Local Exhaust Ventilation

Local Exhaust Ventilation (LEV) is designed to capture harmful dust, fumes, vapours, or mist right at the source, before they reach your lungs.

Why does it matter? Because airborne hazards aren’t always visible, but over time they can cause serious respiratory illness. That’s why the HSE (HSG258) requires employers to install LEV wherever exposure risks or Workplace Exposure Limits (WELs) are breached.

LEV isn’t just a legal box to tick. It keeps people safe, protects your business from fines, and creates a cleaner, healthier workspace. From woodworking and welding to labs and manufacturing, regular maintenance tests keep your system working exactly as it should.

• Required under HSE (HSG258)
• 14-month inspection cycle (HSE-mandated)
• Protects against respiratory illness

Visual review of system condition and setup.

• Survey of LEV components (hoods, ducting, filters, fans)

• LEV design review to confirm compliance with HSG258

• Check user records and previous TExT reports

Measurement of capture velocity using calibrated instruments.

• Quantitative performance assessment (velocity, static pressure readings)

• Airflow measurement vs. HSG258 benchmarks

• Confirm capture efficiency across all hoods

Ensure hood is correctly placed to capture contaminants.

• Qualitative performance assessment using dust lamps/smoke

• Observe user working practices to confirm proper use

• Evaluate airflow patterns and hood placement effectiveness

Inspect for blockages, damage, and system balance.

• Filter condition review and replacement needs

• Duct inspection for leaks or blockages

• Assessment of control level provided vs. required exposure limits

Receive a detailed report and LEV test label valid for 14 months.

• HSG258-compliant commissioning report provided

• Remedial actions and best-practice recommendations included

• Cost-effective improvements suggested for ongoing compliance.