- cross-posted to:
- nuclear@feddit.nl
- cross-posted to:
- nuclear@feddit.nl
Summary
France’s Flamanville 3 nuclear reactor, its most powerful at 1,600 MW, was connected to the grid on December 21 after 17 years of construction plagued by delays and budget overruns.
The European Pressurized Reactor (EPR), designed to boost nuclear energy post-Chernobyl, is 12 years behind schedule and cost €13.2 billion, quadruple initial estimates.
President Macron hailed the launch as a key step for low-carbon energy and energy security.
Nuclear power, which supplies 60% of France’s electricity, is central to Macron’s plan for a “nuclear renaissance.”
As others have mentioned, it isn’t for a practical reason. Nuclear is not that difficult to build. Look at China. Certain groups (funded by dirty energy companies) have pushed an idea that nuclear isn’t safe and had more and more bureaucracy and regulations pushed onto it. Sure, some is needed, as it’s also needed for other sources. Nuclear has been strategically handicapped though because they know it’d destroy their business if it’s able to compete on a level playing field.
The most unimaginably, but historically stupid thing was “green” activists protesting against nuclear power and for coal and gas.
And yes, nuclear power is very efficient. What makes it most efficient is the ability to very quickly regulate output, the improved logistics, and smaller reliance on beheading, culture-erasing, genocidal, revisionist savages getting everywhere.
Turning a reactor on and off is not as easy. They’re designed as baseload power that is meant to run continuously. SMR are the ones that are quick and responsive but those are always a couple of years away.
The ones in service right now are mostly/all designed that way, but that’s a design decision rather than an inherent limitation. They cost basically the same to run whether they’re at maximum output or minimum, so they’re most cost-effective as base load and if you need responsive output, you can probably build something else for less money. If you ignore that and build one anyway, you only need fast motors on the control rods and the output can be changed as quickly as throttling gas turbines, but there’s no need for that if you know you’re just building for base load.
Nuclear power plants aim to finely balance the reaction between delayed criticality - a very slow exponential increase in the level of radioactivity, and marginal sub-criticality - i.e. a very slow exponential decrease in the level of radioactivity.
To get faster exponential growth in power output than delayed criticality is physically possible - past delayed criticality is prompt criticality. However, fast exponential growth of radioactive output on time scales so short that machines cannot react is not something you ever want to happen in a civilian nuclear application; only nuclear weapons deliberately go into the prompt critical region, and an explicit aim of nuclear power plant design is to ensure the reaction never goes into the prompt critical region.
This means that slow exponential changes is the best the technology can do (and why plants need active cooling for a period of time even when shutting down - see Fukushima when their reactors were automatically shutting down due to the detection of an earthquake, but their cooling power infrastructure got flooded while they were decreasing their output).
I think the most promising future development will be more renewable capacity coupled with better long-distance transmission and batteries (ideally sodium when the tech is ready).
You’re not throttling between 0% output and 100% output, as that takes weeks or months, and instead throttling within a limited range at the upper end of the output power. Because a nuclear reactor puts out so much power compared to a combined cycle gas turbine, going down to 80% power has a comparable impact to totally shutting down a gas turbine. It doesn’t need to be instant to be used for dynamic load - throttling a gas turbine isn’t as it takes time for the heat exchanger to warm up or cool down after increasing or decreasing the fuel flow, and time for the first turbine to speed up or slow down after the flow of the Brayton-cycle coolant changes, and then more time for the second heat exchanger to heat up/cool down and more time for the Rankin-cycle turbine to speed up or slow down as the flow of steam changes, and only then is the new desired output power achieved.
Wikipedia puts the average emission time for delayed neutrons at fifteen seconds, which while ludicrously slow compared to a bomb, is really fast compared to the day-night cycle that represents most dynamic load variance in a country with plenty of renewables or heavy industry that doesn’t operate at night time, so there’s plenty of time for the power output to respond as long as you’re restricting the range that it’s operating in.
That said, now that solar and wind are cheaper, conservative politicians are finally pushing for nuclear, because 17 more years of building at 4 times the budget means more fossil fuels in the meantime compared with spending those government funds on solar and wind.
Nuclear isn’t safe. You should still not pick mushrooms in parts of germany because it isn’t. It’s an inherently dangerous technology, which you can only try to mitigate.
Nuclear can only work because it is heavily subsidized. If it had to compete on a level playing field, not a single plant would ever have been built in history, as they are uninsurable on the free market and no investor would touch them with a stick without huge government guarantees.
It’s the most expensive form of power generation there is, and in 2024 with renewables as good as they are it is just plain unnecessary to sink resources into this dead end.
