Dust Extraction System SWMS
The dust extraction system is the single most important engineering control in any timber processing facility. Local exhaust ventilation must capture wood dust at every machine before it enters the worker's breathing zone, maintain it below the incoming 0.5 mg/m3 WEL, and discharge it safely without creating secondary explosion or environmental hazards. Dust extraction systems in timber facilities accumulate fine combustible dust that presents a genuine explosion risk when confined in ductwork, baghouses, and silos. The WHS Regulation 2025 requires LEV systems to be tested by a competent person at intervals not exceeding 14 months. This template covers operation, maintenance, and testing of timber dust extraction systems.
Legal Requirements
WHS Regulation 2025 Part 7.1 — Hazardous Chemicals; Part 4.4 — Dust Explosion Prevention
Work in a confined space (baghouse/silo entry for maintenance)
Managing Risks of Hazardous Chemicals in the Workplace (binding 1 July 2026 under Section 26A)
Yes — Hazardous Chemicals code binding July 2026. Non-compliance is admissible as evidence of breach.
Hazards
| Hazard | Consequence | Likelihood |
|---|---|---|
| Wood dust accumulation exceeding WEL due to LEV failure | Nasal cancer (hardwood, IARC Group 1), respiratory disease | Possible |
| Dust explosion in baghouse, silo, or ductwork | Explosion, structural collapse, fatality | Unlikely |
| Oxygen depletion during baghouse or silo entry | Asphyxiation, loss of consciousness | Possible |
| Engulfment in dust silo during cleaning or maintenance | Suffocation, fatality | Unlikely |
| Fire from hot particle entering extraction system (spark from machine) | Filter fire, system damage, building fire | Possible |
Controls (Hierarchy of Controls)
Recent Prosecutions
Workers exposed to wood dust concentrations three times the exposure standard after dust extraction system was modified without re-testing. LEV had not been tested by competent person in over three years.
2023 — SafeWork NSW Prosecution Database
What Your SWMS Must Include
SWMS templates for this work
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🪚Table Saw SWMS
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Need a compliant Dust Extraction SWMS?
Our WHS consultants develop dust extraction SWMS with LEV testing protocols, explosion prevention controls, and housekeeping programs.
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