You'd have to eat lots of Pu-239 to get sick and we know this for a fact unfortunately because of the insane story of Albert Stevens [1] who got the highest radiation dose of any known human and lived to be 79. He was one of 18 people injected with plutonium. None of the patients died from the injections. Why injection instead of ingestion? Because the body is actually very bad at absorbing Pu when it is eaten.
Let me just emphasize again that we INJECTED A MAN WITH PURE PLUTONIUM and he was fine. Nuclear waste is not the problem you think it is.
The sad fact is that nobody has correctly estimated how big a problem nuclear waste is. We keep having to pay more for it than any previous estimate predicted.
Fact is, the waste that everyone is worried about (used nuclear rods) is not actually waste. 90%+ of the energy is still in there. It's just that the dominant reactor technology isn't designed to extract it. It would be dumb to bury this energy. It would be better to reprocess it like France does or even better, build the kinds of reactors that can directly use it as fuel.
Then you're left with fission products that you can bury it several kilometers underground in a deep borehole using oil/gas technology. It will naturally decay away in 300 to 600 years. Remember, most industrial toxins are toxic forever. There is no amount of time that will render it safe, and we don't even particularly try to isolate it because there's so much. It is only for nuclear waste that we try so hard. And it's only feasible because there's so little of it. All the spent nuclear rods (civilian) the US has EVER produced in 70 years fits in a football field at 30 feet high. Meanwhile a single coal plant produces 1100 tons of just ash a DAY. Not to mention all the air pollution and greenhouse gases. A single plant.
The waste aspect of nuclear energy is amazingly convenient in comparison.
What on earth are you talking about? You realize you are full of alpha emitters?
> As stated above your 600 year timescale is off by close to three orders of magnitude
Nope, see this chart: https://whatisnuclear.com/img/ingestion-radiotoxicity-nuclea...
> you appear to be pretending groundwater either doesn't exist or can't move
That's why you bury it in rock where it doesn't move and we know it doesn't. Like the Permian Basin or where the Oklo natural reactors occurred in Gabon.
Oh yes, did you know nature formed fission reactors billions of years before we did ever existed? This always pisses off the hippies when I tell them. And guess what? The fission products from this natural process moved mere centimeters over 2 billion years.
This is a solved problem. It's just that some people desperately want it not to be.
Despite what the antis will tell you, the waste aspect of nuclear energy is overwhelmingly positive. And the crazy thing is, spent nuclear fuel isn't even waste. 90% of the energy is still in there. So why on earth would you bury it?
[1]:https://pbs.twimg.com/media/Fs4euEoWYAAx65C?format=jpg&name=... [2]:https://www.youtube.com/watch?v=B6no0FmPk84