UK Workplace Exposure Limits
The Health and Safety Executive (HSE) sets Workplace Exposure Limits (WELs) for hazardous substances in the workplace. These limits are designed to protect workers from the harmful effects of exposure to gases, vapours, and dusts.
Key Regulations
- Control of Substances Hazardous to Health (COSHH) Regulations 2002
- EH40/2005 Workplace Exposure Limits
- Health and Safety at Work etc. Act 1974
- Management of Health and Safety at Work Regulations 1999
Types of Limits
- 8-hour TWA: Time-weighted average over 8 hours
- 15-minute STEL: Short-term exposure limit
- Ceiling Limit: Must not be exceeded at any time
Recent Updates
EH40/2005 Updates
The HSE regularly updates workplace exposure limits. Check the latest version for current limits and new substances added to the list.
© MIRA Business Ltd 2025
© MIRA Business Ltd 2025
Exposure Monitoring
Regular monitoring is essential for ensuring compliance with workplace exposure limits.
Record Monitoring Data
© MIRA Business Ltd 2025
Compliance Requirements
Risk Assessment
Employers must assess risks from hazardous substances and implement appropriate control measures.
- Identify hazardous substances
- Assess exposure risks
- Implement control measures
- Review and update regularly
Control Measures
Hierarchy of controls to minimize exposure:
- Elimination or substitution
- Engineering controls
- Administrative controls
- Personal protective equipment
Health Surveillance
Regular health monitoring may be required for certain substances:
- Pre-employment health screening
- Periodic health assessments
- Record keeping requirements
- Reporting obligations
Training Requirements
Workers must receive adequate training on:
- Hazardous substances present
- Health risks and effects
- Control measures in place
- Use of PPE