A number from 0 to 4 is written in the blue diamond. The higher the number the higher the hazard, as follows: The red diamond, appearing at the top of the label, conveys Flammability Hazard information. Again, the numbers 0 to 4 are used to rate the flammability hazard, as follows: 0-No hazard.
What do the numbers in the NFPA diamond represent?
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 is the highest warning number on the NFPA diamond?
The diamond is broken into four sections. Numbers in the three colored sections range from 0 (least severe hazard) to 4 (most severe hazard). The fourth (white) section is left blank and is used only to denote special fire fighting measures/hazards.
What does a number 3 in the health Section of the NFPA diamond signify?
3-Can cause serious injury despite medical treatment.
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.
How do you read a danger diamond?
The number corresponds to the level of danger a chemical poses. The lower the number, the lower the hazard. The numbers range from zero to four, with zero representing no hazard at all, and four representing an extreme hazard. Each number also has a specific meaning based on which diamond it is in.
What does the White represent on 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. … To determine the NFPA Hazard Ratings for a material that does not have the label affixed, check the Material Safety Data Sheet.
Is the NFPA diamond still used?
Their answer: Yes, OSHA will continue to allow NFPA and/or HMIS rating systems on labels and SDSs as supplemental information. However, the rules for labeling and placement on the SDSs still apply. See below for a detailed discussion on how one can use NFPA and/or HMIS rating systems on labels and SDSs.
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 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 do the numbers mean on the HMIS and NFPA Labels?
Numbers in the three colored sections range from 0 (least severe hazard) to 4 (most severe hazard). The fourth (white) section is left blank and is used only to denote special fire fighting measures/hazards. For additional information on NFPA, see More Resources below.