Lockout/Tagout-Environmental Health & Safety - Carnegie Mellon University

Lockout / Tagout

Anyone who works with equipment or machinery where there is a risk of an unexpected startup, energization, or release of stored energy that could cause injury must implement the lockout/tagout program and receive lockout tagout training.

Types of energy that have the potential to cause injury include (but are not limited to):

  • Electricity
  • Trapped pressure
  • Spring tension
  • Components that could fall or shift position
  • Hydraulic
  • Pneumatic
  • Piping and vessels
  • Temperature extremes

Any form of energy that could cause injury, whether on the above list or not, must be neutralized and a lock attached. NOBODY is permitted to remove someone else’s lock except under very specific conditions, and then only in a specific manner. If you encounter a locked out system that creates a problem for you, you must contact the person whose name is on the lock. If no name is available, contact Environmental Health & Safety (8-8182), but DO NOT remove the lock. To do so could jeopardize the safety of someone working on or near the system.

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