

| General | Lockout tagout (LO/TO) is used to control potentially hazardous energy before someone works on a system or piece of equipment. |
| Examples of systems that require lock out tag out include: 1. Live electrical systems 2. Hydraulic systems 3. Steam 4. Systems with an engulfment hazard 5. Maintenance work 6. Mechanical systems 7. Areas where equipment could potentially move (e.g., elevator pits, adjacent to personnel hoists). Only trained and authorized personnel may apply a lock and tag. Never turn on a system that has a lock or tag. Do not remove someone else’s lock or tag. |

