Firefighter Skills Chapter 2 - Types of Breathing Apparatus

Question 1

Open-circuit breathing apparatus

Answer 1

• Typically for structural FF.

- Tank of compressed air provides breathing air supply, exhaled air is released into the atmosphere.

Question 2

Closed-circuit breathing apparatus

Answer 2

• Recycles the user’s exhaled air by removing CO2 and adding O2 from a closed system.
• Many include small O2 tank as well.
• Used for extended operations, such as mine rescue work.

Question 3

Supplied-air respirator (SAR)

Answer 3

-External source for the breathing air.