"NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association. First "tentatively adopted as a guide" in 1960, and revised several times since then, it defines the colloquial "fire diamond" or "safety square" used by emergency personnel to quickly and easily identify the risks posed by hazardous materials. This helps determine what, if any, special equipment should be used, procedures followed, or precautions taken during the initial stages of an emergency response.
Video NFPA 704
Codes
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 risk). The latest version of NFPA 704 sections 5, 6, 7 and 8 for the specifications of each classification are listed below. The numeric values in the first column are designated in the standard by "Degree of Hazard" using Arabic numerals (0, 1, 2, 3, 4), not to be confused with other classification systems, such as that in the NFPA 30 Flammable and Combustible Liquids Code, where flammable and combustible liquid categories are designated by "Class", using Roman numerals (I, II, III).
Maps NFPA 704
See also
- Globally Harmonized System of Classification and Labelling of Chemicals
- Hazard symbol
- HMIS Color Bar
- Hazchem
- Hazmat
References
External links
- "Frequently Asked Questions on NFPA 704" (PDF).
- "Pamphlet produced by the City of Milwaukee summarizing NFPA 704 code requirements" (PDF). City of Milwaukee.
- "Hazard Communication". Occupational Safety and Health Administration.
- "Safety in the Chemistry Laboratory: NFPA 704 Hazard Identification System". University of Oregon. Archived from the original on 2015-03-10.
Source of article : Wikipedia
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