Electrical 5 min

    Lockout / Tagout (LOTO)

    Stored energy kills. LOTO protects workers from unexpected energization during service and maintenance.

    Back to Talks

    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

    1. Have you ever found a piece of equipment 'locked out' with no tag identifying who locked it?
    2. What energy sources are on your equipment besides electrical? (Hydraulic, pneumatic, gravity, thermal.)
    3. 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

    Need a safety professional on site?

    SOS Safety Consulting places experienced safety professionals on construction projects and builds the project-specific documentation behind them.

    Talk to a Safety Consultant