When entering a confined space in water distribution systems, what is the primary concern?

When entering a confined space in water distribution systems, the primary concern is oxygen deficiency. Confined spaces, such as tanks, vaults, or pipelines, can have limited ventilation, leading to a buildup of gases or a reduction in available oxygen levels. This poses serious risks to workers, as insufficient oxygen can result in unconsciousness or even death within a short period. Therefore, ensuring adequate oxygen supply is crucial for safety.

While chemical exposure, temperature extremes, and noise levels are also important considerations when working in confined spaces, they typically take a secondary priority to the immediate and life-threatening risk of oxygen deficiency. Addressing oxygen levels is essential before any other safety measures can be effectively implemented.