OSHA Control of Hazardous Energy
U.S. regulation requiring procedures for controlling hazardous energy during the servicing and maintenance of machinery—commonly known as Lockout/Tagout (LOTO).
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Lockout/Tagout (LOTO) | United States | Mandatory Safety Standard
The OSHA 1910.147 standard—commonly known as the Lockout/Tagout (LOTO) regulation—establishes minimum requirements for controlling hazardous energy during servicing and maintenance of machines and equipment. Its purpose is to prevent injuries caused by the unexpected startup or release of stored energy.
This standard applies across a wide range of industrial settings, including manufacturing, utilities, oil and gas, construction, and data centers. It mandates that employers develop and enforce an energy control program, which includes written procedures, employee training, device labeling, and periodic audits.
Key Requirements
- Energy control procedures: Step-by-step instructions for isolating and verifying hazardous energy.
- Lockout/tagout devices: Must be standardized, durable, and clearly identifiable.
- Authorized vs. affected employees: Clear role separation with required training.
- Annual audits: Required to evaluate program effectiveness and ensure compliance.
Inadequate Employee Training
Industrial maintenance often involves teams. Failing to use group lock boxes or coordinate procedures can create dangerous gaps, especially during shift changes.
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