Passive “fail safe” designs have been around for quite a while, like the GE ESBWR, which is a Gen III reactor. This[1] data sheet is from 2011. Newer reactors,

Passive “fail safe” designs have been around for quite a while, like the GE ESBWR, which is a Gen III reactor. This[1] data sheet is from 2011. Newer reactors, like the pool-type, metal-fueled, small modular Sodium Fast Reactor [2] are significantly more efficient, are air-cooled, automatically shutdown without human, electronic or mechanical intervention, and by using electro-metallurgical separation, can recycle up to 96 percent of the fissionable material. [1] https://nuclear.gepower.com/content/dam/gepower-nuclear/global/en_US/documents/product-fact-sheets/ESBWR%20Passive%20Safety%20Fact%20Sheet.pdf https://nuclear.gepower.com/content/dam/gepower-nuclear/glob... [2] https://nuclear.gepower.com/build-a-plant/products/nuclear-power-plants-overview/prism1 https://nuclear.gepower.com/build-a-plant/products/nuclear-p...