Which NFPA symbol indicates the greatest risk?

“0” indicates no hazard and “4” indicates the most severe hazard. The white diamond uses different symbols to indicate different special hazards.

Which NFPA symbol indicates health risk?

The National Fire Association (NFPA) has developed a color-coded number system called NFPA 704. 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 NFPA rating represents the most severe hazards?

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.

What does the white diamond on the NFPA 704 symbol indicate?

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.

Which section of an NFPA 704 label indicates health hazards?

Codes. 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.

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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?

Physical Hazards

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 are the 9 DOT hazard classes?

A visor card guide for state and local law enforcement officials illustrating vehicle placarding and signage for the following nine classes of hazardous materials: 1) Explosives, 2) Gases, 3) Flammable Liquid and Combustible Liquid, 4) Flammable Solid, Spontanaeously Combustible and Dangerous When Wet 5) Oxidizer and …

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