The lifesaving practice of controlling hazardous energy is commonly referred to as “lockout/tagout.” Conditions that require lockout/tagout typically occur during maintenance, service, or repair operations. OSHA’s standard of controlling hazardous energy categorizes three types of workers as related to lockout/tagout operations: authorized workers, affected workers, and other workers. Employees who may be impacted or affected by the de-energization of equipment or processes are “affected workers” and they are the focus of this program. Although affected workers do not perform lockout procedures, they are required to know how to interact with the authorized employees who actually perform the lockout.