• gwl [he/him]@lemmy.blahaj.zone
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    17 hours ago

    Pro, I think a lot of the anti-nuclear sentiments are leftovers from when nuclear power was not as heavily regulated as it is now.

    Now it’s basically impossible for a meltdown except for if a literal natural disaster happens, and sometimes even then

    And it’s a very clean energy source, with the one problem of what to do with the radioactive waste, but there is far less waste than fossil fuels, and it’s easier to get rid of.

    • Brave Little Hitachi Wand@feddit.uk
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      17 hours ago

      I’m nominally pro, or maybe passively anti while cheaper, more scalable, and cleaner sources are at hand. If you’re already going full wind, solar, and geo and there’s still a rationale for a nuclear plant, I’m open to it. But that’s a big fat if.

      • gwl [he/him]@lemmy.blahaj.zone
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        17 hours ago

        The thing with nuclear power is that it’s FAR easier to convert a fossil fuel generator to nuclear than it is to convert it to green or to build a new one.

        And yes, I agree, we need more green, but we first need to kill off all the fossil fuel options.

        • wizzor@sopuli.xyz
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          14 hours ago

          Although you are right in the sense that nuclear produces steam, I am not aware of any instance of this having been done. The steam turbine is such a small part of a nuclear plant.

          In my view nuclear is best as a baseline production and heat production method. The baseline part may reduce as grid batteries smooth out the volatile production of the renewables.

        • Brave Little Hitachi Wand@feddit.uk
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          15 hours ago

          As a society, it’s easier to do everything at once rather than one thing at a time. Edit: The difference with nuclear is that it’s so much more expensive than other green options that spending on it now takes significant potential kwh out of the grid if it is given equal funding priority.

  • LeonineAlpha@sh.itjust.works
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    13 hours ago

    All reactors are subject to overheat leading to meltdown when suddenly shutdown. They become massive energy vampires, requiring huge cooling power (and manpower) for up to 2 years after to avoid that.

    What are the odds that a “social collapse” (war, plague, disaster, etc) leaves some with no workers and no external juice? Not if, when! Meltdowns will occur, some will breach containment. Only fools light an unextinguishable fire that kills them if they ever stop feeding it.

    While reactor designs are “safe”: this requires that they follow protocols, which often means unplanned downtime. Given the social pressures for energy, it seems that reactor operators will sometimes disobey shutdown requirements. Corruption is real in all societies. With reactors it absolutely includes a non-zero catastrophe chance. Again not if, when!

    Reactors are safe, for a pre-designed lifespan. Often 50 years. To decommission properly is massively expensive and takes years of labour, and requires a replacement plant. Are operators actually squirreling away the funds to have this all saved up 50 years later (by “overcharging” now)? Or are the future governments just gonna keep patching a pig… not if, when!

    What kind of containment system will work for 10s of thousands of years? What does that cost, or even look like?

    https://www.damninteresting.com/this-place-is-not-a-place-of-honor/

    • Doomsider@lemmy.world
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      4 hours ago

      All this only holds true for traditional large scale commercial reactors.

      Newer large scale reactors designs don’t require any power to cool once the reaction is shutdown (which is automatic if power is lost) and will not melt down if a loss of power happens.

      Dedicated trust funds help pay for shutdown and yes, a new reactor would need to be built. This cost is significantly less than oil, gas, or coal over the long-term. Upfront cost with nuclear are higher, but only because of the large scale projects we currently utilize.

      As far as containing nuclear waste.

      https://en.wikipedia.org/wiki/Onkalo_spent_nuclear_fuel_repository

      Sounds like a burden? Let me ask you how they control the pollution from Gas, Oil, or Coal. Trick question, they don’t really control it at all except for some scrubbing. Please realize that 250,000 people die (low estimate) from pollution related to power generation every year.

      So every year non-nuclear fossil based power generation is killing a quarter of a million people. I would like to hear how you logically deal with this in your argument against nuclear.

  • Resonosity@lemmy.dbzer0.com
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    13 hours ago

    I’m nuclear neutral.

    Nuclear is a great resource and we should try to keep all plants that are online today online.

    However, expansion of nuclear in the corrupt, finance-capital USA should be deprioritized in favor of renewables and storage. The latter has insanely fast construction times and can be deployed much faster than new nuclear. We’re racing against the clock to transition our society away from carbon polluting activities, and renewables present the greatest opportunity to cut down the largest emitting section: fossil fuel power.

