Concrete Cutting Silica Dust SWMS
Diamond blade concrete cutting — wet-cutting methods, on-tool extraction, respiratory protection, air monitoring, and task rotation.
SWMS variants reference your state’s WHS legislation. Instant download after payment.
Concrete cutting generates respirable crystalline silica (RCS) whenever a saw, blade, ring saw or wall saw passes through concrete, which is typically 20 to 40 per cent crystalline silica by mass. The dust released is fine enough to bypass the body's natural defences and lodge deep in the lung, where it causes silicosis, lung cancer and other irreversible disease. Because the cutting action mechanically liberates that dust at high rates, concrete cutting is among the highest-exposure tasks on any construction or civil site, and it is treated as a distinct high-risk activity under the crystalline silica provisions of the model Work Health and Safety Regulations rather than as ordinary dusty work.
The controlling number is the workplace exposure standard for RCS: 0.05 mg/m3 as an eight-hour time-weighted average, which must not be exceeded. From 1 December 2026 this standard is reframed as a workplace exposure limit, and the duty to keep exposure as low as reasonably practicable below it is reinforced. Processing of a crystalline silica substance — which includes cutting concrete — is defined as high risk where it is reasonably likely to result in a risk to health, the practical trigger being airborne RCS above half the exposure standard generated on a regular basis. Where the work is assessed as high risk, the duty holder must prepare a silica risk control plan, conduct air monitoring, and provide health monitoring to exposed workers. This document is written on the basis that uncontrolled dry cutting will exceed the standard within minutes, so water suppression or on-tool extraction is not optional but foundational.
Hazards identified
10 hazards covered, sorted by priority.
Silicosis, lung cancer and chronic obstructive disease from cumulative inhalation
Airborne RCS many multiples above the exposure standard within minutes of starting
Severe laceration, amputation or fragment injury to the operator and bystanders
Electrocution, explosion or flooding where services are not located and isolated
Permanent noise-induced hearing loss without effective hearing protection
Hand-arm vibration syndrome and permanent loss of grip and sensation
Slips and falls, and environmental breach where slurry enters stormwater
Carbon monoxide poisoning where engine-driven saws are used in enclosed spaces
Back, shoulder and crush injury from heavy and awkward loads
Burns and eye injury from the cutting interface and flying debris
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Elimination: design out the cut where reasonably practicable — use cast-in penetrations, pre-formed joints or off-site prefabrication so the silica-generating task is never created on site.
- 2Substitution: where a method choice exists, select the lower-dust technique — for example a wall saw or wire saw with integrated water over free-hand dry cutting.
- 3Engineering: continuous water suppression delivered to the blade at the manufacturer's specified flow, or on-tool dust extraction through an H-class (HEPA) vacuum where water cannot be used, as the primary control that keeps airborne RCS below the exposure standard.
- 4Engineering: locate, prove and isolate all embedded services before cutting using DBYD plans, a service locator and, where required, ground-penetrating scanning.
- 5Engineering: use mains-powered or hydraulic saws in preference to petrol saws, and never operate an internal-combustion saw inside an enclosed or poorly ventilated space.
- 6Administrative: conduct a silica risk assessment for the task, and where it is high risk processing of a crystalline silica substance, prepare a silica risk control plan and arrange air monitoring to validate that controls hold below the exposure standard.
- 7Administrative: provide health monitoring, including respiratory questionnaires and chest imaging as advised by a registered medical practitioner, to any worker carrying out high-risk silica work, and maintain the records.
- 8Administrative: restrict access to the cutting zone, sequence the work to remove other trades from the dust plume, and rotate operators to limit individual exposure and vibration dose.
- 9PPE: properly fit-tested respiratory protection appropriate to the residual exposure — at minimum a P2 half-face respirator, and a powered air-purifying respirator for extended or higher-exposure cutting — selected and maintained in accordance with AS/NZS 1715 and AS/NZS 1716.
- 10PPE: hearing protection matched to the measured noise level, eye protection to AS/NZS 1337.1, cut-resistant gloves, and Class I or Class II safety footwear with protective toecap to AS/NZS 2210.3.
