How is the SCBA tested for leaks?

The method of testing the SCBA for leaks by pressurizing it and submerging it in water is effective because this process allows for a direct observation of air escaping from the system. When the SCBA is filled with air and is placed underwater, any leaks present will cause bubbles to form at the point of escape. This visual confirmation is a reliable and straightforward way to identify weak spots in seals, connections, or the tank itself, ensuring that the system maintains its integrity under the pressures it will encounter during use.

Although other methods such as visual inspections and pressure checks are important for overall maintenance and functionality, they may not reveal subtle leaks that could compromise safety in a live environment. The effectiveness of bubble formation through submersion makes this method a preferred practice for thoroughly checking the integrity of the SCBA’s seals and joints.