PHTLS Scene Assessment and Safety 4

Question 1

A hazmat placard shows the number 1203. Without a reference guide, what does this indicate?

Accepted Answer

The material is a flammable liquid (gasoline)

Answer

UN placard number 1203 designates gasoline, a flammable liquid requiring specific isolation and approach distances.

Question 2

The Emergency Response Guidebook (ERG) recommends an initial isolation distance for a flammable liquid spill of 330 feet. This distance applies to:

Accepted Answer

All directions around the spill as a minimum safe radius

Answer

ERG isolation distances apply in all directions around the spill, establishing a minimum safe perimeter for all responders.

Question 3

At a trauma scene involving downed electrical wires, the recommended safe distance from the wire is:

Accepted Answer

At least one full span (pole to pole) in all directions

Answer

A downed energized wire can energize the ground over a wide radius; one full span (pole to pole) in all directions is the minimum safe distance.

Question 4

Which statement best describes 'upwind and uphill' positioning at a hazmat scene?

Accepted Answer

It minimizes exposure to toxic vapors that travel downhill and downwind

Answer

Positioning upwind and uphill keeps responders out of the path of toxic vapors and contaminated runoff.

Question 5

A provider is called to an industrial site where workers report dizziness and nausea with no apparent trauma. What scene safety consideration is paramount?

Accepted Answer

Identifying possible toxic inhalation before entering

Answer

Multiple patients with similar symptoms at an industrial site strongly suggests toxic exposure; entry requires hazmat assessment and appropriate PPE.

PHTLS - Prehospital Trauma Life Support Practice Test

PHTLS - Prehospital Trauma Life Support Practice Test

PHTLS Scene Assessment and Safety 4