Question 93Safety & Environmental - QMED70% to pass
What should you do when the alarm bell on a self-contained breathing apparatus sounds?
AI Explanation
The correct answer is A) Immediately evacuate the contaminated area.
When the alarm bell on a self-contained breathing apparatus (SCBA) sounds, it indicates that the air supply in the SCBA tank is running low. This is a critical situation, as the user no longer has a reliable source of breathable air. The proper response is to immediately evacuate the contaminated area to a safe location with clean air.
The other options are incorrect because they involve attempting to reset or adjust the SCBA, which could be dangerous and delay the necessary evacuation. The user should not try to open the bypass valve, switch the tank selector, or move the reserve lever, as these actions could further deplete the limited air supply and jeopardize the user's safety.
Related Questions
#91 Artificial respiration may be necessary in cases of _______________.#92 The bypass valve on a self-contained breathing apparatus (SCBA) bypasses _______________.#94 Which unit will provide excellent mobility to the wearer in an unsafe atmosphere and provide oxygen to sustain life? #95 Which of the devices listed would be safe to use in a compartment with insufficient oxygen? #96 Why should you wear a self-contained breathing apparatus before entering a closed compartment to fight a fire?