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Cadmium Work SWMS: Controlling Exposure Under the New 2026 Workplace Exposure Limit

Cadmium is a heavy metal classified by the International Agency for Research on Cancer (IARC) as a Group 1 carcinogen — it is a confirmed cause of lung cancer in humans, and chronic exposure causes irreversible kidney disease (Itai-itai disease) and bone demineralisation. On 1 December 2026, Safe Work Australia will reduce the workplace exposure limit (WEL) for cadmium (as Cd, inhalable fraction) from 0.010 mg/m³ to 0.001 mg/m³ — a 90 per cent reduction. This is the largest single downward revision to a WEL in Australian occupational health history and will require significant upgrades to engineering controls and health monitoring programmes across all industries where cadmium exposure can occur. Cadmium exposure in Australian workplaces arises from a predictable set of activities. Welding, cutting, or grinding galvanised steel releases cadmium oxide fume where the galvanising alloy contains cadmium — a common legacy coating on older structural steel, fasteners, and electrical components. Hard chrome and cadmium electroplating generates cadmium mist and fume at the plating bath. Metal recycling operations, particularly battery processing, involve the opening, shredding, and smelting of nickel-cadmium (NiCd) batteries that contain substantial cadmium fractions. Pigment manufacturing and certain phosphate fertiliser processes also present cadmium hazards. The new 0.001 mg/m³ WEL is so low that it cannot be reliably achieved without purpose-designed local exhaust ventilation (LEV), personal air monitoring to confirm control effectiveness, and a rigorous biological monitoring programme. Workers who have been exposed above the current (pre-December 2026) WEL — let alone the new limit — may already carry a significant kidney cadmium burden that will not reduce even after exposure ceases, because cadmium has a biological half-life of 10 to 30 years in the kidney. This SWMS template is developed in accordance with the WHS Regulations 2017 (Part 7.1 — Hazardous Chemicals), the Workplace Exposure Standards for Airborne Contaminants (Safe Work Australia, amended December 2026), the Model Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace, the Model Code of Practice: Welding Processes, and AS/NZS 4114 (Spray painting booths and allied equipment) where LEV is used. It must be customised for the specific site and reviewed with workers before use.

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Legal Requirements

regulation

WHS Regulations 2017, Part 7.1 (Hazardous Chemicals), regulations 356–383 (Health monitoring); Workplace Exposure Standards for Airborne Contaminants (SWA, amended effective 1 December 2026): cadmium (as Cd, inhalable) TWA 0.001 mg/m³

hrcw category

Category 10 — Work involving hazardous material or a contaminated area (WHS Regulation r291(1)(j)); cadmium compounds are Schedule 10 hazardous chemicals with mandatory health surveillance under r356

code of practice

Model Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace (SWA 2021); Model Code of Practice: Welding Processes (SWA 2020); Guidance: Work Health and Safety Management of Cadmium in the Workplace (SWA)