    Long term I think humanity needs to invest in more fission and definitely fusion, but we’re in a climate crisis and need solutions now.

  • aldhissla@piefed.world
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    20 hours ago

    Pro. If you consider how absolutely minuscule the risks are (keep your regulatory bodies free of corruption, guys), all political criticism looks uninformed and performative, answers in this thread included.

    Imagine an anti-vaxx hippie: presents as progressive, gushes of pointless contrarianism, easily exploitable by the estabilishment*. That’s how I see the nuclear power-“critics”, both here and elsewhere.

    * E.g.: I consider the Green Party of Switzerland the epitome of counter-productive performative idiocy ever since they’ve been campaigning for replacing our NPPs with gas turbine plants. Fuckin’ 🤡s the lot of them.

  • kalleboo@lemmy.world
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    14 hours ago

    I’m a fan of nuclear technology. Any plants working today should be maintained indefinitely, and in places that don’t have any options due to geography building new ones today makes sense. And hopefully those investments can help make nuclear tech cheaper in the future with SMRs, etc.

    That said, anywhere that is still burning fossil fuels on a nice sunny day should be investing all their energy money into building renewables. It’s such an amazingly cheap and quick way to replace fossil fuels. Each panel hooked up is instantly displacing fossil fuels being burnt. And once you have enough solar to cover the daylight hours, you’re going to be overproducing during the brightest hours and that will induce people to hook up batteries to profit from the “free” energy and now you’ve solved the duck curve hours.

    I also have some reservations about humans being responsible enough. I live in Japan and do not trust that the energy companies have learned anything from Fukushima, they’re just doing as little as possible to cover their asses. The end of Pax Americana and the rise of Climate Change unrest will also increase terrorism risks. It’s not bad enough that I’m saying don’t build nuclear, but I feel it’s still enough of a risk that renewables should be preferred when possible (of course new tech mitigates this to some extent with safer spent fuels and smaller reactors). Just decentralizing the grid so that homes can generate their own power after storms is a huge win with renewables.

  • bountygiver [any]@lemmy.ml
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    18 hours ago

    Pro, but renewables do deploy way faster so we do want those renewables to be running while we wait for the nuclear plants to be constructed.

    Turning off fossil fuel burning plants is the priority

  • I used to be anti-nuclear in the past but I realized a lot of the talking points were either wrong or directly favoring the fossil fuel companies. 100% for Nuclear and renewable energy.

  • Tiger_Man_@szmer.info
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    1 day ago

    yes. its stable and powerful, you cant rely entitely on renewable energy because sun does not always shine, wind does not always blow and hydro-electric outputs too little power compared to the damage caused. you also cant rely on coal because youre going to fucking die

  • jaykrown@lemmy.world
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    1 day ago

    I am pro nuclear energy. It’s the most efficient way to generate sustainable electricity in abundance in the smallest amount of space.

    • rafoix@lemmy.zip
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      1 day ago

      We’re not running out of space. That’s a strange thing to use as a decider.

    • Kairos@lemmy.today
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      1 day ago

      Same opinion here. It’s basically a gas well boiler plant without the CO2. The reason we don’t have more of it is due to politics surrounding transporting nuclear waste.

  • davetortoise@reddthat.com
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    2 days ago

    Context: I’m currently doing a PhD in nuclear engineering

    Hard-line advocates of nuclear power usually point to its role as a ‘baseload’ generation, but this term is often misused. A lot of people use it as if it means “reliable power on demand” as opposed to wind and solar which is not (without batteries). But baseload generation generally refers to plants with unvarying output that provide the minimum energy consumption of the grid, so that other (varying output) energy sources can be turned up or down to make up the deficit.

    The “unvarying” part is very important for nuclear power. Conventional nuclear plants (PWRs/LWRs) really hate when you vary their power output. This is because varying heat and radiation flux through the fuel rod cladding causes a “racheting” effect which accelerates the swelling of fuel pellets against them leading to formation of cracks in the surface oxide, which can propagate into the bulk metal if power goes up and down too often, leading to rupture of the fuel rod cladding (which is bad). Anything below 85% power output for longer than 2 weeks is classed as extended reduced power operation (ERPO) and should be minimised - typically it is done for maintenance purposes.

