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Liquid Fluoride Thorium Reactors (LFTR): Energy for the Future?

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Hank addresses a highly requested topic - liquid fluoride thorium reactors - and tells us how LFTR might be the future of energy in ... China? Like SciShow on Facebook: http://www.facebook.com/scishow Follow SciShow on Twitter: http://www.twitter.com/scishow References: http://www.washingtonpost.com/national/health-science/nuclear-power-entrepreneurs-push-thorium-as-a-fuel/2011/12/15/gIQALTinPR_story.html http://theweek.com/article/index/213611/could-thorium-make-nuclear-power-safe
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Текстовые комментарии (3304)
Ben Smit (18 часов назад)
Chris Chapman (5 дней назад)
Dont' retrofit, build small modular units and stack them together
Mike Swed (16 дней назад)
Another science the USA is looking the leading edge on.
matteste (1 месяц назад)
1:38 Gamma is rays, not particles.
Earth Man (1 месяц назад)
The TMSR or just MAR being built in China is a joint venture with a business in Bellevue Washington, which is doing the design work. Bill Gates is the chairman of the board of directors. Google it. At least the technology, if not the reactor, will exist in the USA.
Earth Man (1 месяц назад)
There is no way to retrofit a uranium reactor to use thorium. They are totally different. Uranium reactors need huge amounts of water that they need cooling towers for. The huge advantage of Tears is that they don't. They can be built much smaller, and much nearer to where the power is needed thereby reducing the need for huge power lines. Search youtube for Molton Salt Reactors--same thing. Eliminate uranium as a power source.
x-illusion-x (1 месяц назад)
Yeah these reactors are so "Safe" the US Government has paid out over 120,000,000 in damages and counting https://www.youtube.com/watch?v=vVhtygifsuE
Madeleine deburgh01144 (1 месяц назад)
China taking the lead??? I am not surprised at bit
Henry Swan (1 месяц назад)
3 seconds in; see hank green: subscribed
badreality2 (1 месяц назад)
So, people don't want to retro-fit older nuclear reactors, for fear of about the same amount of nuclear waste? Coal-burning power plants warm the Earth; Wind-turbines kill bird populations; Hydro-electric plants flood environments; and solar panels are only good if their are tons of batteries, and 12hrs. of direct sunlight to supplement them. I hate to say it, but if a mountain per continent has to glow, to make sure the rest of the world survives, I'm O.K. with that.
Andreas Norlin (1 месяц назад)
New video with the latest from China's Thorium Program here https://youtu.be/aFMRQ_lmLV8
Ed Hughes (1 месяц назад)
There is no metal that will hold up to molten salt. Just ask any car owner salt belt states. Ceramic or Cermet will hold up to molten radioactive salts but are not structurally estimable to take and loads or psi trust me from a guy who knows (I am a BS ceramic engineer)
Darren Finnerty (2 месяца назад)
Global warming is a hoax .. The fires are set on purpose
P Cochran (2 месяца назад)
We’ve never used the waste of PWRs to make weapons. I wish people would stop using that as an explanation for why we are stuck with that technology today.
HyperVectra (2 месяца назад)
All I can focus on is the mole on his neck
Kobi Morton (3 месяца назад)
But how much waste do they produce? Just think about it. The International Energy Agency expects natural gas and coal to be about 40% (don't quote me) of world energy in 2050, so lets say that thorium instead takes that 40%. If we expect the global population to peak at 10 billion, how are you going to store the waste for 40% of the populations energy every year for 300 years? I doubt you could store more than a few years worth of waste on that scale within a zone like Chernobyl. It would probably be better to give it a minority role.
Will 1 (3 месяца назад)
Nuclear fusion is the future
Evan Bell (3 месяца назад)
To say that LFTRs can't produce weapon fuel is false. Thorium isn't fissile. In a throrium based fuel cycle, the thorium is bred into uranium 233, which is fissile, and its that that produces the energy. Its similar to the early dual purpose reactors that burned plutonium, as well as produced plutonium for weapons. Uranium 233 is a better weapons fuel than U235, its more similar to plutonium that u235 in most respect in terms of its nuclear properties. U233 was tested in several weapons in the 50s.
