Which of the following are the main parts of an SCBA?

The main parts of a Self-Contained Breathing Apparatus (SCBA) include the harness, air cylinder, regulator assembly, and facepiece assembly.

The harness is designed to secure the SCBA to the firefighter's body, allowing for mobility and comfort during use. The air cylinder, often referred to as the air tank, contains compressed air that provides breathable air to the user. The regulator assembly controls the flow of air from the cylinder to the user, ensuring that proper air pressure is maintained. Finally, the facepiece assembly, which is typically the mask, forms a seal around the wearer’s face, allowing them to breathe safely while protecting against harmful airborne contaminants.

This combination of components is essential for the safe operation of SCBAs, especially in hazardous environments where breathable air may not be available.