Flour Dust / Bakery SWMS
Flour handling — bulk receival, bag tipping, mixing, sieving, cleaning. Covers baker's asthma health monitoring, combustible-dust hazardous-area zoning, dough mixer guarding, and the new 0.5 mg/m³ flour dust WEL effective 1 December 2026 (down from current 10 mg/m³ WES).
SWMS variants reference your state's WHS legislation. Instant download after payment.
This SWMS covers flour handling and dough production in Australian bakeries, flour mills, pastry kitchens, pizza production plants, and industrial biscuit and cereal manufacturers — bulk flour receival and silo discharge, 25 kg bag tipping and dumping, sieving and sifting, mechanical mixing, dough dividing and provoking, oven loading and unloading, flour-handling plant cleaning, and warehouse management of flour stock. It is written for bakery operators, dough-room staff, mixer operators, production supervisors, cleaners responsible for flour-dust housekeeping, maintenance fitters, and WHS leads responsible for the new flour-dust workplace exposure limit taking effect on 1 December 2026. Every activity in this document has been authored against the Managing Risks of Hazardous Chemicals Code of Practice, the Managing Risks of Plant in the Workplace Code of Practice, AS/NZS 60079 for hazardous-area classification, and the Safe Work Australia Health Monitoring Guide for occupational respiratory sensitisers.
Flour dust is about to become one of the most tightly controlled airborne contaminants in the Australian workplace. From 1 December 2026 the Workplace Exposure Limit for inhalable flour dust drops from the current Workplace Exposure Standard of 10 mg/m³ (applied under Particulates Not Otherwise Classified) to **0.5 mg/m³ 8-hour TWA — a twentyfold reduction**. This change recognises flour dust as a proven respiratory sensitiser (baker's asthma is the second most frequent cause of occupational asthma claims in Europe) and as a carcinogenic airborne contaminant at chronic high exposure. The accompanying alpha-amylase enzyme added to most commercial bread flour is an even more potent sensitiser, capable of triggering baker's asthma at concentrations below 1 ng/m³. Beyond the respiratory hazard, flour forms explosive dust clouds at concentrations from 50 g/m³ upwards and is classified as a combustible dust requiring AS/NZS 60079 hazardous-area zoning around silos, sifters, and enclosed conveyors. Dough-mixer mechanical hazards were the basis of the WorkSafe Victoria prosecution against Makmur Enterprises Pty Ltd in October 2024 (dough-mixer finger amputation, breaches of OHS Act s.21(2)(a) and Regulation 99(3)(b)). This SWMS treats dust control, mechanical guarding, and combustible-dust zone management as three co-equal priorities and is built around the 1 December 2026 WEL transition.
Hazards identified
12 hazards covered, sorted by priority.
Permanent respiratory sensitisation and occupational asthma from chronic exposure to flour dust and alpha-amylase enzyme; a sensitised worker is career-ended for all flour-handling duties.
Full-thickness finger amputation or hand crush from contact with rotating spiral, planetary, or horizontal mixing elements during ingredient addition or cleaning, as in the Makmur Enterprises 2024 prosecution.
Primary dust-cloud ignition and secondary explosion propagation from accumulated flour on rafters and equipment surfaces; catastrophic structural damage and fatal blast injury to nearby workers.
Back, shoulder, and forearm injury from repeated lifting of 25 kg sacks from pallet to tipping hopper; peak dust exposure occurs in the same task window.
Thermal burns from contact with 180-250°C oven surfaces and scald burns from prover steam release.
Fall onto oven doors, against mixer bowls, or into other production plant; slip hazard is compounded by low-friction flour film on polished concrete.
Permanent hearing loss where depositors, cutters, and packaging lines combine to exceed 85 dB(A) over an 8-hour shift.
Potent respiratory sensitisation from the enzyme additive in commercial bread flour; can induce baker's asthma even where total flour-dust exposure is below the WEL.
Allergic and irritant contact dermatitis of the hands and forearms from flour enzymes, dough chemistry, and detergent exposure during plant cleaning.
Heat exhaustion and heat-related illness during high-summer production, particularly at oven-out and proving-room stations where ambient temperatures exceed 35°C.
Primary dust explosion at silo fill and at sifter-discharge chutes from static accumulated on non-bonded metal ducting during pneumatic transfer.
Respiratory and dermal exposure to caustic detergents, peracetic acid sanitisers, and alcohol-based quaternary-ammonium cleaners during end-of-shift cleaning.
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Elimination at source — bulk silo storage with enclosed pneumatic transfer direct to mixer or depositor, replacing manual bag tipping wherever production volume supports it. Elimination removes the peak dust-exposure task entirely.
