this post was submitted on 12 Nov 2023
224 points (96.3% liked)

science

14767 readers
35 users here now

A community to post scientific articles, news, and civil discussion.

rule #1: be kind

<--- rules currently under construction, see current pinned post.

2024-11-11

founded 1 year ago
MODERATORS
 

A massive nuclear fusion experiment just hit a major milestone, potentially putting us a little closer to a future of limitless clean energy.

you are viewing a single comment's thread
view the rest of the comments
[–] n3m37h@lemmy.dbzer0.com -2 points 1 year ago* (last edited 1 year ago) (3 children)

They still need to figure out how to harness that plasma, right now its creating plasma but sadly this is the easy part. Extracting energy from that contained plasma will be 100x harder than creating it in the first place. If only we had some other type of reactor that was far simpler and could be up in running and producing electricity for the masses in a relatively short time span...

Taken these smart people and have them work on MOLTEN SALT REACTORS FFS

[–] DarkThoughts@kbin.social 9 points 1 year ago (1 children)

Ah, I'm glad to see the thorium / MSR bros are still spewing their nonsense after all those years.

[–] n3m37h@lemmy.dbzer0.com 3 points 1 year ago (2 children)

And how long have fusion dipshits been spouting their crap? 1938 was the first attempt. Look how far we've got so far? There was a working MSR(E) that produced 10MW through out the 1960's but we are the crackpots. Gotcha...

[–] DarkThoughts@kbin.social -1 points 1 year ago (1 children)

Oh wow, 10MW, fantastic. Our energy issues are solved!

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago (1 children)

It was an experiment that was only a part reactor hence the (E) on MSR. They still had to build the "blanket" portion of the reactor.

Also the inventor of the light water reactor which is primarily used across the world and even influenced the CANDU reactors was designed by Alven Wineberg, the same person who designed the MSRE and was in favor or MSRs in general

[–] DarkThoughts@kbin.social -2 points 1 year ago (1 children)

So then there's clearly nothing stopping the world from a broad adoption!

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago (1 children)

Just the fact that the US govt couldn't make bombs with MSR's so they cut all funding and this causes people to think the technology doesn't work when in reality it would destroy current monopolies because it does work and is crazy cheap. Would also allow for these to be built almost anywhere because it doesn't need water to operate like Light water reactors

[–] DarkThoughts@kbin.social -1 points 1 year ago (1 children)

Ah, yes, the whole world of the United States of America! o7

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago (2 children)

What other country was working on MSR?

Yeah use your brain man

[–] AngryCommieKender@lemmy.world 2 points 1 year ago (1 children)

China is from the last I read.

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago* (last edited 1 year ago) (1 children)

In the 1950/60's which country was working on MSR? China is using the plans from Oakridge to build their current MSR.
America was the only country to do any work on one. The Atomic Energy Commission cut funding and this is why people think MSR are a failure

[–] AngryCommieKender@lemmy.world 3 points 1 year ago

Oh, yeah no one back then, as you said The US figured out they couldn't make weapons with it and shelves it

[–] DarkThoughts@kbin.social -1 points 1 year ago (1 children)

Right back to you my friend who still blindly takes the bait. You still don't even understand why there's no broad usage of MSR and spew your nonsense reasons for both pro and contra.

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago (1 children)

If MSR are not feseable then why did the creator of both want MSR to be built instead of light water?

It is entirely able to be built and one albeit not a full on breeder reactor was built and ran for 15000 hours.

Just saying it won't work doesn't make it so.

When the world starts buying these from China I'll make sure to say I fucking told ya so

[–] DarkThoughts@kbin.social 0 points 1 year ago (1 children)

If MSR are so feasible then why is not one building them left right and center?
Just saying it works doesn't make it so.
When the world doesn't start buying these from China I'll make sure to not say I fucking told ya so, because I quite frankly don't give a shit, and neither does the world.

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago (1 children)

China currently is off of what designs are left that were made at Oak Ridge in the 60's. They are doing the work that should have been completed in the 1970's at Oak Ridge.

Energy independence free from petroleum that could help desalinate water and capture CO2 from the atmosphere mean anything to you?

