Managing WHSControlling risks – the hierarchy of control

Eliminate:

Eliminate the hazard – remove it completely. For example, if noise is a hazard – remove the source of the noise.

SubstituteWhere it is not possible to completely eliminate the hazard, minimise the risk by substituting it with a hazard of a lower risk. For example, where glass beakers full of liquid in a chemistry lab are high risk due to being easily broken, substitute them with Pyrex beakers.

Isolate:The third option on the hierarchy is to isolate – this can mean either to isolate personnel from the risk or vise versa. For example, move dangerous chemicals into another room.

Engineering:Apply engineering controls such as putting guards on dangerous machinery, installing automatic cut-off switches, or providing assistive equipment such as a trolley for lifting heavy loads. Note that this can be a costly option.

Administration:Further down the hierarchy is the option to apply administrative controls. Examples of these include developing workplace procedures, providing specialist training, or putting a supervisor in place to monitor the environment.

Personal Protective Equipment (PPE)

Considered a last resort control, personal protective equipment such as safety goggles and glasses will minimise the risk but not really address the hazard.