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Paul Carlisle's avatar

Great conversation and many great topics broached. Lex did a great job. The insights on what impact we are really having is sobering and weirdly encouraging given the damage a looming Republican Congress might seem like it could inflict. Probably less than we imagine. I think the big gap in the conversation and a gaping hole in the economic perspective Lomburg takes is the impact our actions have on the natural environment. While I think the point he made around time to improvement from fracking is fair, the fact that all of his cost benefit examples relate to the benefit to humans and ignores the billions of other living organisms on the planet that will also suffer consequences from global warming potentially including annihilation ignores value beyond calculation. If we just think about humans I think we will realise the doom he says is overstated . A planet without a flourishing natural environment will not be worth living on. We all need to bring that value to the fore and I know my children certainly feel that way . I don’t have confidence that the worlds technologists are going to be our saviours. After all, how much has been invested in cryptocurrencies and how positive is that. Personally I think we all need to question the ecological footprint we leave and we know some people have a far bigger footprint than others. Classic tragedy of the commons. And they mostly don't care. They are stealing our children’s future . Case in point : Elon Musk asking developers to fly to San Francisco for a code review for Christ's sake. Reducing consumption has to be a big part of the answer in a finite world.

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Tim Larson's avatar

Transatomic is no longer a going concern - since a few years ago. Your position on nuclear while not nearly the worst I've seen is pretty bad- there is no nuclear waste problem, there never has been... when you moved to your new place in Maine did you ask the real estate agent if the place had working waste management system, shower drain, garbage disposal? Probably not- you just assumed that. Now why don't you assume that the folks that designed nuclear power plants thought about waste management?

The nuclear fuel cycle is pretty simple: plants get fuel assemblies shipped in by truck on a regular basis (weekly), they inspect it very closely by hand, then every 18 months or so they put the fuel assemblies in the reactor, where they get hot for 3 years give or take- so here's where it gets slightly more complicated: that fuel is very radioactive now and mist be shielded - water is a perfect shield! So they take the top off the reactor and set that aside - at this point the fuel in the reactor is covered by what water is above it in the reactor vessel an you are looking at hot dangerous fuel - but perfectly safe with plenty of water between you and it. So how do they get the fuel up and out of the reactor? They flood the whole space 32 feet above the lip of the reactor- there is a channel or tube from the reactor containment to the long term cooling pool. The fuel assemblies are either carried upright through the deep channel, or laid down and rolled through a tube- to the cooling pool ( a deep water filled thick concrete holding tank- FOR 10 YEARS. Just sitting there under water- harmless (yes they circulate the water, no it's not a huge deal if those pumps go down) We've been dry cask storing spent fuel since the mid 80s- never been and incident of any kind. No one is interested in spent nuclear fuel. And globally we generate about 2500tons a year- care to guess how much coal ash we make? (hint we have over 1,500,000,000 tons of coal ash in North America alone. There is enough UF6 stacked up in Paducah KT to generate all of US electricity for 1000 years-- give or take. Carbon free. We can get uranium out of seawater. That stuff is everywhere. There are places in Canada where every other rock you trip over is mostly uranium...

After the fuel assemblies have cooled there for a decade - they go into dry casks outside where they take up valuable parking spaces until such time as someone wants to reprocess that fuel into new fuel of burn it in a fast reactor. At this point we don't reprocess fuel because it would be many times more expensive than just burning new fuel- nuclear fuel is cheap (about a 1/5 of what running a gas plant costs) (a gas plant might burn 20% of its capital cost per year... (a $2B plant- just estimating $500,000,000 in fuel costs alone- same in nuclear $75,000,000)

Your statement that wind and solar are growing was it explosively? is absurd- wind and solar don't keep up with increased demand, are grossly unreliable, expensive and hideously slow to deploy- oh I can hear it now "nuclear takes too long" - also just not true when compared to RE - sure gas is 1/4 the build time- and cheaper (money is such a poor metric when it comes to life on Earth though- but hey that's just me) Long term straight up accounting - 15 years down the road nukes are cash cows.

But we all know there is no straight up accounting when it come to nuclear (everything costs twice as much because of strangulating regulators that kill nuclear with fees (to wit a large portion of the $1.1B grant PG&E is getting to keep Diablo Canyon up and running will go straight back into the NRC- hundreds of millions of dollars in paper work which will amount to more than the cost of fueling that same plant. That is absurd.

No one ever mentions Price-Anderson. There's billions just sitting there.

Sorry to be so blunt Andrew but you need to, we need you to, up your game here and stand up for nuclear.

Emissions first, peace and justice will follow.

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