Firefighter Hazardous Materials Response 2 — Questions and Answers
Question 1: What does the orange section of a NFPA 704 diamond placard represent?
- Health hazard
- Flammability
- Instability/reactivity (Correct answer)
- Special hazard
Correct answer: Instability/reactivity
The orange (right) quadrant of the NFPA 704 diamond indicates instability or reactivity.
Question 2: A four-digit number on an orange panel of a transport vehicle identifies what?
- The carrier company
- The UN/NA material ID number (Correct answer)
- The shipment weight
- The destination zone
Correct answer: The UN/NA material ID number
The four-digit number is the UN/NA identification number used to look up the material in the ERG.
Question 3: What is the primary purpose of establishing a decontamination corridor at a hazmat incident?
- To store equipment
- To prevent spread of contaminants from the hot zone (Correct answer)
- To stage apparatus
- To brief the media
Correct answer: To prevent spread of contaminants from the hot zone
The decontamination corridor removes contaminants from personnel and equipment leaving the hot zone.
Question 4: Which control zone is the contaminated area requiring the highest level of PPE?
- Cold zone
- Warm zone
- Hot zone (Correct answer)
- Support zone
Correct answer: Hot zone
The hot zone is the area of immediate contamination requiring maximum protective equipment.
Question 5: What does a DOT placard with the number 3 and a flame symbol indicate?
- Explosives
- Flammable gas
- Flammable liquid (Correct answer)
- Oxidizer
Correct answer: Flammable liquid
Hazard Class 3 with a flame represents flammable liquids.
Question 6: When approaching a hazmat scene, responders should position apparatus how relative to the wind?
- Downwind and downhill
- Upwind and uphill (Correct answer)
- Directly beside the spill
- Downwind and uphill
Correct answer: Upwind and uphill
Positioning upwind and uphill keeps responders away from vapors and runoff.
Question 7: What is the recommended first action upon recognizing a potential hazmat release?
- Enter to rescue victims immediately
- Isolate the area and deny entry (Correct answer)
- Apply water to the substance
- Remove all placards
Correct answer: Isolate the area and deny entry
Isolating the area and denying entry protects responders and the public until the hazard is identified.
Firefighter Hazardous Materials Response 2
What does the orange section of a NFPA 704 diamond placard represent?