Kobi Morton (3 месяца назад)
Evan Bell (3 месяца назад)
"gamma particles" XD
Jeremiah Josey (3 месяца назад)
Nice video about a cool subject. We have a project on the topic: www.ThoriumNetwork.org and I'm inviting you to be involved. Reach out to me. Thanks.
REDandBLUEandORANGE (4 месяца назад)
Are these things real and if so where is one
your uncool niece (4 месяца назад)
Go thorium!!!
Stephen Christenbury (4 месяца назад)
Why is this guy so close to the camera
Etheoma (5 месяцев назад)
Actually no, the fuel is actually mixed in with the salt coolant, this so that the fuel can be drained away from the Neutron source in case of lose of power and can be cooled passively. In other words there is no chance of a meltdown either, you can even make the reactor have a drain plug that melts at a specific temperature automatically draining the reactor with no need for intervention. The only way for a metldown to occour would be to leave U233 to build up in the reactor a long ass time; probably months, and at the same time you would have to be removing the Actinide wastes, so litterally you could walk away from this reactor and be certain that a reactor breach would never happen unless someone purposefully did it.
M1CS (5 месяцев назад)
"Thorium, is the future and at the end of the day if things go bad, you can still kick it's ass" -Sam o'nella acadamey
jtech0 (5 месяцев назад)
I'd rather chance some radiation than have to breathe polluted air from something like a coal plant, etc. I think we need these for most of our power, solar/wind for some. New batteries, fuel cells, etc all electric cars, etc. No more fossil fuels, etc.
Peter (6 месяцев назад)
Lead innovation... dont follow
j mcmann (6 месяцев назад)
BS Alpha particles are far more dangerous than gamma..why ? they stick around when inhaled or ingested and keep tearing the hell out of your cells unlike gamma which juts pass through you
j mcmann (6 месяцев назад)
"fossil fuels" is a theory..we don't know how petroleum is formed..ask the Caspian mission when it discovered seas of "fossil fuel" methane on Titan
Riki Patel (6 месяцев назад)
We should put this in the UK but you know people always complain and the government are pussies so no... Won't happen
Benn Richardson (6 месяцев назад)
PS YAY CHINA , WAY TO GO, YES THORIUM!!! :):):)!!!...................It's a halfwit question. answer is OF COURSE, EINSTEIN!! , CHANGE TO THORIUM !!!! ten thousand years half life toxicity on uranium, and 300 years thorium? do we really need a calculator for this one ??????  AND DO WE NEED ICBM WEAPONS, AFTER AN EXCHANGE OF WHICH WE POLLUTE THE SKY, MAKE IT DARK FOR DECADES TO MAKE A NUCLEAR WINTER AND KILL GROWING OF CROPS BY 60% ???                         ........................... yeesh, please evolution, make us smarter, AND SOON !!!!!!!!!!!
Dragon Warhammer (7 месяцев назад)
What i dont get is why we dont store all of the nuclear waste in a reactor of its own which will constantly generate power for decades as the fuels slowly decay. It may not generate enormous amounts of power but it could sustainably power a small city for the forceeable future.
litltoosee (7 месяцев назад)
Interested? Follow Kirk Sorenson.
litltoosee (7 месяцев назад)
all those who find the prospects presented in this quick but informative video, please watch Kirk Sorenson @ Protospace on liquid floride thorium reactors. The video covers the subject from A to Z in laymen's language including the basics and history of nuclears energy. after watching it, you will come away with an accurate, sound understanding of the advantages, and challenges facing our future energy needs, and LFTR's potential to help humanity meet those needs. Please take the time to watch it. It's interesting, informative, fun and revolutionary. and the coolest part is that it's not theory. it's fact supported by successful operation of a molten salt reactor. We need your support. please watch!!!!
Joe Webb (7 месяцев назад)
I won't hold my breath on Thorium. I do think all new reactors built should use this, but the trouble is America's not building any right now. Fusion on the other hand...
Neil Fraser (7 месяцев назад)
Why do you talk with that funny cadence? It sounds like your running out of breath but you keep talking instead. I like the content, but please loose the funny voice. My $ 0.02
SurgeTheUrge (8 месяцев назад)
you kinda forgot to mention how it makes 200 times the amount of power with the same fuel, and how uranium leaves lots of unused fuel.
life is a fucking joke. (8 месяцев назад)
How many types of reactors are there. And what one is the most dangerous.
