Earlier quoted context omitted.
If true, that sounds like a serious indictment of manufacturing power sources with the ability to destroy a good portion of the Earth. That does remind me of the incident where a technician dropped a socket off a wrench and quite nearly detonated a 9 megaton bomb in Arkansas.
This type of thing is common in all industries - so much so that one way that railroad workers would strike is to “work to rule” - follow every single safety regulation to a T causing productivity to plummet. Many safety rules can be summed up as “don’t be a dumbass” but trying to proceduralize that can be difficult. It’s part of the reason nuclear stuff is so expensive - you have to work to rule every single time.
Indeed, if memory serves, the incident I mentioned above was somewhat attributed to an old rubber buffer that was supposed to be pressed against the ICBM - by regulation, it should have been replaced due to age but wasn't, and it was dry and cracked so it did not form a good seal which allowed the socket to fall through. That failure to follow regulation caused the (non-nuclear) explosion of an ICBM, killed a person and injured others, and nearly caused a nuclear explosion on US soil. I suppose it should be expensive.