Comment Re:Wind always has significant maintenance costs (Score 1) 258
Nuclear does not displace renewables. Nuclear displaces fossil fuels. When we move away from nuclear we merely end up prolonging the use of fossil fuels.
Still not really the point. If by to "move away from nuclear" you mean closing existing plants early, you might have a point. However if you just mean not building new ones that it really seems like you do not. New renewables go up fast, and they are operational essentially immediately. A nuclear plant produces no power until after "first light" when it is 100% complete. A 10% complete wind or solar farm produces 10% of the power. If you only complete 70% of it then have to stop for a decade, the farm produces 70% for that decade.
Carbon neutral fuels are interesting, although I tend to think of aviation fuel first. Special cases.
Synthetic jet fuels would be a parallel goal of course. Ideally as much of aviation as possible would be swapped with electric. Using swappable metal-air primary batteries (for example aluminum-air) and and efficient flying V plane designs (which have the added advantage that they naturally have enough volume relative to weight capacity that the airlines simply can't stuff people in like sardines) has the potential to make 80% of plane routes all electric (and still just as fast as current commercial airliners). The remaining 20% would be routes that require higher altitude flights to avoid turbulence over certain mountain ranges or certain storm patterns.
The contrast between nuclear and coal is on point, because the US has an outstanding safety record. Coal has literally released more radiation in the USA. That's a point that most people are unaware of...
I am pretty sure pretty much everyone in this discussion is aware of it though. In any case, it is a serious indictment of fossil coal (not a problem for the synthetic stuff I mentioned though, since the only elements in it would be carbon and any radioactive carbon in it would have come from the atmosphere to start with anyway), but coal wasn't really a consideration in this discussion in the first place. I will certainly concede that "it's not as bad as coal" is actually a good argument when we already have coal under consideration. So, coal being a bad idea seems like something we can all agree on.
Regardless of Hollywood context though, it's pretty much undeniable that what the original poster said about the catastrophic nature of something going wrong is correct. There is, in fact 880 tons of what they are calling corium barely kept cool by constant pumping of water underground in Fukushima right now. The place needs something like 50 megaWatts to pump and filter the water, ventilate and maintain negative internal air pressures, oh and maintain a massive zone of frozen ground! They have only just now started removing the spent fuel rods that weren't even involved in the meltdown. They can't even realistically start on the actual cleanup until what they now say will be 2037 (that is likely to be pushed back) and that job is not expected to be completed for a century.
Given that sort of thing, I think it is reasonable for someone to point out that, when a wind turbine goes wrong, the consequences aren't quite so massive or require so much trouble to clean up.
Now, some of the new designs do indeed deal with some of those problems. Like the whole thing with needing constant power to avoid a catastrophic failure, or the pooling of spent fuel into a critical mass. That's definitely a good thing if any get built, but it doesn't remove the concerns for people who have been told repeatedly that this sort of thing literally can't happen again before it happens again.
Personally, at this point, any such concerns are on the back burner for me. I think the safety questions and the waste disposal problems that have lingered for nearly a century at this point are frustrating, but they are simply not showstoppers for me. My problems with nuclear power focus primarily on speed and agility and nuclear power is not fast or agile. Renewables quite simply seem to be faster and more versatile, not to mention, until someone proves otherwise, cheaper.
As for SMRs specifically, my concerns boil down to economies of scale and essentially the square cube law. Everything suggests that SMRs produce less power per unit of pretty much everything involved. The reactor cores don't produce as much thermal energy for their size relative to larger cores in the first place. Then, while some things in the rest of the plant may scale down linearly with the size of the core, many things do not, so there needs to be more overall plant for the actual rate of power produced. Plus refueling schedules, etc., etc. Ultimately, they seem to mostly exist at this point to draw in investment. Most nuclear scientists whose careers aren't riding on this will tell you that SMRs aren't really practical except for niche applications.
Greenpeace founders now admit their anti-nuclear stance was an error.
That is a pretty loaded statement.. Let's not forget that the anti-nuclear stance of Greenpeace was mostly about nuclear weapons and nuclear weapons testing. Even the single guy, who isn't generally considered a "founder" (let alone multiple founders) by anyone other than himself (or all the people who quote him as the founder or multiple founders to promote nuclear power). Basically, there are 7 founders from the original committee and then 2 more who were involved in the Green Peace name and in directing the committee. Patrick Moore, the "founder" you're talking about wasn't on the committee, wasn't originally a director, didn't name the organization, and, even if he counted as a founder, would only be 10% of the founders. He was an early member and was on the first boat trip, and was an early leader and was there as the organization grew and renamed to Greenpeace. There is another claimant to being a founder, Paul Watson who formed a breakaway organization who never went pro-nuclear power. Ultimately, there are dozens of early members with similar bona fides to Moore who could make a roughly equal claim to him to be a founder. ) Moore was a guy who left Greenpeace after a dispute over chlorine policy (as a tipping point anyway, he was apparently pretty autocratic and didn't get along with people), then failed in his business and realized he could make a career out of selling himself to lobbying firms as a "Greenpeace founder". He started with promoting the clear cutting of old growth forests for logging companies. He expanded from there, eventually to nuclear power. He also moved on to climate change denial, including claims that it's actually good for the planet.
Basically he's a sellout who went into PR and "crisis management" who helps companies green wash. This is the guy who had an interview where he said you could drink a whole quart of glyphosate and "it wouldn't hurt you." to which the interviewer replied "We have some here. Do you want to drink it?" to which he replied "I'm not an idiot!" and stormed out. So, in other words, someone who literally can't swallow his own story.
Basically at present, nuclear is pretty much doomed to be relegated mostly to niches for the foreseeable future because there seem to be better alternatives.