Overview

Assessment of local exhaust ventilation (LEV) systems, spray booth extraction, laboratory fume cupboards, and general ventilation adequacy. Includes face velocity measurements and system performance verification to ensure adequate capture and removal of airborne contaminants.

Methodology

  • Face velocity measurements at LEV hoods, spray booths, and fume cupboards using a calibrated anemometer
  • Duct velocity measurements where accessible
  • Air change rate calculations for enclosed spaces
  • Visual assessment of ductwork condition, capture efficiency, and filter status

What You Receive

  • Ventilation assessment report with measured face velocities and air change rates
  • Compliance status against design specifications and regulatory requirements
  • Recommendations for system maintenance, modifications, or upgrades
Applicable Legislation:
Environmental Regulations for Workplaces, 1987; HCS Regulations, 1995; OHS Act 85 of 1993 Section 8.

Frequently Asked Questions

What face velocity is required for a fume cupboard?
A laboratory fume cupboard typically requires a minimum face velocity of 0.5 m/s at the sash opening. Spray booths and LEV hoods have different requirements depending on the contaminant and process.