Comments by "David Elliott" (@davidelliott5843) on "Joe Scott" channel.

  1. Charles Okonkwo Fukushima happened because light water reactors are fundamentally hazardous. The molten salts have no pressure vessel and as the fuel is molten they cannot melt down. If the reactor gets too hot the salt expands and the traction slows. The worst case would have the reactor sitting there perfectly harmlessly until the fuel runs out. Safety sorted Waste sorted Cost - cheaper than coal.
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  2. Charles Okonkwo We absolutely do have a solution to high level nuke waste. Convert it to a salt and burn it in a molten salt reactor. The conversion is a simple chemical process. The reactors are intrinsically safe.
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  3. Corey Micallef You listed waste management solutions but the best of all is the Moltex SSR waste burner fast reactor.
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  4. marker902 Except the waste product is not weapons grade uranium. Waste burners are fast reactors that burn the waste produced by ordinary PWRs like Wd have all over the place. Thorium reactors breed U233 within the reactor then move it to the core to make more energy. The fuel is 99% used against just 3% for a PWR. U233 is radioactive and unstable. It would fry the bomb and anyone trying to build/operate it. Plutonium is produced when uranium is burnt but unlike solid fuel reactors where removal can be exactly timed, the Pu 239 in a molten salt is mixed up with all the other isotopes. Pu240 is a great bomb poison and it’s hugely costly to separate. Last of all countries that already have nuke bombs would not be using molten salts to make more. They are just rubbish for that job and they already have bomb making plants.
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  5. Claudio Ricardo Diaz Moltex has a fully engineered molten salt reactor for burning high level nuclear waste. It’s expected on line by 2028 in Canada. Progress is limited purely by the pace of regulatory processes. That’s slow to normal people but uber fast by nuclear standards.
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  6. Alain Duchesneau Ditto Moltex who will be burning nuclear waste in a fast spectrum molten salt reactor.
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  7. Dildo Shwagins PWRs use just 3% of the energy available in the fuel. That waste has a 1/2 life of 30,000 years. Molten salts including the Moltex waste burner will extract 99% of the available energy. That’s 30 times less waste for the same power output. Furthermore the waste has a 1/2 life of 30 years. That’s easily engineered.
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  8. marker902 Nothing is impossible but U233 is highly radioactive. It would fry the operators and the bomb’s own electronics. Not to mention it’s radiation signature visible from space. It’s also unstable and unlikely to fission correctly. In a thorium molten salt reactor the U233 is never removed from the reactor nuclear island. It’s just moved across from the blanket to the core.
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  9. Barefoot Moltex are doing that with a peaker nuke plant. The reactor heats molten salt thermal stores. 1000MW of reactor drives up to 3000MW of steam turbines making power when it’s needed and none when it’s not needed. There is no untested engineering.
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  10. We populations on earth who live with high background radiation. Ramsar Iran for example. How do they compare on the cancer heart disease lines compared to most of us.
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  11. JR Harryman biking with a passenger or droning along freeways sucks. Sorry but it just does. Changing direction mid bend, feeling the front wheel float on acceleration, getting air over a bumpy bridge are all things you can’t get from a car. Or you simply don’t notice.
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  12. EloquentTroll Singapore sounds a good bet. Until recently, Hong Kong would be the other bet. London could do it but not with the current mayor the lobby and narrow minded TfL who won’t think beyond busses and tubes.
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  13. Rene Dekker they are a big win at traffic lights and islands. Humans dither and faff and leave excessive space when waiting. The effect is only a fraction can get through. Many towns will do away with lights because cars can cooperate and allow joining streams to merge. .
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  14. Christopher Schroeder Inner city driving will be banned. Autocars wil use park and ride lots as buses do today. But it will be 24 hours. Then where does the city bus fit in? When Autocars are working efficiently the busses won’t offer any benefits.
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  15. MattOGormanSmith Arabian Princes won’t be a problem because nobody will be buying their oil. If the molten salt nukes are ever allowed to happen coal will collapse and oil will be a pure materials resource. Cheap bulk energy is needed for industry, recycling, water desalination, ammonia production, cement plants. All things were wind and solar power are not appropriate.
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  16. In five years time, SpaceX will have switched to ethanol thrusters. Their booster rockets are already re-usable. Their current trials and tribulations with Starship show just how hard it is to re-use the main rocket.
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  17. Don’t forget the weight of hydrogen fuel tanks. Containing all that pressure needs heavy tanks. There is also the refill time at the fuel station. You can fill the car fast but the pump needs 30 minutes to recover so don’t arrive just after another driver has filled up. The serious biggie is containment. Hydrogen leaks through plastics and makes metals brittle. Hydrogen embrittlement will happen to steel or aluminium and even exotics like titanium. Imagine this at your truck stop hydrogen store. https://www.twi-global.com/technical-knowledge/faqs/what-is-hydrogen-embrittlement
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  18. Higgs field destroys the universe. Is that what kicked off the Big Bang?
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