LOTO

OSHA requires employers to establish a Lockout Tagout program and use procedures for affixing appropriate lockout devices or tagout devices to energy isolating devices, and to otherwise disable machines or equipment to prevent unexpected energization, start up or release of stored energy in order to prevent injury to employees.

The OSHA standard covers the servicing and maintenance of machines and equipment in which the unexpected start up of machines or equipment, or release of stored energy could cause injury to employees.
Work on cord and plug connected electric equipment for which exposure to the hazards of unexpected start up of the equipment may be controlled by the unplugging of the equipment from the energy source and by the plug being under the exclusive control of the employee performing the servicing or maintenance.
Each Authorized Employee must have and use their own locks & tags - these must be uniquely identifiable as lockout-tagout material and be identified to the specific worker.
Energy isolating device. A mechanical device that physically prevents the transmission or release of energy, including but not limited to the following: A manually operated electrical circuit breaker; a disconnect switch; a manually operated switch by which the conductors of a circuit can be disconnected from all ungrounded supply conductors, and, in addition, no pole can be operated independently; a line valve; a block; and any similar device used to block or isolate energy. Push buttons, selector switches and other control circuit type devices are not energy isolating devices.
Lockout. The placement of a lockout device on an energy isolating device, in accordance with an established procedure, ensuring that the energy isolating device and the equipment being controlled cannot be operated until the lockout device is removed.
Lockout device. A device that