Commissioning Your LEV System – What the HSE Says and How A-Mac Delivers

Local Exhaust Ventilation (LEV) systems are essential for protecting workers from hazardous substances in the workplace. Whether you're welding, grinding, or working with chemical fumes, LEV systems capture contaminants at the source—keeping your air clean and your people safe.

The Health and Safety Executive (HSE) has recently updated their guidance on commissioning LEV systems, making it clear that a proper commissioning process is not optional—it’s a legal and practical necessity.

At A-Mac Environmental, we align our commissioning process with the HSE’s expectations to ensure your LEV system is not only compliant but also performing at its best from day one.

🔧 What Does "Commissioning" Mean?

Commissioning is the process of making sure a newly installed LEV system is working as it should—effectively controlling exposure to airborne contaminants. It involves performance testing, adjustments, documentation, and establishing a baseline for future inspections.

🛠️ How A-Mac Commissions Your LEV Equipment

At A-Mac Environmental, our commissioning process is thorough and fully compliant with HSE guidelines. Here’s how we do it:

1. Pre-Commissioning Checks

We start with a detailed inspection to verify:

• The system is installed correctly as per design.

• Ductwork, hoods, filters, and fans are properly connected.

• All safety features are in place and functioning.

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2. Performance Testing

Using specialist equipment, we test:

• Airflow and velocity at extraction points.

• Capture efficiency using visual aids like smoke testing.

• System pressure and fan performance.

• Filter performance and any initial contamination build-up.

3. System Calibration

Where necessary, we adjust:

• Fan speeds or damper settings.

• Hood placement and extraction arms.

• Airflow balance to ensure every workstation is protected.

4. Handover & Client Training

We don’t just hand over a system—we make sure your team knows how to:

• Operate it correctly.

• Spot warning signs like reduced airflow.

• Maintain filters and request re-tests.

5. Commissioning Report

You’ll receive a full report that includes:

• Test results and airflow readings.

• System diagrams and unique ID labels.

• Maintenance and filter change intervals.

• A benchmark for future LEV thorough examinations (required under COSHH Regulation 9).

  
  

📌 Why It Matters

The HSE’s latest guidance is clear—commissioning is essential because:

• It proves the system works from the start.

• It provides a performance baseline for future inspections.

• It ensures legal compliance with COSHH regulations.

• Most importantly, it protects your workforce from harmful airborne substances.

  
  

✅ Ready to Commission Your LEV System?

Whether you’re installing a brand new LEV setup or upgrading your existing equipment, A-Mac Environmental is here to help. Our expert team ensures your system is fully functional, compliant, and documented to HSE standards.

📞 Contact us today to schedule your LEV system commissioning and take a proactive step toward cleaner, safer air in your workplace.