NFPA Diamond Hazard Rating System: The Coding System
The NFPA Diamond Hazard Rating System, formally known as NFPA 704, is a color-coded “fire diamond” that immediately conveys the hazard levels of materials across four quadrants—health (blue), flammability (red), reactivity (yellow), and special hazards (white)—each rated from 0 (no hazard) to 4 (severe hazard). This system is used by emergency responders to quickly assess … Read more