- 11Administrative: all workers must hold a valid White Card (General Construction Induction Training, CPCCWHS1001) before entering any construction workplace.
- 12Administrative: conduct a daily pre-start toolbox talk covering the day's cutting scope, dust controls, services located, required PPE and emergency procedures, and record attendance in the SWMS consultation section.
- 13Administrative: clean up with an H-class vacuum or wet methods — never dry sweep or use compressed air, which re-suspends settled RCS — and manage slurry so it does not enter stormwater.
- 14Administrative: review and update this SWMS whenever the work scope changes, after any incident or near miss, when a worker or health and safety representative raises a concern, when new hazards are identified, or at minimum every 12 months.
Applicable Codes of Practice
The current national code setting out the risk assessment, silica risk control plan, air monitoring and health monitoring duties for processing crystalline silica substances such as concrete.
Controls and the exposure standard for the high noise levels generated by concrete saws.
Selection, fit testing, use and maintenance of the P2 and powered respiratory protection required as a residual control against RCS.
Eye protection against ejected concrete fragments, slurry and sparks during cutting.
Equipment guarding and foot protection requirements for powered cutting operations.
High-Risk Silica Work triggered
Cutting concrete is processing of a crystalline silica substance under the model WHS Regulations. Where it is reasonably likely to generate airborne RCS above half the workplace exposure standard on a regular basis it is high-risk processing, which triggers the duty to prepare a silica risk control plan, conduct air monitoring and provide health monitoring. This crystalline silica regime is distinct from, and additional to, the Schedule 1 high risk construction work categories.
Concrete cutting that is high-risk processing of a crystalline silica substance carries duties to prepare and follow a silica risk control plan, to conduct air monitoring where there is uncertainty that the exposure standard is met or where required by the regulator, and to provide health monitoring to exposed workers, with records retained for the periods set in the Regulations. Where the cutting forms part of broader construction work it may also fall within a Schedule 1 high risk construction work category, requiring a SWMS prepared before the work commences and kept readily accessible. Failure to control RCS exposure is a breach of the primary duty of care under the model WHS Act and is actively enforced; offence categories run from failure-to-comply through to reckless conduct. Body-corporate maxima are substantial and indexed; the current maximum follows the prevailing schedule of the responsible regulator.
Who this is for
- →Concrete cutting and core-drilling contractors operating road saws, wall saws, ring saws and hand saws.
- →Civil and construction crews cutting slabs, footings, pavements and structural concrete on site.
- →Demolition and remediation contractors making controlled cuts in concrete structures.
- →Plumbers, electricians and service trades cutting chases and penetrations in concrete.
- →PCBU safety managers and site supervisors authorising silica-generating cutting work and overseeing the silica risk control plan.
What you receive
- ✓Editable Microsoft Word document (.docx) fully compatible with Microsoft Word 2016 and newer, Google Docs, and LibreOffice Writer.
- ✓Title page with editable fields for PCBU name, ABN, site address, project name, principal contractor details, and document revision date.
- ✓Hazard register with the concrete-cutting silica hazards — each with a documented consequence, inherent risk rating on a 5x5 likelihood-consequence matrix, hierarchy-of-control measures, and residual risk rating.
- ✓Silica risk control plan prompts aligned to the model crystalline silica Code of Practice, with an air-monitoring trigger and record field referencing the 0.05 mg/m3 exposure standard.
- ✓Dust-control verification prompts for water suppression flow and on-tool H-class extraction, and a respiratory protection selection and fit-test record per AS/NZS 1715.
- ✓Health monitoring prompt and register for workers carrying out high-risk silica work.
- ✓Worker consultation record per the model WHS Act consultation duty and a worker sign-on register (blank, expandable).
- ✓Applicable legislation and Codes of Practice schedule pre-populated for the model WHS jurisdiction with a state-variance reference table covering the harmonised states, plus Victoria.
- ✓Emergency procedure template and a revision log.
