Worked example — default entered values
APF 20 prompt — for example FFP3 or a half-mask with P3 filter
- Confirm extraction flow rate for the tool.
- Use an antistatic wood-dust hose and tight connections.
- Tight-fitting RPE requires face-fit testing and wearer compatibility.
- Control combination indicated by the HSE task guidance; check the COSHH assessment and equipment instructions.
MDF · sanding · 25 min/day trigger time · enclosed · dry · specialist hazard: none
“H or M” is retained because HSE accepts either class for the cited construction wood task.
The tool can accept effective on-tool extraction.
Duration is actual trigger time summed across the day.
APF 20 is a protection-factor requirement, not a product model.
Extraction class alone does not establish control. Confirm airflow and capture; resolve fit testing and wearer limitations. Asbestos, lead/toxic coatings, biological contamination, combustible/ATEX dust, nanomaterials and unknowns suppress this generic prompt.
CONTROL PROMPT. This screening prompt does not replace the control hierarchy or COSHH assessment. Source control is primary; class, airflow and capture effectiveness must be evidenced. Tight-fitting RPE requires face-fit testing and wearer compatibility.
Source register · registry version 1.0.0
HSE, Construction dust: Cutting and sanding wood — accessed 2026-07-24
HSE, Hazardous substances: Woodworking — accessed 2026-07-24
HSE, Construction silica: COSHH Essentials — accessed 2026-07-24
HSE · updated 19 September 2025, Asbestos essentials — accessed 2026-07-24
Formula researched 2026-07-24