HAZMAT Classes Flashcards

Questions and Answers

In the US, it is called _______

HAZMAT

In Canada, it is called _________

Dangerous Goods

DOT covers how many hazard classes?

___________ is a destructive device, expulsive, incendiary, or poison gas bomb, grenade rocket with more than four ounces, missile have an explosion or incendiary charge of more than one quarter ounce (7 grams)

WMD Signup and view all the answers

What is the EPA definition of toxic chemicals?

Chemicals whose total emissions or releases must be reported annually by owners and operators of certain facilities that manufacture, process, or otherwise use listed toxic chemicals. Signup and view all the answers

In the UN model codes and regulations, hazardous materials are called what?

Dangerous Goods Signup and view all the answers

What are the nine transportation hazard classes?

Class 1: Explosives, Class 2: Gas, Class 3: Flammable Liquid, Class 4: Flammable Solid, Class 5: Oxidizer, Class 6: Poisons, Class 7: Radioactive materials, Class 8: Corrosives, Class 9: Miscellaneous hazardous materials Signup and view all the answers

What are the six divisions of Class 1?

Division 1.1: Mass Explosion Hazard, Division 1.2: Projection Hazard, but not mass explosion hazard, Division 1.3: Fire Hazard, Division 1.4: Minor Explosion Hazard, Division 1.5: Mass Explosion Hazard but with little probability of inhalation/ blasting agent, Division 1.6: Insensitive articles with no explosion hazard Signup and view all the answers

What are the Class 2 Divisions?

Division 2.1: Flammable Gas, Division 2.2: Nonflammable non-poisonous gas, Division 2.3: Gas that is poisonous by inhalation Signup and view all the answers

What are the Class 3 Divisions?

Flammable, Gasoline, Combustible, fuel oil Signup and view all the answers

What are the Class 4 Divisions?

Division 4.1: Flammable solid, Division 4.2: Spontaneous combustible, Division 4.3: Dangerous when wet Signup and view all the answers

What are the Class 5 Divisions?

Division 5.1: Oxidizer, Division 5.2: Organic peroxide Signup and view all the answers

What are the Class 6 Divisions?

Division 6.1: Poisonous material, Division 6.2: Infectious substances Signup and view all the answers

____________ is any material containing radionuclides where both the activity concentration and the total activity in the compound exceed specified values

Radioactive materials Signup and view all the answers

____________ is a liquid or solid that causes full thickness destruction of skin at the site of contact within a specified period of time

Corrosive materials Signup and view all the answers

________ is a material that presents a hazard during transport, but it is not molded into another hazard class

Miscellaneous Hazardous Materials Signup and view all the answers

___________ is a material that presents a hazard during transportation due to its form, quantity, and packaging

Other Regulated Material Signup and view all the answers

What is the difference between class and division?

Class is the overall category of the material, division is the subcategory of the class. Signup and view all the answers

How many divisions are within DOT Class 1?

Six divisions Signup and view all the answers

Can mixed loads of hazardous materials be marked?

False Signup and view all the answers

Where are common places to find hazardous materials?

Gas and service stations, fuel storage stations, feed/farm stores, residential areas, laboratories in educational facilities Signup and view all the answers

What is a common place for HAZMAT incidents?

Port facilities, railway bridges and trestles, during floods Signup and view all the answers

At the awareness level, personnel are supposed to _____________

recognize and identify hazardous materials/WMD, initiate protective actions, notify personnel Signup and view all the answers

_________________ is defined by NFPA 1072, Matter (solid, liquid, or gas) or energy that when released can create harm to people, the environment, and property, including weapons of mass destruction (WMD)

Hazardous materials Signup and view all the answers

Study Notes

Introduction to HAZMAT

In the U.S., hazardous materials are referred to as HAZMAT.
In Canada, they are classified as Dangerous Goods.

Hazard Classes and Definitions

The U.S. Department of Transportation (DOT) categorizes hazardous materials into nine classes.
A weapon of mass destruction (WMD) includes explosive devices that exceed specific weight or charge limits.
The Environmental Protection Agency (EPA) mandates annual reporting of toxic chemical emissions from specified facilities.

UN and DOT Classifications

In United Nations regulations, hazardous materials are also termed Dangerous Goods.
The nine transportation hazard classes encompass:
- Class 1: Explosives
- Class 2: Gases
- Class 3: Flammable Liquids
- Class 4: Flammable Solids
- Class 5: Oxidizers
- Class 6: Poisons
- Class 7: Radioactive materials
- Class 8: Corrosives
- Class 9: Miscellaneous hazardous materials

Class 1 - Explosives Divisions

Division 1.1: Mass Explosion Hazard
Division 1.2: Projection Hazard without mass explosion risk
Division 1.3: Fire Hazard
Division 1.4: Minor Explosion Hazard
Division 1.5: Low probability mass explosion hazard (blasting agent)
Division 1.6: Insensitive articles with no explosion risk

Class 2 - Gases Divisions

Division 2.1: Flammable Gas (boiling point ≤ 68°F or 20°C)
Division 2.2: Nonflammable, non-poisonous gases (asphyxiants, oxidizers)
Division 2.3: Poisonous gases by inhalation

Class 3 - Flammable Liquids

Flammable liquids encompass materials like gasoline and combustible oils.

Class 4 - Flammable Solids Divisions

Division 4.1: Flammable solids (includes wetted explosives, self-reactive materials)
Division 4.2: Spontaneously combustible materials
Division 4.3: Dangerous when wet, reactive with water

Class 5 - Oxidizers and Peroxides

Division 5.1: Oxidizers that enhance combustion
Division 5.2: Organic peroxides containing oxygen in bivalent form

Class 6 - Poisons Divisions

Division 6.1: Poisonous materials
Division 6.2: Infectious substances

Class 7 - Radioactive Materials

Defined as materials with radionuclides exceeding specific activity concentrations.

Class 8 - Corrosives

Corrosive materials cause full-thickness skin destruction upon contact.

Class 9 - Miscellaneous Hazardous Materials

Includes materials that pose transport hazards but don’t fit into other classes.

Other Classification Concepts

Other Regulated Materials are defined as materials presenting hazards based on form, quantity, or packaging.
Class refers to the primary category, while division represents its subcategory.

Regulations and Awareness

DOT Class 1 has six specified divisions.
Mixed loads of hazardous materials cannot be marked for transport.
Common locations for hazardous materials include gas stations, residential areas, and laboratories.
HAZMAT incidents commonly occur at port facilities and during floods.
Personnel at the awareness level must recognize hazards, initiate protective actions, and notify relevant personnel.

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Description

Test your knowledge on the 9 classes of HAZMAT with these engaging flashcards. Each card provides definitions and key terms specific to hazardous materials and their classifications in the US and Canada. Perfect for students and professionals in safety and environmental studies.