Quick Summary
Lockout Tagout (LOTO) devices are essential for isolating hazardous energy sources during maintenance and servicing. OSHA requires proper use of lockout devices to prevent accidental machine startup. This guide explains the types, uses, and compliance requirements for 2026.
What Are Lockout Tagout Devices?
Lockout Tagout devices are physical tools used to isolate energy sources and prevent machinery from being powered on during maintenance or repair work.
These devices ensure worker safety by controlling hazardous energy such as electrical, mechanical, hydraulic, or pneumatic systems.
Why Lockout Tagout Devices Are Important
- Prevent accidental equipment startup
- Protect workers from serious injuries
- Ensure OSHA compliance
- Reduce workplace liability
OSHA Requirements for Lockout Tagout
OSHA standard 29 CFR 1910.147 requires employers to implement energy control procedures using lockout/tagout devices.
View OSHA standard: OSHA Lockout Tagout Standard (1910.147)
Additional safety guidance: NIOSH Lockout Tagout Resources
Types of Lockout Tagout Devices
1. Electrical Lockout Devices
Used to secure circuit breakers, switches, and electrical panels to prevent accidental activation.
2. Valve Lockout Devices
Designed to lock valves in the off position, preventing the release of hazardous fluids or gases.
3. Plug Lockout Devices
Prevent electrical plugs from being inserted into outlets during maintenance.
4. Cable Lockout Devices
Flexible solutions used for complex lockout scenarios involving multiple energy sources.
5. Group Lockout Boxes
Allow multiple workers to secure equipment using individual locks.
How Lockout Tagout Devices Are Used
- Shut down equipment
- Isolate energy sources
- Apply lockout devices
- Attach warning tags
- Release stored energy
- Verify isolation before work begins
Common Mistakes to Avoid
- Using incorrect lockout devices
- Skipping verification steps
- Not training employees
- Removing another worker’s lock
PPE Used with Lockout Tagout
While LOTO devices control hazardous energy, PPE adds another layer of protection.
- Protective gloves
- Safety glasses
- Face shields
- High-visibility clothing
Learn more about visibility safety: High-Visibility Clothing Guide
Industries That Use Lockout Tagout Devices
- Manufacturing
- Construction
- Energy and utilities
- Warehousing
- Maintenance operations
Related Safety Equipment
Conclusion
Lockout Tagout devices are essential for controlling hazardous energy and protecting workers during maintenance tasks. Proper use of these devices ensures OSHA compliance and significantly reduces workplace accidents.
People Also Ask
What are lockout tagout devices used for?
They are used to isolate energy sources and prevent machinery from starting during maintenance.
Is lockout tagout required by OSHA?
Yes, OSHA requires lockout tagout procedures under standard 1910.147.
What types of LOTO devices exist?
Common types include electrical, valve, plug, cable lockouts, and group lockout boxes.
Who can remove a lockout device?
Only the worker who applied the lock should remove it.
What happens if LOTO is not followed?
Failure to follow LOTO procedures can lead to serious injuries or fatalities.
About the Author
Mick Chan is a Safety Supplies industry professional with over 15 years of experience specializing in OSHA compliance, PPE regulations, and workplace safety solutions.