What must be ensured due to the weight of shielding gas when welding?

When welding, particularly in processes involving shielding gas, it is crucial to ensure increased airflow in the workspace. Shielding gases, such as argon and carbon dioxide, are heavier than air. If there is inadequate ventilation, these gases can accumulate in low-lying areas, which poses a health risk to workers as they can displace breathable air and lead to asphyxiation.

By increasing the airflow, you promote better mixing of the gases with the ambient air, reducing the risk of dangerous concentrations building up. This not only helps maintain a safe working environment but also ensures that any potential hazardous conditions are mitigated effectively. Proper ventilation strategies are essential for maintaining worker safety and compliant welding practices.