Capturing Dust and Fumes from the Process
In some industrial processes, dust or fumes are released at a specific speed and in a specific direction. A collection system, also known as a receiving system, makes use of that movement.
The exhaust system is positioned where the contaminated air is moving toward. The system therefore does not need to first draw the dust or smoke toward itself, but captures it in the direction it is already moving. That is precisely why the correct position is important.
Is the extraction system still in the right place?
A production process does not always remain the same. Machines are moved, work processes change, or the speed and direction at which substances are released vary. What does such a change mean for the extraction system?
Normec examines and tests the local exhaust ventilation (LEV) system using a Thorough Examination and Test (TExT). We assess the technical condition and relevant performance of the collection system. This reveals any deviations that require attention.
Periodic TExT of Exhaust Systems
For most LEV systems, regulations require a Thorough Examination and Test at least every 14 months. Shorter intervals may apply for certain applications.
A TExT provides you with:
- Insight into the current condition and performance of the containment system
- Identification of deviations that could affect operation
- Information to help you plan maintenance and improvements effectively
- An independent assessment of your LEV system
- Documentation of the periodic TExT performed
The results are included in a report. This provides you with clear information for any follow-up steps.
Exhaust system tailored to the work process
Normec assesses the collection system within the context in which it is used. The focus is on the system’s function: capturing contaminants at the point where they are generated by the process. This provides you with a well-founded assessment of your installation and identifies where action may be needed.
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Frequently asked questions about the inspection of dust and fume collection systems
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A collection system, also known as a receiving system, is a type of Local Exhaust Ventilation in which dust, smoke, or other contaminants move from the process toward the extraction point, where they are collected.
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In a collection system, the contaminants from the process already have a specific direction and movement. In a capturing system, the exhaust fan creates the airflow that draws the contaminants toward the exhaust point.
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The position must align with the direction in which dust or smoke is emitted. If the extraction system is positioned incorrectly, some of the contaminants may miss the extraction point.
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TExT stands for Thorough Examination and Test. It is a periodic thorough examination and test of a LEV system.
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For most LEV systems, regulations stipulate a maximum interval of 14 months between inspections. Shorter intervals apply to certain applications.
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Yes. If the location, direction, or speed at which contaminants are released changes, this can affect the operation of the collection system.