By amount of power generated, compared to other sources, yes, it is, and it’s safer now than ever in the past. The only source of power safer is large-scale PV.
https://www.visualcapitalist.com/cp/charted-safest-and-deadliest-energy-sources/
https://www.statista.com/statistics/494425/death-rate-worldwide-by-energy-source/
If you want to disagree, provide some sources. Sure, some disasters have happened, but even those haven’t been as bad as portrayed and the risks have been significantly mitigated, to the point where it’s practically impossible to happen again outside of very specific circumstances. The fact you can’t eat mushrooms in some places in negligible compared to the entire world being damaged by coal and other dirty energy.
This is total BS. It’s only unprofitable for a few reasons only nuclear has to deal with. They have a lot more regulations and stuff they have to pay for. For example, all nuclear waste is contained and stored by nuclear power generators (in the western world at least). They have to pay for this. No other power source has to pay this cost. They just release the waste and it’s a negative externality everyone else has to deal with, but not them.
For a visualization of this, check out this graph from wikipedia:
(Edit: embed didn’t work for me at least, but this one.)
The cost of Nuclear went up over time, despite the technology advancing. Why? Because more regulations were passed to force it to cost more. That’s the only reasonable conclusion. It didn’t get more difficult to perform nuclear fission. It should, at minimum, be cheaper than coal and offshore wind.
A nuclear booster’s excuse dichotomy:
If someone says, “nuclear isn’t safe,” respond “nuclear is heavily regulated and perfectly safe!”
If someone says, “nuclear is comically expensive,” respond “that’s only because of regulation!”
You’re pretending I said something I didn’t. It’s perfectly safe because of all the safeguards in place. Some regulations are needed, but it’s over-regulated. Anyone who doesn’t have their head in their ass can see this. Nuclear power generators have to contain all of their fuel (and pay in advance for the privilege), meanwhile coal spews radioactive material everyone at no cost to themselves. Does that seem reasonable?
Nuclear has caused very few deaths and little damage relative to most other power sources. It is safer than ever and only getting safer. It’s a fantastic base-load power source. If you factor in storage to green energy (which I approve of too) it becomes even more expensive than nuclear. Nuclear doesn’t need storage as it can ramp up at any time. Green energy is great for peak-demand during the day, but when it’s not available or not sufficient, nuclear is an ideal option to make up for it.
Hey, you left out this Wiki page
https://en.m.wikipedia.org/wiki/List_of_nuclear_power_accidents_by_country
Yeah, this doesn’t say what you think it says. More people fall off of rooftops installing solar panels than casualties are caused by nuclear accidents.
Well I ain’t going to simp for nuclear, oil, gas or coal.
If you’re anti-nuke, you’re probably already simpling for oil, gas, and coal.
Fuck nuclear.
Fuck oil.
Fuck LPG.
Fuck coal.
Edit: wow, so many simping for the four above.
Also, fuck solar and wind because the waste they require right? Fuck batteries because they cause a lot of pollution to create!
I can say fuck all kinds of things. At least I pretend to have a reason. You can’t even be bothered to do that.
When people fall off a rooftop, you don’t have to make an exclusion zone around it for hundreds of years.
And you don’t need to for most nuclear accidents either.
I think that’s the point here. OP is claiming that nuclear is overburdened by regulations, which normally protects people. But when they go wrong or aren’t followed, it changes the map.
That OP is me. Yeah, you’re right. Some are required. The same for any other power source. Coal, for example, constantly sprays radioactive waste into the sky, and they aren’t burdened by it. Nuclear is singled out, and that’s because it’s a risk to existing industries. It isn’t so burdened out of actual need.
My gullible cabbage-eating friend, mushrooms are mostly safe to eat even around the Chernobyl station itself.
I mean, not now probably, there are landmines and rotting corpses and what not. But before 2022 they were.
And if you’d read something on the subject, you’d know it. Don’t be like flat-earthers and homeopathy proponents. Also “half-life” is not just a video game.
That’s not how it happened historically. Nuclear energy became more and more expensive due to regulations explicitly intended to press it out entirely. Just slowly.
People feared nuclear bombs and transferred that fear onto nuclear energy. It’s irrational.
Nuclear is subsidized? I think you’ve got that backwards. Renewables are HEAVILY subsidized in many places (rightfully so), nuclear isn’t.
Nuclear would be, in fact, the cheapest form of generation if you factor in storage which is a requirement for a functional grid based on renewables, and aforementioned regulatory handicaps weren’t in place.
A grid based on nuclear for the base load (the always-on stuff like various industries) + renewables is a far better solution than dragging on fossil fuels for longer and longer, or trying to make 100% renewables work with gigantic amounts of expensive storage.
Those mushrooms are pretty much completely safe to eat, but sure, keep burning coal instead.
The guy probably doesn’t know burning coal causes radioactive pollution too. All the time, not in emergencies, unlike with nuclear power.
I’m sorry, where in his post did they mention coal?