The KLT-40 family are

nuclear fission Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radio ...

reactors originating from OK-150 and OK-900 ship reactors. KLT-40 were developed to power the ''Taymyr''-class icebreakers (KLT-40M, 171 MW) and the LASH carrier ''

Sevmorput ''Sevmorput'' ( rus, Севморпуть, p=sʲɪvmɐrˈputʲ, Northeast Passage) is a Russian nuclear-powered cargo ship. The 1988-built vessel is one of only four nuclear-powered merchant ships ever built and, after returning to service in 2 ...

'' (KLT-40, 135 MW).Nuclear icebreakers
. Bellona Foundation, 18 June 1997. They are

pressurized water reactor A pressurized water reactor (PWR) is a type of light-water reactor, light-water nuclear reactor. PWRs constitute the large majority of the world's nuclear power plants (with notable exceptions being the UK, Japan and Canada). In a PWR, the primary ...

s (PWR) fueled by either 30–40% or 90%90 % according to information provided to Norwegian government in 1990, 30–40 % according to

Bellona Foundation The Bellona Foundation is an international environmental Non-governmental organization, NGO headquartered in Oslo, Norway, with branches in Europe and North America. Founded in 1986 by Frederic Hauge and Rune Haaland as a direct action protest gr ...

citing communication with

Murmansk Shipping Company Murmansk Shipping Company (russian: Мурманское морское пароходство), often abbreviated as MSCO, is a Russian shipping company based in Murmansk (hence the name). One of the primary shipping companies operating in Ar ...

. (Diakov, Anatoli C. et al.) enriched

uranium-235 Uranium-235 (235U or U-235) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a nuclear chain reaction. It is the only fissile isotope that exis ...

fuel to produce 135 to 171 MW of thermal power. The KLT-40S variant is used in the

Russian floating nuclear power station Floating nuclear power stations ( Russian: плавучая атомная теплоэлектростанция малой мощности, ПАТЭС ММ, literally "floating combined heat and power (CHP) low-power nuclear power plant") ar ...

Akademik Lomonosov ''Akademik Lomonosov'' (russian: Академик Ломоносов) is a non-self-propelled power barge that operates as the first Russian floating nuclear power station. The ship was named after academician Mikhail Lomonosov. It is docked in ...

''. It was developed by

OKBM Afrikantov OKBM Afrikantov (full name: OAO I. I. Afrikantov OKB Mechanical Engineering, russian: Опытное конструкторское бюро машиностроения им. И. И. Африкантова) is a nuclear engineering com ...

and produced by NMZ. The KLT-40S produces 150 MW thermal (about 52 MWe at 35% efficiency). It uses

low-enriched uranium Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (23 ...

(LEU) fuel enriched below 20%, averaging at 14.1% enrichment, and has a fuel cycle of 3 years. The KLT-40 design was further improved and evolved into

RITM-200 The RITM-200 is an integrated generation 3+ pressurized water reactor developed by OKBM Afrikantov and designed to produce 55 MWe. The design is an improvement of KLT-40 reactor. It uses up to 20% enriched uranium-235 and can be refueled every 10 ...

family of SMR.

Notes

References

External links

* - on

official pdf {{DEFAULTSORT:Klt-40 Reactor Soviet naval reactors Small modular reactor