KLT-40 reactor
Introduction

The **KLT\-40** family are [nuclear fission](/wiki/Nuclear_fission "Nuclear fission") [reactors](/wiki/Nuclear_reactor "Nuclear reactor") originating from [OK\-150](/wiki/OK-150_reactor "OK-150 reactor") and OK\-900 ship reactors. KLT\-40 were developed to power the [*Taymyr*\-class icebreakers](/wiki/Taymyr_class_icebreaker "Taymyr class icebreaker") (KLT\-40M, 171 MW) and the [LASH carrier](/wiki/Lighter_aboard_ship "Lighter aboard ship") *[Sevmorput](/wiki/Sevmorput "Sevmorput")* (KLT\-40, 135 MW).[Nuclear icebreakers](http://www.bellona.org/english_import_area/international/russia/civilian_nuclear_vessels/icebreakers/30107) . Bellona Foundation, 18 June 1997\.  They are [pressurized water reactors](/wiki/Pressurized_water_reactor "Pressurized water reactor") (PWR) fueled by either 30–40% or 90%90 % according to information provided to Norwegian government in 1990, 30–40 % according to [Bellona Foundation](/wiki/Bellona_Foundation "Bellona Foundation") citing communication with [Murmansk Shipping Company](/wiki/Murmansk_Shipping_Company "Murmansk Shipping Company"). (Diakov, Anatoli C. et al.) [enriched](/wiki/Enriched_uranium "Enriched uranium") [uranium\-235](/wiki/Uranium-235 "Uranium-235") fuel to produce 135 to 171 MW of thermal power.

The **KLT\-40S** variant is used in the [Russian floating nuclear power station](/wiki/Russian_floating_nuclear_power_station "Russian floating nuclear power station") *[Akademik Lomonosov](/wiki/Akademik_Lomonosov "Akademik Lomonosov")*. It was developed by [OKBM Afrikantov](/wiki/OKBM_Afrikantov "OKBM Afrikantov") and produced by [NMZ](/wiki/NMZ "NMZ"). The KLT\-40S produces 150 MW thermal (about 52 MWe at 35% efficiency). It uses [low\-enriched uranium](/wiki/Low-enriched_uranium "Low-enriched uranium") (LEU) fuel enriched below 20%, averaging at 14\.1% enrichment, and has a [fuel cycle](/wiki/Nuclear_fuel_cycle "Nuclear fuel cycle") of 3 years.

The KLT\-40 design was further improved and evolved into [RITM\-200](/wiki/RITM-200 "RITM-200") family of SMR.


Where is the KLT-40S variant used?