Hierarchy of control A series of hazard controls that should be applied in the following order (a number of these options may be considered and applied individually or in combination): � Eliminate: completely eliminating the hazard � Substitute: replacing the material or process with a less hazardous one � Redesign: redesigning the equipment or work processes � Separate: isolating the hazard by guarding or enclosing it � Administrative: providing controls such as training, procedures, etc.