Which color in the NFPA system indicates flammability risk?

In the NFPA (National Fire Protection Association) labeling system, red is designated to indicate flammability risk. This color serves as a visual warning that a material can easily catch fire and pose significant danger in terms of ignition and combustion. The rating scale typically ranges from 0 to 4, with higher numbers indicating greater degrees of flammability hazards. A rating of 4 represents materials that can ignite readily under normal temperature conditions, highlighting their inherent danger to personnel and environments.

Understanding this color-coding system is crucial for firefighters and emergency responders, as it provides immediate visual cues about the risks associated with hazardous materials. This enables them to take appropriate precautions and make informed decisions during firefighting and response operations.