"But it also so much more dangerous when nuclear accidents happen than anything else."
This is a facile assumption but it's almost certainly false. The Banqiao dam disaster killed 25,000 people directly, and destroyed 6 million buildings (it caused 145,000 further deaths due to famine). Such a disaster far outstrips even Chernobyl, which was about as maximally bad as any nuclear reactor accident can be (runaway fission reaction generating massive amounts of radionuclides; no worthwhile reactor containment structures; the reactor core melting down, catching on fire, and spewing huge amounts of radiation into the wind).
now please factor in duration and affected area and population into account when talking about severity of nuclear accidents, the same way you factored in hours and miles when you wrote about aviation safety.
This is a facile assumption but it's almost certainly false. The Banqiao dam disaster killed 25,000 people directly, and destroyed 6 million buildings (it caused 145,000 further deaths due to famine). Such a disaster far outstrips even Chernobyl, which was about as maximally bad as any nuclear reactor accident can be (runaway fission reaction generating massive amounts of radionuclides; no worthwhile reactor containment structures; the reactor core melting down, catching on fire, and spewing huge amounts of radiation into the wind).