What is a major limitation of SCBA?

The major limitation of SCBA is the limited air supply, which restricts the duration of use. SCBAs are designed to provide breathable air in hazardous environments, but as users consume the air contained in the cylinder, their operational time is directly affected. This limitation means that personnel must carefully monitor their air supply and manage their time spent in dangerous areas to ensure they do not run out of air unexpectedly.

Understanding this aspect is critical for safety, as running out of air can lead to life-threatening situations, particularly in environments with toxic gases, smoke, or other hazards. Therefore, the limited air supply is a fundamental concern that necessitates planning and quick decision-making in emergency scenarios. While factors like visibility during use, equipment cost, and the intended application period are important, the immediate impact of air supply on operational capabilities makes it a primary limitation of SCBA systems.