Electrical lockout tagout is the process of locking and tagging sources of hazardous energy. These energy sources supply power to a variety of machines that need routine maintenance and servicing. To protect maintenance and repair workers from accidents and injuries, hazardous energy sources need to be shut down.
The use of energy isolation devices or lockout tagout devices physically restrains electrical power sources from accidental or unintended re-energizing. These devices include circuit breaker locks, plug locks, and cable locks. They are secured with personal safety locks and subsequently outfitted with tags that include important information about the lockout tagout procedure in place.