- 2Substitution — low-dust agglomerated flour where product specification permits; substitution reduces the airborne-dust generation per bag tipped by 40-70% compared with standard milled flour.
- 3Engineering control — local exhaust ventilation hood at every bag-tipping station with capture velocity not less than 1 m/s at the tip-point; target airflow 150 m³/h minimum per hood. LEV capture also required at sieve discharge and mixer filling.
- 4Engineering control — mixer bowl guard interlock to AS/NZS 4024.1501 Category 3 safety circuit; interlock prevents motor start with guard open and stops the motor within 1 second of guard opening during operation. Verified at shift start.
- 5Mixer ingredient-addition port — designed so that ingredients can be added without reaching into the bowl during operation; where reach-in is unavoidable, the mixer is stopped, isolated, and locked out before the operator's hand crosses the guard line.
- 6Air monitoring — inhalable flour-dust personal monitoring every 12 months and after any change to extraction, flour supplier, or task profile. Current WES is 10 mg/m³ (Particulates Not Otherwise Classified); NEW WEL is **0.5 mg/m³ 8-hour TWA effective 1 December 2026 — a 20× reduction**. Workplaces currently compliant with PNOC will likely require extraction upgrades or respiratory protection to meet the new WEL.
- 7Health monitoring — baseline spirometry and respiratory questionnaire for every flour-handling worker at commencement; follow-up at 6 weeks and 3 months during the sensitisation window; annual spirometry thereafter. Conducted by a registered medical practitioner per WHS Regulation r368 application to respiratory sensitisers listed in the Safe Work Australia Health Monitoring Guide.
- 8Respiratory protection — P2 disposable respirator to AS/NZS 1716 worn during every bag-tipping operation and during plant cleaning tasks generating visible airborne dust. Fit-tested on issue and at 12-month intervals.
- 9Hazardous-area classification — bag-tipping zones, silo fill points, sieve discharges, and enclosed conveyors classified as Zone 22 (or Zone 21 inside equipment) per AS/NZS 60079. All electrical equipment in zoned areas rated for the classification; static-dissipative footwear for workers in Zone 22 areas.
- 10Bonding and earthing of all pneumatic-transfer ducting, silos, and metal hoppers to a common earth bar. Bond-continuity check weekly with a test meter. Non-conductive plastic ducting is prohibited on dust-generating plant without demonstrated static-dissipation performance.
- 11Housekeeping — wet clean-up or HEPA-filtered vacuum only; compressed-air cleaning of flour dust is prohibited because it generates a primary ignitable dust cloud. Overhead and ledge cleaning scheduled weekly to prevent accumulation above 0.8 mm dust layer (the threshold for secondary explosion propagation).
- 12Combustible-dust risk assessment per AS/NZS 60079 and the Dust Explosion Risk Management Plan, reviewed annually and after any plant modification. Dust-layer monitoring programme with photographic evidence retained for regulator inspection.
- 13Flammable-liquid and cleaning-chemical storage — dedicated cleaning-chemical store separated from flour-handling plant; SDS register and dangerous-goods manifest maintained at the site entrance and at the chemical store.
- 14Heat-stress management — ambient temperature monitoring at oven-out and proving stations, scheduled rest breaks with access to cool water, uniforms specified with breathable fabric, and work-rest cycles adjusted during high-summer production.
- 15PPE baseline — P2 respirator during dust-generating tasks; close-fitting cotton or linen workwear, apron for oven-out and wet-dough work, nitrile gloves for cleaning, safety footwear with oil-resistant and static-dissipative soles, Class 4 hearing protection in packaging areas, and head covering for food-safety as well as dust-hair protection.
- 16Training and authorisation — bakery-operator competency assessment covering mixer isolation, bag-tipping RPE, housekeeping procedure, and dust-explosion awareness. Apprentices under direct line-of-sight supervision until signed off. Annual refresher training documented for every flour-handling worker.
Applicable Codes of Practice
Core binding guidance for flour-dust exposure control, airborne contaminants, workplace exposure limits, and health monitoring for respiratory sensitisers.
Applies to dough mixers, sifters, pneumatic-transfer plant, ovens, and all mechanical guarding requirements including the dough-mixer interlock cited in the Makmur Enterprises prosecution.
Applies to packaging lines, mixer motors, and combined production-floor noise exposure.
Applies to 25 kg flour-sack handling, dough tipping, and repetitive bakery production tasks.
Non-binding but authoritative guidance on baseline and ongoing spirometry, questionnaire, and allergen skin-prick testing for flour-exposed workers.