section 26a binding

true

Hazards

Hazard	Consequence	Likelihood
Inhalation of cadmium fume during welding, cutting, or heating of cadmium-coated or cadmium-containing metals	Cadmium oxide fume generated during welding or thermal cutting of cadmium-plated components is inhaled directly into the deep lung. Acute cadmium pneumonitis presents 4–24 hours post-exposure with severe respiratory distress, pulmonary oedema, and can be fatal at high exposure. Chronic low-level inhalation causes progressive kidney tubular dysfunction, lung cancer (IARC Group 1), emphysema, and bone disease. There is no reversal — the kidney cadmium burden accumulated over a career persists for decades.	Almost Certain (A) without effective LEV — cadmium fume concentrations during uncontrolled welding of galvanised steel routinely exceed the new 0.001 mg/m³ WEL by 10 to 100-fold
Inhalation of cadmium mist and fume from hard chrome/cadmium electroplating baths	Cadmium electroplating baths generate a fine aerosol and hydrogen gas at the bath surface. Without rim ventilation, cadmium mist disperses throughout the plating shop at concentrations that regularly exceed the new WEL. Long-term plating workers develop cadmium nephropathy (irreversible tubular proteinuria) as the most sensitive health endpoint, with lung cancer and emphysema as additional long-term risks.	Almost Certain (A) without rim LEV on plating tanks
Cadmium dust generation during opening, shredding, or smelting of nickel-cadmium batteries in recycling operations	NiCd batteries contain 15–20% cadmium by weight. Mechanical shredding without controlled ventilation generates cadmium-contaminated dust at concentrations far exceeding the new WEL. Smelting operations volatilise cadmium at high temperature, producing cadmium oxide fume at extreme concentrations. Workers in battery recycling who lack engineering controls are among the highest-risk cadmium-exposed populations in Australia.	Almost Certain (A) during uncontrolled mechanical processing
Skin and eye contact with cadmium compounds during plating solution handling or surface cleaning	Cadmium compounds cause localised skin irritation, dermatitis, and mucous membrane irritation. While dermal absorption of cadmium is less significant than inhalation, cadmium compounds on broken skin can enter the bloodstream. Eye contact with cadmium solution causes acute irritation and carries a risk of corneal damage.	Likely (B) during plating solution top-up, filter maintenance, and tank cleaning without appropriate PPE
Ingestion of cadmium via contaminated hands, surfaces, food, or drink	Oral ingestion of cadmium results in direct gastrointestinal absorption, contributing to the total body cadmium burden. Workers who eat, drink, or smoke in or near cadmium work areas, or who fail to wash hands before these activities, receive an additional ingestion dose on top of inhalation exposure. Gastrointestinal absorption of cadmium averages 3–8% of ingested dose and increases significantly in workers with iron deficiency.	Possible (C) without strict hygiene controls and demarcated clean eating areas
Disposal and handling of cadmium-contaminated waste including filters, PPE, sludge, and plating residues	Cadmium waste — LEV filters, plating sludge, used PPE, contaminated cleaning cloths — retains its cadmium content and presents ongoing inhalation and contact exposure risk to workers who handle it without appropriate controls. Improper disposal to general waste also creates environmental contamination and regulatory liability under state EPA legislation.	Likely (B) without a documented waste handling and disposal procedure

Controls (Hierarchy of Controls)

[Elimination] Specify cadmium-free processes and materials where technically feasible — substitute cadmium electroplating with zinc-nickel alloy plating, trivalent chromium plating, or organic coatings that provide equivalent corrosion resistance without cadmium

[Elimination] Specify cadmium-free fasteners, components, and alloys in engineering designs — many aerospace and defence applications that historically used cadmium-plated fasteners now have approved cadmium-free alternatives

[Substitution] Substitute NiCd batteries with lithium-ion or nickel-metal hydride alternatives across fleet and equipment procurement to eliminate cadmium battery recycling hazard at source

[Substitution] Where welding on cadmium-coated steel cannot be eliminated, remove the coating from the weld zone by mechanical means (grinding, not heating) before welding to reduce fume generation at the heat source

[Engineering] Install purpose-designed local exhaust ventilation (LEV) for all cadmium-generating processes — rim ventilation on plating tanks capturing ≥90% of bath mist at the tank surface; on-gun extraction for cadmium welding; enclosed processing with HEPA-filtered exhaust for battery shredding

[Engineering] Maintain LEV performance to design specification with 6-monthly LEV testing by a competent person; minimum face velocity 0.5 m/s for enclosing hoods; capture velocity 1.0 m/s at open-face hoods at the furthest point from the exhaust

[Engineering] Implement wet suppression for any cadmium dust-generating processes where LEV cannot achieve adequate capture

[Engineering] Install continuous fixed-point air monitoring with alarm at 50% of the new WEL (0.0005 mg/m³) in cadmium work areas; calibrate monitors 6-monthly

[Administrative] Restrict access to cadmium work areas — designated controlled zone with visible signage, access log, and training prerequisite before entry

[Administrative] Conduct personal exposure air monitoring using calibrated pumps and NATA-accredited laboratory analysis — before commencement of cadmium work, after any process change, and at minimum quarterly during ongoing operations; compare to new 0.001 mg/m³ WEL

