A strike-out W (W), for when the chemical reacts with water. OX, for when the chemical is an oxidizer. COR, for when the chemical is corrosive.
What does the W with a line through it mean NFPA?
W, indicates unusual reactivity with water and is a caution about the. use of water in either firefighting or spill control response. OX, indicates that the material is an oxidizer.
What is being indicated by the letter W with black band in the NFPA symbol?
W – The W symbol indicates that the chemical being labeled has a strong reaction to water. Chemicals like potassium, magnesium, rubidium, and cesium that will explode, burn, or give off dangerous gases when exposed to water have this symbol.
What is full form of NFPA?
National Fire Protection Association (NFPA) is a United States trade association established in 1896, is to reduce the worldwide burden of fire and other hazards on the quality of life by providing and advocating consensus codes and standards, research, training, and education.
How do you read a hazard code?
How to Communicate Hazards: Hazard Statements
- Each code begins with the Letter “H” for Hazard Statement.
- The first number designates the type of hazard the hazard statement is assigned. 2 = physical hazard. 3 = health hazard. 4 = environmental hazard.
What do the colors on the NFPA mean?
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 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 …
What is a NFPA label?
NFPA 704 rating system is a standard system developed by the U.S.-based National Fire Protection Association (NFPA) for indicating the health, flammability, reactivity and special hazards for many hazardous chemicals through the use of the NFPA 704 Diamond.
What is HFR rating?
HMIS III (Hazardous Materials Identification System) is a rating system developed by the American Coatings Association, which categorizes a chemical from 0 (low hazard) to 4 (high hazard). Four areas are categorized based on health, flammability and physical hazards, as well as personal protection.