Worker electrocuted while working inside fire suppression system, says MSHA

A 44-year-old contract electrician was electrocuted after contacting a 120V cable while working inside a fire suppression system’s electrical panel, says the Mine Safety & Health Administration (MSHA).

Best Practices: 

  1. Ensure miners receive proper training on all electrical related tasks.
  2. Ensure that circuit breakers and switches are properly labeled.
  3. Properly lock-out and tag-out electrical circuits prior to working on them.
  4. Wear properly rated and well maintained personal protective equipment while troubleshooting or testing energized circuits.
  5. Use properly insulated tools when performing electrical work.
  6. Use properly rated electrical meters and non-contact voltage testers to ensure electrical circuits have been de-energised prior to performing electrical work.



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