A flash fire killed an electrician's apprentice when he touched a switch he thought was de-energized. The mishap occurred at a transformer station. The apprentice was part of a team doing modifications on equipment at the station. Certain lines at the worksite had been de-energized and tagged before this crew arrived. The team, including the foreman, understood that all electrical equipment in the station had been de-energized and all areas of the station were safe. In fact, certain untagged lines were not de-energized. The victim left the assigned work area and went aloft on a catwalk. When he attempted to measure a […]