The numbers 0 to 4 are also used to rank reactivity hazards, as follows: 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 white diamond on the NFPA 704 symbol indicate?
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.
What does the color white within a diamond indicate?
The white indicates special precautions, usually used for oxy, or oxidizing agent. Sometimes fire diamonds can be misleading about the chemical hazards actually at a facility.
What does the white section on the NFPA label represent?
Instability can vary from minor chemical changes to explosive reactions. The last section of the NFPA color code is white. This area is often blank, as it is intended for special hazards beyond health, flammability, or instability and does not apply to a majority of hazardous materials.
Which color indicates health hazards in 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).
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 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 white in 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 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.
What color represents a health hazard?
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.
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 are the 4 hazard categories?
|Hazard Class||Associated Hazard Category|
|Gases under pressure||4 Groups include: Compressed gas, Liquefied gas, Dissolved gas, and Refrigerated liquefied gas|
|Flammable liquids||Categories 1 – 4|
|Flammable solids||Categories 1 and 2|
|Self-reactive substances||Types A-G|
What does the number at the bottom of the diamond shaped hazard label indicate?
The blue diamond, appearing on the left side of the label, conveys Health Hazard information for persons exposed to the material. A number from 0 to 4 is written in the blue diamond. The higher the number the higher the hazard, as follows: 0-No hazard.
How do you read a hazard diamond?
Each of the diamonds is color-coded and represents a different type of hazard. Within the diamond is a number (with the exception of the white diamond). The number corresponds to the level of danger a chemical poses. The lower the number, the lower the hazard.
What do hazard symbols mean?
Hazard symbols or warning symbols are recognisable symbols designed to warn about hazardous or dangerous materials, locations, or objects, including electric currents, poisons, and radioactivity. The use of hazard symbols is often regulated by law and directed by standards organizations.
What are the 9 DOT hazard classes?
The nine hazard classes are as follows:
- Class 1: Explosives.
- Class 2: Gases.
- Class 3: Flammable and Combustible Liquids.
- Class 4: Flammable Solids.
- Class 5: Oxidizing Substances, Organic Peroxides.
- Class 6: Toxic Substances and Infectious Substances.
- Class 7: Radioactive Materials.
- Class 8: Corrosives.