What is another name for a self-contained breathing apparatus?

A self-contained breathing apparatus (SCBA) is specifically designed to provide breathable air in environments that are immediately dangerous to life or health. This apparatus typically includes a tank of compressed air and a full face mask that allows the user to breathe without relying on the surrounding atmosphere.

The term "demand type breathing apparatus" accurately describes the functional method of an SCBA. In this type of apparatus, air is provided to the user only when they inhale. This demand valve mechanism activates as the user breathes in, delivering air from the tank, which distinguishes it from other types of breathing apparatus that supply air continuously regardless of the user's breathing pattern.

Other options listed do not accurately represent a self-contained breathing apparatus—though they may relate to respiratory protection in some contexts, they are not synonymous with SCBA. For instance, a full face respirator typically relies on external filtered air rather than an independent air supply; a gas mask is more focused on filtering out harmful agents in the air rather than supplying breathable air; personal protective equipment encompasses a wide range of safety gear beyond just respiratory protection. Each of these items has different applications and functional components compared to a self-contained breathing apparatus.