The Safety LOTO Lock is part of a comprehensive safety procedure called Lockout/Tagout, which is designed to prevent the accidental release of hazardous energy during the servicing or maintenance of machinery. In simpler terms, the LOTO system ensures that energy sources such as electricity, hydraulics, or gas are completely isolated and cannot be accidentally re-energized while workers are performing their tasks. The lock, usually a sturdy, often brightly colored device, is applied to energy-isolating equipment such as circuit breakers, valve handles, or power switches, preventing them from being accidentally turned on or off.