Australia: PAPR rules for welding — AS/NZS 1716, the 1 mg/m³ welding-fume limit, and the 2030 move to ISO standards

Australia regulates welding PAPR through work health and safety (WHS) laws enforced by state and territory regulators, with equipment built to AS/NZS 1716:2012 and selected under AS/NZS 1715:2009. Three changes matter right now: the welding-fume exposure standard dropped to 1 mg/m³ on 18 January 2024, workplace exposure standards become “workplace exposure limits” on 1 December 2026, and both AS/NZS respirator standards are being replaced by a suite of AS/NZS ISO standards (including the ISO 17420 series) by 2030.

Which rules apply

Australia does not have a single national workplace-safety enforcer. Safe Work Australia (SWA) is a national policy body: it writes the model Work Health and Safety (WHS) laws, the workplace exposure standards and model codes of practice, but it states plainly that it is not a regulator. The model WHS laws have been implemented by the Commonwealth, and every state and territory except Victoria, which runs its own Occupational Health and Safety Act 2004 and OHS Regulations 2017 with closely aligned requirements. Day-to-day enforcement sits with the jurisdiction’s regulator: SafeWork NSW, WorkSafe Victoria, WorkSafe Queensland, WorkSafe WA, SafeWork SA, WorkSafe Tasmania, NT WorkSafe, WorkSafe ACT and Comcare (Commonwealth employers). Model codes of practice, including the model Code of Practice: Welding processes, only gain legal effect once a jurisdiction adopts them — SWA advises checking with your local regulator whether a given code applies where you work. For a welding business, this means the duties are near-identical nationwide, but inspection, notices and prosecutions come from the state body.

How PAPR certification works in Australia

Unlike the US NIOSH system, Australia has no government approval body for respirators. The product standard is AS/NZS 1716:2012 Respiratory protective devices, which sets requirements, performance and testing criteria for manufacture — powered air-purifying respirators (PAPR) included. Regulator guidance (for example WorkSafe Queensland’s RPE pages) states that respirators used at work should conform to AS/NZS 1716. Standards Australia notes that it is not a government agency, not a regulator, and plays no role in certifying products: conformity is demonstrated through independent certification bodies accredited by JAS-ANZ (the Joint Accreditation System of Australia and New Zealand). Certified manufacturers appear on the JAS-ANZ register, and regulator guidance describes the certification licence number being marked on the packaging of compliant RPE. In practice, buyers checking a welding PAPR look for AS/NZS 1716 marking on the blower unit, filters and headtop, plus the certifier’s mark. Standards Australia has confirmed that existing AS/NZS 1716:2012 certifications remain valid through the transition to ISO standards unless regulators specify otherwise.

Employer duties and the RPE programme

Under the WHS laws, a person conducting a business or undertaking (PCBU) must eliminate risks to health and safety so far as is reasonably practicable, or minimise them. Safe Work Australia’s welding-fume guidance applies the hierarchy of controls: eliminate, substitute or modify the welding process first, then engineering controls such as on-torch extraction and local exhaust ventilation, with respiratory protection used where exposure may still exceed the exposure standard — not as the first line of defence. PCBUs are expected to identify the hazardous components of their welding fume from safety data sheets or air-monitoring data, and to arrange air monitoring where they are uncertain whether an exposure standard would be exceeded. The selection, use and maintenance of RPE follows AS/NZS 1715:2009, which regulators cite as the reference for building an RPE programme: matching the device to the contaminant and its exposure level, training wearers, maintenance, and fit testing where the device seals to the face. Records of monitoring and health surveillance obligations also flow from the WHS Regulations where exposure to hazardous chemicals is significant.

Welding fume: the 1 mg/m³ exposure standard

On 18 January 2024, following agreement by Commonwealth, state and territory WHS ministers, the workplace exposure standard (WES) for welding fumes (not otherwise classified) was cut from 5 mg/m³ to 1 mg/m³ as an 8-hour time-weighted average. The change was implemented immediately across the model-WHS jurisdictions, and WorkSafe Victoria applied the same 1 mg/m³ standard under its own scheme, so the limit is national in effect. The reduction reflects the evidence that welding fume is carcinogenic to humans — workers exposed to it can develop lung cancer and other lung diseases. Two details matter for compliance: first, the 1 mg/m³ figure covers total welding fume, but individual components such as manganese, hexavalent chromium and nickel have their own, often lower, exposure standards that must also be met; second, regulators stress that meeting the WES is not enough on its own — the duty is to minimise exposure so far as reasonably practicable. The model Code of Practice: Welding processes is SWA’s guidance document for managing these risks.

Selecting a PAPR: protection factors and fit testing

AS/NZS 1715:2009 is the selection standard: it works by comparing the workplace exposure level with the required minimum protection factor (RMPF) of each class of device, and it distinguishes tight-fitting facepieces from loose-fitting hoods and headtops — the format used by most welding PAPR helmets. Filter classes under AS/NZS 1716 are P1, P2 and P3, and welding PAPR systems in Australia are typically supplied with P2 or P3 particulate filtration. On fit testing, SafeWork NSW states the position clearly: all close-fitting half and full facepiece respirators must be fit tested — before first use, when the model changes, after facial changes, and at least annually — using qualitative (half-face only) or quantitative methods, but fit testing is not required for positive-pressure loose-fitting headtops or hoods connected to a PAPR or a compressed airline. That exemption is one practical reason loose-fitting PAPR welding helmets are widely used for fume control. The exact RMPF value for each device class is set out in the standard itself, which is a paid document; the figures widely quoted by suppliers should be checked against the standard text.

What changed recently and what changes next

Three dates frame the current transition. 18 January 2024: the welding-fume WES dropped to 1 mg/m³, effective across all jurisdictions. 1 December 2026: workplace exposure standards are replaced by workplace exposure limits (WEL) — a change WHS ministers agreed in April 2024. SWA states the WEL list will apply once implemented in Commonwealth, state and territory WHS laws, and that many WEL values are lower than the current WES, so businesses may need extra controls before that date. 1 January 2030: Standards Australia and Standards New Zealand have announced that AS/NZS 1715:2009 and AS/NZS 1716:2012 will be superseded by a suite of more than 30 AS/NZS ISO standards, already adopted and usable in parallel today. These include the ISO 17420 series (9 parts, performance requirements — e.g. AS/NZS ISO 17420.2:2021 and 17420.4:2022), the ISO 16900 test-method series (14 parts), and the ISO 16975 series replacing AS/NZS 1715 — Part 1 (RPE programme), Part 2 (condensed selection guide) and Part 3 (fit-testing procedures). Manufacturers will retest and reclassify products; current AS/NZS 1716 certifications remain valid during the transition.

Sources & disclaimer

This page is information, not legal or safety advice. It summarises the cited public sources as of the date above; regulations change — verify against the primary source before relying on it. Product-level approval status is covered by our four-tier compatibility system.