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The NFPA 704 fire diamond (or hazmat diamond) is described in NFPA Standard 704, maintained by the National Fire Protection Association. The system identifies four key hazards (health, flammability, instability and special) and their degree of severity. Hazard severity is rated numerically, ranging from 0 (minimal) to 4 (severe). These full-color guides will help you or your workers understand and apply NFPA ratings. Our guides are available in a variety of sizes and materials. Choose a chart below for sign options, or click the pdf links at bottom to read the full text of each guide. Please select a chart to see details: |
View Chart 1 as a PDF File
