俄羅斯的第四代一樣處於早期研究階段
BN-1200 2015遇到問題重新設計
http://www.world-nuclear.org/inform...r-reactors.aspx
http://www.world-nuclear.org/inform...lear-power.aspx
https://en.wikipedia.org/wiki/BN-1200_reactor

OKBM Afrikantov announced completion of the detailed design in May 2017, and Rosatom is expected to commit to building it – a significant improvement upon the BN-800 – by the end of 2017. SPb AEP (merged with VNIPIET to become Atomproekt) is the general designer. Rosatom sees this as a “Generation IV design with natural security” – an element of the Proryv (Breakthrough) project*, with closed fuel cycle. Further reactor details in the information paper on Fast Neutron Reactors.

OKBM earlier expected the first BN-1200 unit with MOX fuel to be commissioned in 2020, then eight more to 2030, moving to dense nitride U-Pu fuel with closed fuel cycle. Rosatom plans to submit the BN-1200 to the Generation IV International Forum (GIF) as a Generation IV design.