What does atmospheric testing involve in the context of confined spaces?

Atmospheric testing in the context of confined spaces is focused on measuring the levels of oxygen and hazardous gases. This is a critical safety procedure to ensure that the air within the confined space is safe for workers to enter. Confined spaces can pose significant risks, including atmospheres that are oxygen-deficient, enriched with hazardous gases, or contain toxic fumes. Therefore, testing accurately identifies these hazards before entry.

The significance of this practice is underscored by the need for workers to have adequate oxygen (typically between 19.5% and 23.5%) as well as to avoid exposure to toxic substances such as carbon monoxide, hydrogen sulfide, or volatile organic compounds. By conducting atmospheric testing, employers can implement necessary precautions and protective measures based on the findings, such as requiring ventilation or the use of personal protective equipment.

While checking for structural integrity, temperature variations, and monitoring noise levels are important factors in overall safety management, they do not specifically address the immediate atmospheric conditions that could directly affect life safety during confined space entry.