MBIR

The MBIR is a multi-loop research reactor capable of testing lead, lead-bismuth and gas coolants, and run on MOX fuel. MBIR intends to replace the old BOR-60 experimental fast reactor that started operations at RIAR's site in 1969. It will have a design life of 50 years.^[3]

MBIR
Reactor concept	Fast-neutron reactor[1]
Status	Under construction since 2015
Location	Dimitrovgrad, Russia, Russia
Main parameters of the reactor core
Fuel (fissile material)	vibropacked MOX fuel with plutonium content of 38%[1]
Neutron energy spectrum	Fast
Primary coolant	sodium (Pb–Bi, gas)[1]
Reactor usage
Power (thermal)	150 MW[2]
Power (electric)	55 MW[2]

History

Construction has started in 2015.^[4]

MBIR control assembly was installed in 2019.^[5]

Reactor vessel was installed in 2023.^[6]

Pilot fuel elements were produced in 2024. The MBIR is scheduled to begin operation in 2027.^[3]

Estimated commissioning date is 2028.^[2]

See also

• Energy portal
• Nuclear technology portal
• Russia portal

• Generation IV reactor
• BN-800 reactor – generation IV sodium-cooled fast breeder reactor, operational since 2016
• BREST-300 – generation IV lead-cooled fast reactor, in construction since 2020
• Versatile Test Reactor – a similar US project, the funding was canceled in 2022