Comment Re:Thorium (Score 1) 169
Well, Windscale was never used for civilian power production. I think nearly all of the reactors designed for weapons production were far less safe than nearly any civilian design.
And yeah, the Magnox reactors weren't very safe either, although they're better IMO than the RBMK design.
CANDU are, to my knowledge, the only other civilian reactors in use to have a positive void coefficient, but at least in their case the moderator (heavy water) isn't flammable...