New Crystalline Silica Regulations: What Construction Businesses Need to Know

Understanding the New Silica Regulations

From 1 September 2024, Australia introduced significantly strengthened regulations for managing crystalline silica exposure across all industries, with particular implications for the construction sector. These changes follow the national ban on engineered stone that commenced 1 July 2024.

The Work Health and Safety Amendment (Crystalline Silica Substances) Regulation 2024 expands protections to over 600,000 workers who may be exposed to respirable crystalline silica (RCS) dust.

What is a Crystalline Silica Substance?

Under the new regulations, a crystalline silica substance (CSS) is any material containing at least 1% crystalline silica by weight. Common examples in construction include:

• Natural stone products (marble, granite)
• Engineered stone
• Porcelain and ceramic tiles
• Sandstone and concrete
• Bricks and pavers
• Cement products and render

Key Compliance Requirements

Risk Assessment

Before any work involving CSS processing begins, you must assess whether the work is 'high risk.' High-risk processing includes dry cutting, grinding, or drilling of CSS without effective dust controls.

Silica Risk Control Plan

For high-risk work, you must prepare a written Silica Risk Control Plan that details the specific controls to be implemented. Work must cease if the plan is not followed.

Training Requirements

All workers involved in high-risk CSS processing, or at risk of RCS exposure, must receive crystalline silica training before commencing work.

Exposure Monitoring

The Workplace Exposure Standard for RCS remains at 0.05 mg/m³ over an eight-hour working day. Any exposure exceeding this limit must be reported to the regulator.

Practical Control Measures

To comply with the regulations, construction businesses should implement:

• Water suppression: Use water-fed tools for cutting and grinding
• On-tool extraction: Connect tools to vacuum systems with HEPA filtration
• Local exhaust ventilation: Install extraction systems in enclosed work areas
• Respiratory protective equipment: P2 respirators minimum for high-risk work
• Housekeeping: Regular wet cleaning—never dry sweep silica dust

State Adoption Status

New South Wales, Queensland, Tasmania, and Western Australia adopted the model laws from 1 September 2024. South Australia, the ACT, and Northern Territory have followed with similar requirements. Victoria has largely aligned with minor variations.

Next Steps for Your Business

Review your current processes involving CSS and assess whether they constitute high-risk work. Ensure your Safe Work Method Statements are updated to reflect the new requirements, and arrange training for affected workers.

Elliott Safety can assist with CSS risk assessments, Silica Risk Control Plan development, and worker training. Contact us to discuss your compliance needs.