ACT adopts lower aluminium welding fume WES on 9 September 2026
The Australian Capital Territory adopted the 1 mg/m³ eight-hour aluminium welding-fume standard on September 9, 2026. Its local commencement followed the November 2025 national-list revision.
This date establishes ACT commencement only. Other jurisdictions require their own adoption checks.
- Legal status
- in force
- Source check
- Sep 17, 2026
- Topic
- Aluminium welding fumes
- Technical review
- Jiaxi · 2026-09-23
What changed
Previous requirement
ACT aluminium welding WES was 5 mg/m3.
New requirement or current position
ACT WES is 1 mg/m3 8-hour TWA.
Who it affects
- Boat and vehicle repair
- Fabrication
- Construction
Dates and milestones
Commencement and compliance dates can differ. Read the conditions beside each date, including any stay or local adoption requirement.
- Announcement or publication
- Aug 19, 2026
- Recorded effective date
- Sep 9, 2026
Selected exposure values
These values need the scope, limit type and averaging period shown below. A proposed or advisory value is not a binding limit.
Aluminium welding fumes
1 mg/m3| Averaging period | 8-hour TWA |
|---|---|
| Limit type | WES |
| Scope | ACT workplaces under WHS regime |
What this could mean for your IH program
Apply the ACT commencement date when comparing historical samples.
Confirm applicability with a qualified practitioner before changing your program.
Questions and qualifications
- Regulator article is dated 19 August; the alerts index displays 17 August. Article date used.
Source evidence
- Reduction in workplace exposure standards for aluminium welding fumes
WorkSafe ACT · 19 August 2026; commencement paragraph
ACT adoption of aluminium welding 1 mg/m3 8-hour TWA commenced 9 September 2026.
- Work Safety Group
ACT Government · Updated aluminium welding fumes workplace exposure standard
Confirms 9 September 2026 commencement and the reduction from 5 to 1 mg/m3.
Managing your IH program
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