200 series p 500-635 Flashcards
if tank water is not enough to fight a car fire what should be done
If the water carried on the responding apparatus will not be sufficient, early considerations must be given to additional water supply sources. A supply line or other engines/tenders may be required. Ladder companies may be used as an improvised standpipe at incidents on elevated freeways or parking garages
What hose line should be used for a car fire
The minimum size of hoseline is the 1-1/2” hand line
if the LPG tank has ignited in a car fire what should be done
If vapors escaping from the storage tank relief valve have ignited, allow the LPG/LNG to burn while protecting exposures and cooling the tank. Flow of gas through piping can be controlled by shutting off the valve at the storage tank or emergency shut-off valve
how far have Energy Absorbing Bumpers been known to travel when released from vehicle
Bumper assemblies have been known to travel 25 feet
how do we address combustible metals in a car fire
When these metals are burning, attempts to extinguish them with water will usually add to the intensity of the fire. Large quantities of water, however, will cool the metal below its ignition temperature. After some initial intensification, the fire should go out. Dry chemical extinguishers can also be effective
what hazards are associated with a tire fire
Exposure hazards associated with the smoke plume, water runoff, and soil include: • Volatile organic chemicals • Polynuclear aromatic hydrocarbons • Carbon monoxide • Heavy metals
how is a tire fire dispatched
It is recommended that major tire fires be handled as hazardous materials incidents. The incident taker will obtain all available information from the caller to determine what’s on fire. A hazardous 2-1 will be dispatched if it is determined that a tire pile is on fire
what are the three stages of a tire fire
Incipient
• Free burning
• Smoldering
when is the incipient stage of a tire fire and how is it controlled
The incipient stage of a tire fire begins with a point of ignition. Once a tire has gained an open flame front, the heat of the fire is absorbed by the surrounding tire material. Immediately separating the burning tire from the rest of the pile and/or applying water and foam could eliminate the threat to the remaining tires
what is to be expected during the free burning stage of a tire fire
During the free burning stage, fire spreads quickly and there is a dramatic increase in smoke and heat. Use of water in this stage of a tire fire could increase the products of incomplete combustion like carbon monoxide and particulate matter. The cooled tires may continue to pyrolize, producing large quantities of oil
when does the smoldering phase begin in a tire fire and what are the hazards
A crust may form over the pile while internal temperatures reach about 2,000 degrees Fahrenheit. The smoldering stage has begun.Oil not consumed by the fire may leach into the soil, pool, and begin to flow under the pile. Heat from the fire could ignite the oil, resulting in a three-dimensional fire. Products of incomplete combustion continue to be a health hazard
Initial size-up at a tire fire must evaluate the emergency in terms of:
- Personnel safety
- Public health
- Environmental impact
- Threatened exposures
- Extent of fire
- Need for additional resources, including PIO
what needs to be deconned at a tire fire
The Incident Commander will establish a decontamination sector for all personnel leaving the fire area. All protective clothing, fire fighting equipment, and apparatus will need to be decontaminated as well
Areas of concern in a tire fire will include:
- Life safety
- Proximity of wild-lands
- Potential toxic run-off
- Bodies of water
- Smoke plume
- Wind direction/speed
Important tactical considerations in a tire fire should include:
• Life safety • Protecting exposures • Isolating burning tires • Use of heavy equipment • Overhead or underground utilities *Immediate evacuation of civilians at the incident scene is a high priority
What are the three options for fighting a tire fire
Burn it
Bury it
Drown it
What are the benefits to letting a tire fire burn
Letting a tire pile burn has its merits. Soil and water pollution may be drastically reduced when many of the products of combustion go up in smoke. The clean up costs can be reduced when compared to other options. Importantly, the fire service must manage and control the burn. Protecting exposures and separating tires from the burn area will continue to be a tactical priority
What are benefits to burying a tire fire
The decision to bury a tire pile also has merits. Sand, cement dust, quick lime, and crushed coral rock are all high in calcium content. Calcium scrubs sulfur from the emissions, creating calcium sulfate or gypsum. The “bury it strategy” could be employed in areas that have minimal water supply or in areas that are densely populated. The decision to bury a tire fire would take into consideration reducing toxic smoke for the sake of public health
What are the cons to burying a tire fire
Geological considerations play an important role in the bury it strategy. While the tire fire is entombed, fires can still pyrolize and push toxic oil into the soil and underground water sources. Burying a tire fire that is on top of clay soils may delay the oil from filtering to underground water supplies. To determine the release of pyrolitic oil, check down gradient from the pile for contamination
Drawbacks to the “drown it strategy” include
- An increase in the toxic air emissions as the fire is cooled causing the combustion process to slow down.
• An inordinate amount of water run-off combined with pyrolitic oil will be the result of trying to drown out a fire
*Handlines alone cannot reach the interior spaces of a tire fire
How is clean up of a tire done
Unlike traditional structural fires or wildland fires, clean-up on tire fires will, in all probability, be turned over to an appropriate environmental protection agency
What is the difference between a multi patient incident/ mass casualty/ and a disaster
a “multi-patient incident” is defined as any incident with fewer than 25 patients.
A “mass casualty incident” is defined as any incident involving 25 to 100 patients.
A “disaster” is defined as any incident involving more than 100 patients
The General Tactical objectives, for a large scale ems call listed in order of priority, are
- Remove endangered occupants and treat the injured.
- Stabilize the incident and provide for life safety.
- Ensure the functions of triage, extrication, treatment and transportation are established.
- Provide for the safety, accountability and welfare of rescue members and victims.
- Conserve property
the EMS Tactical objectives to be completed during any multipatient/mass casualty, disaster incident include:
- Completion of a “Triage Report”
2. Declaration of “All IMMEDIATES Transported