Hazmat Diamond Colors

The top square is red and describes flammability hazards the leftmost square is blue and describes health hazards and the rightmost square is yellow and describes reactivity hazards.

Hazmat diamond colors.

A value of 0 means that the material poses essentially no hazard whereas a rating of 4 indicates extreme. After april 2002 with the release of hmis iii yellow in the color bar which stood for reactivity was replaced by orange standing for physical hazard. It is a standard hazard rating system which provides a readily recognized easily understood system for identifying specific hazards and their severity using spatial visual and numerical methods to describe in simple terms the relative. The nfpa diamond consists of four color coded fields.

The four divisions are typically color coded with red on top indicating flammability blue on the left indicating level of health hazard yellow on the right for chemical reactivity and white containing codes for special hazards each of health flammability and reactivity is rated on a scale from 0 no hazard to 4 severe hazard. Before 2002 the fire diamond and the color bar both had sections colored blue red white and yellow. The common hazmat diamond is technically known as the national fire prevention association standard 704 for the classification of hazardous materials. Blue red yellow and white.

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