05.4 – Energy Isolating Device

An energy isolating device is

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; a line valve; a block; and other devices used to block or isolate energy. 

Note: Push-button selector switches and other control-type devices are not energy-isolating devices.

All lockout devices (including all tags used with lockout devices) shall 

1. be uniquely identified; 
2. be the only devices used for controlling hazardous energy; 
3. not be used for other purposes; 
4. be capable of withstanding the environment to which they are exposed; 
5. be standardized within the facility (or company) in at least one of the following criteria:
   1. colour; (know your company colour scheme)
   2. shape;
   3. size; or
   4. iv) specific markings; and 
6. be substantial enough to prevent operation of the energy-isolating device without excessive force, unusual measures, or destructive techniques, e.g., bolt cutters or other metal-cutting tools.
   

An information tag shall be used with each lockout device unless the lockout device itself has the required information attached. 

Each lockout device, and tag if used, shall identify the authorized individual who applied the device and may include the date and reason for lockout – and remain legible for the duration of use.