Applying the Hierarchy of Controls in hazardous workplaces

Elimination is the complete removal of the hazard in the workplace. For this it requires eliminating the risks completely at the source. This can be done by completely changing the process during work, completely removing the hazardous materials being used, or completely removing certain machinery in the workplace. 

Substitution is arguably a more suitable alternative than elimination. Although elimination is the preferred, substituting certain processes, materials, or machinery for safer alternative may be a more realistic option, such as choosing low dust alternative materials, or less powerful machinery which generates less gas. 

In scenarios where changing the entire workplace process isn’t possible, introducing engineering control to combat and control the hazard being generated is a suitable option. Controls such as Local Exhaust Ventilation (LEV), water suppression and damping methods, and enclosures and cabins ensures dust doesn’t become airborne.  

Administration controls ensures that workers remain away from direct contact with airborne dust in scenarios where dust cannot be eliminated, substituted or controlled. Examples like this include regular maintenance of all workplace environments, limiting worker exposure to gas generating processes and effective workplace clothing. 

Personal Protective Equipment is the last resort for controlling dust in the workplace, yet it can be effective if deployed correctly. With multiple options of PPE available, it’s important that PPE is correctly selected depending on the job which is being undertaken. Comfort, fit testing, individual usage and training are all essential for selecting the correct PPE.