Technical standard for classification of flour-dust zones (Zone 21/22), equipment selection, and static-control measures around silos, sifters, and pneumatic transfer.
Applies to cleaning chemicals, oils, and flammable-liquid storage adjacent to bakery production.
High-Risk Construction Work triggered
Flour dust is a respiratory sensitiser recognised by the Safe Work Australia Health Monitoring Guide, a combustible dust classified under AS/NZS 60079, and from 1 December 2026 subject to a new Workplace Exposure Limit of 0.5 mg/m³ — a 20× reduction from the prior Particulates Not Otherwise Classified standard.
Because this work involves a recognised respiratory sensitiser and a combustible dust with a new Workplace Exposure Limit effective 1 December 2026, the SWMS must be prepared before work commences, kept available on site for inspection, reviewed ahead of the 2026 WEL transition, and provided to the Principal Contractor on request. Health monitoring under the Safe Work Australia Guide is strongly indicated for all flour-handling workers and may be triggered by WHS Regulation r368 where air monitoring confirms exposure near the WEL. Mechanical-guarding breaches on dough mixers have been prosecuted under WHS Regulation 99(3)(b) with maximum body-corporate penalties for a serious injury, as in WorkSafe Victoria v Makmur Enterprises Pty Ltd (2024) — charged after a dim-sim-maker's finger was lacerated in the mixer. Failure by a PCBU to prepare or keep a current SWMS is an offence under Section 300.
Who this is for
- →Bakery operators, pastry chefs, and dough-room staff in retail, wholesale, and industrial baking operations.
- →Flour-mill operators, silo attendants, and pneumatic-transfer plant supervisors.
- →Production supervisors, shift leaders, and maintenance fitters responsible for mixer guarding, LEV performance, and plant cleaning.
- →Cleaners and housekeeping staff responsible for flour-dust accumulation control in production and warehouse areas.
- →WHS leads and production managers responsible for the 1 December 2026 WEL transition, health monitoring programmes, and combustible-dust risk management plans.
What you receive
- ✓Editable Microsoft Word (.docx) document delivered within 24 hours of payment.
- ✓Title page with bakery or mill name, ABN, production supervisor, plant asset register, and revision date fields.
- ✓Signed approval block for bakery owner, production supervisor, and nominated WHS lead.
- ✓Hazard register with the 12 hazards above, each with consequence, inherent risk, controls, and residual risk scored on a 5x5 likelihood-consequence matrix.
- ✓Hierarchy-of-control measures cross-referenced to the Managing Risks of Hazardous Chemicals CoP and the 1 December 2026 WEL transition.
- ✓Mixer lock-out tag-out procedure template aligned to AS/NZS 4836 with the AS/NZS 4024.1501 interlock verification record.
- ✓Flour-dust personal air-monitoring record template and respiratory health-monitoring programme schedule.
- ✓Combustible-dust hazardous-area classification record per AS/NZS 60079 with Zone 21/22 mapping template.
- ✓Daily pre-start inspection checklist covering mixer guarding, LEV, housekeeping, bonding continuity, and emergency stop.
- ✓Legislation schedule pre-populated for NSW with variance table for VIC, QLD, SA, WA, TAS, NT, ACT, and incident-reporting guidance including the Makmur Enterprises reference case.
Worked example
A medium-sized bakery in western Sydney produces bread and rolls at 1800 kg flour per shift, tipping 20 × 25 kg bags during the first two hours of production plus six bulk silo discharges for the overnight run. The dough-room operator fits a P2 disposable respirator (fit-tested four months ago) before the first bag tip, stands at the LEV-hooded tipping station delivering 165 m³/h capture airflow, and uses the pallet-lifter to bring bags to the hopper rim. The spiral mixer's bowl-guard interlock is verified at shift start — deliberate open-test stops the motor within 0.6 seconds. Ingredient addition is performed through the designed ingredient port without reaching into the bowl; the occasional hand-scrape of bowl sides is done with mixer isolated and padlock applied. The tipping zone is classified as Zone 22 under the site's AS/NZS 60079 hazardous-area plan; the operator wears static-dissipative safety boots and the hopper and ducting are bonded to a common earth bar (continuity checked the previous Friday). End-of-shift cleaning uses an M-class HEPA vacuum, not compressed air, and overhead dust-layer inspection is scheduled every Wednesday. Personal air monitoring conducted the previous month recorded an 8-hour TWA flour-dust exposure of 1.8 mg/m³ — compliant with the current 10 mg/m³ PNOC standard but above the 0.5 mg/m³ WEL effective 1 December 2026. The bakery has committed to upgrading LEV at two stations and moving one bag-tipping task to bulk pneumatic transfer ahead of the 2026 transition. All six dough-room workers are enrolled in annual spirometry conducted by the contracted occupational-health provider.
