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Activists who embrace nuclear power

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351–360 of 598 posts

Re: Activists who embrace nuclear power

#351
post #282

Earlier quoted context omitted.

Afaik, nuclear energy is more expensive only because it is regulated far beyond what any other form of energy for the same level of risk. Disposal of nuclear waste is a huge expense, but the main waste product generated by natural gas (CO2) gets away scot free despite literally being the cause of what might be our generation's biggest problem. The end-of-life expenses of nuclear plants are included in the cost sheets…

That's simply not true. Nuclear has always and is still receiving significant indirect subsidies. A huge subsidy that nuclear power gets is that plants are not insured against incidents (because essentially nobody is willing to sell them insurance), so it's essentially the state that does it. Also many argue that the nuclear waste storage costs are significantly underestimated, I mean I understand estimating cost for…

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Re: Activists who embrace nuclear power

#352

The risks you end up taking on don't make sense for the amount of energy received. Solar, wind, geothermal, and hydro are more than enough to power the world. They're cheaper too. In terms of baseload requirements, batteries are the far safer alternative for transitioning away from fossil fuels. Nuclear power may have been tenable as a solution, even with the heightened risks, if improvements in battery technology we…

The risk people aren't considering is public opinion. It takes about 10 years to build a nuclear power-plant. Historically when have had one major accident every 30 years. Each time an accident have happened, projects have been canceled or put on ice. This mean that if you start planing a power-plant today there is ~33% chance, public opinion will stop it before its completed.

One good illustration id the documentary "Inside Bills head". Bill gates spent untold millions to develop safer, cleaner, less expensive nuclear power. One day he woke up to the news of the accident in japan, and all of a sudden all partners pulled out, permits where revoked and no one was interested anymore.

(The costs, risks and time lag are more important arguments against nuclear, but I think this one is worth considering too)

Re: Activists who embrace nuclear power

#353

Articles like this miss the main point and instead focus on culture war material. There are plenty of sites that would happily accept more nuclear being built, but all other forms of energy have undercut the cost of nuclear. It's no longer cost competitive, and places like China that adopt a "let's try everything and see what works best" approach have heavily pulled back on nuclear. The issues aren't safety, waste, a…

I've done a fair amount of research into molten salt reactors, and if we can solve the containment issue they should be very cost effective. The molten salts are extremely corrosive, which cuts their lifespan down to ~5 years. Newer designs should reach 10 years and there is extensive research into designing systems that will last 20+ years. They should be much cheaper to build and operate because they have several i…

It's interesting, the poster above was complaining that we have to put solar panels and windturbines into landfills and now you're proposing molten salt reactors with lifespans of 5-20 years (where the 20 years are still extensively researched)?

Re: Activists who embrace nuclear power

#354

Earlier quoted context omitted.

Fukushima happened after the biggest Earthquake in over 1000 years of recorded Japanese history hit at the right spot to produce an enormous flood wave at the reactor. I'd be careful to draw conclusion from such an outlier.

And radiations in Fukushima will last for the next 1000 years. Do we have the same understanding of "zero error tolerance" ?

> outside the geographical areas most affected by radiation, even in locations within Fukushima prefecture, the predicted risks remain low and no observable increases in cancer above natural variation in baseline rates are anticipated.[13] In comparison, after the Chernobyl accident, only 0.1% of the 110,000 cleanup workers surveyed have so far developed leukemia, although not all cases resulted from the accident.[14][15][16] However, 167 Fukushima plant workers received radiation doses that slightly elevate their risk of developing cancer.

The hysteria of your statement doesn’t appear to be substantiated by a dispassionate look at the facts.

Re: Activists who embrace nuclear power

#355

Earlier quoted context omitted.

I always took it as: As the nuclear plants from the 70s and 80s are getting decommissioned because of age, there is no plan to replace them with new nuclear. So they should be replace them with wind and solar, because wind and solar is a cheaper, quicker, and more reliable alternative then new nuclear (as this tread demonstrates). I don’t see the debate as existing nuclear vs. new wind and solar, but as new nuclear v…

Wind and solar need backup power plants and therefore *CANNOT* replace nuclear power plants.

Well, they can, but it’s a lot harder than people realize. To replace 1GW of nuclear completely in Virginia without a bunch of transmission, you may need about 14GW nameplate solar and about 50GWh of storage. It’s not cheap. Source: here, with 0 as exponent, 2011 as the year, 2020 cost scenario, and only solar and battery storage. https://model.energy

Re: Activists who embrace nuclear power

#356

Earlier quoted context omitted.

