Non-routine tasks such as snagging, client variations, emergency drilling or short shutdown works can spike dust levels far beyond normal controls. These jobs are often rushed, poorly signposted and undertaken in occupied areas. A short, structured approach keeps exposure low and productivity high.

Plan for the spike

Before starting, run a quick dynamic risk assessment: what material is being cut or drilled, who is nearby, and how will dust travel? Assume higher risk for concrete, brick, tile, engineered wood and MDF. Brief the team on stop-work triggers, waste routes and clean-down. If silica is possible, remember the HSE WEL for RCS is 0.1 mg/m³; plan controls accordingly.

Apply the three-layer framework

1) Capture at source

• Use tool-mounted extraction with M/H-Class industrial vacuums; check airflow under load, not free-air figures.
• Adopt water suppression for cutting where safe, and slow the cut speed to reduce emission.
• Redesign the task if you can: pre-cut outside, prefabricate, or use fixings that avoid drilling.

2) Capture in the air

• Create a small negative-pressure zone where practical and run an air scrubber pulling air away from adjacent areas.
• Position intake close to the task and exhaust towards the containment; avoid short-circuiting airflow.
• Portable MAXVAC Dustblockers can provide temporary airborne control when working in tight rooms or corridors.
• Use a particulate monitor to verify a rapid drop in PM2.5/PM10 during and after the task.

3) Capture on surfaces

• Never sweep or use compressed air. Vacuum with high-efficiency filtration and sealed bags.
• Double-bag waste and remove it along a defined route to prevent re-contamination.

Temporary zoning and sequencing

Set up simple barriers, close doors, and post signs. Sequence dusty work when fewer people are present. Keep a go/no-go checklist: extraction connected and tested, containment closed, RPE available, and clean-down kit on hand.

PPE as a backstop

Where residual risk remains, issue FFP3 or suitable tight-fitting RPE and ensure users are fit-tested. PPE does not protect bystanders, so prioritise engineering controls first.

Practical takeaways

• Pause for a two-minute dynamic assessment and brief the team.
• Connect tool extraction, verify airflow under load, and add water suppression where safe.
• Use an air scrubber to create direction of airflow and confirm with a PM meter.
• Vacuum-only clean-up; double-bag and remove waste immediately.
• Define stop-work triggers if dust escapes the zone or visibility drops.

Non-routine does not have to mean uncontrolled. With simple, repeatable steps and lightweight equipment, you can keep spikes short, contained and compliant.