Local Exhaust Ventilation Systems

Control of personal exposure in the workplace can be achieved by Local Exhaust Ventilation (LEV) systems.

LEV is a generic term to describe powered extraction systems removing hazardous airborne substances from localised areas generated from operations such as welding, paint spraying or soldering for example. LEV systems are one of the commonest means of limiting and controlling employee exposure to chemicals and hazardous substances thus protecting their health and welfare

As with any engineering control incorporating mechanical components the system is subject to “wear and tear” and needs to be regularly tested to ensure adequate levels of performance are maintained. The legal requirement to regularly test is thus enshrined in the Control of Substances to Health (COSHH) Regulations 2002 (as amended).

Regular testing should meet the requirements of both the COSHH regulations and the recently issued Health and Safety Executives (HSE) guidance document HS(G)258 “Controlling airborne contaminants at work; a guide to LEV”.

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