Lockout & Tagout (LOTO)

Lockout & Tagout (LOTO) is a safety procedure that prevents accidental exposure to hazardous energy during maintenance, repair, or servicing of equipment.

How LOTO Works:

  1. A lockout device (e.g., padlock) secures the energy source.
  2. A tagout device (e.g., warning tag) informs employees not to operate the equipment.
  3. The equipment is shut down and isolated from energy sources.
  4. Stored energy is checked and released.
  5. Isolation is verified through a test run.

When is LOTO Required?

  • When equipment could unexpectedly start up or release stored energy.
  • When workers could be injured during cleaning, repairing, or servicing.

Examples of Energy Isolation Devices:

  • Valves
  • Breakers
  • Switches
  • Blank flanges for piping systems

LOTO Procedure Steps:

  1. Notify affected employees.
  2. Identify hazards and procedures.
  3. Shut down the equipment.
  4. Isolate from the energy source.
  5. Apply lockout/tagout devices.
  6. Check for stored energy.
  7. Verify isolation and test.
  8. Restore equipment to operation after completing work.
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