SMRs & ADVANCED REACTORS | RITM-200N as a terrestrial unit The RITM-200N The advantages of marine nuclear solutions, such as compactness,
manoeuvrability, resistance to external influences, and inherent safety features, allow nuclear power plants based on the same design principles to be highly competitive. The terrestrial version of Rosatom’s marine reactor, the RITM-200N reactor, is aiming to achieve all these ambitions and more
By: S. Saha, Advisor; A. Anishchenkov, Director; and N. Mazein, Vice President Rosatom Group Company, with V.V. Petrunin, First Deputy General Director and General Designer, D. Schekin, Deputy Chief Designer, and
A.Vedeneev, Engineer Designer, Afrikantov OKBM JSC
SMALL MODULAR REACTORS (SMRs) ARE newer generation reactors designed to generate electric power typically from 20 MWe up to 300 MWe, whose components and systems can be shop fabricated and then transported as modules to the sites for installation. Most of the SMR designs adopt advanced or even inherent safety features and are deployable either as a single or multi-module plant. SMR design is characterised by higher modularisation, simplification and factory-based construction, which maximises reduction of construction and erection cost, and the construction period. Economic gains on account of the reduction of volume of on-site work and shorter deployment times are important consideration for adaptation of SMRs. The key driving forces of SMR development are power generation for a wider range of applications, enhanced safety performance, and possibility to offer better economic affordability in comparison with large reactors. SMRs deployable in the near term will have safety performance comparable or better to that of advanced reactor designs.
Modern Russian SMRs based on pressurised water
reactors are used in nuclear shipping industry. The latest marine reactor now in operation is the RITM-200 which is an evolutionary pressurised water reactor developed for universal nuclear icebreakers project 22220 based on the design and operating experiences of fleets of icebreakers with more than 400 reactor-years of operation. Eight RITM- 200 reactors have been installed in the icebreaker vessels ‘Arktika’, ‘Sibir’, ‘Ural’ and ‘Yakutia’. The SMR-type RITM incorporates all the best features
from its predecessors, the OK-150, OK-900, KLT 40 series reactors used in previous generations of Russian nuclear icebreakers and the cargo ship ‘Sevmorput’ which has been operating for more than 20 years. This design is now being amended for use in land-based applications.
Developing a design for land-based applications The RITM-200N is the latest development in Generation III+ SMR based on marine PWR technology for land-based
Above: Rosatom’s RITM-200N is a terrestrial version of marine reactors like this one All images courtesy of Rosatom
36 | May 2024 |
www.neimagazine.com
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