Local Exhaust Ventilation (LEV): Workplace Fume and Dust Extraction
Local Exhaust Ventilation (LEV) systems are a critical part of workplace health and safety, designed to remove harmful fumes, dust, and airborne contaminants at source. Proper LEV installation and maintenance protect workers from respiratory illnesses, long-term health risks, and regulatory non-compliance.
Why LEV is Important
LEV systems help control exposure to hazardous substances in workplaces where welding, soldering, chemical handling, woodworking, or other dust- and fume-generating tasks occur. By capturing pollutants at the point of release, LEV reduces inhalation risks and ensures compliance with Control of Substances Hazardous to Health (COSHH) regulations.
Employer Responsibilities
Employers are legally responsible for protecting employees from airborne hazards. Key duties include:
- Carrying out risk assessments for all processes that generate fumes or dust
- Providing LEV systems suitable for the specific workplace tasks
- Ensuring LEV systems are correctly installed, tested, and maintained
- Providing training and information on safe LEV use
- Keeping records of inspections, maintenance, and employee exposure monitoring
Employee Responsibilities
Employees must take reasonable care for their own health and safety and follow LEV usage guidance. Key actions include:
- Using LEV systems correctly and consistently during work tasks
- Reporting any faults, damage, or inadequate extraction to supervisors
- Participating in training on fume and dust control
- Following workplace procedures and personal protective equipment (PPE) guidance
Maintaining an Effective LEV System
To ensure an LEV system is working effectively, workplaces should follow these steps:
- Conduct regular thorough examinations and tests by a competent person at least every 14 months (as recommended by HSE)
- Clean and maintain hoods, ductwork, filters, and fans according to manufacturer guidance
- Keep records of all maintenance, testing, and remedial actions
- Adjust or upgrade systems when processes change or new hazards are introduced
Health Monitoring and Risk Assessment
In workplaces with significant exposure risks, regular health surveillance may be required to detect early signs of respiratory disease. Combined with proper risk assessment, LEV systems help create a safe environment and demonstrate regulatory compliance.
Training and Further Guidance
Specialist health and safety short courses cover the design, operation, and maintenance of LEV systems, fume control, and dust extraction. Employers and employees can benefit from courses on COSHH compliance, workplace ventilation, and air quality monitoring to ensure ongoing safety.
Local Exhaust Ventilation is a fundamental control measure for workplace dust and fume exposure. Correct use, regular maintenance, and appropriate employee training ensure a safer workplace, protect long-term health, and maintain compliance with UK health and safety legislation