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Lockout Tagout (LOTO)

What Does Lockout Tagout (LOTO) Mean?

Lockout tagout (LOTO) is a safety procedure that ensures that dangerous machinery and energy sources are properly shut off and are not started up unexpectedly while maintenance or service work is being completed. Activating the equipment or power source before these tasks are complete puts the person maintaining or servicing it at risk.

Energy sources that should be locked out during maintenance could be:

  • Electrical
  • Mechanical
  • Hydraulic
  • Pneumatic
  • Chemical
  • Radiation
  • Thermal

Safeopedia Explains Lockout Tagout (LOTO)

Lockout tagout procedures ensure that the hazardous power sources are isolated and rendered inoperative for a given period of time or simply until maintenance work is complete.

In most cases, a LOTO procedure involves two pieces of equipment:

  1. A lock that will be secured to the power source and prevent it from being switched on
  2. A tag affixed to the locked device that cautions others not to attempt to use it
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Synonyms

Lockout, Tagout

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Safety EquipmentBest PracticesSafety HazardLockout Tagout (LOTO)

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