PERG DOT ERG Background

Time: 6pm
Local Weather: Dry fall afternoon with a strong wind blowing NNW.


Centerville is a community of 25,000 people and is located approximately 60 miles from the nearest major city.

There are two pipelines running through this town. A liquid pipeline runs along the East side and a natural gas line along the West. There is also a gas transmission line that runs through an area that has been developed into a retail and food Super Mart.

There is a daycare, residential homes and a metal fastening facility located in close proximity to the gas transmission line. The metal fastening facility is open and operating 24 hours a day. Within 1,000 feet of the gas transmission line you will also find a small shopping mall, gas station, additional residential homes and a major corporate facility.


The Centerville Fire Department is a combination fire department with career and volunteer responders. The fire department’s first response to this call will include two engines, a ladder truck, a chief officer and a medic. The personnel will include 15 members on scene and a chief officer. Several volunteers may respond in their own vehicles.

The total response team for the community will include 3 chief officers, 4 engines, 2 ladders, 2 medics and 50 to 75 personnel.

Mutual Aid will also respond with 5 engines, 2 tower ladders, and 5 medics within 1 Hour.


Centerville law enforcement consists of 20 officers from the local police force. There were 2 officers on duty at the time of the event. There are 2 county sheriffs in the area and 10 additional men who can be provided within 1 hour according to the Emergency Response Plan. The local police officer is on the scene shortly after the incident and a second law enforcement officer is on the way. Call back will take 1 to 2 hours to get 10 more officers.

Background ^
Scenarios Home « Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next »

IntroductionProceed »

Scenario Map

Use the tabs on the left to learn important information you will need when responding to this scenario.

When you are ready click "Proceed".

Rolloverto see images.

Proceed »

Fire Response - Vehicle Placement

Where would you place Staging and Incident Command?
On the map, drag and place the fire and police icons where you think they should position for this emergency.

Check Answers

Initial Response GuidelinesProceed »

Evacuation Priorities

Acting as the Incident Commander which occupancy should be evacuated first and which should be evacuated last?

Drag each number to a location in the order in which you believe they should be evacuated using #1 as the most important and #5 as the least important. When you are ready, click Check Answers.

Evacuation Priorities

PPE Selection

What is the appropriate PPE to wear when evacuating the primary facility?

Choose one level of protective clothing and one level of respiratory protection.

Identifying Pipeline Markers

Drag each circle to the correct answer.

Who owns the pipeline?

What is the product?

Which telephone number should you call to acquire more information regarding this release?

Proceed »

Indications of a Natural Gas Release

Check all clues below that you would use to support your decision that the product being released is natural gas.

Determining Hazard Zones (No Meter)

Select a initial isolation Hazard Zone.

Determinig Hazard Zones (No Meter)

What do you do next?

Clickfor more information.

Assessing Hazards (with a meter)

Potential Ignition Sources

After everyone has been evacuated and accounted for – you are waiting for the gas/utility company to arrive.

Click on what could be an ignition source at the line break.

Managing the Incident

As the first responder on the scene there are many tactical opportunities that are Applicable(A) others are Not Applicable (NA).

Examine the listed tactics and click whether they are “A” – Applicable or “NA” - Not Applicable. When you are done click on Check Answers.



Protect Exposures

Use some form of Vapor Suppression System to extinguish the fire

Try to control the release (i.e. Shut the Valve)

Backing up to a safe position and doing nothing

Climb in the excavation and try and stop the release

Call the local airport for their CFR truck

Locate Industrial Size Dry Chemical Extinguishers

Let the fire burn out with no involvement

Notify proper authorities that ignition occurred

Fight the fire


Training Scenario #2 - Transmission Line Break with Major Public Safety Issues