Each year, many UK employees develop lung diseases from
inhaling dust, fumes, or harmful substances at work, with occupational asthma
being the most reported condition. This risk makes it crucial for workplaces to
maintain good air quality.
Local Exhaust Ventilation (LEV) systems efficiently manage
and control airborne contaminants at their source to protect workers.
This blog explores what comprises an LEV system and how it benefits a workplace. It also explains where LEV is
essential, system limitations, and ways to ensure effectiveness.
What is Local Exhaust Ventilation (LEV)?
Local Exhaust Ventilation, abbreviated as LEV, is a system
that captures and removes contaminants at or near the source before they can
disperse into the air. Systems consist of a network of ducts, hoods, fans, and
air-cleaning devices that eliminate harmful substances to protect workers and ensure a
safe working environment.
Why is LEV Important?
Various industrial processes release fumes, dust and vapours
that can pose serious health risks if inhaled. An LEV system controls and
minimises this exposure to airborne contaminants in the workplace by capturing
them right at the source. This process protects workers and preserves air
quality.
What are the Benefits of the LEV System?
Health Protection: LEV removes contaminants at their
origin, preventing respiratory issues, skin disorders and other health problems
associated with exposure.
Compliance with Regulations: LEV systems are mandatory
in workplaces where contaminants are present. Employers must implement LEV to
avoid penalties and legal consequences.
Enhanced Productivity: Workers who feel safe experience
greater job satisfaction. This boost in morale can increase productivity and
reduce absenteeism.
Cost Savings: LEV helps reduce healthcare expenses,
enhance employee productivity and prevent potential penalties and fines. These
long-term savings can significantly outweigh installation and maintenance
costs.
What are the Limitations of an LEV System?
While LEV systems are highly effective, they do have
limitations:
Design and Maintenance: The efficiency of an LEV system
depends on its design and regular maintenance. Poorly designed or maintained
systems can reduce effectiveness and compromise worker safety.
Limited Coverage: LEV systems are only effective in the
specific area they are installed. Systems for larger spaces or mobile
workstations require additional measures.
Worker Behaviour: LEV efficiency may be compromised if
employees do not use the equipment as intended. Improper use may also damage
systems or cause faster deterioration.
What Kind of Workplaces Require an LEV System?
Several workplaces need LEV systems, including:
1. Welding
Shops: To protect against harmful welding fumes
2. Woodworking
Facilities: To protect against wood dust and other airborne particles
3. Chemical
Laboratories: To prevent exposure to hazardous vapours
4. Metalworking
Shops: To capture metal dust and fumes generated by metalwork
5. Pharmaceutical
Manufacturing: To control exposure to powders and chemicals.
How do You Effectively Manage an LEV System?
Ensuring effective management of an LEV system requires
careful consideration of several factors:
Risk Assessment: Regular risk assessments are essential
for recognising potential hazards and maintaining a secure environment. A risk
assessment course explains the fundamental steps, including hazard
identification and risk evaluation. While the course equips participants with a
broad understanding, specialist knowledge is imperative for managing risks
associated with hazardous substances.
Proper Design: Work with experienced ventilation
engineers to design a system tailored to the workplace’s specific needs and
hazards. Consider factors such as airflow rates, hood design and ductwork
configuration.
Regular Maintenance: Schedule routine inspections and
maintenance to ensure that the system functions optimally.
Air Quality Monitoring: Monitor air quality to ensure
the LEV system effectively captures and removes contaminants. This process may
involve periodic testing and system adjustments to maintain optimal
performance.
Employee Training: Provide LEV Training Courses to employees responsible for operating LEV systems.
This gives workers the knowledge to use and maintain an LEV system safely,
which helps ensure its effectiveness and long-term operation.
Compliance with Regulations: Keep up and comply with
relevant occupational health and safety regulations.
Conclusion
LEV systems play a crucial role in safeguarding the health
and well-being of workers in various industries. These systems contribute to a
safer and more productive work environment by effectively capturing and
removing airborne contaminants at their source.
Employers must recognise the importance of investing in LEV
systems, not only for the well-being of their workforce but also for regulatory
compliance and long-term cost savings.