How about using nuclear waste from light / heavy water reactors to make more energy? Or making isotope that can better kill cancer without harming the rest of your body?

Yes it may be hard but it was proven to be feasible whether you like it or not by people much smart then you or I and is leaps and bounds easier than fusion hence the reason for them building one in the 1960's.

[–] DarkThoughts@kbin.social -1 points 1 year ago (1 children)

I have some news for you. If were feasible, then it would've been adapted already. The reason that it isn't should give you a hint.

[–] n3m37h@lemmy.dbzer0.com 0 points 1 year ago (1 children)

We will let China deal with that as they are working on it right now

[–] DarkThoughts@kbin.social 0 points 1 year ago (1 children)
[–] n3m37h@lemmy.dbzer0.com 1 points 1 year ago (1 children)
[–] flippidyFlop84@mstdn.ca 1 points 1 year ago (1 children)

@n3m37h @DarkThoughts Wow, I mean the writing has been on the walls for years that China has been way ahead on the making it go part. I'm hopeful that they will publish some publicly available science that the rest of us can learn from. Nothing quite like running it a while to gain insight.

[–] n3m37h@lemmy.dbzer0.com 1 points 1 year ago

I know, it's a shame that the US let this one slip. Regardless once this gets figured out it will do the entire world good... Maybe...

[–] RubberElectrons@lemmy.world -3 points 1 year ago* (last edited 1 year ago)

I'll still call you a crackpot, buddy 😊

[–] Salamendacious@lemmy.world 3 points 1 year ago (2 children)

So you'd argue that fission is a better way to go rather than fusion? I see China has built, but hasn't activated, a molten salt reactor. Why aren't they more popular?

[–] RizzRustbolt@lemmy.world 1 points 1 year ago

Basically, because of where all the thorium is. India would have a near stranglehold on the economy, and they're already heading into Saudi Arabia part 2 territory.

[–] n3m37h@lemmy.dbzer0.com -4 points 1 year ago* (last edited 1 year ago) (1 children)

Yes ignore the fact that fusion has been under development since early 2000's by how many countries? But point out 1 country working off of partial plans from the 1960's. Yep that means its a total failure....

If there was as much money put into MSR as fissiob the world would be using them as the defacto reactors seriously what a stupid argument

[–] Salamendacious@lemmy.world 1 points 1 year ago (1 children)

So I'm not saying one is better then the other because I don't think I'm informed enough to make that call. I'm just curious about what your opinion is. I honestly just want to see progress made in energy generally.

[–] RubberElectrons@lemmy.world 2 points 1 year ago* (last edited 1 year ago)

No, I'll step in here. MSRs are a boondoggle. I'll put in a more detailed comment above.

[–] RubberElectrons@lemmy.world 1 points 1 year ago* (last edited 1 year ago) (2 children)

MSRs are a boondoggle, a waste of effort.

What are the claimed benefits? Simplified piping, abundant fuel, self limiting power, etc.

Trivial engineering counterpoints:

  • Piping remains extremely complex, the activated thorium becomes U235 eventually, irradiating the hell out of the entire system. How do you change a valve when it gets damaged? You have other valves, and bypasses, and check valves, and... ~~Piping is simpler~~.
  • Abundant fuel.. we keep extracting from the Earth, and cutting huge ugly gashes in her. Let's not.
  • Self-limiting power... Some materials are very, very corrosive by themselves. Want to make them nastier? Add energy to them in the form of heat. MSRs use Sodium or Fluorine salts, both of which strongly react with water in the atmosphere, if not the air itself in an exothermic manner. And they do so with a bang, under the right conditions. So yeah, self limiting. But at a very risky cost.
  • materials: prior reason also effects material selection. Inconel is expensive, and very damn hard to machine, even with our modern carbide tooling. Materials keep coming along, and maybe that'll reduce cost. But just like fusion, it's a maybe.

MSRs: nah.

Extracting energy from fusion: some systems can be solid state. Depending on the process and the inputs, it's possible to directly extract electrical energy from neutrons crossing a charged grid, and dump that power (after some filtering and such) right into the national electrical grid, no steam needed.

Need to find a working fusion reactor? Look up.

[–] n3m37h@lemmy.dbzer0.com 1 points 1 year ago (1 children)

Need to find a working fusion reactor? Look up.