Robert Tanksley (8 месяцев назад)
Because if we wait for china to do it, it will be to late. China will control it. And he who controls the spice, controls the universe or something.
Prince Muhammad Iqbal (8 месяцев назад)
johannes thomsen (8 месяцев назад)
Thank you very much, you are a very good communicator, don't give up.
Delipse (8 месяцев назад)
haha he says that thorium cant be turned into a weapon but me and my friend blew up a couple of acres of land because we had an ounce of it
Matt James (9 месяцев назад)
Also, Update on China and it's reactor??? cheers.
Matt James (9 месяцев назад)
I was so energised by this video I had to read more, but I found conflicting information to what is stated above. Any thoughts on this link and it's reliability? https://whatisnuclear.com/articles/thorium_myths.html
\\ lizardluis // (9 месяцев назад)
3.14 :D
AwoudeX (9 месяцев назад)
well before the effects of climate change become THAT bad, we run out of enough fossil fuels to keep our bellies filled. I've seen estimates of around people being the maximum sustainable without those fuels. At the time fossil fuels run out, we're between 9b and 11b people, who gets to live? and yes this estimate accounted for increases in 'durable' energy sources.
Vincent CLAESSENS (9 месяцев назад)
For interested (and clever) people, pls go to www.jancovici.com This is a french site but it has and english translated part.
David Shafer (9 месяцев назад)
China shouldn't be allowed to out-pace U.S. in technological advances.
Richard Vanwinkle (10 месяцев назад)
I’m high, can’t stop watching.
Seph Angelo (10 месяцев назад)
I hope Mexico gets molten salt reactors too, we need cheap electricity. I heard LFTRs don't need water like old-school nuclear power plants.
booger king (10 месяцев назад)
Well if they made thorium reactors, people will ask governments to close these uranium plants and ban them. And when that happens, those who use it as weapon will suddenly lose their power. No more scaring other country with nukes.
booger king (10 месяцев назад)
"North Korea is a state, therefore they are not low funded stateless individuals. Additionally North Korea has absolutely nothing to do with the NRC" You're the only one here who assumes only stateless individuals are interested in making nukes. Also, you're the one who keep mentioning about NRC here. "It would also appear that you are most concerned about nations developing WMDs as opposed to single companies or individual stateless groups." Isn't it obvious? What made you think I'm only talking about individuals here? "any new country would have to recognize that any attempt to develop weapons would most likely result in a dramatic economic reaction from the USA, China or Russia, as well as the UN" You can't put sanctions to all countries once majority of them withdraw from NPT. "In the end a foreign nation isn’t going to stop another nation especially an enemy" And that's why you shouldn't stop others from protecting theirselves with nukes. Telling other countries to honor a treaty that says everyone should go nuke-less while you keep your nukes is stvpid. It's either everyone go nuke-less or you don't interfere with them arming theirselves with nukes. "There is not a single type of reactor design ever invented that could use weapons grade enriched uranium for power production." Fast neutron reactors use about 20%. Naval reactors use at least 50%. Theoretically for an implosion design, a minimum of 20% could be sufficient to make weapons. Even lower enrichment is hypothetically possible, but of course there are drawbacks
booger king (10 месяцев назад)
"This is not a simple process, nor is it a process that a stateless low funded group of people is going to have the capabilities of replicating." Tell that to north koreans. You make it sound too complex. In reality it's just a chemical gas spun in a zippe-type centrifuge rotating at 90k rpm, heat the bottom and wait til its done. "Considering the fact that the NRC makes inspections every year they would absolutely find out what you were doing. " Isn't it obvious? If you are a country that wants to make nukes, you're gonna end up withdrawing from the NPT thus no need to follow this regulations. "This is exactly why I wasnt' taking you seriously. This has nothing to do with regulation over current commercial light water reactors regarding enrichment regulation" You're the one who shouldn't be taken seriously. You know the reason why there are regulation in enrichment is because of nukes. If there were no regulations, people would start building reactors using highly enriched uranium. "I am against the production of nuclear weapons" Governments doesn't care about your opinion "A scenario that I quite frankly do not have an answer to is what happens if we disarm all nuclear weapons and Russia invades and takes over all the Baltic nations that used to be a part of the USSR? What happens if North Korea invades South Korea? What happens if China declares ownership over the South China Sea, and even areas in dispute with Japan?" What did US do when china invade tibet? Did they drop some nukes in china? I bet they won't. In the end, US only do things that benefit theirselves and these poor countries waits to be invaded by these nuke buddies
