Welding fume exposure standards have been tightened.

The permissible levels of welding fumes in Australian workplaces were significantly reduced in January 2024 following a decision by Australian Work Health and Safety Ministers. 

The new Workplace Exposure Standard (WES) lowers the allowable limit from an eight-hour time-weighted average of 5 mg/m³ to 1 mg/m³, a move aimed at reducing the risk of lung diseases among workers. 

This change took effect on 18 January 2024.

Welding processes can release a complex mix of hazardous fumes, mists, dust, vapours, and gases, including ozone. 

The health risks associated with these substances range from respiratory irritation, asthma, and metal fume fever to more severe conditions such as lung damage, bronchitis, cancer, pneumonia, and emphysema.

Under the model Work Health and Safety (WHS) laws, employers are legally obligated to eliminate or minimise health risks related to chemical exposures as far as reasonably practicable. 

This includes ensuring workers are not exposed to airborne contaminants above the revised WES limits, both for total welding fumes and for specific hazardous components within the fumes.

SafeWork Australia’s model Code of Practice: welding processes provides guidance to help manage the risks associated with welding, including exposure to welding fumes. 

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