Atmosphere-Supplying Respirators
Supplied-Air Respirator (SAR)
The SAR is a type of respiratory protection device that provides breathable air from an external source to the wearer.
Donning a Supplied Air Respirator
It is designed to protect the wearer from harmful contaminants in the surrounding environment, such as toxic gases, vapors, or particles.
Key Features
- Compressed air is delivered from a stationary source (located away from contaminated area) to a half or full facepiece mask via a hose.
- Worn when negative-pressure and powered air-purifying respirators do not provide adequate protection.
Advantages
- Provides high level respiratory protection.
- Provides positive pressure to mask so almost all leakage is outward.
- Less bulky and can be used for longer periods than self-contained breathing apparatus.
- May be easier for hospital personnel to use.
- Provides both respiratory and eye protection.
Disadvantages
- Length of air hose may limit mobility.
- Air hose may be a trip hazard.
- Clean source of breathing air is required.
- Fit testing is required.
- Immediately operable emergency escape respirator, escape hood, or escape mask is required.
- Communication can be difficult.
Knowledge Check Choose the best answer for the question.
2-6. Which type of respirator is not bulky and provides a positive-pressure air supply for a long periods?
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