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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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I don’t think you’d want to tie your ability to cool the reactor to outside air temperatures. Bodies of water do warm up, but are generally a much better “ultimate heat sink”.
Eh, as long as you designed it with a reasonable factor of safety (say, highest temperature ever recorded at that location +5C, maybe) it'd be fine. I think the cost is a far, far bigger issue because the radiator necessary would be absolutely gigantic. Plus if you've got fans cooling it (so you can make it smaller) instead of passively cooling it, that's another point of failure, although I suppose if getting river water relies on pumps then it isn't any worse.
Typical safety margins for weather use 50 or 100 year events. The system that is rated for that weather event has a margin in it. Roofs, for example, are designed to withstand the snow loads for the worst snow storm in 50 years but the truss systems which are rated to handle that load can handle more.
I know, but the safety margin for a nuclear reactor should be atypical.