    This is important because it influences how much of your energy production can actually come from nuclear. France for example generates something like 75% of its electrical power from nuclear, but this is only possible because they are surrounded by countries which import a lot of energy (i.e. Germany and the UK), so they can offload excess power there and avoid putting their plants into ERPO. If Germany and the UK had similarly high amounts of nuclear, the system would not work and a lot of plants would experience reliability issues.

    All this is to say, nuclear is an excellent energy source for making up a large, unvarying chunk of energy production (say, ~30%) but anything much more than that can cause more problems than it solves. One power source which can provide reliable on-demand time-varying energy is… batteries! Which is one of the reasons that recent advances in battery + solar are so exciting to me. A power grid made up of solely nuclear and renewables working together to meet time-varying demand is now completely plausible. So we dont have to choose between nuclear or renewables per se, we just have to deploy each in a way that suits its own merits.

    • alsimoneau@lemmy.ca
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      13 hours ago

      What about nuclear + storage (pumped hydro, batteries) then? That should let you up the baseload a bit right.

      • davetortoise@reddthat.com
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        12 hours ago

        Absolutely! Though in practice battery storage tends to be more economical with renewables as the excess is higher (so electricity is cheaper) and storage time is shorter (as upping nuclear baseload would require you to account for differing long-term demand between seasons)

    • Souvenir@lemmy.dbzer0.com
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      2 days ago

      Might I just add that nuclear isn’t exactly dealing with climate change and water shortages that well.

      It’s something I never really thought about, but plenty of nuclear plants have faced climate related issues in recent years, and been forced to shutdown or reduce output.

      Also, in an age of drone warfare, decentralised power production is potentially also a huge plus.

      • davetortoise@reddthat.com
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        2 days ago

        This is true. We hear about it happening a lot in mainland europe because there are a lot of inland reactors relying on rivers/reservoirs, however coastal reactors aren’t vulnerable in the same way. Climate change certainly isn’t making nuclear obsolete, but it definitely changes the way we need to think about cooling systems

        • Souvenir@lemmy.dbzer0.com
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          1 day ago

          Of course, coastal reactors are vulnerable in other ways. Climate change can exacerbate extreme weather events. It’s the annoying thing about lots of stuff, you only really find out what goes wrong, when it goes wrong.

          Unknown unknowns, as some arsehole once put it.

          Also, coal contains small amounts of uranium and thorium which gets concentrated in the fly ash. Fly ash which then gets spread across the area surrounding the power plants. So I’m certainly not saying nuclear is obsolete or particularly dangerous compared to alternatives like coal.

  • ooo_shiny@lemmy.nz
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    1 day ago

    At this rate, I’m grateful for anything that isn’t burning fossil fuels.

    I’d rather see solar and wind power though.

  • absGeekNZ@lemmy.nz
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    1 day ago

    As someone who has done quite a bit of work on power systems (in the New Zealand context) recently.

    You have to consider any energy generation technology in the environment it is going to be deployed in.

    Whilst I am generally pro-nuclear; as a technology. It doesn’t really work as a deployable energy system in comparison to other forms of generation; especially here in NZ. There are three main reasons for this:

    • Cost in both time and money to construct nuclear is far too high.
    • Industry to support nuclear doesn’t exist in NZ. Expert techs, operators, fabricators etc are not here; we would need to build an industry alongside building the first plant.
    • Regulatory framework to enable nuclear generation is almost nonexistent. We have medical isotope framework; as a basic way to work with radiological material.
    • Bonus challenge; we would have to import all the fuel.

    Countries with existing nuclear industries and power plant have a much easier time; but when comparing the cost in time and money to get the first GWh out of a nuclear generator; it is a hard sell.

    One major advantage nuclear has over other forms of generation is physical footprint; effective power density is absolutely massive. To get similar power density in renewable generation, the only thing close would be the in development supercritical geothermal power; though nuclear would still have higher power density and is not geographically constrained.

    Maybe things will change in the future. Maybe small modular reactors will eventuate in an easy to deploy way; or the developments in Chinese thorium reactors will pan out to a viable generation tech. But technology is not the only stumbling block that nuclear energy faces; especially in a small country that doesn’t have an existing nuclear industry.

    I know there is a lot of money being thrown at fusion; and that may change the game entirely, it is an interesting time to be looking at energy systems.