booger king (10 месяцев назад)
I don't see any physical reason why it cannot be further enriched. It's just a bunch of chemicals "That takes an extremely long time for centrifuges, " As far as I know, they achive higher enrichment through centrifuge. Unless they have developed the laser enrichment process. " it would be impossible to conceal such a move from federal regulatory agencies. That’s why I’m not taking you seriously." Not unless it is the terrorist that regulates the terrorist! I don't think I could give my trust to US when they themselves refuse to completely disarm their nukes while they fool other countries not to develop nukes. Seeing how these nuke buddies bully other countries, especially china against asian countries and US vs islam countries, I believe it's time to scrap NPT and let these countries defend theirselves. The reason why other countries does not develop nukes is because they honor the treaty. "so a ban on “uranium plants” to support Thorium really doesn’t make any sense." Just so you know, those nuclear power plants used today are what people call uranium plants. And I didn't say they should be banned just because they use "uranium"
booger king (10 месяцев назад)
Just because I mentioned terrorists doesn't mean I'm not serious. Lol! Ok, just replace "terrorists" with "Americans". Sounds better? Honestly, all these regulations is nothing but BS. These few countries who posses nuclear weapons pursuade other countries to sign the NPT and yet, they are the ones who refuse to disarm. That treaty's purpose is just to keep the power to these few countries. US even have this Nuclear Sharing sh!t with other countries. Non-proliferation my @ss. Lol! Everyone should scrap that sh!t and ask for india's assistance instead. If thorium was available when fukushima happened, I'm sure more countries would be pushing to ban uranium power plants. And this might even hit murrrica's nuclear subs and carriers.
booger king (10 месяцев назад)
Just because the maximum allowed enrichment is 5% doesn't mean it can't go further. And who regulates it? NRC? Lol! I'd definitely trust a commission of terrorists to regulate the terrorists.
Thomas Leach (10 месяцев назад)
it hurt when he said gamma particles
Egriff123 (10 месяцев назад)
the reason we haven’t done it yet is expense? pshhh... the US military budget is over $600,000,000,000. imagine what we could accomplish if that was spent on other things.
Sunday Olorunfunmi (10 месяцев назад)
How durable is the LFTR?
Noeleen Pisani (11 месяцев назад)
it's a no-brainer really. oh, wait, what, oh yeah our politicians don't have brains.We'll let the future work it out.Yippy
Shayz (11 месяцев назад)
Please make another version of this video!
rdormer (1 год назад)
"As a bonus, the waste from the process could be used to make bombs." NO. The LFTR crowd really needs to disabuse themselves of this notion. That is *not* why light water reactors prevailed, and to be perfectly clear, *any* reactor that runs on Uranium with an enrichment level of less than 100% will inevitably produce Plutonium as a byproduct. Yes, this includes everyone's precious LFTRs. "But I read on reddit that it's proliferation proof because the Plutonium is contaminated with blah blah blah..." No. If you want to get around this "obstactle," you just need to make sure the produced Plutonium is subject to less irradiation, which you can do by increasing the turnover of fuel through the core. LFTRs, by the way, inherently make this process *easier* because they are *designed* to make it easy to turn the fuel inventory over quickly to avoid reaction poisoning. Bottom line - if someone wants bombs, they're going to get them. There is no such thing as a "proliferation proof" nuclear reactor, just some that make it easier (and yes, LFTR is one), and some that make it harder (but hardly impossible). Ask India if you don't believe me. We had bombs before we had reactors. Get it?
Isaac Bukata (1 год назад)
why did nuclear submarines mater? seriously, like electrocat1 said the government is so childish.
Andreas (1 год назад)
Your first premise was false. Ouch!
Chuck Milliken (1 год назад)
Major oversimplification. Thorium itself cannot produce power. It must be converted to uranium first by bombarding it with neutrons. Once the reactor is going, you can use the free neutrons from the uranium fission reaction to generate more uranium from thorium, then chemically separate the new uranium from the rest of the thorium. The best way to do this is as a molten fluoride salt.
