Electrical 5 min
Lockout / Tagout (LOTO)
Stored energy kills. LOTO protects workers from unexpected energization during service and maintenance.
Key Points
- OSHA 29 CFR 1910.147 requires control of hazardous energy.
- One worker, one lock, one key. Never share or remove another worker's lock.
- Verify zero energy state with a meter — don't trust the switch.
Hazards to Watch For
- Unexpected start-up of machinery
- Stored hydraulic, pneumatic, or gravitational energy
- Capacitors holding electrical charge
- Steam and thermal energy lines
Best Practices
- Follow the written LOTO procedure for each piece of equipment.
- Notify all affected employees before locking out.
- Try-out: attempt to start the equipment after lockout to verify isolation.
- Only the worker who applied the lock removes it.
Discussion Questions
- Have you ever found a piece of equipment 'locked out' with no tag identifying who locked it?
- What energy sources are on your equipment besides electrical? (Hydraulic, pneumatic, gravity, thermal.)
- Who is authorized to remove a lock if the owner is off-site?
Crew Sign-In Sheet
Print Name
Signature
Date
Conducted by: ____________________________ Site: ____________________________
— FROM THE FIELD
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