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      CommentAuthorDuracell
    • CommentTimeJul 23rd 2021 edited
     
    Posted By: TrimIt should produce less waste.
    Everyone should …
    • CommentAuthorAsterix
    • CommentTimeJul 23rd 2021 edited
     
    The salient point is that most thermal- and fast-neutron breeders have been shut down and decommissioned. It was a global strategic/political decision mostly promoted by Jimmy Carter cite. A breeder can drastically reduce waste--but there's a problem.

    The problem is that with a breeder, production of plutonium is simple--and that's a problem as it involves nuclear proliferation.

    As I understand the science, you need a breeder to turn thorium into U233.
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      CommentAuthorTrim
    • CommentTimeJul 30th 2021
     
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      CommentAuthorTrim
    • CommentTimeAug 2nd 2021
     
    China Is Building a Thorium Molten Salt Reactor - Here's Why It Matters - YouTube


    https://m.youtube.com/watch?v=1EFfxMx6WJs
    • CommentAuthorAsterix
    • CommentTimeAug 2nd 2021 edited
     
    Regardless of the reactor technology, the issue is getting U233 from Th232. You need a neutron source. One option is a plutonium-thorium mix. Calling the energy-producing affair a "thorium reactor" is more than a bit disingenuous. It's still a uranium reactor; just uses U233 instead of U235.

    Instead of watching a video from some guy trying to get views, why not read an article from the WNA? Probably faster than sitting through an 18 minute video.

    Recall, also, that Jimmy Carter (later reinforced by Bill Clinton) pretty much terminated all breeder reactor activity in the US and pressured other nuclear nations to do likewise. Today, I believe that Russia operates the only two breeder reactors in the world. Heaven only knows what sort of shape those are in.

    I suspect that China is probably trying to fabricate an excuse to improve its nuclear arsenal. From WikiP:

    In 1994, the US government declassified a 1966 memo that states that uranium-233 has been shown to be highly satisfactory as a weapons material, though it is only superior to plutonium in rare circumstances. It was claimed that if the existing weapons were based on uranium-233 instead of plutonium-239, Livermore would not be interested in switching to plutonium.


    There's also the U232 contamination issue. So not exactly "safe".
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      CommentAuthorping1400
    • CommentTimeAug 6th 2021
     
    • CommentAuthorAsterix
    • CommentTimeAug 7th 2021 edited
     
    Looks like the US will be producing its own Mo99 for medical purposes

    Another blow for the CANDU reactor at Darlington. Although the Tc99m that I was injected with last year came from Oz. Or so I was told.
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      CommentAuthorTrim
    • CommentTimeAug 14th 2021
     
    Embracing Nuclear Power - YouTube


    https://m.youtube.com/watch?v=qDy1TyXT5hQ
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      CommentAuthorping1400
    • CommentTimeAug 14th 2021
     
    Why not talk economics? Nuclear power is currently about twice as expensive as renewables to build and operate.

    And, it takes 15 years to build a plant. A windfarm at sea of comparable production takes less than 2 years.
    Then there is the innovation. Solar and specially battery technology became 10x cheaper in the last 10 years. While nuclear power became more expensive and is still 1950th technology. By the time a nuclear plant is build, solar and batteries will be 50% cheaper again, making the nuclear power even 4x more expensive.

    Companies only invest in nuclear power when society takes over the insurance risk and decommissioning risk (formally or informally). And if government ensures an indexed flat kWh fee (at twice current market price).

    And what about scaling up? There is a whole infrastructure needed with enrichment facilities, radio active waste processing facilities, factories that can build the reactors, investors that are willing to pay, staff willing to work. Last year less than 1 GW of nuclear power was commissioned worldwide, while 250 GW of solar and wind was.
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      CommentAuthorTrim
    • CommentTimeAug 14th 2021
     
    We need smaller failsafe reactors or even better safer and cheaper batteries.

    Because renewables are not constant enough.

    Ideally aneutronic fusion.
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      CommentAuthorping1400
    • CommentTimeAug 14th 2021 edited
     
    • CommentAuthorAsterix
    • CommentTimeAug 14th 2021
     
    Posted By: ping1400Why not talk economics? Nuclear power is currently about twice as expensive as renewables to build and operate.


    Where does one get baseline power? Seems to me that PV is available only during daytime hours and is subject to the whims of weather, like wind power.
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      CommentAuthorAngus
    • CommentTimeAug 15th 2021
     
    Storage. Using a mythical technology not invented yet.
    • CommentAuthorAsterix
    • CommentTimeAug 15th 2021
     
    We can store it in The Cloud.
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      CommentAuthorping1400
    • CommentTimeAug 15th 2021 edited
     
    Offshore wind at North Sea has 5000 full load hours nowadays. Is nearly baseload.

    Imagine 80% of cars are electric with 75kWH battery. In the Netherlands that would give 500 million kWH storage (500 GWh). That equals more than 24 hours of the total national power consumption.

    Hydrogen imported in adapted LNG ships from solar rich countries. The gas distribution infrastructure in NL is tested to be able to be used for hydrogen. Also the LNG storages and underground seasonal storage (special old gas fields). The seasonal storage can provide for half of North West Europe.

    Increase the NL interconnection capacity with surrounding countries to balance out supply fluctuations. Currently there are HVDC cables operational with Norway, Denmark and the UK. Land connections with Germany and Belgium. Total interconnection capacity exceeds national demand. The interconnection with Norway provides remote (pumped) hydro capacity (in practice it is used for market arbitrage, Norway has almost constant prices, North West Europe has large price swings. The result is Norway exporting to NL when there is little wind/solar in North West Europe, and importing from the NL when there is a lot of wind).
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    Aneutronic fusion, deployed regionally by small stations sharing a grid, is clearly the holy grail here. Just add water and borax.
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      CommentAuthorAngus
    • CommentTimeAug 15th 2021 edited
     
    Another solution would be fewer people using less power to maintain a restrained lifestyle. That's the world where we seem actually to be headed. We just have to hope that "fewer"!=0.
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      CommentAuthorping1400
    • CommentTimeAug 15th 2021
     
    Posted By: Andrew PalfreymanAneutronic fusion, deployed regionally by small stations sharing a grid, is clearly the holy grail here. Just add water and borax.


    Yes, and we name it Orbo 3.0
  2.  
    Actually no - no we don't. Aneutronic fusion has little to do with the confidence tricks of some sad Irish git.
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      CommentAuthorTrim
    • CommentTimeAug 15th 2021
     
    Definitely the holy grail.

    Of course plain old fusion could just about pass.