What is a fume extraction system?
A fume extraction system, also known as local exhaust ventilation (LEV), is designed to remove hazardous fumes, vapours, dust, and airborne contaminants from the workplace environment. By capturing these pollutants at their source, such systems prevent their dispersion into the ambient air, thereby safeguarding employee health and ensuring compliance with safety regulations.
Legal Requirements for Fume Extraction in the UK
In the UK, employers are legally obligated to control exposure to hazardous substances under the Control of Substances Hazardous to Health (COSHH) Regulations. Regulation 9 specifically mandates that employers implement effective control measures, such as LEV systems, to manage airborne contaminants like dust and fumes. Additionally, these systems must undergo thorough examination and testing at least once every 14 months to ensure they remain in optimal working condition.
How Does a Fume Extraction System Work?
A typical fume extraction system operates by utilizing a fan to create a negative pressure zone that draws contaminated air away from the source. The process involves several key components:
- Hood or Capture Device: Positioned near the contamination source, it captures hazardous substances as they are generated.
- Ducting: Transports the contaminated air from the hood to the filtration unit.
- Air Cleaner or Filter Unit: Removes hazardous particles and gases from the air.
- Fan: Drives the movement of air through the system.
- Discharge: Expels the cleaned air back into the environment or recirculates it, depending on the system design.
By effectively capturing and filtering out harmful substances, fume extraction systems maintain a safer and healthier workplace environment.
Mobile Fume Extraction Systems
For workplaces requiring flexibility, mobile fume extraction systems offer a versatile solution. These portable units can be easily relocated to different areas, providing on-the-spot extraction capabilities. They are particularly beneficial in environments where fixed installations are impractical or when tasks are performed at varying locations within a facility. Mobile systems typically function similarly to stationary ones, incorporating fans and filtration units to ensure effective contaminant removal.
Implementing appropriate fume extraction systems is not only a legal requirement but also a critical component of maintaining a safe and healthy workplace. Regular maintenance and compliance with COSHH regulations ensure that these systems operate effectively, protecting employees from potential health hazards associated with airborne contaminants.
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