Come back when you have an understanding of pebble bed reactors.
They can be as small as your central air conditioner outside your home.......................
“pebble bed reactors”
Every single time I hear that term, I picture a beautiful stream in the woods with an incredible looking bed made of all sorts of smooth rocks teeming with life like three headed fish that glow and neon blue frog/beaver hybrids ... obviously, I know nothing about them :-P.