During equipment maintenance, workers can be killed or seriously injured if the equipment they are working on starts up unexpectedly. Locking and tagging out equipment ensures that it cannot suddenly release energy and harm a worker.
Definitions:
Lockout/Tagout Process: Before starting work on equipment, energy-isolating devices (EIDs) are locked and tagged out personally by every person working on the equipment. Every maintenance worker works only under the protection of their OWN lock. Any stored energy in the machine is then dissipated and energy isolation is verified. Only then does servicing/maintenance work begin.
Lockout/Tagout prevents:
Lockout/tagout protects not only the workers servicing the equipment, but also the equipment and those working around the equipment.