Rob Pre (1 год назад)
another incorrect point. Thorium gives off alpha particles this is true. But this is in its conversion to U-233 which is the fuel that keeps the reactor going. When U-233 under go's fission it gives off the same radiation as U-235 fueled reactors. Multiple nations are using thorium for fuel. India is perhaps the largest, China's use is quite small compared to India. China builds a test reactor. India had 8 currently built being built or planned. They also have one the worlds largest thorium reserves. Many Many technically inaccurate points.
Rob Pre (1 год назад)
Incorrect information. Thorium is a breeder reaction. Almost all the thorium gets converted to U-233 over 99% making it very efficient. But U-233 is pure weapons grade. You can directly build a bomb like the Davey Crocket with this material. That is why the US government does not go that direction. The light water and Pressure water reactors that use enriched U-235 and U-238 fuel where the U-238 is considered "depleted" an incorrect term. The U-235 is burnt as fuel but at less that 2% enrichment or so it can no longer sustain the reaction in the reactor and in the US these fuels are pulled out and considered waste. In other countries like france the reprocess the fuel and enrich it again and put it right back into the reactor. The spent fuel rods contain a mixture of U-235, Pu-240, Pu-238 and U-238. Weapons grade plutonium requires 90% purity, same for U-235 and U-233, and Pu-238. This mixture makes it extremely hard to make nuke weapons and that is why the US went that way. The LFTR reactor is a Nuke bomb creator and that is why they hide this info. It is also why they don't speak of the German reactor that was Thorium fueled. Russia mixes thorium with their Uranium fuel rods to double their life. The Us considers this because the end result is a mixture of nuclear elements that are hard to weaponize.
Joshua Tobler (1 год назад)
"Crap Circus" is hardly a scientific conclusion. While carbon emissions are almost certainly contributing to the gradual temperature increase at the center of climate change, there is no scientific consensus as to what percentage that effect is contributing, or how negative the effects will ever get. Reading the literature, it seems like at worst, a few millionaires will need to move inland a mile or two in a hundred years, and at best we delay an apocalyptic ice age. Your climate alarmism is bad politics masquerading as bad science.
The Valsoray (1 год назад)
America: What it is going to cost as MONEY and NOT HARM the environment (as much), BLASPHEMY China: Hmmm seems to only have pluses (environment already messed up due to rare earth metal extraction), why hasn't America built one yet..?
jason Brittain (1 год назад)
The US should go to thorium reactors,the reason is that the country that enriches 90% of the worlds uranium with not be enriching any for the US in the near future !! The Russian federation enriches 90% of the worlds uranium !! if you were Russia would you enrich uranium for a country that has put sanctions on you !!!!!!
Stravo Lukos (1 год назад)
HANK, where'd you get the 300 year half-life for LFTR "waste"? Also, how much waste is there from a process that is 99+% efficient? Finally, have you ever listened to Kirk Sorenson?
Yuarian Smith (1 год назад)
I hope India makes thorium reactors, it has the largest reserves of thorium in the world
Ronnie (1 год назад)
Nah too liberal. Not worth a sub :)
qwertyFUBAR (1 год назад)
Brentis Coleman (1 год назад)
Dislikes are surely the military industrial complex and oil companies
SD Photography (1 год назад)
Josh MacDonald (1 год назад)
love LFTR. but just to be clear, they are not really thorium reactors. They are uranium reactors. Uranium is bred from the thorium and that's the fissile material that does the work.
Bob Lamb (1 год назад)
So how safe is thorium? Can I build one in my backyard instead of putting solar panels on my roof?
Frank Blackcrow (1 год назад)
Oddly enough is that uranium only gets to create 1 tenth of power to how much it should via it's mass as that the main proportion of creation of power from it is mainly a waste proponent as of the isotope itself and of the means as to get a reaction and to actually cool down the whole process to get the energy out as a product, as the case for uranium as to thorium as of the need to keep using it is that it keeps people that have been practising the science and of those in trade of it in jobs and teaching position's from keeping uranium,, that the science can be changed to show thorium as the right way to use nuclear energy but that the basis of the whole use of it is geared towards waste creation in that it get's people to keep paying for it to be used rather than another element that have better potential as a power source.
