What should a user do if the SCBA low pressure alarm sounds?

When the SCBA low pressure alarm sounds, it is an important indication that the air supply is becoming critically low. The correct action is to start conserving air and prepare to exit the hazardous area. This ensures that the user does not run out of breathable air while still engaged in work or rescue operations. Converting to a more conservative use of air helps prolong the remaining supply, allowing for a safer and more controlled exit.

Ignoring the alarm would pose a significant risk by potentially leading to a situation where the user is left without sufficient air. Continuing operations until empty would be dangerous, as it could result in losing the ability to breathe altogether. Increasing the air supply is not an option since the low pressure alarm indicates that the tank is nearing depletion, not that the air supply is under the user’s control. Thus, preparing to exit while conserving air is the safest and most responsible action to take in response to the alarm.