OSHA requires a lockout before any electrical equipment is inspected, serviced or repaired.
Machine and electrical accidents account for nearly one out of four deaths or disabling injuries in the workplace, according to databases maintained by government agencies. OSHA combats the rising tide of accidents with mandatory lock-out requirements.

Lockout is the term used to describe a procedure where the source of electrical power is removed and a lock is installed to prevent power from being turned on. OSHA requires a lockout before any electrical equipment is inspected, serviced or repaired. A danger tag also must be attached at the disconnect device.

According to McGill Electrical Product Group, Rosemont, Ill., a manufacturer of electrical safety products, lockout procedures are needed:

  • When there is danger of being injured if equipment power is turned on.
  • When there is equipment or machinery that does not need power to be on while maintenance is performed.
  • When removing or bypassing a safety device, such as a machine guard.
  • When the possibility exists of being caught in moving machinery.
  • When clearing jammed electrical equipment.