What Are ATEX Zones? Managing Explosion Risk in Factories Using Solvent

In any solvent-using factory, explosive vapour-air mixtures can form when ventilation is insufficient. ATEX zone classification defines where this risk exists and at what intensity.

ATEX Zone Classifications

• Zone 0: Continuous explosive atmosphere — inside closed solvent tank.
• Zone 1: Occasional explosive atmosphere during normal operation — filling points.
• Zone 2: Explosive atmosphere in abnormal conditions — storage area surroundings.

Where Does a Recovery Machine Fall?

Recovery machine installation is Zone 1 or Zone 2. The machine must be ATEX compliant: non-sparking motor, static earthing, pressure relief.

Equipment That Must Be ATEX Compliant

• Solvent recovery machine
• Storage area lighting
• Ventilation fans
• Electrical panels
• LEL gas detectors

Practical Measures

Mark zone boundaries, use only compliant equipment, calibrate gas detectors regularly, train all personnel on ATEX awareness.