What is the primary concern when entering a confined space?

The primary concern when entering a confined space is assessing the presence of a hazardous atmosphere. Confined spaces can accumulate dangerous gases, vapors, or other hazardous materials that can pose serious risks to workers, including suffocation, explosions, or exposure to toxic substances. Before entering such areas, it's critical to conduct a thorough assessment to identify any potential hazards. This may involve testing the air quality and ensuring that it meets safety guidelines.

Ensuring tools are correctly stored, monitoring the time spent inside, and keeping the area clean are important safety practices, but they do not directly address the immediate life-threatening hazards that may be present in a confined space. Prioritizing atmospheric safety ensures that workers can proceed without the concern of hazardous conditions, making it the foremost consideration in these situations.