Quick Summary
Lockout Tagout (LOTO) is a critical safety procedure used to prevent accidental machine startup during maintenance or servicing. OSHA requires proper LOTO procedures to protect workers from hazardous energy sources. This guide covers requirements, equipment, and best practices for compliance in 2026.
What Is Lockout Tagout (LOTO)?
Lockout Tagout (LOTO) is a safety procedure that ensures machines are properly shut off and cannot be restarted before maintenance or repair work is completed.
It involves isolating energy sources such as electrical, mechanical, hydraulic, or pneumatic systems.
Why LOTO Is Critical for Workplace Safety
- Prevents accidental equipment startup
- Protects workers from serious injury or death
- Reduces liability and workplace incidents
- Ensures OSHA compliance
OSHA Lockout Tagout Requirements
OSHA standard 29 CFR 1910.147 requires employers to implement energy control procedures to protect workers during servicing and maintenance.
View the official standard: OSHA Lockout Tagout Standard (1910.147)
Additional workplace safety guidance: NIOSH LOTO Safety Resources
Types of Hazardous Energy Sources
- Electrical energy
- Mechanical energy
- Hydraulic systems
- Pneumatic pressure
- Thermal energy
- Chemical energy
Essential LOTO Equipment
1. Lockout Devices
Used to physically isolate energy sources such as switches, valves, and breakers.
2. Tagout Devices
Warning tags that indicate equipment is under maintenance and must not be operated.
3. Padlocks
Personal locks used by workers to secure energy isolation points.
4. Group Lock Boxes
Allows multiple workers to secure equipment safely during maintenance.
Step-by-Step Lockout Tagout Procedure
- Prepare for shutdown
- Shut down equipment
- Isolate energy sources
- Apply lockout/tagout devices
- Release stored energy
- Verify isolation before work begins
Common LOTO Mistakes to Avoid
- Failing to verify energy isolation
- Using incorrect lockout devices
- Lack of employee training
- Removing another worker’s lock
PPE Used with Lockout Tagout
While LOTO focuses on energy isolation, PPE is still essential for protection during maintenance tasks.
- Protective gloves
- Safety glasses
- Face shields
- High-visibility clothing
Explore visibility safety gear: High-Visibility Clothing Guide
Best Practices for LOTO Compliance
- Develop written procedures
- Conduct regular training
- Inspect LOTO devices routinely
- Audit procedures annually
Related Safety Equipment
Conclusion
Lockout Tagout is one of the most important safety procedures in industrial environments. By following OSHA requirements and implementing proper LOTO practices, employers can significantly reduce workplace injuries and ensure compliance.
People Also Ask
What is Lockout Tagout used for?
It is used to prevent machines from being accidentally started during maintenance.
Is LOTO required by OSHA?
Yes, OSHA requires Lockout Tagout procedures under standard 1910.147.
What are lockout devices?
Devices used to physically isolate energy sources to prevent machine operation.
Can tagout be used without lockout?
Only if lockout is not possible, but additional safety measures are required.
Who is responsible for LOTO procedures?
Employers must implement procedures, and workers must follow them.
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.