What is a positive-pressure self-contained breathing apparatus?

Answer 1

A positive-pressure self-contained breathing apparatus (SCBA) is a device that provides breathable air to the user in hazardous environments, such as those with toxic gases or low oxygen levels. It features a sealed mask that maintains positive pressure to prevent outside air from entering, ensuring the wearer receives clean air from a compressed air cylinder. This design is crucial for protecting firefighters, industrial workers, and emergency responders during critical operations. The positive pressure also enhances comfort and reduces the risk of contamination.