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Local Exhaust Ventilation (LEV) Test Certificate
A Local Exhaust Ventilation (LEV) Test Certificate records the results of a thorough examination and test of an LEV system used to control exposure to hazardous substances (dust, fumes, vapours). LEV testing is a legal requirement under COSHH Regulations and must be carried out at least every 14 months.
COSHH Regulations 2002, HSE HSG258 (Controlling airborne contaminants at work)Valid: 14 months (COSHH requirement)
What it covers
- LEV system description and process
- Hood/enclosure face velocity measurements
- Duct transport velocity
- Filter condition and pressure drop
- Fan performance
- Exposure assessment and recommendations
Who needs a LEV Test Cert?
Manufacturing businesses
Woodworking shops
Spray booth operators
Welding workshops
Dental laboratories
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Frequently asked questions about LEV Test Cert
How often must LEV systems be tested?
COSHH Regulations require LEV testing at least every 14 months. Some processes require more frequent testing (e.g. lead work, asbestos). Records must be kept for at least 5 years and be available for HSE inspection.
Who can test LEV systems?
LEV testing must be carried out by a competent person with knowledge of the relevant processes, ventilation engineering, and measurement techniques. HSE guidance (HSG258) defines competence requirements. BOHS qualifications (P601/P602) are widely recognised.