2-Ignites if moderately heated. 3-Can be ignited at all normal temperatures. 4-Very flammable gases or very volatile flammable liquids. The yellow diamond, appearing at the right side of the label, conveys Reactivity (or Stability) information.
What does the number 4 in the Red Diamond represent?
A four in the red indicates an extremely high ability to ignite and combust. 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 a 4 mean for each of the three colored parts of the NFPA diamond?
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 does it mean when the NFPA health hazard rating is 4?
Level 4 – Materials that can affect health or cause serious injury, during periods of very short exposure, even though prompt medical treatment is given. Level 3 – Materials that can affect health or cause serious injury, during periods of short exposure, even though prompt medical treatment is give.
What does the number 4 mean in any colored diamond on an NFPA or HMIS warning label?
For HMIS I and II, the criteria used to assign numeric values (0 = low hazard to 4 = high hazard) are identical to those used by NFPA.
What are the 9 hazard symbols?
Hazard pictograms (symbols)
- Explosive (Symbol: exploding bomb)
- Flammable (Symbol: flame)
- Oxidising (Symbol: flame over circle)
- Corrosive (Symbol: corrosion)
- Acute toxicity (Symbol: skull and crossbones)
- Hazardous to the environment (Symbol: environment)
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 hazards are more typical for emergency response applications.
What is full form of NFPA?
National Fire Protection Association (NFPA) is a United States trade association established in 1896, is to reduce the worldwide burden of fire and other hazards on the quality of life by providing and advocating consensus codes and standards, research, training, and education.
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 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.
What is the NFPA rating for health?
NFPA 704 rating system is a standard system developed by the U.S.-based National Fire Protection Association (NFPA) for indicating the health, flammability, reactivity and special hazards for many hazardous chemicals through the use of the NFPA 704 Diamond.
What does the NFPA diamond tell you?
The system addresses the health, flammability, instability, and special hazards presented from short-term, acute exposures that could occur as a result of a fire, spill, or similar emergency.