Oh me so smart. Did we creatbthe sun? Seriously bad argument. Best solar panels are only 30% efficient.

Also things that are worth it are hard, and expensive. Look at the average cost of a Light or heavy water reactor. Another moot argument

Yes salts are corrosive but that's what Hasteloy-N solves along with Inconel

And maintenance can be done by robots as they currently do in current reactors where the radation is so bad humans can't go there.

You are the worst at this

[–] RubberElectrons@lemmy.world -1 points 1 year ago* (last edited 1 year ago) (1 children)

🤭 Try making clear points instead of mucking several things together, you can do it!

Robots can do the maintenance! Who maintains the hopefully mildly activated bots? How do we ensure mission-critical systems can come back online in a timely manner without lots of expensive redundancy? Have you observed how long robots can survive exposure to intense radiation?

Sorry little guy. MSRs take all of LWR/BWR issues and adds extremely corrosive components into the highly radioactive mix. Try talking to the rest of us when you're more experienced actually building things that are economically/environmentally contributory.

[–] n3m37h@lemmy.dbzer0.com 1 points 1 year ago (1 children)

I'm no longer going to argue with an idiot

[–] RubberElectrons@lemmy.world -1 points 1 year ago (1 children)

Only one of us seems afraid of facts. Adios, gringo.

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago* (last edited 1 year ago) (1 children)
[–] RubberElectrons@lemmy.world -1 points 1 year ago (1 children)

Haha, nice sales brochure 🤡

What do you think is the important information within this?

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago

You're obviously inept at reading. Goodbye

[–] thedeadwalking4242@lemmy.world 0 points 1 year ago (1 children)

Fusion reactors will ALWAYS be 30 years away. Not only that they will concentrate energy resources with in the very wealthiest of nations because they are EXTREMELY hard to build and expensive. Molten salt reactors or even light water reactors are the solution too our energy needs. They are available now and the waste can be managed despite the endless fear mongering. Fusion is a waste of time for now. Even fission reactors are wildly expensive to build and you think we as a species can move on to fusion reactors in the near future? Changing mildly radioactive value or dealing with corrosive materials is 100000x less of an engineering feat than achieving cheap and reliable nuclear fusion. The reason it's not wide spread is because counties love their oil and have fear mongered fission so that little to no research goes that way. Fusion is a pipe dream

[–] RubberElectrons@lemmy.world 3 points 1 year ago* (last edited 1 year ago) (1 children)

Hmm. I see that you're passionate about resolving our dependencies on fossil fuels. I agree, but as an alternative, there's a growing consensus amongst us in the energy systems market showing that solar is on-track to becoming the most cost effective source of energy, short term.

Are there downsides to it? Yes. Materials science, the same field creating piping that can theoretically barely resist MSR's corrosiveness, is also making gains on more efficient solar arrays. Work is also in progress at one of our universities on recycling depleted silicon.

Perhaps fusion is unattainable on earth, for now. Spinoffs and developments out of its research are still quite valuable for us all.

There are many ways to solve this serious danger on the horizon for us all. Fastest, cheapest solution would be collectively reducing energy consumption. But that's unlikely. Making reactors at scale should be done carefully, as any mistakes will have ramifications for quite some time. MSRs are the least appealing solution as an engineer.

[–] thedeadwalking4242@lemmy.world 2 points 1 year ago (1 children)

Solar is limited per region and does not provide stable high capacity power. It cannot serve for a base load power source and can't even be used as a substitute for base power in some regions where it is needed most. Nuclear especially thorium based reactors are proven to work, and have been since the 60s. It is the future for our base line power needs. The only reason we are pulling away is propaganda and fear mongering. It can be dangerous but it is a local danger. CO2 emissions endanger the entire global population and will end modern civilization if we do not switch from fossil fuels.

[–] RubberElectrons@lemmy.world -2 points 1 year ago (2 children)

Imagine using HVDC to distribute energy farther at much lower loss. An upgrade to HVDC would net us about 40% more energy capacity without having to build a single new plant.

Grid-scale storage is being worked on in clever, interesting ways. For example, there are interesting mechanical storage ideas like ARES, using concrete laden train cars to electrically convert kinetic into potential energy, and vice versa.