[Administrative] Implement biological monitoring programme — urinary cadmium (action level 5 nmol/mmol creatinine) and urinary beta-2-microglobulin (kidney tubular marker) 6-monthly under WHS Reg r356; retain health records 30 years

[Administrative] Establish hygiene protocols — workers shower and change into clean clothing before leaving the cadmium work area; no food, drink, or smoking permitted in or adjacent to cadmium areas; dedicated lunchrooms located away from work area

[Administrative] Classify and dispose of all cadmium waste as hazardous chemical waste under state EPA requirements — HEPA-filtered vacuum for cleanup (no dry sweeping); double-bag contaminated materials; licensed waste contractor for disposal

[PPE] Minimum P3 half-face respirator (AS/NZS 1716) for incidental or short-duration cadmium exposure; supplied-air respirator (SAR) for sustained tasks exceeding 15 minutes or where LEV performance is uncertain; PAPR with P3 filters as alternative where supplied air is unavailable

[PPE] Disposable Type 5/6 coveralls for cadmium process work; launder reusable clothing separately from personal clothing if reusable garments are used

[PPE] Chemical-resistant gloves Category III minimum (nitrile minimum 0.2 mm thickness) for contact with cadmium solutions or cadmium-contaminated surfaces; AS/NZS 2161.3

[PPE] Safety boots to AS/NZS 2210; face shield (AS/NZS 1336) for plating operations; safety glasses for all cadmium work areas

Recent Prosecutions

WorkCover NSW v metal recycling operator — cadmium fume exposureImprovement notices and enforceable undertaking; subsequent prosecution under WHS Act

A metal recycling operation processed NiCd batteries without adequate LEV or health monitoring. Workers were found to have urinary cadmium levels exceeding the biological action level, indicating significant systemic absorption. The regulator issued improvement notices requiring immediate LEV upgrade, biological monitoring, and cessation of battery processing until controls were verified. The operator had no SWMS and no exposure monitoring programme in place.

2023 — SafeWork NSW enforcement register

Post-WEL review enforcement — electroplating industryCategory 1 (gross negligence): up to $11.8M body corporate; Category 2: up to $3.8M

Following the announcement of the new 0.001 mg/m³ WEL effective 1 December 2026, Australian state WHS regulators issued advisory notices to the electroplating industry identifying cadmium plating operations as a priority inspection target. Operators without current exposure monitoring data referenced to the new WEL, without biological monitoring programmes, and without SWMS addressing the new limit face Category 1 or 2 prosecution risk if workers are exposed above the revised limit.

2026 — Safe Work Australia WEL transition guidance

What Your SWMS Must Include

✓Cadmium identified as a specific hazard with reference to the new WEL (0.001 mg/m³ TWA effective 1 December 2026) — not merely listed as a 'heavy metal' or 'hazardous substance'

✓Process-specific hazard identification listing every task that generates cadmium fume, dust, or mist

✓LEV design specification including hood type, target face/capture velocity, and 6-monthly testing requirement

✓Personal air monitoring plan including sampling frequency, method, NATA-accredited laboratory, and action levels referenced to the new WEL

✓Biological monitoring programme under WHS Reg r356 — urinary cadmium and beta-2-microglobulin schedule, action levels, and medical referral trigger

✓Respiratory protective equipment programme — respirator class (P3 minimum), fit-testing records, maintenance schedule

✓Cadmium waste classification and disposal procedure referencing state EPA hazardous waste requirements

✓Hygiene protocol including shower/change facilities, prohibition on food/drink/smoking in cadmium areas

✓Emergency procedures for acute cadmium fume exposure (cadmium pneumonitis) including symptom recognition, medical evacuation, and regulator notification

✓Worker training records confirming cadmium hazard awareness and SWMS sign-on before commencement

✓ALARP demonstration — documented assessment that controls reduce exposure as low as reasonably practicable below the new 0.001 mg/m³ WEL

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