Wildland Firefighting for the Structural Firefighter Part II

Continuation

Firefighting in the wildland environment is tough for the structural firefighter, so what can you use that you already have?

As we discussed earlier, we don't have the specialized equipment or gear in order to fight a wildfire like the Forest Service, but we can successfully control the incident using basic tactics and the benefit of high water flows. For instance, take the following scenario.

Situation

You are dispatched to a reported brush fire in a river bottom, which under normal circumstances is dry but filled with soft dirt and thick vegetation. It is often used by indigent people to set up tent cities due to it being secluded and away from the public view. Most often the cause of these fires is unattended camp fires. As you leave the station, you see a large plume of smoke and a helicopter circling around it.

You arrive to find a police officer pointing you back to an area at the end of a long path. The path appears to be soft dirt, but is narrow and stable enough to be able to move the large engine back into the bottoms. The fire is over a large area and is spreading rapidly in dry grass and light winds out of the south west. The driver puts the engine into pump gear and charges the booster reel, a 1" rubber jacketed line about 300' in length.

You grab a pike pole while the other firefighter takes the nozzle and begins knocking the fire away from the road and extinguishes the materials you pull apart with your pike pole.



The nozzle man advances into the burned area in an attempt to keep the fire from spreading (direct attack) while you use the pike pole to pull burning materials away from the fire in and into the burned area. The nozzle man fogs his stream out to suppress a large area. The next engine company establishes a water supply using 5" hose, and connects to a third arriving pumper for a relay operation. The booster lines are ordered to back out and the deck guns on two pumpers pinch the fire between the master streams and cut off it's advance, then the booster reels move in to mop up.

The incident takes longer than anticipated, the ground has been used to dump tree stumps, and several are now hiding the fire within their stacks. A track hoe is called in to bury the stumps and clear the land.

Lessons Learned and Things to Remember

Weather patterns played a major role in fire spread, and coupled with late detection, allowed the fire to spread unchecked. Had the fire not been detected, it could possibly have taken over the whole area.

Knowing what the fire is doing and it's direction of spread played a factor in the placement of equipment and eventually how it was contained. The deployment of master streams allowed the firefighting effort to extend past the reach of booster reels and used enough water to suppress the fire at a distance, reducing crew fatigue.

Radios allowed coordination of the master streams using spotters to guide them in, communication was key in the effort and a lot of information regarding fire spread and extinguishment progress was communicated back to incident commander.

This incident came to a successful conclusion because of communications and teamwork as well as the adaptability of the firefighters to use what was available to contain what could have become a large wildfire.

Wildland Firefighting for the Structural Firefighter Part I

Another re-post

It is not uncommon for a structural firefighter to make a grass fire once or twice a year, but what is supposed to happen when the situation becomes larger? Structural firefighters are faced with a challenge that does not occur that often, and are often ill prepared for. I will attempt to break down some basic wildland concepts so that you will be prepared for your next wildland fire.



There are several immediate differences between structural and wildland firefighters. Standing side by side, the type of protective equipment we use is heavier and more bulky, meant to protect us from high heat inside an enclosed space. If you have fought a wildland fire in structural gear, you know that it reduces your mobility and makes handling lines and doing work that much more difficult. Conversely, the protective equipment worn by wildland firefighters is light and made of lightweight, breathable, all natural materials such as cotton and leather. This is meant for mobility and protection as natural materials have a higher heat resistance than some synthetics. It allows for the wildland firefighter to fight fire on the move, being able to pack up and move quickly to redeploy elsewhere.

Our increased weight does not allow us to be deployed for an extended period of time. The wildland firefighter is equipped for work for days in the forest, carrying all the necessities of life with him in addition to firefighting equipment. Wildland firefighters often carry different tools. A pulaski axe, for example, is both and axe and an adze on a single head, used for both digging and chopping. Smaller hose sizes allow for the wildland firefighter to be able to operate a single line without help, decreasing fatigue.
So what does the structural firefighter need to know in order to safely and effectively handle wildland fires?

The answer is multifaceted.

The US Forest Service has the 10 Standard Firefighting Orders, which are a good basis to start on

1. Keep informed on fire weather conditions and forecasts.
2. Know what your fire is doing at all times.
3. Base all actions on current and expected behavior of the fire.
4. Identify escape routes and safety zones and make them known.
5. Post lookouts when there is possible danger.
6. Be alert. Keep calm. Think clearly. Act decisively.
7. Maintain prompt communications with your forces, your supervisor, and adjoining forces.
8. Give clear instructions and insure they are understood.
9. Maintain control of your forces at all times.
10. Fight fire aggressively, having provided for safety first.

They expanded on these later, creating the 18 Watchout Situations:

1. Fire not scouted and sized up.
2. In country not seen in daylight.
3. Safety zones and escape routes not identified.
4. Unfamiliar with weather and local factors influencing fire behavior.
5. Uninformed on strategy, tactics, and hazards.
6. Instructions and assignments not clear.
7. No communication link with crewmembers/supervisors.
8. Constructing line without safe anchor point.
9. Building fireline downhill with fire below.
10. Attempting frontal assault on fire.
11. Unburned fuel between you and the fire.
12. Cannot see main fire, not in contact with anyone who can.
13. On a hillside where rolling material can ignite fuel below.
14. Weather is getting hotter and drier.
15. Wind increases and/or changes direction.
16. Getting frequent spot fires across line.
17. Terrain and fuels make escape to safety zones difficult.
18. Taking a nap near the fire line.

So how can structural firefighters safely handle wildland fires, even though we are placed at a disadvantage?

Remember what we know about fire already and how to attack it, we will most often be fighting the fire from behind and directly extinguishing burning fuels themselves in a "direct attack." Because of the potential for fire spread, it is not recommended that a direct attack be made form in front of the fire (see #10 of the 18 warning signs) because you could become overwhelmed by the fire front.

 

However there will be occasions where the fire has grown outside of ability to control it directly. While this is rare, it is an option that needs to be considered. An "indirect attack" involves the cutting of fire breaks and lighting a backfire, or creation of spot fires that are then extinguished in the fire's path. Either method allows the fire to burn itself out by consuming all the fuels between the fire break and main fire. In the urban interface this is a last option as it involves equipment we do not readily have on hand such as bulldozers and if a Forest Service or wildland resource management (many states have these in state parks) crew is available they should be contacted for assistance, since this tactic requires specialists as the potential for the backfire to spread is great.
Now that he have discussed a little strategy, in the next installment we will discuss what structural firefighters can do to control the spread of a wildland fire using the equipment they already have available.