Course: BLD 167 Hazardous Waste Operations and Emergency Response

Reading

(1/4)
Hazard Classification System

HAZARD CLASSIFICATION SYSTEM

The hazard class of dangerous goods is indicated either by its class (or division) number or name.  Placards are used to identify the class or division of a material. The hazard class or division number must be displayed in the lower corner of a placard and is required for both primary and subsidiary hazard classes and divisions, if applicable. For other than Class 7 or the OXYGEN placard, text indicating a hazard (for example, “CORROSIVE”) is not required. Text is shown only in the U.S. The hazard class

or division number and subsidiary hazard classes or division numbers placed in parentheses (when applicable), must appear on the shipping document after each proper shipping name.

Class 1 - Explosives

Division 1.1 Explosives with a mass explosion hazard

Division 1.2 Explosives with a projection hazard

Division 1.3 Explosives with predominantly a fire hazard

Division 1.4 Explosives with no significant blast hazard

Division 1.5 Very insensitive explosives with a mass explosion hazard

Division 1.6 Extremely insensitive articles

Class 2 - Gases

Division 2.1 Flammable gases

Division 2.2 Non-flammable, non-toxic* gases

Division 2.3 Toxic* gases

Class 3 - Flammable liquids (and Combustible liquids [U.S.])

Class 4 - Flammable solids; spontaneously combustible materials; and

Dangerous when wet materials/Water-reactive substances

Division 4.1 Flammable solids

Division 4.2 Spontaneously combustible materials

Division 4.3 Water-reactive substances/Dangerous when wet materials

Class 5 - Oxidizing substances and Organic peroxides

Division 5.1 Oxidizing substances

Division 5.2 Organic peroxides

Class 6 - Toxic* substances and Infectious substances

Division 6.1 Toxic*substances

Division 6.2 Infectious substances

Class 7 - Radioactive materials

Class 8 - Corrosive substances

Class 9 - Miscellaneous hazardous materials/Products, Substances or Organisms