Arlington, VA- Prompted by reports of three recent fatalities involving electricity, the Mine Safety and Health Administration has issued a safety alert.
Electricity has killed three people in the mining industry since August 7, 2019.
An electrician contacted an energized component of a 4,160 VAC electrical circuit while adjusting the linkage between the disconnect lever and the internal components of the panel that supplied power to the plant feed belt motors. A contract electrician contacted an energized 120 VAC conductor while working inside a fire suppression system’s electrical
panel. An electrician contacted an exposed energized connector while troubleshooting a 995 VAC flooded bed scrubber motor circuit on-board a continuous mining machine.
MSHA offers numerous best practices for electrical incident prevention. Among them:
-Perform lockout/tagout procedures on circuits before working on electrical equipment.
-Don’t rush, and never work alone. Talk with co-workers and confirm your plan is safe.
-Identify and control all hazardous energy sources before conducting tasks, and follow safe work procedures.
-Train miners on equipment they may use.
-Always perform troubleshooting without power. If you must troubleshoot an energized circuit, use appropriately rated personal protective equipment to prevent hazards.