Fission as a controlled chain reaction, explained for engineers: why delayed neutrons make reactors controllable at all, why water is both coolant and safety mechanism, PWR versus BWR architectures, the decay heat problem that was the real lesson of Fukushima, Gen III+ passive safety, an honest look at SMRs, the fuel cycle from enrichment to dry casks, and why construction economics — not physics — decide nuclear's future.
Safety-Engineering
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How Nuclear Reactors Work