It is a written system of how hazardous energy will be controlled before a worker is exposed to it. For instance, when repairing a machine, if the machine were started while a worker was still making repairs, the worker could be killed or injured. Lock out/ tag out would prescribe how to turn off all power, lock it in the off position, tag it (what is turned off, by who, when, why) and release or block all stored energy in the machine.
ensure that their locks and tags remain in place during their part of the lockout/tagout procedure
Ground Safety
an action performed by a second authorized worker that requires checking the position of an energy-isolating device for the application or removal of a lockout/tagout.
ground safety
Proper lockout tagout practices safeguard workers from the release of hazardous energy. Workers must be trained in the function of the energy control program and have the skills required for safe application usage and removal of the energy control devices.
29 CFR 1910.147
Chapter 21
performing lockout/tagout (LOTO) on an energized electrical conductor
chapter 21
notify, Shut down, Isolate/Relieve Energy Source(s), Lock out, Verify, Perform
locks and tags must clearly indicate that the operation of the energy- isolating device is prohibited
locks and tags must clearly indicate that the operation of the energy-isolating device is prohibited