What is the primary hazard of using an SCBA in confined spaces?

Using a Self-Contained Breathing Apparatus (SCBA) in confined spaces primarily poses the risk of entrapment and limited egress options. This is because confined spaces are typically characterized by their restricted access and limited room for movement. Navigating in these environments can be challenging, making it easier for an individual to become trapped, particularly in emergencies where quick exit is necessary.

Additionally, the bulkiness of SCBA equipment can complicate movement and increase the likelihood of becoming stuck in tight spots. When a rapid evacuation is needed due to sudden hazards—such as toxic gases, fires, or other emergencies—having limited exit routes can significantly heighten the risk of injury or fatality.

While equipment malfunction, immediate fire hazards, and hypoxia due to air supply depletion are important concerns in various situations, they do not encapsulate the fundamental challenge presented by the confined environment itself. In confined spaces, the ability to egress swiftly is crucial for safety, thus making entrapment and limited egress the primary hazard when utilizing SCBAs.