FIRE / Flammability Hazard - RED |
NFPA Hazard Diamond
FIRE / Flammability Hazard - RED | NFPA Hazard Diamond | Identification
Diagram
This hazard diamond is from the National Fire Protection
Association-NFPA Code. The first number relates to Health (Blue) Hazards, the
second number relates to Fire/Flammability (Red), and the third to Reactivity (Yellow).
The Health Hazard having the number from 0 to 4.
FIRE / Flammability Hazard (RED)
Hazard Rating 4 - Highly flammable gases, very volatile flammable liquids, and materials that in the form of dusts or mists readily form explosive mixtures when dispersed in air. Shut off flow of gas or liquid and keep cooling water streams on exposed tanks or containers. Use water spray carefully in the vicinity of dusts so as not to create dust clouds.
Hazard Rating 3 - Liquids that can be ignited under almost all regular temperature conditions. Water may be ineffective on these liquids because of their low flash points. Solids which form coarse dusts, solids in shredded or fibrous form that create flash fires, solids that burn rapidly, usually because they contain their own oxygen, and any materials that ignite instinctively at normal temperatures in air.
Hazard Rating 2 - Liquids that must be moderately heated
before ignition will occur and solids that
readily give off flammable vapors. Water spray may be used to
extinguish the fire because the material can be cooled to below its flash
point.
Hazard Rating 1 - Materials that must be preheated before ignition can occur. Water may cause frothing of liquids with this flammability rating number if it gets below the surface of the liquid and turns to steam. However, water spray gently applied to the surface will cause a frothing which will extinguish the fire. Most combustible solids have a flammability rating of 1.
Hazard Rating 0 - Materials that will not burn.
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