Yeah that is the most real manifestation of this kind of concept in modern days. The Russians have built and operated dozens of PWRs for terrestrial commercial

Yeah that is the most real manifestation of this kind of concept in modern days. The Russians have built and operated dozens of PWRs for terrestrial commercial applications in the past few decades as well (the VVER). The RBMK has been retired as a design since 1960 or so. https://en.wikipedia.org/wiki/VVER https://en.wikipedia.org/wiki/VVER