LEV testing and verification of control
Some organisations want reassurance because they’ve installed a system, or are considering it, and want confirmation that it’s appropriate for the task. Others are responding to a trigger like a WorkSafe inspection or H&S audit, or an incident that has put their system under scrutiny.
Our approach to both situations is to assess performance in context. We don’t just look at airflow readings, we inspect hoods, ducting and capture points, observing how the system is used during daily use. In some cases, we incorporate exposure monitoring to better understand how effectively the LEV system is reducing risk.
We don’t install systems, so we’re an independent third-party. Following the LEV test, we’ll provide you with a verification report that clearly states whether the system is satisfactory or not, recommendations on how to address or improve your setup, and companies that can help you execute the recommendations.
Frequently asked questions
What contaminants can be tested?
Localised exhaust ventilation can be used for a wide range of contaminants, including welding fumes, wood dust, vapours and laboratory emissions. If it’s a ducted ventilation system, chances are, we can test it.
How often should LEV systems be tested?
While there is no legal obligation to carry out LEV testing, we highly recommend having a regular assessment every 12-14 months. Many organisations include LEV verification within their broader occupational hygiene programme, particularly where exposure risks are ongoing.
Do you install LEV systems?
No. We provide independent testing and examination. That separation helps ensure the assessment is objective.
What is LEV commissioning?
We commission LEV systems shortly after install or modification to establish a baseline of their performance. That benchmark gives you something concrete to compare against over time, as your equipment ages or your processes change.
What happens if our system doesn’t meet expectations?
When you receive our report it will outline the findings and offer recommendations on how to improve your system. That could involve anything from minor positioning adjustments to a wider review of how contaminants are being controlled. Either way, we’re here to help you understand the next steps.
Localised Exhaust Ventilation (LEV) Testing
Local exhaust ventilation (LEV) systems capture contaminants before they spread into the wider workspace and start impacting health. But whether you’ve already got a system in place or are considering investing in one, the question remains - how do you know your LEV is fit-for-purpose and doing what it’s meant to?
In New Zealand, there’s no specific regulation that requires routine LEV testing, which means your system might be working at a lower capacity without you realising. And while there isn’t LEV-specific legislation, what does exist is a duty under the Health and Safety at Work Act to provide a safe working environment. If extraction is your main engineering control, knowing that it’s working effectively is key to being able to demonstrate that you’re managing risks.
At Air Matters, our qualified occupational hygienists carry out independent LEV testing and verification of control, as well as consulting on options for new ventilation systems. We offer you the confidence of understanding how your system is performing, and the reporting to demonstrate it.
