Which of the following is a limitation of self-contained breathing apparatus?

Self-contained breathing apparatus (SCBA) provides firefighters with crucial respiratory protection in hazardous environments; however, it does have inherent limitations that can impact performance and effectiveness. The correct answer highlights weight, air supply, and visibility as key factors.

Weight is significant because it can hinder mobility and stamina during firefighting operations. Firefighters must often navigate through difficult terrains and perform physically demanding tasks, so an overly heavy SCBA can lead to fatigue.

Air supply is also critical. The amount of breathable air contained in the SCBA determines how long a firefighter can operate effectively in a hazardous environment. Limited air supply can put a firefighter in dangerous situations if they exhaust their oxygen before they can exit or complete their task.

Visibility is another important limitation. Many SCBAs can limit peripheral vision and awareness due to their bulkiness, which can complicate movement and situational awareness in critical scenarios.

These limitations emphasize the need for careful consideration in equipment choice and effective training to minimize risks associated with the use of SCBA in the field. Each of these factors plays a vital role in a firefighter's operational effectiveness and safety.