>You are vastly overstating the mineral requirements. No I didn't. A typical solar panel weighs around 40 pounds. All that material has to be mined from somewhere, then transported, then processed. Some of that material are rare earth minerals that have an outsized mining requirement (like for every 1 pound, you need to turn over 1000 pounds or 10000 pounds of earth). All of that material will need to be landfilled a…

> No I didn't. Yes. You did. Solar panels do not use rare earth minerals. Go google it. Rare earth magnets are used in some wind turbines, but alternatives exist there. That does change the cost calculations a touch, but not enough to invalidate the viability of a renewables + storage solution. > I'm saying that you will need vast new tracks of land regardless of that fact. People have done the math. Land availabilit…

>As of March 2019, China has 46 nuclear reactors in operation with a capacity of 42.8 GW and 11 under construction with a capacity of 10.8 GW.Additional reactors are planned for an additional 36 GW. [1]

China is planning to double their nuclear generation capacity. It is staggering to think they have 11 1000 MW plants under construction and plans to build another 36. The USA has lost the ability to build even 1 plant economically. I think China is “just doing it” when it comes to nuclear, as much as they can, which is a lot.

In comparison usa has 95 plants for 98,000 MW and has shut down 34 plants.

1: https://en.wikipedia.org/wiki/Nuclear_power_in_China

Re: Activists who embrace nuclear power

#357
post #323

Earlier quoted context omitted.

I read Pinker’s book — I’m familiar with the argument. I also think it looks at a data point (now) and compares it to the long tail of history, and says, “things are great!” I’m not sure if you look at the curve’s derivative since, say, 1995, it’s clear we’re heading in a good direction. And I’m an optimist. There have been warning signs flashing “systems failure” for a little while now, like a “check engine light” p…

>I'm not sure if you look at the curve’s derivative since, say, 1995, it’s clear we’re heading in a good direction. Crime was near all-time highs in the US, Europe's deadliest war since WWII was raging, numerous civil wars in Africa and elsewhere were claiming millions... It's clear it's way better, and definitely got better since your arbitrary timeline. >I don’t think there’s been a year in modern history like 2020…

And here I was thinking we were having an honest debate and not just hurling insults behind a throwaway account.

Re: Activists who embrace nuclear power

#358
post #357

Earlier quoted context omitted.

>I'm not sure if you look at the curve’s derivative since, say, 1995, it’s clear we’re heading in a good direction. Crime was near all-time highs in the US, Europe's deadliest war since WWII was raging, numerous civil wars in Africa and elsewhere were claiming millions... It's clear it's way better, and definitely got better since your arbitrary timeline. >I don’t think there’s been a year in modern history like 2020…

And here I was thinking we were having an honest debate and not just hurling insults behind a throwaway account.

It was an honest debate. Your naivete just got called out by a throwaway account, and you then proceeded to throw in the towel.

Re: Activists who embrace nuclear power

#359

Earlier quoted context omitted.

>There are plenty of sites that would happily accept more nuclear being built, but all other forms of energy have undercut the cost of nuclear. Honestly ... it isn't just about cost. Nuclear is expensive but it isn't prohibitively expensive. The big picture is we know that nuclear can power an economy, it does not emit global warming gasses, and also places a tiny footprint on the surrounding ecosystem. Solar and win…

It’s disingenuous to factor in mining requirement for solar panels but not uranium. Sure the supply chain to support the infrastructure required for 10 billion people is a lot on the environment, and we certainly could do a lot better. But these include better recycling of existing minerals (this includes solar panels), better forest management, better land use for food production, more careful road design that doesn…

It's disingenuous to pretend that the mining requirements for wind and solar (and the lithium required address the duck curve) are remotely comparable to nuclear power. Uranium's energy density is such that extremely little uranium is necessary to produce power.

Re: Activists who embrace nuclear power

#360
post #332

Earlier quoted context omitted.

Carbon dioxide emissions from consumption of energy Germany: 847.6 million Mt (2017 est.) France: 341.2 million Mt (2017 est.) Germany: 57% from non-co2 sources France: 69% (50% from nuclear, 19% wind/solar/hydro) https://www.indexmundi.com/factbook/compare/germany.france/e...

Note that the difference shrinks to a factor 2 if you consider per capita values. That's still bad, no argument: France splits atoms, while Germany burns lignite, and peat aside, that's as bad as it gets as far as CO2 goes. However, that's beside the point: The fact remains that Germany did move a significant amount of electricity generation from fossil fuels to renewables.

They could have moved even more power consumption off of fossil fuels had they not freaked out after fukashima and turned all their reactors off!
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