SOURCE: MSHA | December 29, 2020
On November 23, 2020, a miner was electrocuted while troubleshooting a disconnect box for the classifier drive motor. The victim had the electrical disconnect box open and the main power supply was not deenergized.
- Ensure electrical circuit components are properly designed and installed by qualified electrical personnel.
- Ensure electrical troubleshooting and work are performed by people with proper electrical qualifications. Positively identify the circuit on which work will be conducted.
- Before performing electrical work, locate the visual disconnect away from an enclosure and open it, lock it, and tag it, to ensure all electrical components in the enclosure are de-energized. Verify by testing for voltage using properly rated test equipment.
- Wear properly rated and well maintained personal protective equipment, including arc flash protection such as a hood, gloves, shirt and pants.
- Train miners on safe work practices for electrical equipment and circuits.
This is the 26th fatality reported in 2020, and the second classified as “Electrical.”
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