Chemical substances are rated for degree of HEALTH RISK (blue diamond), FLAMMABILITY ( red diamond ), REACTIVITY (yellow diamond), on a scale of 0 to 4.
How many colored hazard diamonds does the National Fire Protection Association?
The system uses a color-coded diamond with four quadrants in which numbers are used in the upper three quadrants to signal the degree of health hazard (blue), flammability hazard (red), and reactivity hazard (yellow). The bottom quadrant is used to indicate special hazards.
What do the colors on the NFPA diamond represent?
The four bars are color coded, using the modern color bar symbols with blue indicating the level of health hazard , red for flammability, orange for a physical hazard, and white for Personal Protection. The number ratings range from 0-4. The Health section conveys the health hazards of the material.
What does 4 represent in the NFPA 704 Diamond?
Number System: NFPA Rating and OSHA’s Classification System 0-4 0-least hazardous 4- most hazardous 1-4 1-most severe hazard 4-least severe hazard • The Hazard category numbers are NOT required to be on labels but are required on SDSs in Section 2. ... Acute (short term) and chronic (long term) health hazards.
What does the NFPA 704 diamond placard indicate?
A four section multicolor “square-on-point” (diamond/placard) is used to address the health, flammability, instability and special hazards presented by short-term, acute exposures that could occur during fires, spills or other similar emergencies .
What does Level 4 flammability hazards indicate?
Risk level 4: Very flammable gases or very volatile flammable liquids . Shut off flow and keep cooling water streams on exposed tanks or containers. Risk level 3: Materials that can be ignited under almost all normal temperature conditions. Water may be ineffective because of the low flash point.
How are fire hazard rankings determined?
Each color code (blue, red, and yellow) of the hazard rating system corresponds to a hazard: health, fire, and instability (denotation or chemical change). Within each colored section, a numerical rating is given to the hazard. The ratings range from 0 to 4. A rating of 4 is the highest.
What do the colors mean in the ERG?
The ERG is divided into sections, each with its own color. The typical starting point is looking up a substance by name (blue pages), ID (UN) number ( yellow pages ) or image (placard, rail car, trailer). YELLOW: The yellow pages list chemicals in numerical order based on their assigned ID number (UN number).
What is the white section of the NFPA diamond?
The white diamond, appearing at the bottom of the label, conveys Special Hazard information . This information is conveyed by use of symbols that represent the special hazard.
What does the yellow section in the diamond mean?
The Yellow concerns Reactivity, or the chemical’s ability to react with other chemicals in the environment . The white indicates special precautions, usually used for oxy, or oxidizing agent.
What does NFPA mean?
The National Fire Protection Association (NFPA) is a global self-funded nonprofit organization, established in 1896, devoted to eliminating death, injury, property and economic loss due to fire, electrical and related hazards.
What does the R stand for in ERG?
Emergency Response Guide. What does the R stand for in ERG? Safety of responders .
What does a flammability rating of 1 mean?
1 Combustible if heated . 0 Not combustible . Instability (Yellow) (Reactivity) 4 Danger- Explosive material at room temperature. 3 Danger – May be explosive if shocked, heated under confinement, or mixed with water.
What is the safety symbol for corrosive?
Exclamation Mark : An immediate skin, eye or respiratory tract irritant, or narcotic. Gas Cylinder: Gases stored under pressure, such as ammonia or liquid nitrogen. Corrosion: Materials causing skin corrosion/burns or eye damage on contact, or that are corrosive to metals.
Are NFPA diamonds required?
NFPA 704 labels are required when another Federal, state or local regulation or code requires their use . NFPA 704 does not specify when a container, tank or facility must label with the 704 diamond.
Where do we use the DOT placard system?
Often they are placed on the exterior of transport vehicles . They must be on all 4 sides – placards need to be displayed on all four sides of a transport vehicle or bulk packaging.
