Understanding Lockout/Tagout Requirements
Lockout/Tagout (LOTO) procedures are critical safety measures that protect workers from unexpected energization of equipment during maintenance and servicing. OSHA's Control of Hazardous Energy standard (29 CFR 1910.147) saves an estimated 120 lives and prevents 50,000 injuries annually.
What is Lockout/Tagout?
LOTO refers to specific practices and procedures that safeguard employees from the unexpected energization, startup, or release of hazardous energy while they perform service or maintenance on machines and equipment.
Types of Hazardous Energy
- Electrical: The most common and dangerous form
- Mechanical: Moving parts, springs, gravity
- Hydraulic: Pressurized fluids
- Pneumatic: Compressed air or gas
- Chemical: Stored chemical energy
- Thermal: Heat or cold energy
Required LOTO Program Elements
Every facility must develop and implement an energy control program that includes:
- Written procedures for each type of equipment
- Employee training on LOTO procedures
- Periodic inspections (at least annually)
- Standardized lockout/tagout devices
The Six-Step LOTO Process
- Preparation: Identify all energy sources and required controls
- Shutdown: Turn off equipment using normal procedures
- Isolation: Disconnect from all energy sources
- Lockout/Tagout: Apply locks and tags to isolation devices
- Stored Energy: Release or restrain all stored energy
- Verification: Confirm zero energy state before work begins
Asset Management Integration
Modern asset management systems can streamline LOTO compliance by:
- Storing equipment-specific LOTO procedures
- Tracking lock assignments and returns
- Documenting training records
- Scheduling annual procedure reviews
- Recording inspection results