Oi Vey (1 год назад)
This mis leading it requires plutonium to make energy
Daniel Cooper (1 год назад)
I think you will find that alpha radiation is quite dangerous. It is easily shielded but deadly when in the environment. Very few people die of gamma exposure, but getting an alpha emitter in you is a death sentence.
Nathan Thompson (1 год назад)
we can do without most of our electricity use
Gustav Kriek (1 год назад)
Thank you for talking about LFTR. Looking at the real world energy needs, existing infrastructure like power grids and cars, and the per unit cost of fuel and reactors (after R&D), LFTR is by far the best option. When energy is really cheap and abundant, we can recycle more and produce more, which in turn gives us more jobs, cleaner environment, and less expensive products. We all win. Yes, it does produce waste, but same goes for making solar panels, petrol, coal, wind turbines and every other power source in existence. We NEED stable and constant electricity supply. So lets choose the one thats the best all rounder
yeah right (1 год назад)
Fossil fuel was put on this planet for our benefit lasting for about a century. Our makers never anticipted us to use nuclear energy to produce bombs but instead made sure we have enough thorium to sustain through the next hundred years in order to find and refine a true renewable source source of energy.
Jed Miller (1 год назад)
*"Alpha particles, which are less biologically harmful than gamma particles."* Meh, depends. Alpha particles are massive, and they ionize really well. So, your dead skin on your epidermis essentially saves you. But, if you inhale it, like a smoker does from Po-210, it's awful.
TheHadesShade (1 год назад)
How much less radioactive is Thorium waste compared to uranium waste?
Stravo Lukos (1 год назад)
days vs. millennia.
Craig Schiro (1 год назад)
I believe in the American exceptionalism when most Americans loved our country and pulled together not dividing our great country. We should advance on LIFTR TECHNOLOGY NOW! Government regulations preventing innovation must be removed and let commercial startups develop power plants. Clear all regulation roadblocks!
Confident Introvert (1 год назад)
1:37 gamma rays*
SD Photography (1 год назад)
This should be built in the U.S. under a program similar to the 'manhattan project'. Unlimited funding, so to speak. Global warming is no joke. The east siberian arctic shelf being one example of how serious it is. Should the east siberian arctic shelf 'defrost' it has the potential to release 500+ gigatons of methane into the air.
Rachel Delattre (1 год назад)
"since fossil fuels are turning our environment into a crap circus" I love you
Saran S (1 год назад)
hey you're wrong China no way near developing​ one they plan to buy reactors from Canada but India has an operational one it's the world's first commercial nuclear reactor runs on thorium
Snuffy Smif (1 год назад)
Of course we sided with the bomb stuff, because sadly, as a collective man tends to allow fear of other fellow man, and/or a deviant need to subjugate that fellow man, lead them to implement the worst of all evils.
John Smith (1 год назад)
One thing leads to another. Religious persecution made Jewish scientists flee Europe while war broke out. The war pitted leaders who just thought they were better against leaders who wanted to run their system exactly their one way and leaders who wanted the system to run its self. When the ones who thought they were better than everyone lost it left a leader who was numerically even worse to his people and a group who had dreams of individual initiative and nightmares of war with the numerically bad guy. This led to massive manipulation by both sides which fed paranoia by third parties who felt used and their leaders inspired them with teachings of a man they believed transcribed God and led successful military campaigns at thousand years ago. In the mean time a manageable concentrated power source was ignored. Go LFTR go!
Erick Velasco (1 год назад)
so.... Hank.. are we closer to see a LFTR reactor yet??
Paul Swanee (1 год назад)
Not so much in the USA. Theres a lot of politics that goes into nuclear power with the NRC, who has to make new regulations and changes, and currently they are much more interested in small modular LWRs, and VHTRs.
Patrick Boucher (1 год назад)
I think I have a liberal ideology but am and have been pronuclear as, history will back me up on this, when we (meaning civilization, not a country) start something problems are solved in research BEFORE we start. And 300 years is easier than 24000 years for storage. Research wont stop.
The India News (1 год назад)
china is taking lead on thorium ?? lol!! India already built thorium based reactor ..