A hillside, some rails, chains, a motor and some rail cars. All proven tech that we currently depend on for moving goods at low cost of ownership and high reliability.

There are many other clever options. Expand imagination and we can live without long-lived radioactivity.

[–] thedeadwalking4242@lemmy.world 2 points 1 year ago* (last edited 1 year ago) (1 children)

Again this works on small scale but does not fit power a large scale modern city and does not scale with our energy consumption needs over time. HVDC Is great when it's a state away or less but what happens when it's 2? 3? Four states away? There is still energy loss. Nuclear is long term, energy independence that scales with our energy needs. Nuclear does have long term radioactive but if processed correctly is not really a burden. Untimely it will be a combination of all these techniques that save us but what I'm saying is that for base load power. Nothing right now beat nuclear in terms of convenience, raw power output, energy independence, and reliability. Modern reactors are safe, advanced, and capable of generating more energy than we even consume.

[–] RubberElectrons@lemmy.world 0 points 1 year ago* (last edited 1 year ago)

Nuclear power as we know it might be ok but for that reprocessing issue. The Brits finally had enough of a need that they pushed legislation permitting movement of nuclear waste for the express purpose of reprocessing into useable fuel. They have quality trackage, thorough testing of storage cars, and most importantly a well-heeled rail management office, with a lot of power to ensure the rail operators follow the rules, and Dave real consequences when the rules are broken.

Meanwhile, we've had that recent large derailment of toxic chemicals in Ohio that I'm sure we'll be in people's memory for a while, particularly when we start discussing carting spent fuel around. Currently poor infrastructure in the US? ✔️ Low-value penalties sure to a corrupted political system? ✔️

Look, part of this is more than a technical problem, it's also a risk management and social contract problem. What do we do about a poorly regulated national rail system? How do we reassure people whose property may be seriously damaged by a potential spill that they'll be made fully whole again? This applies anywhere we're doing this, not solely the US.

Things are changing for HVDC, it can in fact be used for national-level distribution backbones with much lower cumulative loss vs an equivalent AC system.

Currently there's a $10 million grant to figure out how to make IGBT-based VSCs cost less, and based on that alone, it sounds like the US is looking at making that exact backbone, running east to west, with branches running north to south. Local distribution would take advantage of existing AC infrastructure, segmented into smaller subsystems.

[–] n3m37h@lemmy.dbzer0.com 2 points 1 year ago* (last edited 1 year ago) (1 children)

Sorry to tell you your fist point has been known for over 100 years and is how we have been electrifying the planet. Good thing you're catching up though!

Second point... Same thing countries have been doing this with water for decades, now were "discovering worse ways" to do the same thing

Ontario Canada has been making 80% of our electricity from our nuclear plants for the past 50 years with 0 deaths and less contamination from radiation and other particulate matter than burning shit to produce electricity. And on top of that we had nuclear plants for making medical isotopes used in all kinds of medical procedures which can not be made any other ways.

Thorium reactors only put out trans uranics that only last 300 years rather than 15,000 and can also desalinate water or capture CO2 from the atmosphere?

Oh and it can use the waste from other nuclear plants that last for 15,000 years to produce electricity and make them degrade in 300 years.

We can make all those type of transport better with clean electricity made in a Molten Salt Reactor

Sure I'll Open my mind to better ways to make electricty, this includes nuclear

Here learn something

[–] RubberElectrons@lemmy.world 1 points 1 year ago* (last edited 1 year ago) (1 children)

You know, tiny, it's funny how obvious it is that you've decided to actually look up the talking points to parrot now that I've actually challanged your low quality arguments. Would you like a cracker?

I don't generally learn what I need to know from sales brochures, as engineers are hired to find and resolve issues using the truth, dictated by physics and experience in machine shops. Additionally, there are a number of circumstantial issues that fog the translation between theory & reality. Keep up with me, tiny:

https://www.machiningdoctor.com/mds/?matId=5180 shows what we refer to as machinability, a reference number influenced by both crystal structure, and hardness. The low m/min value shows that it takes a lot of time (which is expensive) to machine a final product, be it a pipe, a valve, valve seat, or the particularly expensive heat exchangers.

