An effective LEV system should be well designed and constructed, properly used and maintained in good condition
This along with regular LEV inspections and servicing will ensure that the system is safe for the pollutants being controlled and is in compliance with HSE regulations.
Systems are classed as Local Exhaust Ventilation (LEV) if they are used to control, capture or contain airborne contaminants such as dust or fumes. These may be controlled “at” or close to the point of emission and then conveyed through the system to a point where they can be safely collected in filters or released to atmosphere.
The following are just some examples of the many kinds of LEV systems:
We work to guidance published in HSG258 “Controlling airborne contaminants at work” which is an up to date HSE guide to local exhaust ventilation. This publication states that tests must be carried out at least once every 14 months on Local Exhaust Ventilation Systems or even more regularly for some substances and processes.