All good points. It is perhaps a bit easier with software, where you can put comments and hyperlink directly in the code. It is a bit harder with a big, long-lived physical artefacts, such as a nuclear reactors.
The broader point was to make documentation a side effect of the work rather than a separate task. The opportunities to do this are not obvious but they are there.
I imagine this principle can probably be applied to nuclear power plants too but I dont really know how they work or what software they use so it's hard to come up with examples.
