When the equipment or tool is in maintenance or cleaning, the power is cut off and the equipment or tool cannot be moved. All energy sources (electric, hydraulic, pneumatic, etc.) are turned off. Objective to ensure that no one is injured when working beside the machine.

Locking means to ensure that once the energy is turned off, the equipment will be kept in a safe state. Locking helps to prevent injury or death caused by careless operation of equipment.