HazMat Hazardous Materials (HazMat) Endorsement Awareness 4 — Questions and Answers
Question 1: If the words 'Inhalation Hazard' appear on a shipping paper, which placard must always be displayed regardless of quantity?
- Flammable
- Corrosive
- Poison Inhalation Hazard (Correct answer)
- Toxic
Correct answer: Poison Inhalation Hazard
Any material identified as an inhalation hazard (Zone A, B, C, or D) requires the 'Poison Inhalation Hazard' placard regardless of the quantity being transported.
Question 2: What information is NOT required on a basic HazMat shipping paper entry?
- Proper shipping name
- Driver's CDL number (Correct answer)
- Hazard class or division
- Quantity and type of packaging
Correct answer: Driver's CDL number
The driver's CDL number is not part of the required HazMat shipping paper entry; the required elements are the UN/NA number, proper shipping name, hazard class, packing group, and quantity.
Question 3: A tanker displaying a four-digit number inside an orange panel is using which identification system?
- NFPA 704 System
- DOT ERG System
- UN/NA Identification Number System (Correct answer)
- GHS Pictogram System
Correct answer: UN/NA Identification Number System
Orange panels with four-digit UN/NA identification numbers are used on bulk tanks to identify the specific hazardous material inside, allowing emergency responders to consult the ERG.
Question 4: Under HazMat rules, a driver must check tires on a vehicle transporting hazardous materials:
- Only at the origin terminal
- At the start of each trip and at least once during the trip (Correct answer)
- Every 50 miles during transit
- Only when a warning light activates
Correct answer: At the start of each trip and at least once during the trip
HazMat regulations require the driver to examine tires at the start of the trip and at least once during the trip to catch flats, overheating, or other defects.
Question 5: Which of the following is an example of a Division 6.1 material?
- Acetylene
- Arsenic trioxide (Correct answer)
- Sodium hydroxide
- Ammonium nitrate
Correct answer: Arsenic trioxide
Division 6.1 covers toxic (poisonous) materials; arsenic trioxide is a classic example, while the others are classified as flammable gas, corrosive, and oxidizer respectively.
Question 6: What does the 'Z' suffix on a proper shipping name (e.g., 'Flammable liquid, n.o.s. (Z)') indicate?
- The material is at zero pressure
- It is a marine pollutant
- The material is a severe marine pollutant (Correct answer)
- It is exempt from HazMat regulations
Correct answer: The material is a severe marine pollutant
A 'Z' suffix following a proper shipping name designates the material as a severe marine pollutant under DOT regulations, requiring special notation.
Question 7: During a routine stop, a HazMat driver notices the temperature of the cargo area feels unusually hot. What should the driver do?
- Open the doors immediately to ventilate
- Continue driving to reach the destination faster
- Park away from people and structures, do not open doors, and call for help (Correct answer)
- Apply water to the outside of the trailer to cool it
Correct answer: Park away from people and structures, do not open doors, and call for help
An unusually hot cargo area may indicate a fire or chemical reaction; the driver should park at a safe distance from people and structures, avoid opening the doors, and immediately call emergency services.
HazMat Hazardous Materials (HazMat) Endorsement Awareness 4
If the words 'Inhalation Hazard' appear on a shipping paper, which placard must always be displayed regardless of quantity?