Safety & Emergency Hazardous Materials (HazMat)

Question 1

What does the NFPA 704 diamond's blue quadrant indicate?

Accepted Answer

Health hazard

Answer

The blue (left) quadrant of the NFPA 704 fire diamond indicates health hazard on a scale of 0–4.

Question 2

What does a DOT placard with an orange background and the number 1090 identify?

Accepted Answer

Flammable liquid (acetone)

Answer

UN/NA 1090 is the four-digit identification number for acetone, a flammable liquid displayed with an orange flammable liquids placard.

Question 3

What is the primary reference document used by emergency responders at hazmat scenes?

Accepted Answer

Emergency Response Guidebook (ERG)

Answer

The DOT Emergency Response Guidebook (ERG) provides first responders with initial guidance on hazardous materials identification and safety actions.

Question 4

What does the 'Immediately Dangerous to Life or Health' (IDLH) value represent?

Accepted Answer

A concentration that poses an immediate threat to life or causes irreversible health effects within 30 minutes

Answer

NIOSH defines IDLH as the maximum concentration from which a worker could escape within 30 minutes without irreversible health effects.

Question 5

What is decontamination in a hazmat response?

Accepted Answer

The process of removing or neutralizing contaminants from people, equipment, and the environment

Answer

Decontamination (decon) removes or neutralizes hazardous substances from personnel and equipment to prevent further exposure and contamination spread.

Safety & Emergency Practice Test

Safety & Emergency Practice Test

Safety & Emergency Hazardous Materials (HazMat)