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submitted 1 week ago by fossilesque@mander.xyz to c/science_memes@mander.xyz

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[-] Tar_alcaran@sh.itjust.works 14 points 1 week ago* (last edited 1 week ago)

There's a really simple answer to the waste problem though. And it's super, blatantly obvious.

All nuclear material is basically ground up rocks that we dug out of a hole and then filtered the spicy bits out of. So grind it back up, pour it into concrete and stuff it back down the same hole it came from. Of course, you can't legally do that, but that's only because we have a ton of rules what constitutes safe disposal, etc. Recreating the original conditions basically meant you're (re)creating something unsafe, but we do that in a LOT of places.

EDIT: For example there are regions in Belgium and the Netherlands where there is so much naturally occuring arsenic in the ground, that if you scoop a bucket full of dirt, walk 50 meters across the provincial border and put pour it out, you're comitting (at least) three different crimes. That's legally valid, after all, the bucket contains polluted material, but practically nonsense since you literally just picked it up, and it's been like that long before people ever got there.

[-] gandalf_der_12te@discuss.tchncs.de 2 points 1 week ago* (last edited 1 week ago)

fair argument

I want to add something to it:

First of all, a lot of that uranium seems to have been there and slowly decaying for a long time. I think, what we humans did was to "wake it up" and turn it into some more violently-reacting other elements, for the sake that we get the energy out of it at an acceptable pace. Now, though, it's severely more dangerous than it was before.

Also, I've an idea about what to do with the waste: Since the waste tends to activate itself due to neutron activation, put a lot of it (but just barely not enough to make a bomb) together and it will activate itself to react violently at very high speeds, but just barely not fast enough to explode (make a bomb). That way, you can get a lot of heat out of it rather quickly, and are left with burned-out material (which contains less radioactive potential).

[-] KillingTimeItself@lemmy.dbzer0.com 3 points 1 week ago* (last edited 1 week ago)

First of all, a lot of that uranium seems to have been there and slowly decaying for a long time. I think, what we humans did was to “wake it up” and turn it into some more violently-reacting other elements, for the sake that we get the energy out of it at an acceptable pace. Now, though, it’s severely more dangerous than it was before.

it's weird, but it's not "more violent" it's just more energetic. Either through enrichment, making it more potent, which is an industry standard across the entire western world. Or through making fertile material, like uranium 238, fissile by going through the decay chain until it becomes something more spicy, like pu 239 or whatever.

The big problem is that the energy it releases is definitionally incompatible to human life. That's the ONLY problem.

oh and btw, nuclear reactors are physically incapable of "going critical" it's physically impossible. 90% of the concern is it breaking containment from being really fucking hot, which is notably, really hard to deal with.

[-] gandalf_der_12te@discuss.tchncs.de 2 points 1 week ago

Or through making fertile material, like uranium 238, fissile by going through the decay chain until it becomes something more spicy, like pu 239 or whatever.

Yeah that's what i meant.