Silica dust is a serious workplace hazard, but not all activities carry the same level of risk. In NSW, certain tasks are legally classified as “high-risk silica work” under Work Health and Safety (WHS) legislation. Understanding this classification is key to protecting workers and staying compliant.
Defining High-Risk Silica Work
High-risk silica work includes activities where respirable crystalline silica (RCS) exposure is likely to exceed the Workplace Exposure Standard (0.05 mg/m³). Common examples include:
- Cutting, grinding, or drilling concrete, masonry, or stone
- Manufacturing or handling engineered stone products
- Demolition of silica-containing structures
- Abrasive blasting or sandblasting
These activities generate fine dust that can penetrate deep into the lungs, making exposure particularly hazardous.
Requirements for High-Risk Silica Work
When work is classified as high-risk, employers must:
- Conduct a risk assessment and prepare a Safe Work Method Statement (SWMS)
- Implement effective dust control measures, such as wet cutting, ventilation, or HEPA-filtered extraction
- Provide appropriate personal protective equipment (PPE), including respirators
- Arrange air monitoring by a qualified occupational hygienist
- Train workers and maintain records of monitoring and controls
Why Compliance Matters
Failure to properly manage high-risk silica work can lead to:
- Serious health impacts for workers
- Regulatory enforcement, fines, or stop-work orders
- Increased liability and reputational risk
Key Takeaway
High-risk silica work is heavily regulated for a reason. Identifying the tasks that generate respirable silica, controlling exposure, and engaging an occupational hygienist ensures worker safety and compliance under NSW WHS laws.