Paul Swanee (1 год назад)
No specifically a LFTR (liquid fluoride thorium reactor). India has a Advanced Heavy Water Thorium reactor. Its not molten salt like the SINAP project in Shanghai.
Kevin Moore (1 год назад)
Great host, on crash course, and this show. Thumbs up.
Kevin Moore (1 год назад)
Also is exactly what people need to sustain our lifestyle now.
John Wang (1 год назад)
They're a little bit more to that. First LFTR is an Uranium 233 reactor, it's a breeder reactor where Thorium exposed to neutron in the reactor will run into Uranium 233. Second, the reason why current nuclear wastes need to be stored for over 30,000 years is because only 0.5% to 0.7% of the uranium can be used before the fuel rods become structurally unsound due to Xenon gas being produced within it. In a LFTR, the fuel is the molten salt so Xenon just bubbles out. Third whether or not nuclear weapons can be made from LFTR is debatable, the general premise is that some uranium 232 are produced with the uranium 233 and uranium 232 gives off dangerous gamma rays in it's decay path which not only makes working with the uranium dangerous but would interfere with any electronics controlling the weapon and would make the weapon easily detectable even from space. Now, advocates for Thorium claim that this means the uranium produced couldn't be used for nuclear weapons without the high tech separation of uranium 232 from the uranium 233 just as it's difficult to isolate natural uranium 235 from uranium 238 but this isn't entirely true. With uranium 235, it is the desired uranium 235 that is the minority product but with uranium 232, it is the undesired uranium 232 that is the minority product hence uranium 233 which is usable in building weapons could be isolated by dividing a sample of uranium produced from Thorium into smaller samples and then rejecting the samples showing gamma radiation. The government's desire to have weapons grade Plutonium might have been a factor in choosing solid fuel rod, light water reactors over LFTR but I think it has more to do with the solid fuel rods being proprietary and only available from the manufacturer of the reactor thereby allowing the reactor manufacturer such as GE to direct as much of the economic benefits to them just as inkjet printer manufacturers can direct the profit to themselves via proprietary inkjet cartridges. With a LFTR, you could just toss a high Thorium rock into the reactor whenever you needed more fuel and such rocks are everywhere. Note Nixon is on tape choosing to invest in a fast breeder reactor over LFTR's slow thermal breeder design because the fast breeder design takes hundreds of operators to operate safely hence produces a lot of high paying jobs while LFTR is passively safe by the laws of physics and doesn't need any operators to operate it safely.
John Wang (1 год назад)
+Paul Swanee Yes, I find that the safety benefits of the non-pressurized nature of molten salt reactors to be the primary benefit. I don't think Uranium 233 has a greater cross section than Uranium 235 however Thorium is far more plentiful than either Uranium 235 or Uranium 238. Indeed the test reactor often quoted by LFTR supporters used uranium 235 in it's molten salt core. Where the neutron cross section is often mentioned is in comparison with Plutonium 239 which the fast breeder advocates use as a fissile material transmuted from Uranium 238 which is far more plentiful than Uranium 235. I see the proliferation problem as the proverbial genie in the bottle and our attempts to stymie proliferation are doomed to fail eventually. I don't see LFTR as a solution to proliferation issues but it would change the situation slightly though perhaps not for the better as one might hope. I see the claim to lower costs by LFTR advocates is a realistic one as the reactors are not pressurized and the reactor designs can be much smaller and hence mass produced. Yes, materials tolerant of the molten salt both in temperature and in terms of chemical reactions require more research but these are not issues that we have not already dealt with before. As to temperatures, we already deal with molten salt in solar themal storage facilities. I suspect that LFTR could be done at a much lower cost than current nuclear technology but the long term life cycle of the reactors are simply unknown. Can LFTR be competivtive with natural gas? Well, the costs of natural gas is artificially low simply because it has historically been an unwanted byproduct of oil extraction. Indeed, a lot of natural gas has and currently is simply being flared at the wells instead of build the extra pipelines, compressors and liquefaction plants needed to bring it to market. Basically, supply of natural gas has historically outpaced demand but if demand increases as it has been doing so, this could change. At the very least there would be a need for some capital investment to bring stranded natural gas to market, then there would be low cost till growth of demand outpaces the inadvertent production growth due to oil production and then we might see what natural gas costs might actually be. Generally, compared to current natural gas rates and usage, natural gas is about five times the price per energy as coal and LFTR has been proposed but not proven to potentially be less costly than coal. Yes, I find the video misleading but really that's not surprising.
