Local Exhaust Ventilation (LEV) Testing

HSE defines LEV Testing as a thorough and systematic examination to make sure that the LEV can continue to perform as intended by design and will contribute to the adequate control of exposure. We follow a detailed procedure when performing LEV Tests and we will:

• Check your filters to see what condition they are in.
• Measure the rotational speed of the motor with a tachometer (if required)
• Take velocity pressure and static pressure of all test points on the system and face velocities at open hoods.
• Record the pressure drops across the filters.
• Measure ambient dust level.
• Measure contaminant in the returned air to the workshop.
• Measure the decibel readings between 2-3 meters of each machine.
• Measure the dust level reading in the breathing zone of employees (dependent on the process)
• Carry out a smoke test (dependent on the process)
• Complete a face velocity test.
• Provide you with an LEV report that complies with the legal requirements from both COSHH and HSE.

Following your LEV test, we can assist in the design, alteration and improvement of all LEV systems if needed. Any required or possible improvements will be listed in order of priority, under Report Findings & Prioritised Action Plan.