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For Firefox users, there is media bias / propaganda / fact check plugin.
https://addons.mozilla.org/en-US/firefox/addon/media-bias-fact-check/
- Consider including the article’s mediabiasfactcheck.com/ link
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Nuclear power is great. But I do wonder if they might be targets in a war with Russia or something. Can they be prevented from meltdown in the case of a missile strike?
Huh? Modern nuclear power plants automatically stop the reaction. In addition to other safety features monitoring things like temperature, radiation, etc. for automatic shutoff, the rods are held in place via electromagnetism. In the event of a power loss, the reaction will stop because the rods fall out of place. (This may just be one type; other modern reactors have ways of automatically stopping the reaction in the event of a power loss.)
The main reaction can be stopped within seconds, but the secondary reaction cannot. If the reactor isn’t sufficiently cooled by running water through it, it will meltdown due to the secondary reactions.
Those are old designs, new ones basically stop once the water is removed.
Hence the 'negative void coefficient', modern designs lose reactivity as the water is removed.
Look at pebble bed and other designs.
As far as I know (I'm not an expert), negative void coefficient only affects the fission reaction, i.e. the controlled splitting of uranium atoms. The uranium atoms split into smaller unstable atoms, which decays over time causing heat. If the decay heat isn't removed, the core will melt.
Pebble Bed Reactors seem to be generation IV reactors, and I don't think there are any generation IV reactors in commercial use as of today. Again, my knowledge is limited, but I believe most reactors in commercial use are some kind of water cooled, water moderated reactors. For example, European Pressurised Reactor (EPR) is one of the latest designs commissioned in commercial use, and that design includes 4 emergency coolant systems.
https://en.wikipedia.org/wiki/HTR-PM
China has the pbr in production as modular reactors.
The west is irrationally afraid, but China understands nuclear is inherently safer than fossil fuels after having lost thousands to pollution.