A really big neighborhood or single factory, and it’s not cheap (upfront), even if you believe their own cost projections. OP was talking about the “plutonium to heat your personal swimming pool” kind of scale. (That’s an actual idea Glen Seaborg put forward in the 50’s, BTW)
It’s also worth mentioning intrinsic safety is kind of mutually exclusive with fast reactors that can use waste. If your neutrons are at millions of degrees it’s a lot harder to set up a feedback loop with reactor’s temperature at all, let alone an unbreakably stable one.
A really big neighborhood or single factory, and it’s not cheap (upfront), even if you believe their own cost projections. OP was talking about the “plutonium to heat your personal swimming pool” kind of scale. (That’s an actual idea Glen Seaborg put forward in the 50’s, BTW)
It’s also worth mentioning intrinsic safety is kind of mutually exclusive with fast reactors that can use waste. If your neutrons are at millions of degrees it’s a lot harder to set up a feedback loop with reactor’s temperature at all, let alone an unbreakably stable one.