[1] They are pressurized water reactors (PWR) fueled by either 30–40% or 90%[note 1] enriched uranium-235 fuel to produce 135 to 171 MW of thermal power.
[2] The KLT-40S variant is used in the Russian floating nuclear power station Akademik Lomonosov.
It was developed by OKBM Afrikantov and produced by NMZ.
The KLT-40S produces 150 MW thermal (about 52 MWe at 35% efficiency).
[3] The KLT-40 design was further improved and evolved into RITM-200 family of SMR.