UK nuclear power shipping start-up Core Power says the world’s first molten chloride fast reactor (MCFR) has passed another milestone in helping decarbonise the sector.

Southern Company and TerraPower — the US partners of Mikal Boe-led Core Power — have successfully started pumped-salt operations in an integrated effects test (IET), which they described as a “major achievement in the development of fourth-generation molten salt reactor technology”.