Skip to content
FusionBenchmark

OKBM Afrikantov

馃嚪馃嚭 Nizhny Novgorod, RU 路 Active

Also known as OKBM, Afrikantov OKBM

OKBM Afrikantov (the I. I. Afrikantov Experimental Design Bureau of Mechanical Engineering) is a nuclear engineering company in Nizhny Novgorod and a subsidiary of Rosatom. It is best known as the main designer of the reactors for Soviet and Russian nuclear submarines, nuclear icebreakers and the floating nuclear power plant, and it also designs fast breeder reactors. In the IAEA's 2024 catalogue of small reactors it is the developer of the KLT-40S, used in a floating plant, the RITM-200N and RITM-200M, the ABV-6E and the VBER-300 pressurised water reactors, and of several gas-cooled designs including the GT-MHR.

Sector
Fission
Technology
Pressurised water reactor, High-temperature gas-cooled reactor
Role
Reactor developer

Terms

Pressurised water reactor
Ordinary (light) water kept under high pressure so it heats without boiling, transferring heat to a separate steam loop; the water is both coolant and moderator. Fuel is low-enriched uranium oxide pellets in zirconium-alloy rods. The most common reactor type in service worldwide.
High-temperature gas-cooled reactor
Helium-cooled and graphite-moderated, running far hotter than a water reactor. Fuel is TRISO particles, typically formed into pebbles or prismatic blocks, at LEU or HALEU enrichment depending on the design. The high outlet temperature suits industrial process heat as well as electricity.

Designs

Design Developer Approach Electrical output per unit Size class Licensing stage
ABV-6E OKBM Afrikantov with Rosatom Pressurised water reactor 6 to 9 MWe planned Microreactor No milestone recorded
GT-MHR Gas Turbine Modular Helium Reactor OKBM Afrikantov with Rosatom High-temperature gas-cooled reactor 288 MWe planned Small modular reactor No milestone recorded
KLT-40S OKBM Afrikantov with Rosatom Pressurised water reactor 35 MWe claimed Small modular reactor No milestone recorded
MHR-100 OKBM Afrikantov with Rosatom High-temperature gas-cooled reactor 25 to 87 MWe planned Small modular reactor No milestone recorded
MHR-T OKBM Afrikantov with Rosatom High-temperature gas-cooled reactor 205.5 MWe planned Small modular reactor No milestone recorded
RITM-200M OKBM Afrikantov with Rosatom Pressurised water reactor 50 MWe planned Small modular reactor No milestone recorded
RITM-200N OKBM Afrikantov with Rosatom Pressurised water reactor 55 MWe planned Small modular reactor No milestone recorded
VBER-300 OKBM Afrikantov with Rosatom Pressurised water reactor 325 MWe planned Large reactor No milestone recorded

Related companies

Sources