LEV Commissioning
HOW WE CAN HELP WITH LEV COMMISSIONING
What is LEV Commissioning
Commissioning is a legal requirement for all new or modified Local Exhaust Ventilation (LEV) systems. It offers an initial assessment as to whether the equipment performs as intended in the design. More importantly, it proves that an LEV system is capable of providing adequate control and is an essential first step towards keeping your workforce safe.
Why is an LEV Commissioning Report Important?
At its core, the LEV commissioning report is evidence that the system is working correctly and can provide adequate protection against airborne dust, fumes, and any dangerous particles.
The performance readings in the report act as a benchmark for your regular thorough examination & testing(TExT) going forward. Any considerable deviations from the performance data recorded in the commissioning report will indicate that there are potential issues that need to be investigated and addressed in order to keep your workforce safe and fulfil your legal obligations.
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What is Involved in the LEV Commissioning Process?
01
Installation
The first step for commissioning is LEV installation. This must be carried out to the exact specifications of the LEV design by someone / a team that is experienced and competent in doing so.
02
Demonstrating Technical Performance
The LEV system will be tested to make sure that it performs to the design specifications.
Several LEV testing methods make up the technical performance assessment. This includes:
- Measuring airflow and volume flow rates
- Recording pressures throughout the system
- Checking duct and capture velocities
- Documenting fan and motor performance
These readings establish whether the system is operating for its intended purpose.
03
Control Effectiveness
Meeting design specifications alone is not enough.
This stage evaluates whether the system is actually controlling the hazardous substances generated during your processes. This may involve airflow visualisation or assessing how effectively contaminants are captured at source.
04
LEV Commissioning Report
All the information from the commissioning process is then documented for future use, and the system can be deemed either satisfactory or non-satisfactory based on the findings from this report.
The LEV commissioning report will contain an overview of your system, including the location, process description, hazardous substance being controlled, readings taken during commissioning, photographs, schematics, and further details on your system.
WHAT CAN HAPPEN DURING LEV COMMISSIONING
Common Issues Identified During LEV Commissioning
Commissioning often highlights issues that are not obvious during installation.
These can include:
- Poorly positioned extraction hoods
- Airflow imbalance across the system
- Leaks within ductwork
- Inadequate fan performance
- Systems that do not reflect the original design intent
Addressing these early ensures the system performs effectively and reduces long-term risk.
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Why Choose Vent-Tech For LEV Commissioning
We approach commissioning from a performance and compliance perspective, not just a checklist.
Whether your system has been installed by another provider or us, we assess how it performs under real conditions and provide clear, defensible reporting aligned with HSE expectations.
All commissioning work is carried out by competent, BOHS-qualified engineers, ensuring accuracy, consistency, and reliable results.
We also deliver LEV training, which means we understand not just how to test systems, but how they are used and maintained in practice.
As leaders in the industry, we are trusted by various industries for all things LEV across the UK.
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FREQUENTLY ASKED QUESTIONS
Is LEV commissioning a legal requirement?
Yes. Under COSHH Regulations, any new or significantly modified LEV system must be commissioned to demonstrate that it provides adequate control of hazardous substances.
When should LEV commissioning be carried out?
LEV commissioning should be completed immediately after installation or after any major modification to the system. It ensures the system is performing as intended before it is relied upon for day-to-day use.
What is the difference between LEV commissioning and LEV testing?
Commissioning is carried out at the start of a system’s life to prove it works as intended. LEV testing, also known as thorough examination and testing, is carried out periodically, typically every 14 months, to confirm the system continues to perform effectively.
How long does LEV commissioning take?
The time required depends on the size and complexity of the system. Smaller systems may take a few hours, while larger or more complex installations can take a full day or longer.
Who can carry out LEV commissioning?
LEV commissioning should be carried out by a competent engineer with the appropriate knowledge and qualifications. This ensures the system is assessed accurately and in line with HSE expectations.
Speak To Our Team For LEV Commissioning
If your LEV system has been installed but not properly commissioned, or if you are unsure whether it is performing as intended, we can help.
Get in touch with our team to arrange a commissioning assessment and ensure your system is controlling exposure effectively.
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