Respirable Crystalline Silica (RCS) / Silica Dust Monitoring

Protect your workforce from silicosis, lung cancer and other serious lung diseases with professional Respirable Crystalline Silica (RCS) / Silica Dust Monitoring from Synergy Environmental Solutions. Our Occupational Hygiene Consultants carry out personal air sampling, detailed exposure assessment and clear reporting to help you stay COSHH compliant and reduce risk across your site.

Angle grinder producing Respirable Crystalline Silica (RCS) / Silica Dust

What Is Respirable Crystalline Silica (RCS)?

Respirable Crystalline Silica is the fine, airborne fraction of crystalline silica dust created when materials like concrete, mortar, stone, tiles and bricks are cut, drilled, ground or crushed. These tiny particles are small enough for workers to inhale them deep into the lungs. The particles are so small that you cannot see them under normal lighting.

RCS is found in many high-risk activities, including:

  • Cutting, chasing or drilling concrete, stone and brick
  • Raking, grinding or polishing concrete floors
  • Sawing tiles and manufactured stone worktops
  • Quarrying, tunnelling and demolition work
  • Sandblasting and abrasive blasting

Over time, prolonged exposure to silica dust can cause silicosis, lung cancer, COPD and other occupational lung diseases.

Our Silica Dust Monitoring Service

Respirable Crystalline Silica FAQ

Q1: What is respirable crystalline silica (RCS)?

RCS is the fine fraction of silica dust created when materials like concrete, stone and brick are cut, drilled or ground. The particles are small enough to be inhaled deep into the lungs and can cause silicosis, lung cancer and other serious lung disease.

Q2: What is the UK Workplace Exposure Limit for silica dust?

The Workplace Exposure Limit (WEL) for respirable crystalline silica is 0.1 mg/m³, averaged over an 8-hour working day (8-hour TWA). Employers must reduce exposure below this and as low as reasonably practicable.

Q3: Who should have silica dust monitoring carried out?

Any organisation whose workers cut, grind, drill or otherwise disturb concrete, masonry, tiles, bricks, stone or silica-containing products — particularly in construction, demolition, stone fabrication, quarrying and precast operations.

Q4: How is silica dust exposure measured?

We use personal air sampling pumps with respirable dust sampling heads worn in the breathing zone. Samples are collected over a period (task or shift), analysed by an accredited lab and compared to the WEL and ALARP guidance.

Q5: How often should RCS monitoring be repeated?

Frequency depends on your risk profile, how close exposures are to the WEL, and whether processes or controls change. Many sites monitor every 1 year or sooner after major changes, new methods or HSE feedback.

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Why Choose Synergy Environmental Solutions?

  • Specialist Occupational Hygiene Consultants with extensive RCS experience
  • COSHH-aligned methods and WEL-based reporting
  • UK-wide service with minimal disruption to your operations
  • Reports in ~15 working days
  • Practical, realistic control recommendations (not just theory)
  • Integrated support for LEV testing, dust monitoring, welding fume, wood dust and more

We don’t just measure exposure — we help you control it.

Book Your Silica Dust Monitoring Survey

Protect your workforce, demonstrate COSHH compliance and reduce the risk of enforcement and claims.

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