Air Monitoring Explained: A Practical Guide for WA Businesses
Air monitoring is one of the most important tools for protecting workers from airborne hazards - especially asbestos fibres. For Western Australian businesses, it’s also a key compliance requirement under the WHS Regulations 2022.
What Is Air Monitoring?
Air monitoring measures airborne particles - most commonly asbestos fibres - to determine whether an area is safe for workers or the public. Because asbestos fibres can’t be seen or smelled, monitoring provides essential, scientific evidence of exposure levels.
When Is Air Monitoring Required?
In WA, air monitoring must be carried out by an independent licensed assessor during:
Class A (friable) asbestos removal
Any work where asbestos fibres may become airborne
Before reoccupying an area after asbestos work (clearance monitoring)
Complaints, incidents, or suspected disturbance of ACMs
Types of Air Monitoring
Background Monitoring – checks fibre levels before work begins
Exposure Monitoring – tests what workers breathe during the job
Clearance Monitoring – confirms an area is safe to re-enter
Why Businesses Need It
Air monitoring helps WA businesses:
Protect workers from invisible hazards
Comply with WorkSafe requirements
Detect failed controls early
Obtain clearance certificates for safe reoccupation