Paul Swanee (1 год назад)
Yeah I thought parts of this video were misleading or confusing as well. I thought that the primary reason for LFTR (today)over LWR was safety due to the fluoride coolant decreasing risk of potential meltdown from causes of pressure. The reason for using thorium to transmute into uranium 233, was because uranium 233 had a greater neutron cross section in a thermal reactor than non-enriched uranium 235. This greater size in area would allow for a greater probability of fission production leading to more generation or less fuel being required per cycle to produce equivalent amounts of generation as uranium 235. Do you know if this is true? In my opinion the whole debate over nuclear proliferation and nuclear terrorism is well overplayed. If the problem is we cant have certain kinds of fissile material, because the military might use, why not just ban the military from using it? The argument that other countries may use it also doesn't make any sense, because we can make nuclear proliferation manufacturing treaties under the IAEA to prohibit nations from doing so. Also it seems to be way more work than making bombs how we used to do it. In the USA we banned nuclear reprocessing in 1977 due to nuclear proliferation, but today Russia, Japan, India, China, France, and the UK all use reprocessing equipment. Clearly the US banning ourselves had no effect on forcing other nations, including our enemies to ban the process as well. Instead we just shot ourselves in the foot as this machinery could be used to recycle and separate nuclear waste for continued use. The whole terrorism debate is even more nonsense, when you explain the technical and advanced scientific understanding required for the production of bombs from nuclear waste at a reactor. Its just insane, and would cost any terrorist group millions of dollars to do so, when they could just buy the bomb on the black market for significantly cheaper. Its absolute nonsense. Lastly this video is very misleading by suggesting that an LFTR is easier or even cheaper to construct. As a high temperature thermal reactor much more expensive materials are going to be required like Hastelloy- B Carbide Silicon. Besides just the temperature, the molen salt is highly corrosive so even with better materials, these reactors will most likely need a regulation in place to "check the pipes" so to speak for any damage and flush the material so as to not damage the reactor. Now in my opinion the savings on liability and fuel more than make up the difference in costs, but the most important comparison will be if these plants can be economic compared to natural gas.
Marie Goot (1 год назад)
im so glad i put the playback speed to 125%, now i allmost can't make out the intro and outro songs :)
Edgewalker001 (1 год назад)
Not to mention that alpha particles are stopped by pretty much anything. You don't need a radiation suit that's made of lead, in fact they have extreme difficulty with normal cloth... Which means that if you're gonna store radioactive waste from one of these, you can do it in plastic barrels, which doesn't rust.
fitofight (1 год назад)
Why not end the use of electricity?
Thomas Dobyns (1 год назад)
LFTR is much cheaper per KWh , can't melt down or run away, runs on depleted uranium instead of enriched uranium, can't make plutonium, can be started and stopped as needed to work with "green" alternatives, can be made small enough to fit on an 18 wheeler and supply a town or city, all but stops C02 production by not burning fossil fuels, is cheap enough to be used to make synthetic fuels and fresh water from salt water. It will reduce your light bill, and make electricity intensive goods much cheaper. Do some looking around. This is a biggie. Call your senator. Tell him China is starting it, and we invented it.
Paul Swanee (1 год назад)
" runs on depleted uranium instead of enriched uranium" This is not true for most designs. While you can reuse uranium fuel after reprocessing the only company that is specifically designing a reactor to run on depleted uranium is TerraPower with their Traveling Wave Reactor. The bred uranium 233 from thorium 232 is still enriched.
Felixkeeg (1 год назад)
Meanwhile 5 years later China is up and running with the final tweaks lol.
tong shen (1 год назад)
Some MIT Phd are also working on it. They have already finished the theory proof part and are now working on blueprint for a commercial product. Excited XD
tong shen (1 год назад)
Władca Wymiaru (1 год назад)
If we do it, humanity got really safe, cheap and good power-source but...that fucking uranium competition! We need to ride them, that same as banksters&islam !
Tim Lindley (1 год назад)
Hehe. Crap circus.

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