Energized Electrical Found in Overhead Ceiling Grid

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Type:  Lessons Learned

Publisher:  Idaho National Laboratory, Idaho Falls, ID

Published As:  Public


Topics:  Electrical, Work Management/Planning, Hazardous Energy Control

On March 24th, 2020, a construction subcontractor was working on the 3rd floor of the Willow Creek Building (WCB). The subcontractor was preparing existing ceiling tiles for the installation of new lighting fixtures. When the subcontractor moved the next ceiling tile to be worked on, a spark occurred from unidentified exposed live conductors that were coiled up in the overhead ceiling grid. No injuries occurred due to this event.

LESSONS LEARNED: (1) All exposed conductors must be properly secured before they are placed in their final location and/or a location that is not readily or easily accessible; (2) When changes to the work scope occur, stop/pause-work and evaluate the situation to ensure that inadvertent hazards are not created: (3) Post-job reviews provide the opportunity to discuss the work evolution and any unanticipated job-site conditions or workarounds, and to compare what actually happened to what was planned.

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