What is LEV?

LEV is a system that:

  • Extracts air to prevent or reduce the level of airborne hazardous substance being breathed in by people in the workplace.
  • Draws pollutants such as welding fume, fine dust, wood dust etc., away from a process or operation that is likely to release a hazardous substance into the workroom air.
  • Consists of an inlet such as a hood or capture device which is close to the release point of the substance to be controlled.  This hood system or the designed capture system is connected via ducting to the inlet of a fan or air mover.
  • The extracted air is then discharged to the atmosphere or returned to the workplace, having first been cleaned and filtered by design.

LEV Testing (Compliance LEV)

Every employer who provides Local Exhaust Extraction equipment to control substances hazardous to health (or COSHH), such as fine dust, wood dust, fume etc., has a legal requirement to examine and test the equipment in order to comply with Regulation 9 of the COSHH Regulations.

The employer must ensure that LEV equipment is maintained in an efficient state, in efficient working order and in good repair.

A thorough examination should be carried out under the HSG 258 Guidance.

Each Employer must keep a suitable record of the examination for a period of at least 5 years. This record should also include details of repairs carried out as a result of the examination and test.