Anything designed by man, built by man, ran by man, installed safety backups by man can and will, when circumstances fall in line, be destroyed by mans over looking the other "What If's". If a human touched it, it can fail.
Anything designed by man, built by man, ran by man, installed safety backups by man can and will, when circumstances fall in line, be destroyed by mans over looking the other "What If's". If a human touched it, it can fail.
There's a high price to pay for not fixing things that should have been fixed. The system was designed properly, at least properly to some extent. If the automatic change over switch had been repaired before installing the new battery charging system the disaster never would have happened.
Over the years I've seen examples where equipment was operated when there was a known problem with it and because some additional problem happened the combination of multiple problems ended up in a much bigger problem then would have happened if the first problem had been repaired on a timely basis.
The more plumbing there is the easier it is to clog up the pipes. Are there failure drills as pilots have failure drills when training in their simulators. i know nothing about power plants cept for the few I have been in are complicated.