Your billion year figure is way off, but yes, there appears to be enough nuclear material to last the lifetime of everybody living today.
Not so! A breeder reactor gets 60 to 90 times the energy out of each kg of uranium. 1 kg of uranium is enough to supply 1 person's LIFETIME of energy, including all the energy required to manufacture synthetic fuels for diesel, flight, and even recharge electric cars. 1 kg in a BREEDER reactor = 60 to 90 human lifetimes supplied with abundant, reliable energy. The ocean already has vast quantities of uranium, but not only this, erosion tops it up faster than we could use it. Uranium is 'renewable' in this sense, but we have about 50,000 years of uranium and thorium to burn on land, so we might have fusion or space-based solar power by then anyway.
Traditional reactors produce toxic radioactive waste that we don't know what to do with.
Not true! Waste = fuel! The final waste called 'fission products' (after 60 to 90 times the energy is extracted) is simply vitrified into waterrpoof ceramic bricks or plates, and buried for 300 years. Then they're safe. DONE! No risk whatsoever!
Combine that with safety concerns, and the result is that there have been almost no reactors built in the last 40 years.
Not true! Coal kills 3 million people a year, or 2 Chernobyl's a day! Sorry, but nuclear power is VASTLY safer than coal, and only public perception of risk is in the way. They're already moving people back to within 4km of the Fukushima reactor!
If we get desperate we can do this, but the risk is high.
Dr James Hansen calculates that nuclear power in America has already saved 1.8 million lives by displacing coal. Sorry, the risk is too high NOT to adopt nuclear power.
And how do we use nuclear to replace gasoline? You can't put a nuclear reactor in your car.
Great question, and one I used to panic about! Indeed, ALL your questions have been great, and you sound like me 7 years ago!
Dr James Hansen says believing in intermittent, unreliable renewable energy like wind and solar is like believing in the Easter Bunny or Tooth Fairy.
Hansen warns not to drink sustainable energy Kool-Aid
He also says the world should build 115 reactors a year.
Nuclear power paves the only viable path forward on climate change
Now, 115 reactors a year sounds like a lot, but if you break it down to a fraction of reactors to GDP, the French already beat this in the 1970's under the Messmer plan, so we know it's doable. It's not too fast. The other good news? This clean electricity grid could replace about half our oil use! Oil breaks down into 2 main categories, light vehicles and heavy vehicles. Light vehicles burn gasoline (aka petroleum) in family cars, garbage trucks, city buses, and light delivery trucks. The *great* news is that America's NREL have concluded that today’s grid and power plants could *already* charge 84% of all light vehicles (if those power plants were all run at maximum).
https://goo.gl/gt21CX City designs in European countries use far less oil, and so it would probably be about 100% of all light vehicles. That means Dr James Hansen's 115 reactors a year would *directly replace* gasoline.
But what about diesel? Diesel powers heavier vehicles like long-haul semi-trailers, harvesters, and mining trucks. Also, what about jet fuel for airlines? This is where "Blue Crude" comes to the rescue. This is fuel from seawater. American nuclear-powered aircraft carriers wanted to be able to generate jet-fuel while at sea so they could eliminate logistical concerns about fuel supply while on missions. They've cracked it! With enough electricity, they can now suck CO2 and hydrogen out of seawater and mix them to make diesel. Not only that, it's economical. Yes, we will need more nuclear power plants to run this process. The electricity to split water and CO2 out of seawater is *not* included in Dr Hansen's 115 reactors per year. But that's not a problem! The cost of the *extra* nuclear power plants required to power "Blue Crude" is included in the end price of the diesel. It’s affordable.
Synthetic diesel As "Blue Crude" ramps up, so will the nukes that run it. That means both halves of the oil world, gasoline and diesel, can be replaced economically with *existing* technology for tens of thousands of years on known land-reserves of uranium and thorium. Indeed, there might even be cheaper and more efficient ways of having hot thermal nuclear reactors crack the water directly in thermochemical reactions rather than generating electricity to do it. As nuclear power and electric cars scale up while fossil fuels scale down, we will save millions of lives from fossil fuel pollution let alone the horrors of rampant global warming. We will finally have a sustainable grid and transport system that will not suddenly run out of resources. Job done!
Ok, but breeder reactors have a whole new set of problems. The sodium used to cool them is an immense fire hazard, and the reactors frequently find themselves shut down for repairs.
EBR2 ran well for decades without incident, and easily passed far worse power outages than Fukushima!
Please watch this 7 minute video of the test.
Further the reactors are not intrinsically safe. If they lose coolant, the reaction can go critical and cause a nuclear explosion.
I'm going to assume you meant a nuclear 'meltdown', because no nuclear reactor ANYWHERE can EVER cause a nuclear explosion! A reactor is not a bomb! It CANNOT cause a nuclear explosion! No reactor ever has, or ever will, cause a nuclear explosion. Chernobyl and Fukushima were not nuclear explosions! Fukushima was a giant 'squeaky pop' test! (Remember those in High School? A test tube of hydrogen?) The water coolant split in the high temperatures of their reactor melting down. Hydrogen then built up OUTSIDE the reactor, and a spark went BOOM! And they're becoming intrinsically safe. EBR2 was intrinsically safe because the liquid metal coolant was NOT water, and did NOT split, and eventually dissipated the heat. It survived WORSE conditions than Fukushima's power outages. GE have a reactor called the S-PRISM ready to deploy in the first country that will let them.
And the plutonium they breed is easily used in weapons. Although this has been tried many times over decades, none has been a commercial success. See
http://fissilematerials.org/library/rr08.pdf .
"The so-called pyroprocessing that occurs at an IFR site is quite unlike the PUREX (Plutonium and Uranium Recovery by EXtraction) reprocessing, which isolates weapons-purity plutonium from a thermal reactor’s spent fuel. During the entire relatively simple pyroprocess within the confines of the IFR, the plutonium is always in combination with elements that make it impossible to use for weapons without further, PUREX-type processing, and is so radioactive that the entire operation is done remotely behind heavy shielding. Once the new material that we want to dispose of is added from outside, it too is removed from possible weapons use once and for all. Thus all the actinides in spent fuel from thermal reactors, as well as weapons-grade material we wish to get rid of, can be sent to IFRs. Instead of being a plague on future generations, the energy potential of the actinides is fully utilised in the production of electricity. Consider, if you will, what this means in terms of energy availability. Nuclear “waste”—which in today’s terms can now be seen to be a gross misnomer—from LWRs128 still contains about 95% of the fuel’s original energy. IFR plants can burn, in time, all of the actinides that have been mined, not just those that make it into the LWR’s fuel. None of the actinides that enter the site will ever leave it, until the time comes that all the plutonium from thermal reactors has been used up, and excess fissile material must be bred and transported to new reactors that need an initial loading. As we’ll see later on in the book, for all the worry about the long-lived nuclear waste building up all over the world, we can easily use it all up in IFRs. And once it’s all used up, all we’ll need to keep the then existing IFRs operating is U-238, the principal component of depleted uranium (DU), which is a byproduct of uranium enrichment and the main component of all reactor fuels. We have so much of this already available that it could provide all the power needs of the entire planet for hundreds of years before we need to mine any more uranium. This is the same depleted uranium that is currently being used in both defensive and offensive weaponry, primarily by the United States. It would be a great improvement if we’d use it for generating electricity instead of shooting it at people."
From bottom of page 137, Prescription for the Planet, recommended by Dr James Hansen. It's free to download now.
http://www.thesciencecouncil.com/pdfs/P4TP4U.pdf