The obligation
PCBUs must eliminate, so far as reasonably practicable, risks from hazardous atmospheres, hazardous chemicals and airborne contaminants in tunnel construction.
The Code links this to WHS Regulation sections 49 to 52 on exposure limits, airborne contaminant monitoring, hazardous atmospheres and ignition sources, and to sections 351, 352 and 529CE. Air monitoring is required to verify control measures, identify changing conditions and confirm compliance with workplace exposure standards. It does not replace any health monitoring required under the WHS Regulation.
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- What
- PCBUs must eliminate, so far as reasonably practicable, risks from hazardous atmospheres, hazardous chemicals and airborne contaminants in tunnel construction.
- Source
- safework.nsw.gov.au
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Frequently asked questions
Which WHS law does this come from?
Managing airborne contaminants and air quality in tunnels is a WHS requirement set out in Tunnels under construction (NSW). It is made under Work Health and Safety Act 2011 (NSW). The relevant provision is Tunnels under construction > Airborne contaminants § 17.
What does this WHS obligation require?
Managing airborne contaminants and air quality in tunnels is a WHS obligation under Tunnels under construction (NSW). In short, PCBUs must eliminate, so far as reasonably practicable, risks from hazardous atmospheres, hazardous chemicals and airborne contaminants in tunnel construction.
What changed recently?
Managing airborne contaminants and air quality in tunnels was last updated on 19 October 2026.