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NFPA 704 Diamond
"NFPA 704 is the Standard System for the Identification of Hazardous
Materials for Emergency Response" run by the US-based National Fire
Protection Association. First "temporarily adopted as a guide" in
1960, and revised several times since then, it defines the daily "fire
diamonds" used by emergency personnel to quickly and easily identify the
risks posed by hazardous materials. It helps determine what, if any, specific
equipment should be used, the procedures followed, or the precautions taken
during the early stages of the emergency response. (source : Wikipedia, the free encyclopedia)
This standard presents a simple, easily recognizable, and easily understood
sign system (commonly referred to as "NFPA threat diamond") which
provides an overview of the material hazards and severity of these hazards as
they relate to emergencies. response.
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