Which is a recommended safety precaution for firefighters when refilling an SCBA cylinder?

Filling the SCBA (Self-Contained Breathing Apparatus) cylinder slowly is important because it helps to prevent overheating. Rapid filling can cause the air to compress so quickly that it generates heat, which can damage the cylinder or lead to improper filling. Overheating can also compromise the integrity of the cylinder and the air quality, making it unsafe for firefighting operations.

By filling the cylinder slowly, firefighters ensure that the process is controlled, minimizing the risk of accidents and prolonging the life and effectiveness of the SCBA equipment. This safe practice aligns with industry standards and operation procedures, highlighting the importance of adherence to recommended safety protocols in potentially hazardous environments.