Comment Re:3%? Where did you get that from? (Score 3, Interesting) 484
Approximately 96% of "spent" fuel rod is fissile material. The reason it's considered "spent" is mechanics of the process which make it less economic to use at that point.
In much of the world, a mix of anti-nuclear lobby and anti-proliferation lobby declare this 96% spent fuel "waste". In France, they recycle it into fuel.
It's pulled out, enriched back to normal levels and put back into the reactor. Remaining 3-4% are the generated impurities. The portion of this that is "high grade" is actually fairly easy to deal with - you just let it sit and break itself down. The more radioactive it is, the shorter half life it has and the faster it destroys itself. It's the low grade stuff that is problematic, as you can't just wait for it to break itself up, you need to actually store it somewhere. That's what most of the nuclear waste storage brouhaha is about.