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Calendar/CWLTH

Silica standard becomes a binding WEL (0.05 mg/m³)

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Due

1 December 2026

179 days from today

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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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Industries affected