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LEV Testing

Appraisal and Examination

The Testing of Local Exhaust Ventilation Systems

Local Exhaust Ventilation System Testing in Ireland
We are affiliate members of the British Occupational Hygiene Society and all our examiners hold a current BOHS P601 proficiency certificate in Initial Appraisal and Thorough Examination and Testing of Local Exhaust Ventilation Systems.

Our LEV inspections include:
  • 1. Thorough Visual and Structural Examination

    To include mechanical inspection or adjustment of captor arms and filter units, inspection of fan housings and casings and rotation check. Visual inspection of duct systems, fixed hoods and enclosures.

  • 2. Measure of Technical Performance

    To include schematic drawings of LEV systems indicating relevant test points. LEV records will detail face and transport velocities and volumes, static pressure readings in duct systems, across fans and filter units and capture ranges of hoods and captor arms.


    Each LEV point will be subjected to a smoke test and observation of the process will be carried out with a dust lamp and the results recorded on the LEV record.

  • 3. Assess Control Effectiveness

    LEV records will detail overall effectiveness of each system, recommended working practices, any necessary repairs or modification required.


    Each LEV system will be identified by a label detailing LEV number, test and retest dates and examiners initials.


    Each hood, captor arm or other inlet type will have a Pass or Fail label affixed in a prominent position.

To find out more about LEV Testing and how we can help you, please call 00353 (0)45 892 818 or email sales@pmlev.ie.