Silica standard becomes a binding WEL (0.05 mg/m³)
critical priorityone off
Due
1 December 2026
179 days from today
What to file
The 0.05 mg/m³ exposure standard for respirable crystalline silica becomes a legally binding Workplace Exposure Limit (WEL). A further cut to 0.025 mg/m³ is only proposed, not adopted.
Who is affected
Any PCBU in construction, mining, manufacturing or stone-cutting whose workers are exposed to respirable crystalline silica above the WEL during normal operations.
Penalty if missed
WHS Act Category 1-3 offences — up to $5.34M for body corporates and 5 years' imprisonment for officers; HSR PINs and prohibition notices likely.
Applies to
PCBUs with workers exposed to respirable crystalline silica
Prep checklist
- Identify all silica-generating tasks and processes
- Conduct (or refresh) air monitoring against the 0.05 mg/m³ WEL
- Update the hazardous-chemicals register and SDSs
- Implement controls per the hierarchy (substitution > engineering > admin > PPE)
- Update health monitoring program for exposed workers
- Brief HSRs and update SWMS
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