OH Consultant

Silica Dust Monitoring

Respirable crystalline silica (RCS) exposure assessment

Current WES
0.05 mg/m³
New WEL (Dec 2026)
0.025 mg/m³-50%

What Is Silica Dust Monitoring?

Silica dust monitoring measures worker exposure to respirable crystalline silica (RCS) — a fine dust generated when cutting, grinding, drilling, or crushing materials containing quartz. RCS particles are small enough to penetrate deep into the lungs, causing irreversible scarring known as silicosis.

Australia's current Workplace Exposure Standard (WES) is 0.05 mg/m³ TWA-8h. The forthcoming Workplace Exposure Limit (WEL), effective December 2026, halves this to 0.025 mg/m³ — aligning with international best practice and reflecting updated health evidence on silicosis and lung cancer risk.

How Is It Done?

Sampling via personal pump + cyclone. Lab analysis by XRD (NIOSH 7500) or IR (NIOSH 7602).

When You Need This

  • +SafeWork improvement notice
  • +Head contractor requirement
  • +Baseline monitoring for new process or site
  • +WEL transition preparation
  • +Workers cutting, grinding, or drilling silica-containing materials
  • +Health surveillance triggers indicate potential overexposure

Relevant Standards

AS 2985NIOSH 7500NIOSH 7602

Common Industries

Related Monitoring

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