Command and Control (a 2013 book by Schlosser about nuclear weapon accidents) has some good examples of this. Some examples from my review:
Technical safety is contingent and probably matters: technical measures like 1-point safety (which was almost measured incorrectly) or Strong link/weak link probably avoided some accidental nuclear explosions (which might have triggered a nuclear war), required non-trivial technical insights and quiet heroes to push them through
Command and Control (a 2013 book by Schlosser about nuclear weapon accidents) has some good examples of this. Some examples from my review:
(this is talking about nuclear weapons, in case someone doesn’t know the context and doesn’t want to click the links)