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Human Resources Department

Occupational Safety & Health Unit

Control of Hazardous Energy (LOTO)

Photo of a LochOut/Tag Out Lock and Warning Tag

During the servicing and maintenance of machines and equipment, the unexpected startup or release of stored energy can result in serious injury or death to workers. Following appropriate Lock Out/Tag Out (LOTO) protocols can mitigate the hazard and protect workers.  

Hazardous energy sources include but are not limited to directly energized or stored sources:

  • Electrical
  • Mechanical
  • Hydraulic
  • Pneumatic
  • Chemical
  • Thermal
  • Gravitational

To get more information on the applicability of this program for a specific County operation please contact the corresponding departmental Safety Coordinator.

For further information on specific regulatory guidelines please refer to the link(s) below.

Control of Hazardous Energy (LOTO) Guidelines

Cal-OSHA E-tool (LOTO for Employers)