Related legislation
- Work Health and Safety Act 2011 (NSW) — Section 19 primary duty of care; Section 27 officer due diligence; Section 47 worker consultation.
- WHS Regulation 2025 (NSW) — r. 49 airborne contaminants; r. 50 air monitoring; r. 368 health monitoring; r. 99 plant inspection and maintenance; Part 7.1 Hazardous Chemicals; Part 4.5 Plant.
- Occupational Health and Safety Act 2004 (Vic) — equivalent duty-of-care provisions; Regulation 99(3)(b) on which the Makmur Enterprises 2024 prosecution was based.
- Food Act 2003 (NSW) and Food Standards Code — parallel food-safety obligations that intersect with cleaning-chemical and housekeeping procedures.
- Dangerous Goods Act 1975 (NSW) — cleaning chemicals and flammable-liquid storage adjacent to bakery production.
- Fair Work Act 2009 — apprentice supervision obligations for bakery and pastry apprentices operating high-risk plant.
Frequently asked questions
What does the 1 December 2026 flour-dust WEL change mean for my bakery?
From 1 December 2026, inhalable flour dust is subject to a new Workplace Exposure Limit of 0.5 mg/m³ 8-hour TWA — a 20× reduction from the current 10 mg/m³ Particulates Not Otherwise Classified standard that applied previously. Bakeries currently compliant with the old standard will in most cases need to upgrade local exhaust ventilation, move to bulk pneumatic transfer for peak-exposure tasks, or add respiratory protection to achieve the new WEL. The SWMS includes an air-monitoring record template to establish a pre-transition baseline and to track progress against the new limit.
Is a SWMS legally required for bakery operations outside construction?
A SWMS is only mandated for High-Risk Construction Work under WHS Regulation Schedule 1. Bakery and food-production work is not construction work and does not meet that definition. However, the PCBU duty under Section 19 of the WHS Act and the plant-specific and chemical-specific obligations in WHS Regulation Parts 4.5 and 7.1 still require documented safe work procedures. ISO 22000 food-safety audits and major-retailer supplier audits also expect a documented SWMS-equivalent document.
What health monitoring should I put in place for flour-handling workers?
Although flour dust is not explicitly listed in Schedule 14 of the WHS Regulation, it is a recognised respiratory sensitiser in the Safe Work Australia Health Monitoring Guide. The recommended programme is baseline spirometry and respiratory questionnaire on commencement, follow-up at 6 weeks and 3 months during the sensitisation window, and annual spirometry thereafter. Where airborne exposure approaches the WEL, the programme becomes a stronger regulatory expectation. The SWMS includes the referral letter template and the 30-year record-retention guidance.
How do I manage combustible-dust risk at my silos and sifters?
AS/NZS 60079 requires hazardous-area classification of all locations where flour dust can form an ignitable cloud. Zone 22 applies to external locations where dust clouds are expected occasionally and for short periods; Zone 21 applies to areas inside equipment where clouds are present during normal operation. All electrical equipment in zoned areas must be rated for the classification, bonding and earthing must be maintained, and dust-layer accumulation must be kept below the 0.8 mm threshold for secondary propagation. The SWMS includes a hazardous-area mapping template and a dust-layer inspection log.
What was the Makmur Enterprises prosecution and how does it affect my mixer operation?
WorkSafe Victoria charged Makmur Enterprises Pty Ltd in October 2024 after a dim-sim-maker's finger was lacerated in a dough mixer. The charges cited breaches of OHS Act s.21(2)(a) and OHS Regulations r99(3)(b) — failure to ensure plant is safe and failure to guard moving parts. The case confirms that dough-mixer bowl-guard interlocks are a hard regulatory expectation, not a good-practice suggestion. This SWMS includes a mixer interlock verification procedure and places bowl-guard function at the top of the daily pre-start inspection.
Is this SWMS compliant with the 1 July 2026 Section 26A changes?
Yes. From 1 July 2026, 34 Codes of Practice become legally binding under Section 26A of the amended WHS Act. This SWMS cites the currently-approved Codes that will become binding — Managing Risks of Hazardous Chemicals, Managing Risks of Plant, Managing Noise, and Hazardous Manual Tasks. The document is also structured for the 1 December 2026 flour-dust WEL transition so that no amendment is required beyond the air-monitoring update.
Document details
More Food Processing sub-task SWMS
Each single-activity template is $35 AUD.