What is the minimum oxygen level required for safe entry into a confined space?

The minimum oxygen level required for safe entry into a confined space is 19.5%. This level is crucial because oxygen below 19.5% can lead to unsafe working conditions, including difficulty in breathing and impaired cognitive and physical functions. At this threshold, workers may experience increased risks of hypoxia, where the body does not get enough oxygen to function properly.

Regulations and safety standards dictate that any environment with less than 19.5% oxygen should be treated as a hazardous atmosphere, necessitating precautions such as ventilation, monitoring, and personal protective equipment. This standard is in place to protect workers and ensure safe working conditions in enclosed or confined spaces.