Control of Hazardous Energy Sources (Lockout/Tagout–LOTO)

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29 CFR 1910.147

The OSHA Lockout/Tagout standard covers the servicing and maintenance of machines and equipment in which the unexpected energization or start up of the machines and equipment, or the release of stored energy could cause injury to employees.

This rule essentially requires that energy sources for equipment be turned off or disconnected and that the switch either be locked or labeled with a warning tag.

Who Is Covered?

About three million workers actually servicing equipment face the greatest risk.  These include craft workers, machine operators, and laborers.  According to OSHA data, workers who operate packaging and wrapping equipment, printing presses and conveyors experience the highest number of accidents associated with lockout/tagout failures.

Workers who are involved in agriculture, maritime and construction are not currently covered by this rule.  In addition, workers involved in the generation, transmission and distribution of electric power by utilities and work on electric conductors and equipment are excluded because the procedures for these specific industries are included in other safety and health standards.

General Requirements Under The Standard:

Employers are required to: