What color must the hose be for a supplied air respirator?

The color of the hose for a supplied air respirator is standardized to blue. This designation is important for safety and operational consistency, as it helps workers easily identify the equipment associated with breathable air supply. Blue hoses are utilized to indicate a specific system for delivering clean air, allowing personnel on a site to quickly recognize that the hose is meant for supplying respiratory protection.

Color coding in safety equipment is essential in hazardous environments, as it streamlines communication and ensures that all workers are aware of the equipment being used. In this case, the blue hose symbolizes that it is part of an air supply system, differentiating it from hoses used for other purposes. This reduces the risk of cross-contamination and enhances safety protocols on job sites dealing with asbestos or other hazardous materials.