Let's continue. What do people like drinking? Fresh water? Hey, you know where we ought to use the limited water supply? In a gigawatt energy storage system! Location needs to be right next to a river, which happens to be right next to a high mesa physically capable of withstanding several million gallons of weight (remember, 8.2lbs/gal of water, tiny). That tremendously limits location. How about problems related to flora and fauna, or the inability to scale the storage plants, or the issues of permeability of the ground, etc? Op-ex on gravity storage systems is almost as low as it gets, and a mechanical system further resolves most pain points, though admittedly adds a few small ones too. Still with me? Stop eating your crayons and pay attention!

Your medical isotopes only come from candu units, which are in limited supply for reasons which are fairly obvious to even tiny intelligences like yours. Very good, we've got Canucks doing a careful job with their reactors, though as with any plant, there have been mishaps and questions at other places. Indian point nuclear generating station, 20 miles north of NYC had a serious problem of unknown amounts of tritium leaking into the local water table, as well as the Hudson. The real problem was that after a decade of perimeter detectors going off constantly, nobody at entergy knew what the primary source was! I have direct experience dealing with this. As a single example,[ here's one of the times it happened.(https://www.nrc.gov/info-finder/reactors/ip/ip-groundwater-leakage.html). And this has kept happening over the years, to what in the industry was referred to as a model plant.

You need to understand that something can be high risk, low likelihood, and that's still enough of a deterrent to enactment. You're talking about a system which mixes extremely corrosive elements with high-gamma U~232~, making for a doubly-difficult to manage system. There are upsides vs b/pwr plants but both myself and professional industry agree that the upsides don't outweigh the very serious downsides.

I'll clarify that I am ok-nuclear, but only if nothing else works. Got it, tiny?

[–] n3m37h@lemmy.dbzer0.com 1 points 1 year ago* (last edited 1 year ago) (1 children)

And you think current reactor designs aren't hard? Seriously? Wow OK end if story for you.

Thankfully casting this stuff is fairly easy. Has this stuff been tested in a SLS printer which would make your machining is hard point absolutely moot?

Tell me you have 0 clue about MSR by telling me they use water. Hilarious man. Try a CO2 heat exchange for the 500c temps the reactor runs at. The only water needed for a MSR is the secondary heat exchange between CO2 and water using a closed loop system.

Find any information bad on the much safer CANDU reactors, MSR are magnitudes of order safer due to not having 900+ psi water acting as a coolant

The limited supply of CANDU is just due to stupid politics/bureaucracy, Ontario has been trying to build a new reactor for the past decade and was nearly canceled under our moronic Liberal leadership at one point

Once again the guy who literally invented both types of reactors favored the MSR design. I'll take his opinion over yours as he actually worked with the shit leadingntonthe creation of Hastaloy N. Not C233 or w/e you linked.

We have the technology to deal with every problem you have with the MSR.

If gamma ray make it so hard to do anything why did we created cobalt-60?

And to put a cherry on top

[–] RubberElectrons@lemmy.world 0 points 1 year ago (1 children)

I never, ever said MSRs use water. Like, ever. 🤷

Porosity, residual stresses, QA testing, all are significant factors with SLS forming. At no point in trying to discuss this with you in front of everyone has there been anything but an emotionally distressed, incoherent response to provided facts.

Everyone sees your hail Mary at play. Everyone. You are factually naked in front of everyone, trying your best to look competent.

Good luck, silly, I'm going to watch a movie with my kind-hearted girlfriend, and go to my nice well-paying job working on energy systems tomorrow to be a positive contributor instead of dead weight.

[–] n3m37h@lemmy.dbzer0.com 1 points 1 year ago* (last edited 1 year ago)

Then why did you mention fresh drinking water if MSR doesn't use it? Oh wait, it can desalinate water with MSR

Yeah Ii want good QA in a reactor, NASA / SpaceX use SLS to aide in manufacturing rockets, if it can handle those pressures I'm sure a 1 atmosphere of pressure in a MSR won't be much if a challenge for SLS printed parts.

Nothing I have stated is incoherent its just a shitty defense for you not being able to defend your position.

I'm sure you are a "productive member of society" enjoy your day