What best describes a supplied air respirator?

What best describes a supplied air respirator?

• A. A device that filters air from the surroundings
• B. A respirator that provides air through a hose
• C. A self-contained breathing apparatus
• D. A portable air-purifying respirator

Answer: (B)

A supplied air respirator is specifically designed to deliver clean, breathable air to the user from a remote source, typically through a flexible hose. This type of respirator is essential in environments where the air may be contaminated or where there is insufficient oxygen available. The air source is often located in a safe area, allowing the user to operate in hazardous conditions without relying solely on the ambient air. The distinction of a supplied air respirator from other types of respiratory protection lies in its operation; it does not filter surrounding air but instead supplies high-quality air from a different source. This is critical in settings where particulate matter, toxic gases, or low oxygen levels are present. In contrast, options that mention filtering air or being self-contained do not accurately represent the function and design of a supplied air respirator, as they either depend on environmental air or require on-board oxygen supplies.

A supplied air respirator is specifically designed to deliver clean, breathable air to the user from a remote source, typically through a flexible hose. This type of respirator is essential in environments where the air may be contaminated or where there is insufficient oxygen available. The air source is often located in a safe area, allowing the user to operate in hazardous conditions without relying solely on the ambient air.

The distinction of a supplied air respirator from other types of respiratory protection lies in its operation; it does not filter surrounding air but instead supplies high-quality air from a different source. This is critical in settings where particulate matter, toxic gases, or low oxygen levels are present. In contrast, options that mention filtering air or being self-contained do not accurately represent the function and design of a supplied air respirator, as they either depend on environmental air or require on-board oxygen supplies.