LEV & CoSHH Regulations

What Is CoSHH?

It is the legislation for the 'Control of Substances Hazardous to Health'. Under CoSHH legislation, every employer who has a control measure, i.e local exhaust ventilation systems or equipment (LEV) should ensure it is maintained to a good working order by means of a thorough examination and performance test carried out a minimum of once in a 14 month period. Certain applications may require more frequent checks.

Further information from the HSE can be found here.

What is LEV?

LEV or 'Local Exhaust Ventilation' is a means by which airborne substances are controlled and removed in order to prevent exposure to people in the workplace.

An LEV system usually consists of a fan, an air cleaner, ducting and a hood. The hazardous substance is captured from the source and carried away in a ducted air stream generated by the fan and filtered by one of several methods dependent on the substance.

Nederman engineers can conduct thorough examinations and tests on many manufacturers equipment covering systems such as:

  • Pulse or reverse jet fabric duct filters
  • Cassette and cartridge dust or fume filters
  • Fabric shaker filters
  • Wet collectors
  • Cyclones and multi-cyclones
  • Fume cupboards
  • Down-draft benches
  • Paint spray booths
  • Welding fume extractors
  • Vehicle exhaust fume extractors

How often does LEV equipment need to be tested?

A minimum of once in every 14 month period, in certain circumstances this period may be more frequent e.g. metallic dust

What is a TExT (Thorough Examination and Test)?

It is a check that your LEV is still working effectively as originally intended and is helping to protect your employee's health. To be able to tell if it is still working as per intended or designed performance of your system e.g. hood type and position to the process, airflow and other measurements.

Further information from the HSE can be found here.