AFAICT this article offers no dates, no numbers, and no primary sources. China did announce a thorium research program back in 2011, and continues to publish research, but I don't see any notable recent developments reported on other sites.
The IAEA does not currently list any reactors matching this description in operation or under construction in China:
World Nuclear News does not have any recent stories about Chinese thorium reactors.
Is this article just a rehash of old news? Or has a Chinese thorium reactor achieved criticality recently? Videos of simulations and 3D renderings are a dime a dozen. New reactor concepts are interesting only when someone operates real hardware. China can do so but there's nothing in this article that makes me think it has just done so.
>[late 2017] China Academy of Sciences and the government of Gansu Province signed a co-operation agreement to work together on China’s Thorium Molten Salt Reactor (TMSR) project and to have a demonstration or research reactor built in Gansu Province by 2020.
>The total investment was planed to be 22 billion CNY (3 billion USD)
Right, some other documents I found indicated that there would be a research reactor scheduled for 2020. But the documents I found about it were from before 2018. I couldn't understand why this story was published in August 2018. There doesn't appear to be anything new happening right now. The next interesting development will be when the research reactor actually starts up, hopefully in 2020.
You can try googling "Chinese TMSR Strategic Pioneer Science and Technology Project site:sinap.ac.cn" and "TMSR site:sinap.ac.cn". Or even just "thorium site:sinap.ac.cn".
[Nov 2017] "Bill Gates' nuclear firm TerraPower and the China National Nuclear Corporation have signed an agreement to develop a world-first nuclear reactor, using other nuclear reactors' waste"
TeraPower is a clever attempt at a fast reactor using uranium/plutonium fuel. We have had various fast reactors (commercial and research) since the 70s. IIRC they tend to be very twitchy, and have proliferation issues.
Thorium reactors, a.k.a LFTR, a.k.a. "hope-ium" are still very much on the drawing board. They have some nice properties (stability, safer, liquid based).
p.s. I am pro renewable. Nuclear will comeback around 2050 when we run out of space...
India has made an explicit decision not to sign the nuclear non-proliferation treaty (NPT). As a member of the Nuclear Suppliers Group, Australia is supposed to export only to countries that have signed the NPT. An exemption has been granted to India. This means India is receiving uranium from Australia, but its facilities are not subject to the full range of inspections required under the NPT. It's reasonable to assume that India will go as far as it can in its role as a non-signatory to the NPT.
Essentially India said "trust us", and Australia said "show us the money."
Not only do we have low assurance that Australian uranium won't end up in weapons, but indigenous sources of uranium can now be dedicated 100% to weapons, instead of being shared with energy production. There is also the use of neutrons from 'energy uranium' being used to produce tritium from lithium-6, which is essential for producing fusion boosted and thermonuclear weapons.
I guess you're right under the definition of proliferation being a new nation gaining nuclear weapons. I was thinking of proliferation, in the sense of their being more nuclear weapons, even if it doesn't involve a new nation.
I don't see any reason why countries committed to nuclear non-proliferation should endeavour to make weapon production cheaper. In fact, they should have to decide between peaceful uses and weapons of mass destruction.
Speaking only about U233, produced in the thorium fuel cycle: it's been used in composite fission cores in several tests by USA and (then-) USSR. There may have been one small test of an unmixed U233 device by India. [1]
So maybe U233 could be used to make a weapon. I don't know whether that possibility makes it a big proliferation risk or not.
>Thorium/breeder reactors don't work for large booms
Thorium breeder reactors in fact will work just fine for big booms by selectively producing protactinium-233 and then running it through a couple of decay and chemical separation cycles.
Consider that the world's first commercial nuclear power station, Calder Hall at Windscale, England, was opened in 1956¹, has there ever been a nuclear material used as a weapon other than the obvious two and conventional depleted uranium armour piercing projectiles?
If you're going to count DU shells as nuclear proliferation, you should also count Po-210 poisoning (Litvinenko, and perhaps others) and that guy who poisoned his gf with I-131.
Though, when talking of nuclear proliferation, we almost always mean just the proliferation of nuclear and thermonuclear explosive devices.
North Korea used a power reactor to produce all of the Plutonium for its nuclear explosive devices, some of which were supposedly of a weapon form-factor have been used. If by "used" you mean "used in anger", then of course, there are only the two instances. (It also should be noted that in the context of nuclear reactors and proliferation, Little Boy is only tangentially related. Nuclear reactors weren't used in the production of Little Boy.)
The IAEA does not currently list any reactors matching this description in operation or under construction in China:
https://pris.iaea.org/pris/CountryStatistics/CountryDetails....
World Nuclear News does not have any recent stories about Chinese thorium reactors.
Is this article just a rehash of old news? Or has a Chinese thorium reactor achieved criticality recently? Videos of simulations and 3D renderings are a dime a dozen. New reactor concepts are interesting only when someone operates real hardware. China can do so but there's nothing in this article that makes me think it has just done so.