this post was submitted on 18 Apr 2025
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https://archive.is/2nQSh

It marks the first long-term, stable operation of the technology, putting China at the forefront of a global race to harness thorium – considered a safer and more abundant alternative to uranium – for nuclear power.

The experimental reactor, located in the Gobi Desert in China’s west, uses molten salt as the fuel carrier and coolant, and thorium – a radioactive element abundant in the Earth’s crust – as the fuel source. The reactor is reportedly designed to sustainably generate 2 megawatts of thermal power.

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[–] Tattorack@lemmy.world 18 points 1 day ago (4 children)

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.

[–] xor@lemmy.dbzer0.com 7 points 1 day ago (14 children)

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….

[–] cdkg@lemm.ee 8 points 1 day ago (1 children)

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)

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[–] Rakonat@lemmy.world 1 points 23 hours ago (1 children)

Tell me you don't know anything about nuclear energy without saying you don't know anything about nuclear energy.

[–] xor@lemmy.dbzer0.com -1 points 21 hours ago (1 children)

you don’t know anything about nuclear energy

[–] Rakonat@lemmy.world 0 points 19 hours ago (1 children)

I know enough to know that if you're worried about pollution from Nuclear then you should be worried about all the waste products in production of solar panels which can be extremely toxic. And that if you're specifically talking about the amount of radiation a megawatt reactor will produce in it's life time you should never venture anywhere close to a coal burning plant because the amount of radioactive material they let loose into the atmosphere is orders of magnitudes greater than you could get from a uranium reactor, with thorium reactors being predicted and shown in small scale testing to have significantly less dangerous byproducts left over. With several theories and proposed designs for fusion and thorium reactors that could recycle spent fuel and further reduce the amount of high level waste a facility would have at the end of it's life cycle, because unlike all other forms of energy generation, the nuclear facilities contain and keep their waste products on site for decades and only transfer it off site during decommissioning.

[–] xor@lemmy.dbzer0.com 0 points 12 hours ago

you don’t know anything about nuclear energy

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[–] drmoose@lemmy.world 7 points 1 day ago

Remember when it was all the hype when things just started - crazy to see it actually happen

[–] PattyMcB@lemmy.world 16 points 1 day ago

Thanks for the archive link, OP. Shit that site was cancerous

[–] AI_toothbrush@lemmy.zip 51 points 2 days ago (53 children)

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.

[–] Litebit@lemmy.world 1 points 16 hours ago

You hate China government, not the chinese government.

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[–] SirEDCaLot@lemmy.today 270 points 3 days ago (19 children)

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.

[–] Litebit@lemmy.world 1 points 16 hours ago

interesting, india has 25% of known deposits, thorium reactors would be very useful for them. https://www.worldatlas.com/articles/list-of-countries-by-thorium-reserves.html

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