Radically 'dumb' nuclear distillation that has Uranium pebbles just 'boil' water and then capture the condensation. Those pebbles could sit there for 50 years b

Radically 'dumb' nuclear distillation that has Uranium pebbles just 'boil' water and then capture the condensation. Those pebbles could sit there for 50 years before reconstitution. It might even be designed so that left unmanned, it just kept working or wouldn't overheat i.e. using 'heavy water' like CANDU reactors. Designed not so much for efficiency but for simplicity, safety, longevity.