The color-coded hazard diamonds used to indicate on-scene hazards belong to which NFPA standard?

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Multiple Choice

The color-coded hazard diamonds used to indicate on-scene hazards belong to which NFPA standard?

NFPA 704 defines the color-coded hazard diamond used on scenes. This standard establishes the four colored sections—blue for health, red for flammability, yellow for reactivity, and white for special hazards—each with a number 0–4 to indicate severity. The purpose is to give responders a quick, at-a-glance assessment of potential dangers so personal protective equipment and actions can be prioritized immediately. The other options don’t fit this purpose: NFPA 170 covers safety symbols, the Emergency Response Guidebook is a reference resource rather than a standard, and GHS focuses on workplace labeling and safety data sheets rather than the on-scene hazard diamond used by responders.

NFPA 704 defines the color-coded hazard diamond used on scenes. This standard establishes the four colored sections—blue for health, red for flammability, yellow for reactivity, and white for special hazards—each with a number 0–4 to indicate severity. The purpose is to give responders a quick, at-a-glance assessment of potential dangers so personal protective equipment and actions can be prioritized immediately. The other options don’t fit this purpose: NFPA 170 covers safety symbols, the Emergency Response Guidebook is a reference resource rather than a standard, and GHS focuses on workplace labeling and safety data sheets rather than the on-scene hazard diamond used by responders.

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