Worked example
A cutting contractor is engaged to saw a series of expansion-joint cuts and several service penetrations through a 250 mm suspended concrete slab in a multi-level car park. Before work begins the supervisor confirms the task is processing of a crystalline silica substance and, given the volume of cutting across the shift, assesses it as high risk, so a silica risk control plan is prepared and air monitoring is arranged for the first day to validate the controls. Embedded conduits are located from the as-built drawings and a service scanner, marked, and the cut lines adjusted to clear them. The crew uses a mains-powered floor saw with continuous water suppression to the blade for the long joint cuts, and a ring saw with on-tool extraction through an H-class vacuum for the penetrations where water run-off would be difficult to control. Each operator wears a fit-tested P2 respirator, upgrading to a powered air-purifying respirator for the sustained joint cutting, along with hearing and eye protection. Access to the cutting bay is restricted and other trades are sequenced out of the area. Slurry is contained and prevented from entering the stormwater drains, and at the end of the shift the area is cleaned with the H-class vacuum rather than swept. Personal monitoring returns a result below the exposure standard, the result is recorded, and exposed workers are enrolled in health monitoring.
Related legislation
- Model Work Health and Safety Act — primary duty of care; the duty to consult workers; the reckless-conduct offence; and notifiable-incident provisions, as enacted in each jurisdiction.
- Model Work Health and Safety Regulations — the crystalline silica provisions governing processing of a crystalline silica substance, the high-risk processing definition, the silica risk control plan, air monitoring and health monitoring, as enacted in each jurisdiction.
- Workplace exposure standard for respirable crystalline silica: 0.05 mg/m3 (eight-hour time-weighted average), which must not be exceeded; reframed as a workplace exposure limit from 1 December 2026.
- From 1 September 2024, stronger regulation of work with all materials containing at least 1 per cent crystalline silica across all industries.
- Victoria operates under the Occupational Health and Safety Act 2004 and the Occupational Health and Safety Regulations 2017, with the silica provisions and Compliance Codes applying in place of the model instruments.
Frequently asked questions
Is wet cutting enough on its own to comply?
Water suppression is the foundational engineering control and dramatically reduces airborne respirable crystalline silica, but it is not automatically sufficient on its own. The test is whether worker exposure is kept below the workplace exposure standard of 0.05 mg/m3 over eight hours. Where cutting is sustained or carried out in a confined area, residual respiratory protection and, where the work is high risk, air monitoring are needed to demonstrate the standard is met.
When does concrete cutting become high-risk processing of a crystalline silica substance?
Processing of a crystalline silica substance is high risk where it is reasonably likely to result in a risk to health. The practical indicator is whether the work generates airborne respirable crystalline silica above half the exposure standard on a regular basis. Frequent or high-volume concrete cutting will usually meet that threshold, which triggers the duty to prepare a silica risk control plan, conduct air monitoring and provide health monitoring.
What respiratory protection should concrete cutters wear?
At minimum a fit-tested P2 half-face respirator, with a powered air-purifying respirator for extended or higher-exposure cutting, selected and maintained in accordance with AS/NZS 1715 and AS/NZS 1716. Respiratory protection is a residual control that sits below water suppression and on-tool extraction in the hierarchy — it manages the exposure that remains after the engineering controls are in place, not instead of them.
Why can't we dry sweep or use compressed air to clean up?
Dry sweeping and compressed air re-suspend the fine respirable crystalline silica that has settled, creating a fresh inhalation hazard that can exceed the exposure standard well after cutting has stopped. Clean-up must use an H-class (HEPA) vacuum or wet methods so the dust is captured rather than returned to the air.
Does the engineered stone ban affect concrete cutting?
No. The prohibition that commenced on 1 July 2024 applies to the manufacture, supply, processing and installation of engineered stone benchtops, panels and slabs. Concrete is a separate crystalline silica substance and is not banned, but cutting it is still subject to the strengthened crystalline silica provisions that apply to all materials containing at least one per cent crystalline silica.
Is health monitoring required for concrete cutters?
Health monitoring is required for workers who carry out high-risk processing of a crystalline silica substance. It includes a respiratory health questionnaire, lung function testing and chest imaging as advised by a registered medical practitioner, with results provided to the worker and records retained. The SWMS includes a health monitoring prompt and register to support that duty.