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this post was submitted on 22 Nov 2024
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I know there have been plenty of breeder reactors. What I can't find is a breeder reactor in a scale large enough to generate power for a city. In fact, from what I read, that's been tried more than once without success. Can you point me to a breeder reactor that was actually a useful test case for powering a city?
The Wikipedia page for breeder reactors has a whole list you can even sort by output capacity. For example, the BN-800.
What I'm reading on Wikipedia is that none of them have been used for large scale power generation yet. Which was what I was saying. Wikipedia showing what their output capacity is does not show how long that output capacity can be maintained or how much it might fluctuate.
Otherwise, what do you think the reason is that no country has yet to use one to power any cities?
Here's the generation statistics of the BN-800 reactor I mentioned before: https://pris.iaea.org/PRIS/CountryStatistics/ReactorDetails.aspx?current=451 It's been operating at about 70% of it's rated capacity basically since it was first turned on, that's large scale power generation. Breeder reactors have been in commercial use for decades (see also: Phenix and Superphenix).
The simple reason why breeder reactors aren't the default is because most reactors don't need to be breeders. The two main upsides of a breeder reactor is a) breeding of nuclear material, which as I said before was only ever a concern in the very early days of nuclear power. We have thousands of years' worth of fuel available now. b) The reuse of nuclear waste for additional power generation. Of course you have to have nuclear waste to reuse first, which necessitates many other, non-breeder reactors already being in use, so breeder reactors are usually restricted to countries that already have significant investment into nuclear power, like France, Russia, China, etc.. If you don't need to breed more nuclear fuel, and you don't have waste to reprocess you might as well keep it simple and build a regular LWR reactor.