Question 922 Deck Safety
70% to passWhat is the function of the bypass valve on the self-contained breathing apparatus?
A
The valve reduces the high pressure in the bottle to about 3 psi above atmospheric pressure.
B
When pressure in the apparatus exceeds 7 psi above atmospheric pressure, the valve opens to release pressure.
C
In the event of a malfunction in the equipment, the valve can be operated manually to give the wearer air.
D
The valve opens in excessive heat to release the oxygen in the bottle and prevent the bottle from exploding.
AI Explanation
The correct answer is C) In the event of a malfunction in the equipment, the valve can be operated manually to give the wearer air. The bypass valve on a self-contained breathing apparatus (SCBA) is designed to provide the wearer with an emergency backup air supply in case of equipment failure. This allows the wearer to safely exit a hazardous environment if the main air supply malfunctions. The other answer choices do not accurately describe the primary function of the bypass valve.
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