What do the numbers mean on 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 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 the diamond with numbers mean?

What do the numbers and symbols on an NFPA fire diamond mean? 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.

IMPORTANT:  Do firefighters have lung issues?

What do the numbers mean on hazard signs?

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 does a 3 in the Blue Diamond mean?

1-Can cause irritation if not treated. 2-Can cause injury. Requires prompt treatment. 3-Can cause serious injury despite medical treatment. 4-Can cause death or major injury despite medical treatment.

What does the number 4 in the blue Diamond mean?

The numbers superimposed over the colors rank the severity or danger, ranging from one to four, with four being the highest rating. The blue indicates potential health effects. A four in the blue means severe and immediate health effects, including death, and a one time exposure can cause lasting health problems.

What does a health rating of 3 mean?

Chemical substances are rated for degree of HEALTH RISK (blue diamond), FLAMMABILITY (red diamond), REACTIVITY (yellow diamond), on a scale of 0 to 4. … Level 3 – Materials that can affect health or cause serious injury, during periods of short exposure, even though prompt medical treatment is give.

What do the grades of diamonds mean?

When writing the grades of a diamond using the AGS Scale, diamond Cut grade is first, then diamond Color, Clarity, then Carat Weight—in that order. If a diamond possessing the finest diamond Cut grade is also colorless, free of inclusions and blemishes, and weighs one carat, it would be written as: 0/0/0–1.000 carat.

How do you read NFPA ratings?

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.

IMPORTANT:  Are fire pits bad for your health?

What do the colors mean on the NFPA diamond?

These color codes help emergency responders know about potential health, fire, and chemical instability issues. The NFPA 704 diamond sign used to display this information has four colored sections: blue, red, yellow, and white. Each section is used to identify a different category of potential hazards.

How do you read a hazard code?

How to Communicate Hazards: Hazard Statements

  1. Each code begins with the Letter “H” for Hazard Statement.
  2. The first number designates the type of hazard the hazard statement is assigned. 2 = physical hazard. 3 = health hazard. 4 = environmental hazard.

How do you read a hazard label?

Hazard ratings range from 0 to 4, with 4 being the most hazardous. These are used for 3 categories: health (blue), flammability (red), and instability (yellow). For example, if the substance has a low risk for flammability, a “1” may appear in the Flammability section.

What do Red Diamonds mean?

Red diamonds color symbolizes passion, power, and ritual. Red diamonds also symbolize form and the ability to be flexible within our form.

What is danger diamond?

0. 0. NFPA 704, also known as a fire diamond, is a diamond-shaped sign or picture that tells people about the hazards of a chemical compound. It was designed in 1960 by the National Fire Protection Association, as a way of quickly telling firefighters and other emergency workers what kind of dangers might be nearby.

Has a flash point below room temperature NFPA diamond?

Flash point below room temperature at 22.8 °C (73 °F). Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, carbon dioxide, iodine, chloroform, DEET). The white “special notice” area can contain several symbols.

IMPORTANT:  What is the best thing to put in a fire pit?