Firefighter Topics
Hazardous Materials
Hazardous Materials Recognition and Identification
Placards, Labels, and MarkingsAn article about the labels used for hazardous materials packages. Labels that are affixed to the packages play a significant role in this success. The labels alert handlers of the hazards associated with the package contents. When accidents do occur, labels aid in hazard and material identification for an appropriate response to the emergency.
An article about the label accredited by Department of Transportation (DOT).
An article that provides the requirements for hazardous materials placards. Placards affixed to each load alert handlers of the hazards associated with the contents. When accidents occur, placards identify the material so an appropriate response can be undertaken. The U.S. Department of Transportation regulates the handling and shipping of hazardous materials under Title 49 of the United States Code of Federal Regulations (49CFR), which is also known as the Federal Motor Carriers Safety Regulations (FMCSR).
An article about the OSHA standard for DOT markings, labels and placards.
2-page PDF document that describes the nine classes of hazardous materials.
An article that provides the definition of the nine classes of hazardous materials.
An article about the definition of HazMat class 1. HAZMAT Class 1, based on the UNO Hazard Class and Division system, indicates Explosives, which are any substance or article, including a device, which is designed to function by explosion or which, by chemical reaction within itself is able to function in a similar manner even if not designed to function by explosion.
The HAZMAT Class 2 in United States law includes all gases which are compressed and stored for transportation. Class 2 has three divisions: Flammable (also called combustible), Non-Flammable/Non-Poisonous, and Poisonous.
An article about the HAZMAT Class 3 Flammable Liquids. It is about the placards and labeling. A flammable liquid is a liquid with flash point of not more than 60.5°C (141°F), or any material in a liquid phase with a flash point at or above 37.8°C (100°F).
An article about the HAZMAT Class 4 Flammable Solids. It is about the placards for Flammable solids. These are any materials in the solid phase of matter that can readily undergo combustion in the presence of a source of ignition under standard circumstances.
