What is indicated by the number 3 in the blue section 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).
What does a fire rating of 3 mean?
Level 3 – Materials that are easily capable of explosive decomposition, but require an ignition source or will react explosively with water. Page 2. NFPA RATING SYSTEM.
What does a health rating of 3 mean?
Note that ratings 1 and 2 apply to effects that are largely reversible, while ratings 3 and 4 indicate that exposure may cause permanent damage.) FLAMMABILITY. 0. MINIMAL HAZARD This material is normally stable and will not burn unless heated. 1.
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 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.
What does the blue diamond represent on an NFPA container label?
The blue diamond, appearing on the left side of the label, conveys Health Hazard information for persons exposed to the material.
What is NFPA Class A fire rating?
Class A – Flame-spread 0-25, smoke developed 0-450. Class B – Flame-spread 26-75, smoke developed 0-450. Class C – Flame-spread 76-200, smoke developed 0-450. NFPA 101 primarily applies this classification to interior wall and ceiling finish materials.
What are the 3 main classifications of fire rated walls?
There are three main classifications of fire rated walls: fire walls, fire barriers, and fire partitions.
What does C s3 d2 mean?
C – s3 d2. Definition. Combustible materials: Medium contribution to fire.
What do the hazard colors mean?
Symbols. 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 the R stand for in ERG?
Response. Emergency Response Guide. What does the R stand for in ERG? Safety of responders.
What do the numbers on a hazard label represent?
On every NFPA label, there should be a number from zero to four inside the blue, red and yellow areas. The numbers indicate the degree of a particular hazard. The substance is a severe health risk if the substance is not handled safely.
What does a blue placard mean?
Yellow placards indicate the material is an oxidizer; Blue placards indicate the material is dangerous when wet; White placards indicate the material is an inhalation hazard and/or poison; … White placards with black stripes indicate miscellaneous hazardous materials.
What does the Blue Diamond mean in chemistry?
Fire diamonds located on tanks and buildings indicate the level of chemical hazard located there. The four colors are blue, red, yellow, and white. … A four in the blue means severe and immediate health effects, including death, and a one time exposure can cause lasting health problems.