isotope uranium-235, which makes about 0.7% of natural uranium, that is currently used to produce energy in thermal reactors).
The introduction of such technologies will increase exponentially the efficiency of natural uranium. Uranium has about a 86% share in the world reserves of energy resources, compared to coal at 8%, oil at 3%, and gas at 3%.
