Local Exhaust Ventilation

Local exhaust ventilation (LEV) is a method of reducing workers’ exposure to potentially harmful substances  generated by the work process.

The release of the substances is controlled at, or close to the point of release reducing the potential for the substance to be released. A typical local exhaust ventilation system will extract air using a hood, partial enclosure or other opening and transport the contaminated air away from the workplace.

In the UK the Control of Substances Hazardous to Health (COSHH) Regulations, require that thorough examination and testing of local exhaust ventilation plant is carried out at least once every 14 months by a competent person. Euro Environmental employ trained and qualified occupational hygienists who can undertake thorough examination and testing of LEV systems and hold the BOHS Certificate of Operational Competence.


The thorough examination and testing of a local exhaust ventilation (LEV) system in line with HSG 258 will involve three stages:

  1. A thorough visual examination
  2. Measuring technical performance
  3. Assessment of the LEV system’s control effectiveness.

Following the site inspection a test report will be produced which will include measurement test data, schematic diagrams of the LEV systems, an assessment on the control effectiveness of the system and any recommendations for remedial requirements detailed in a prioritised action plan.


Euro Environmental staff will work with you and your organisation to ensure your LEV systems remain in compliance with the HSE law and provide you with advise on appropriate control strategies. To compliment this service and validate your current risk assessments we can provide workplace exposure testing of your activities to ensure your LEV systems are effective.


If you need any further assistance or would like to know more please get in touch and we will get back to you as soon as we can.

Area of interest

Head Office
Atlas 6, Balby Carr Bank,
Doncaster, South Yorkshire, DN4 5JT

Midlands Office
Regus Building, Central Boulevard,
Blyth Valley Park, Solihull,
West Midlands, B90 8AG

London Office
Business & Technology Centre,
Bessemer Drive, Hertfordshire,
Stevenage, SG1 2DX

Copyright Euro Environmental 2019