Blue on facility placards represents which hazard?

Blue on facility placards represents which hazard?

• A. Blue on facility placards represents health hazards.
• B. Red on facility placards represents health hazards.
• C. Blue on facility placards represents flammability hazards.
• D. Red on facility placards represents flammability hazards.

Answer: (B)

The blue color in facility placards signals health hazards. In the NFPA 704 system, the placard is a diamond divided into four colored sections: blue for health, red for flammability, yellow for reactivity, and white for specific hazards. The number inside each colored section (0 to 4) indicates how severe that hazard is, with blue numbers describing how toxic or harmful a substance is to health. For example, a higher blue number means greater risk to anyone exposed. The other colors cover different risks—red covers flammability, yellow covers reactivity, and white notes special hazards like oxidizers or corrosives—so blue specifically points to health-related dangers.

The blue color in facility placards signals health hazards. In the NFPA 704 system, the placard is a diamond divided into four colored sections: blue for health, red for flammability, yellow for reactivity, and white for specific hazards. The number inside each colored section (0 to 4) indicates how severe that hazard is, with blue numbers describing how toxic or harmful a substance is to health. For example, a higher blue number means greater risk to anyone exposed. The other colors cover different risks—red covers flammability, yellow covers reactivity, and white notes special hazards like oxidizers or corrosives—so blue specifically points to health-related dangers.