What is LEV Testing?

LEV testing or Local Exhaust Ventilation testing, is the in-depth inspection and examination of an LEV System, which icludes hoods, ducts, fans, filters and exhaust. This is evaluated against the commissioning reports performance, industry standards and HSE guidelines. The test includes airflow and pressure measurements and looks at the systems effectiveness to control exposure to contamination.

What is HSG258?

HSE published HSG258 ‘Controlling airborne contaminants at work’ guidance third edition for LEV in 2017. It provides guidance on the design, commissioning and testing of LEV systems in order to remain compliant with COSHH regulation 9 which states that measures must be taken to provide effective control through the use of LEV (dust and or fume extraction) equipment and that this must be maintained in effective working order in good repair..

What is an LEV System?

Any business that requires the removal of dust, smoke, mist and other  air polluting particulates from the workplace to create a healthy working environment requires an extraction or Local Exhaust Ventilation (LEV) System. An LEV system includes ducting, hoods, filters, fans and a discharge system.

How often should an LEV System be tested?

HSE regulations state an LEV system must be tested every 14 months or sooner to remain compliant.

Who can carry out LEV Testing?

According to HSE guidance, testing must be carried out by a competent and qualified person. Competency is the training, skills, experience and knowledge that a person has and the ability to perform a task safely. A qualified LEV Engineer should have  the relevant qualifications  (P601) to undertake such work.

Why do LEV Systems need testing?

It’s important to test LEV systems from an HSE compliance standpoint and minialise business interruption, but also to ensure that air pollutants are being extracted effectively to create a safe working environment for employees. By testing  and maintaining extraction systems regulary you will increase the efficiency and lifespan of the installed extraction system and reduce long term maintenance costs.