Explosive atmospheres demand cleaning methods that remove combustible dust without adding ignition sources. In the UK, DSEAR aligns with ATEX zone concepts: dust zones 20 (continuous), 21 (likely), and 22 (occasional). The aim is simple—control the fuel, remove dispersion, and eliminate ignition.

Map your zones and risks

Identify materials, particle size, and deposit depth. Mark fixed plant (zone 20), frequent spill areas (21), and wider spaces where dust may settle (22). Note potential ignition sources: static, hot surfaces, friction, and sparks. Plan the cleaning route to move from least to most contaminated.

Select compliant equipment and accessories

Use ATEX‑rated extraction with conductive tools, antistatic hoses, and verified earth continuity. Keep filters and seals in good order to prevent bypass. Supra ATEX vacuums are designed for hazardous dust collection when used within their rated zones and accessories.

Control the task, not just the machine

• Bond and earth before starting; verify continuity with a quick check.
• Avoid dry brushing or compressed air that can disperse dust clouds.
• Use methodical, slow passes; do not overload the filter in one sweep.
• Bag and seal waste immediately; label per COSHH and site rules.
• Schedule cleans before hot‑work or maintenance to reduce ignition risk.

Maintain, inspect, document

Set inspection intervals for hoses, wheels, and brushes where friction could spark. Replace worn seals promptly. Record zone, method, and waste transfer for audit. Where doubt exists, downgrade the method or upgrade the control—never compromise in zones 20 or 21.

Clear zoning, suitable equipment, and disciplined technique keep cleaning efficient while maintaining compliance under DSEAR and ATEX principles.