Good News on Nuclear

Uranium-235 is an isotope of uranium making up only about 0.72% of natural uranium. The rest is uranium-238. A normal slow-neutron reactor consumes the Uranium-235, but leaves the uranium-238 behind as waste that remains radioactive for hundreds of thousands of years. Decades ago, the Europeans invented a fast-neutron reactor than consumes both. So it can use uranium-238 nuclear waste as fuel and completely consuming it leaving almost no radioactive waste. This seems to me infinitely more sensible than any scheme to store the uranium-238 waste, hoping to keep it confined for hundreds of thousands of years. I don’t know if such reactors have serious drawbacks.

~ Roedy (1948-02-04 age:69)