Propane Certification Propane Certification Emergency Procedures 1 — Questions and Answers
Question 1: If propane is detected leaking from a container and cannot be stopped, what is the FIRST action a technician should take?
- Evacuate the area and call emergency services (Correct answer)
- Attempt to repair the leak immediately
- Cover the container with a tarp
- Increase ventilation by opening windows
Correct answer: Evacuate the area and call emergency services
The immediate priority is to evacuate all persons from the danger zone and call 911 or emergency services before attempting any repairs.
Question 2: What is the correct action when a propane odor is detected inside a structure?
- Leave immediately without operating any electrical switches (Correct answer)
- Open the gas valve to purge the lines
- Turn on fans to ventilate the building
- Call the gas company from inside the building
Correct answer: Leave immediately without operating any electrical switches
Occupants must leave the building without activating any electrical switches, as even a small spark can ignite accumulated propane vapor.
Question 3: A propane BLEVE (Boiling Liquid Expanding Vapor Explosion) is most likely to occur under which condition?
- When a container is exposed to external fire while liquid is still present (Correct answer)
- When a container is overfilled beyond 85% capacity
- When vapor pressure exceeds 200 psi during normal operation
- When a container is stored below freezing temperatures
Correct answer: When a container is exposed to external fire while liquid is still present
A BLEVE occurs when an external fire heats the container faster than the relief valve can vent, causing catastrophic failure while liquid propane is still inside.
Question 4: When responding to a propane leak at a customer site, how far should the initial evacuation perimeter extend at minimum?
- At least 300 feet in all directions (Correct answer)
- 10 feet from the container
- 50 feet from the container
- The entire block
Correct answer: At least 300 feet in all directions
Emergency response guidelines recommend an initial evacuation of at least 300 feet in all directions until the situation is assessed by responders.
Question 5: If a propane tank is on fire and cannot be extinguished, the safest firefighting strategy is to:
- Cool the container with water while withdrawing to a safe distance (Correct answer)
- Attempt to close the tank valve immediately
- Use a CO2 extinguisher directly on the flame
- Bury the container with soil to smother the fire
Correct answer: Cool the container with water while withdrawing to a safe distance
Applying water to cool the container prevents pressure buildup that could cause a BLEVE, while firefighters maintain a safe withdrawal distance.
Question 6: What does the acronym PASS stand for when using a fire extinguisher during a propane emergency?
- Pull, Aim, Squeeze, Sweep (Correct answer)
- Protect, Alert, Spray, Secure
- Position, Aim, Stop, Stand
- Pull, Approach, Spray, Sweep
Correct answer: Pull, Aim, Squeeze, Sweep
PASS stands for Pull the pin, Aim at the base of the fire, Squeeze the handle, and Sweep side to side.
Propane Certification Propane Certification Emergency Procedures 1
If propane is detected leaking from a container and cannot be stopped, what is the FIRST action a technician should take?