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I'm not sure I believe that regulation is the reason why we don't have fission. US has more fission power by GW than China and so does France. France's electricity mix is actually 70% fission and is dealing with various climate change related problems such as being unable to run the reactors in the summer because the water level is so low in the various inflow rivers to the nuclear power plants can't be used for steam generation. Even with a government that doesn't give a shit about safety regulations (China and the Soviet Union) fission clearly actually isn't that effective of a technology. Fission has actually declined as a share of China's energy mix recently (probably because of build out of solar), so I have a hard time believing it is a wunderkind energy source. @FirmWeird has posted a lot about this in this in the past.
I have, and I have eaten numerous downvotes for it. My point has always been that nuclear energy has too low an EROEI to be a viable answer to the energy needs of a modern industrial society, and I haven't seen any convincing evidence to the contrary. France's nuclear system was only viable because they got their uranium for cents on the franc from Nigeria, and even then it ran out of money and had to be restructured when I was posting about it last. This doesn't necessarily mean that there's no place for nuclear power - having a source of power that isn't reliant on fossil fuels could prove to be particularly useful in a future where fossil fuels are harder to come boy or the Middle East is in a state of war. Similarly, nuclear submarines which don't actually have to make enough money to justify their continued existence but place a huge emphasis on the density of their energy source are another good use for them. If China actually manages to get those molten salt reactors working, that would be fantastic as well. But right now I haven't seen any convincing evidence that nuclear power is a sustainable answer to the depletion of fossil fuels - and a large graveyard of failed attempts.
This is the reason why France has the nuclear system it does- it was de Gaulle's baby precisely because the US doesn't have French (or European) interests at heart. France was under [his] military dictatorship at the time, which helped get things moving.
He was right, of course; both in 1973 with the US-caused oil shortage and then in 2022 with the US-caused LNG shortage.
It's not so much that as it is completely obviating the need to resupply with fuel. And, especially relevant for submarines, nuclear power functions even with a complete lack of oxygen, so doing that is a no-brainer.
It's the only alternative that can work anywhere on the Earth's surface on a calm, cold night. Lighting a fire is the classic method to get energy at that time, but "magic hot rock" is fine too.
I once heard stated that the reason it's difficult to get good output from nuclear is because they simply can't run the reaction hot enough- hence the emphasis on exotic coolants (molten salt, etc.)- whereas with LNG the exhaust heat is sufficiently hot that you can heat the steam driving a secondary turbine to the point where it's very, very efficient. Of course, because we want to reserve the right to quench the reactor if it gets too hot for... certain reasons, we'd like a coolant that doesn't make the problem worse if we do that. At least with LNG you can turn the gas off and the reaction will stop.
"Work" is the key sticking point here - does it provide enough energy to pay for itself? To pay for the extraction of the raw material from the ground, refinement into usable fuel pellets, transportation to the plant, the construction of the plant, the lives of the people who run it and then on top of that provide usable power for the rest of the society that sustains it? The answer is, at present, "No."
That's the entire basis of my objection - even if you just handwave away the problem of storing dangerous radioactive waste that lasts for millenia and hope it doesn't leak into the rest of the environment, nuclear just can't pay for itself. Every single existing nuclear program I'm aware of is made viable on the basis of government subsidies or exploitation (i.e. the hilarious prices France paid for Nigerian uranium). Every single proposed nuclear program that doesn't have these problems (fusion, molten salt, thorium, etc) is 20 years in the future, and has been 20 years in the future for the past 60 years.
China actually started up a molten salt 'thorium' (eg, starting with uranium, then moving to thorium) reactor last year, with the first full thorium cycle this November. I'm not optimistic about its effectiveness, but that's more because it's a lot more complicated than it needs to be, rather than net energy or net cost problems.
A lot of the various cost problems with nuclear plants reflect political willpower, rather than actual material costs. That's most serious in the United States where we've intentionally made them several times harder to produce at the same time that the control and construction technology has gotten much much better, but most western governments have done something similar. (or just had politicians launch rockets directly at the construction sites.)
There's a revealed preferences sense where, if you can't solve those political problems, you can't produce power at price, and it's not entirely wrong. But it's misleading to treat it as a physics problem.
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Then nothing is cost-effective except for fossil fuels and hydroelectricity, ultimately.
But we already knew that; that's why banning their use is such a powerful socioeconomic weapon. Nuclear just happens to be both the closest you get to viability (since the plants from the '70s and '80s seem to be doing just fine; that was back when construction and labor were way cheaper though) and something that's arguably worth funneling research dollars into from a materials science perspective.
This line always frustrates me because this is an isolated demand for rigor. Mine drainage (and it is a rather interesting flex that a modern mining company saw fit to name itself after the most expansive environmental mining disaster zone in human history- that being the Rio Tinto, which is what that's a picture of) will kill future Fred Flintstone far more quickly than anything else will. Fortunately, we discovered radioactivity before we invented the backhoe.
And I get that you have to convince John Q. Public of that, who will never come around in their lifetimes thanks, ironically enough, to radiation exposure (they sat too close to the TV while watching Simpsons reruns). Which is why you basically can't do this until you have a military that will deal with that.
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I'm one degree removed from the industry and I'm sorry, but regulation => cost is the reason why we don't have more fission.
Then why doesn't China have more fission? Hell, since the US is so rich in fossil resources: why didn't RUSSIA ever get more fission?
Over five percent of China's power comes from fission plants, and that's underrating it since they've got very high uptime compared to on-demand plants. As for why it hasn't scale up faster, China's political classes had very obvious mixed feelings about dependence on foreign-produced infrastructure for a long time, which only went harder once . While they've theoretically had 'domestic' production of nuclear plants since the mid-90s, they didn't actually manage serious production of the CNP-600s until 2010-2012... at which point the Fukushima disaster and its political fallout lead them to go back to the drawing board and start the production cycle again.
But they've put >3 GW of fission power online just in the last year. As bad as their political situation is for power construction, it's still beating the west's.
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Russia has quite a lot of nuclear power, which is remarkable considering that, as you say, they care minimally about the environment and have abundant access to fossil fuels. Further, it's worth noting that the more civilised European parts of Russia are the parts with the most nuclear power, comprising around 40% of their generation.
If nuclear power is competitive with Russian fossil fuels, that means it's pretty darn cheap!
China doesn't have much nuclear power at present, but they are investing an enormous amount in building plants, and their forecasts are that it will quadruple in proportion of their energy supply over the next 25 years--and that's with the buildout of other energy sources!
Looks like I'm wrong about Russia! They have actually an increasing share of nuclear power as a percentage of total electricity mix and are building a number of new power plants that will be online later this decade!
Quadruple nuclear still puts China at only 20% of electricity from nuclear which is comparable to Russia right now. This does represent a big difference from the US still, but I'm not sure it will be enough. What we need to start seeing is a decline in the total amount of fossil energy in the electricity mix, which we haven't even seen in Russia. I actually don't think we've seen this anywhere except for maybe Germany/UK, but the renewable buildout in those locations has obvious problems of intermittency.
Nuclear is better than I thought though, so I stand corrected.
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