What is the primary reason for regularly checking SCBA gauge readings?

Regularly checking SCBA gauge readings is essential primarily to ensure an adequate air supply for safe operation. The gauge indicates the remaining air pressure in the tank, which directly correlates with the amount of breathable air available to the user during an emergency. If the pressure falls below a certain level, it could endanger the user by leaving them unprepared for the duration required in a hazardous environment.

Ensuring that the air supply is sufficient allows the user to function effectively and safely while performing their duties, whether that involves firefighting, rescue operations, or entering environments with toxic or low oxygen levels. Making this check part of the safety protocols helps to prevent situations where a responder could be in danger due to unexpected air depletion.