What can cause asphyxiating atmospheres in confined spaces?

Asphyxiating atmospheres in confined spaces can indeed be caused by inerting gases. Inerting gases, such as nitrogen or carbon dioxide, can displace oxygen in the air, leading to a deficiency of oxygen available for respiration. When the concentration of oxygen in the atmosphere drops below safe levels, it can result in asphyxiation, which is a critical danger in enclosed or partially enclosed spaces.

While high humidity levels, excessive heat, and low lighting conditions can create uncomfortable and potentially hazardous working environments, they do not directly cause asphyxiation. High humidity can contribute to heat stress and reduce comfort levels, but it does not inherently reduce oxygen levels. Excessive heat poses risks related to heat stress and heat-related illnesses but does not affect atmospheric oxygen concentrations. Similarly, low lighting conditions may affect visibility and general safety but do not influence the composition of the atmosphere in terms of oxygen content.

Understanding how inerting gases contribute to asphyxiating atmospheres is crucial for safety professionals, particularly when performing risk assessments and implementing appropriate safety measures in confined spaces.