EPO inside data centre :-(
We were experienced IT staff, so the Emergency Power Off was a large twistable lever located in the middle of the data centre complex (so that people would hurry the least distance on average whilst their coworker was in trouble). Not such a great position when the computer room started to fill with water and a volunteer was needed to wade across the sparking computer room to turn the EPO switch. Nowdays there's a second EPO switch inside a cabinet on the outside wall of the building -- that's got some theoretical issues, but none of those issues put people's lives at risk.
Biting the hand that feeds IT
