alt Hacker NewsThese aren't nuclear power plants. They're designs of nuclear power plants. None have been constructed (well, aside from old plants like Superphenix, which was a failure, so much so that the French have mothballed their fast reactor program.)
Moreover, they would be considerably more expensive than existing plants (especially if fuel is to be reprocessed), so they're nonstarters.
Ah yes. “Old” plants. This plant is “old” so we could never build more like it. What an argument. And no, they would not be “considerably more expensive” because we wouldnt build a fleet of them until uranium was expensive enough that they would be cheaper. Thats why most countries have put off breeder reactor development not because they were “failures” whatever that is supposed to mean.