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Nuclear energy is clean

collectifission.nl

331–340 of 709 posts

Re: Nuclear energy is clean

#331
post #165

There is this idea that nuclear is not being deployed because people have a wrong perception of risks. However, the main reason is the economy. The costs of solar, wind and batteries are dropping exponentially but the costs of nuclear are not improving. We can blame regulation and the hypothetically wrong public perception about safety, but the reality is that costs cannot go down easily because of the innovation dyn…

And again, the article does the same mistake they always do: attack wind and solar more than fossil or hydro. Instead of selling nuclear as the ideal companion to solar, it's always a sad try to convince us that we are wrong investing in solar and eolic, and the money should be going to more nuclear. My guess is that utilities are not happy with the decentralization of PV. They like fossils, hydro and nuclear because…

The economics of nuclear power don't make it an ideal companion to wind and solar. You want to have backup power for days where it's neither windy nor sunny. So you need a lot of nuclear. But then you want to use renewables when they're available, so most of the time you run your reactors way below capacity. Unfortunately most of the cost of nuclear is capex, so every minute you don't run at 100% makes nuclear power much more expensive.

Re: Nuclear energy is clean

#333

Earlier quoted context omitted.

If one more reactor goes down nuclear isn’t either in your country. Germany has to run their load balancing gas plants right now to fix your nuclear fever dreams.

And what is the probability of a reactor going down unexpectedly versus a weather event that causes renewable sources to stop producing? I think we learned the answer to that question last winter down in Texas.

Texan politicians didn't miss a chance to blame wind power for the outages. Unfortunately, those initial lies are still circulating. The primary cause was that the pipes supplying natural gas froze. https://www.texastribune.org/2021/02/16/texas-wind-turbines-...

Re: Nuclear energy is clean

#334

Earlier quoted context omitted.

For someone like me, who believes the problem is not regulatory approval but the difficulty and cost of the build, I'm no more hopeful than pre-approval. But I have never questioned whether a good design could be conceived and approved. But if someone thinks that construction/manufacturing is easy and the difficult part is regulatory approval, then perhaps this is cause for hope! The renewable industry has been scali…

This is a design that is meant to be mass produced in an assembly line factory, then shipped to its destination and plugged into the grid. It definitely had the potential for economies of scale in manufacturing.

Maybe? It all depends on execution and costs. And that's where most nuclear firms and proponents have been wearing rose-colored glasses for decades.

The preliminary estimates of numbers for cost were not terribly impressive, so I hope that they became wise and are under-promising. But only time will tell.

Re: Nuclear energy is clean

#335
post #327

Earlier quoted context omitted.

I really can't understand how so many smart people fall for wind/solar promises. If you just think about it you have to realize it is not reliable solution for 21 century, it is not scalable for ever increasing (exponential) energy demand, population growth, land needed for expansion. It is simply stupid to rely on energy produced from sources that are by nature unpredictable (like wind, or sun). Solar/Wind can and s…

We have a long way to grow before solar energy is not enough for our energy needs.

It is not enough already. Its output is not reliable already. It takes huge space, land that could be used differently (like say expansion, so housing becomes cheaper, or farming, etc.), it has huge environmental impact (nothing lives anymore where solar farms are built). No thanks. I'll take nuclear any day.

Re: Nuclear energy is clean

#337
> Alpha radiation is completely harmless and doesn’t even get through a sheet of paper.

That is not correct. Yes, alpha radiation doesn’t penetrate skin, but is dangerous if you ingest it. That’s one of the reasons people have abandoned underground long-term storage sites: they all eventually have water break ins and the worry is that the waste will contaminate fresh water supplies.

Re: Nuclear energy is clean

#338

Earlier quoted context omitted.

All of those accidents combined killed less than 10% of the people that are killed by fossil fuel pollution every single year. Most nuclear accidents are entirely hypothetical.

If you have to resort to "it's better than fossil fuels" you have damned nuclear with faint praise. And you have also wasted our time, because nuclear is competing with renewables now, not with fossil fuels.

Okay, how about; it's safer than literally every other method of energy production? Less deaths per thousand terawatt-hours produced (90) than wind (150), solar (440), or hydroelectric (1400).

https://www.statista.com/statistics/494425/death-rate-worldw...

Re: Nuclear energy is clean

#339
post #47

The most interesting thing in the article for me was that the 250 reactors needed to power Europe would produce 1.3 cubic kilometers of nuclear waste per year. That’s actually way more waste volume than I assumed. I wonder what the figure is for the United States.

Your numbers are wrong. It is a known fact that France produces less than ~ 1 m^3 radioactive waste annually.

Re: Nuclear energy is clean

#340
post #335

Earlier quoted context omitted.

We have a long way to grow before solar energy is not enough for our energy needs.

It is not enough already. Its output is not reliable already. It takes huge space, land that could be used differently (like say expansion, so housing becomes cheaper, or farming, etc.), it has huge environmental impact (nothing lives anymore where solar farms are built). No thanks. I'll take nuclear any day.

We don't have enough solar power because we didn't build enough yet. It's not reliable because we haven't build enough yet. It doesn't use a lot of land (try doing the math), and a lot of the land it uses can be parking lots or roofs. It can also be used in the form of Agrophotovoltaics, so the assertion that nothing lives where solar farms are built is wrong too.
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