Powder drifting from process areas to walkways, packaging, or offices causes exposure, rejects, and clean-down time. The solution is zoning with airflow discipline and simple physical controls.

Define zones and pressure

Classify areas as process, transition, and clean. Aim for a pressure cascade that keeps the process area slightly negative to adjacent spaces so air flows inward, not out. Keep doors normally closed and minimise openings.

Separate the space

Use physical partitions to contain sources and guide traffic. Temporary systems such as Dustbarriers help create fast, clean boundaries during outages or layout changes. Add self-closing doorways and clear routes for waste handling to prevent tracking.

Control the air

Deploy air scrubbers or negative air units to pull from process to discharge, verifying airflow under load and selecting filtration appropriate to the hazard (H14 for respirable carcinogens). Position units to avoid short-circuiting and consider ducting to exhaust where recirculation is not acceptable.

Clean and move smart

Operate vacuum-only housekeeping with dedicated equipment per zone. Use tack mats and gowning protocols in transitions. Decontaminate tools before they cross boundaries and schedule clean-down from clean to dirty areas last to avoid recontamination.

Practical takeaways

• Set a pressure cascade that draws air into, not out of, process areas.
• Install partitions and door discipline to block dust paths.
• Place air scrubbers to avoid short-circuiting; check under-load flow.
• Use dedicated vacuums and routes to stop dust transfer.

With clear zones and controlled airflow, floors stay cleaner, exposure drops, and production quality improves without constant reactive cleaning.