This is a most excellent place for technology news and articles.
Refreshing not to see the comment section full of anti-nuclear brainlets. For a second I thought Lemmy was a Greenpeace hot-spot.
Anyway...
One good turn deserves another. If others won't follow because of good example, hopefully other countries will instead follow because of competition.
green peace is cool and all, but nuclear the only way forward, other than asking everyone nicely to use much less energy…
and supposedly the new molten salt thorium reactor design automatically shuts itself off and basically can’t have a meltdown… if that’s real it’s a great way forward….
well, except for all the nuclear waste, but i’m sure they’ll figure that out too….
Yeah, thorium reactors can't meltdown because they need to constantly being powered by thorium, sick you can find anywhere. There's a 2008 or so bill gates Ted talk on nuclear power that talks about it. For better or worse, china is going to lead the world regarding energy (and economy, seeing all those trump tariffs)
i did see that TED talk… i saw someone say that’s just the reactor design that’s safe, and uranium couldn’t melt down in that type of reactor either….
but that was just some comment and i’m not qualified to speculate on it… but meltdowns are the biggest problem with nuclear, imo….
i think we should just dump all of our nuclear waste off the coast of japan… and hopefully generate some kaijū
Radioactive nuclear materials comes from the Earth. All one has to do is put it back in the Earth. Finland built a massive underground nuclear waste storage facility, but there are also technologies being developed to reclaim nuclear waste (because only a very small amount if the material actually gets used in the fission process).
pretty sure it’s not so simple….
For the amount of actual nuclear waste, it kind of is. Earth is so huge and the amount of waste so small, that you could bury literally ALL of it under a mountain somewhere and chances are high that it would never see daylight again nor would never be found by anyone in the future.
Even despite this, extraordinary measures are taken to make sure nothing escapes the containment until such time that Earth's crust has completely rolled down into the mantle or the mountain erodes, which by then it wouldn't be nuclear waste anymore.
We need to store the waste for thousands of years. This is bad. We are able to recycle the waste for more power but we're not allowed to because it produces a tiny bit enriched uranium and that's not allowed by the pact the US and Russia made. But recycling waste is tech from the 70's and it can reduce the half life of 100.000 years to 100 years.
Thorium however, is a different story. It doesn't work with gamma radiation but with alpha radiation. Alpha radiation is the most dangerous form of radiation, but it doesn't go far and doesn't go through many things. You can contain it with a piece of paper. Gamma radiation is the least harmful form of radiation but the big issue is it goes really far and goes through almost anything.
So waste from a Thorium reactor is much less harmful, easy to contain, also has a very short half life (I don't know how long but it's really short, as in several years) so Thorium really is awesome. Thorium is also a waste product of many other mining operations so it's already a form of recycling. The downside of a Thorium reactor is that it's far more complex than the reactors we know so it's very hard and expensive to build, more than a regular reactor. So it will cost a lot, takes a long time, but it's an extremily safe and wise investment.
Remember when it was all the hype when things just started - crazy to see it actually happen
Thanks for the archive link, OP. Shit that site was cancerous
Me opening the comment section knowing that its just gonna be a bunch of racism... like i get it i hate the chinese government as well but give credit to the millions of scientists and people who are actually trying to make life better on this earth. If something isnt american, it can still be nice to have.
I’d like to thank the thorium. Great job guys! All around, great stuff!
Good news, mankind should be pushing farther into this technologies.... so we finally have our first gen IV reactor? I honestly thought we would never reach them on time.
Plus Thorium rocks
For anyone not familiar with thorium...
Thorium is a great nuclear fuel. Much much safer than the uranium we currently use, because the reaction works best only within a narrow temperature band. Unlike uranium which can run away, a thorium reactor would become less efficient as it overheats possibly preventing a huge problem. That means the fuel must be melted into liquid to achieve the right temperature. That also provides a safety mechanism, you simply put a melt plug in the bottom of the reactor so if the reactor overheats the plug melts and all the fuel pours out into some safe containment system. This makes a Chernobyl / Fukushima style meltdown essentially impossible.
There are other benefits to this. The molten fuel can contain other elements as well, meaning a thorium reactor can actually consume nuclear waste from a uranium reactor as part of its fuel mix. The resulting waste from a thorium reactor is radioactive for dozens or hundreds of years not tens of thousands of years so you don't need a giant Yucca Mountain style disposal site.
And thorium is easy to find. Currently it is an undesirable waste product of mining other things, we have enough of it in waste piles to run our whole civilization for like 100 years. And there's plenty more to dig up.
There are challenges though. The molten uranium is usually contained in a molten salt solution, which is corrosive. This creates issues for pipes, pumps, valves, etc. The fuel also needs frequent reprocessing, meaning a truly viable thorium plant would most likely have a fuel processing facility as part of the plant.
The problems however are not unsolvable, Even with current technology. We actually had some research reactors running on thorium in the mid-1900s but uranium got the official endorsement, perhaps because you can't use a thorium reactor to build bombs. So we basically abandoned the technology.
China has been heavily investing in thorium for a while. This appears to be one of the results of that investment. Now this is a tiny baby reactor, basically a lab toy, a proof of concept. Don't expect this to power anybody's house. The point is though, it works. You have a 2 megawatt working reactor today, next you build a 20 megawatt demonstrator, then you start building out 200 megawatt units to attach to the power grid.
Obviously I have no crystal ball. But if this technology works, this is the start of something very big. I am sure China will continue developing this tech full throttle. If they make it work at scale, China becomes the first country in the world that essentially has unlimited energy. And then the rest of the world is buying their thorium reactors from China.
The resulting waste from a thorium reactor is radioactive for dozens or hundreds of years not tens of thousands of years so you don’t need a giant Yucca Mountain style disposal site
That is assuming they don't make significant amounts of Fe-60 (2.6 My half-life) by exposing steel pipes to neutron flux. While the fuel itself might have a shorter half-life, other waste still needs to be dealt with.
