Lockout/Tagout (LOTO) safety is a critical process designed to protect workers from hazardous energy during maintenance and servicing operations. This process involves isolating energy sources, securing them with locks, and clearly marking the equipment to prevent accidental start-ups, which can lead to serious injuries or fatalities. LOTO safety is a core component of workplace safety in many industries, especially in manufacturing, construction, and energy sectors.

Lockout: Physically securing energy-isolating devices with locks, making it impossible for machinery or equipment to be energized until the lock is removed.
Tagout: Using warning tags to alert workers of the presence of locked-out energy sources, indicating that the equipment should not be operated.
The combination of these two actions ensures tht all energy sources (mechanical, electrical, hydraulic, thermal, or chemical) are safely isolated before maintenance work begins.a