Podcast
Questions and Answers
The DOT has classified hazardous materials according to __________________
The DOT has classified hazardous materials according to __________________
Their Primary Danger
Placards are approx ______ " placed on ____________ of ____________ and ________
Placards are approx ______ " placed on ____________ of ____________ and ________
11, all 4 sides, vehicles, large containers
Canadian and United Nations transport also use diamond-shaped placards.
Canadian and United Nations transport also use diamond-shaped placards.
True (A)
What is Class 1?
What is Class 1?
What is the definition of Class 1?
What is the definition of Class 1?
What are the major hazards for Class 1?
What are the major hazards for Class 1?
What is Class 1 Division 1.1?
What is Class 1 Division 1.1?
What is Class 1 Division 1.2?
What is Class 1 Division 1.2?
What is Class 1 Division 1.3?
What is Class 1 Division 1.3?
What is Class 1 Division 1.4?
What is Class 1 Division 1.4?
What is Class 1 Division 1.5?
What is Class 1 Division 1.5?
What is Class 2 about?
What is Class 2 about?
What are the major hazards of Class 2?
What are the major hazards of Class 2?
What is the flammable placard for Class 2?
What is the flammable placard for Class 2?
What is the non-flammable placard for Class 2?
What is the non-flammable placard for Class 2?
What is the oxidizer placard for Class 2?
What is the oxidizer placard for Class 2?
What is the poison gas placard for Class 2?
What is the poison gas placard for Class 2?
What is Class 2.1?
What is Class 2.1?
What is Class 2.2?
What is Class 2.2?
What is Class 2.3?
What is Class 2.3?
What is Class 3?
What is Class 3?
What are the major hazards of Class 3?
What are the major hazards of Class 3?
What is the definition for flammable liquid in Class 3?
What is the definition for flammable liquid in Class 3?
What is the definition for combustible liquid in Class 3?
What is the definition for combustible liquid in Class 3?
What is Class 4?
What is Class 4?
What are the major hazards for Class 4?
What are the major hazards for Class 4?
What is Class 4.1?
What is Class 4.1?
What are the 3 subcategories of Class 4.1?
What are the 3 subcategories of Class 4.1?
What is Class 4.2?
What is Class 4.2?
What are examples of Class 4.2?
What are examples of Class 4.2?
What is Class 4.3?
What is Class 4.3?
What is Class 5?
What is Class 5?
What are the major hazards for Class 5?
What are the major hazards for Class 5?
What is Class 6?
What is Class 6?
What are the major hazards for Class 6?
What are the major hazards for Class 6?
What is Class 7?
What is Class 7?
What are the major hazards of Class 7?
What are the major hazards of Class 7?
What is Class 8?
What is Class 8?
What are the major hazards of Class 8?
What are the major hazards of Class 8?
What is Class 9?
What is Class 9?
What is the definition for Class 9?
What is the definition for Class 9?
What are examples of Class 9?
What are examples of Class 9?
What does ORM-D stand for?
What does ORM-D stand for?
What are examples of ORM-D?
What are examples of ORM-D?
Forbidden materials are prohibited from being offered or accepted for transportation.
Forbidden materials are prohibited from being offered or accepted for transportation.
What are elevated temperature materials?
What are elevated temperature materials?
What is the dangerous placard requirement?
What is the dangerous placard requirement?
What does NFPA 704 represent?
What does NFPA 704 represent?
Study Notes
Hazardous Materials Classification
- DOT classifies hazardous materials based on their primary danger.
- Placards are approximately 11 inches, affixed to all four sides of vehicles and large containers.
Placard Shapes and Uses
- Canadian and United Nations transportation also employ diamond-shaped placards.
Hazard Classes Overview
-
Class 1: Explosives, with definitions including any substance designed to function by explosion.
- Major hazards include thermal and mechanical risks.
- Divided into divisions with specific hazards: 1.1 (mass explosion), 1.2 (projection), 1.3 (fire), 1.4 (minor explosion), 1.5 (mass explosion with low initiation probability), 1.6 (extremely insensitive).
-
Class 2: Gases.
- Major hazards include thermal, asphyxiation, chemical, and mechanical risks.
- Subclasses: 2.1 (flammable gases, e.g., propane), 2.2 (non-flammable gases, e.g., oxygen), 2.3 (poisonous gases, e.g., phosgene), 2.4 (corrosive gases, e.g., anhydrous ammonia).
-
Class 3: Flammable and combustible liquids.
- Definition of flammable: liquids with a flash point no more than 141°F.
- Definition of combustible: liquids with flash points between 142°F and 200°F.
- Major hazards include thermal, asphyxiation, chemical, and mechanical.
-
Class 4: Flammable and combustible solids.
- Major hazards include thermal, chemical, and mechanical.
- Subcategories: 4.1 (flammable solids), 4.2 (spontaneously combustible materials), 4.3 (dangerous when wet materials).
-
Class 5: Oxidizers.
- Major hazards include thermal and mechanical.
- 5.1 indicates oxidizers that may enhance combustion, while 5.2 denotes organic peroxides.
-
Class 6: Poison.
- Major hazards include chemical and thermal.
- Subclasses: 6.1 (toxic materials), 6.2 (infectious substances).
-
Class 7: Radioactive materials.
- Major hazards are radiological.
-
Class 8: Corrosives.
- Major hazards include chemical and thermal risks.
- Defined as materials causing visible destruction upon contact.
-
Class 9: Miscellaneous.
- Represents materials that present hazards during transport but do not fall into other classes.
Special Materials
- ORM-D: Other regulated materials that present minimal hazard due to form, quantity, and packaging, with no assigned placard.
- Forbidden materials: Prohibited from transportation with no placards as they aren't transported.
- Marine pollutants adversely affect aquatic life.
Other Notable Information
- Elevated temperature materials are defined as those transported above specific heat thresholds.
- A dangerous placard applies when the weight exceeds 1001 lbs or indicates a mixed load.
Labels and Standards
- NFPA 704: Fixed site identification system rated from 0 (least) to 4 (most hazardous).
- EPA labels categorize hazards as Caution (minor), Warning (moderate), Danger (highest), and Poison (for highly toxic materials).
- Military placards have specific guidelines distinct from civilian standards.
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Description
This quiz focuses on the classification and recognition of HAZMAT placards and classes as defined by DOT regulations. Test your knowledge with flashcards covering essential information about hazardous materials and their primary dangers. Perfect for those studying or working in hazardous materials handling.
