Term
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Definition
| A heavy stream appliance that is designed to provide a fire stream from above ground level |
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Term
| How are ladder pipes operated? |
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Definition
| Directly by a firefighter @ the top of the aerial ladder or by using guidelines from the ground |
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Term
| What equipment makes up a ladder pipe? |
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Definition
appliance
smooth bore tips
500GPM spray tip
100' of 3"hose w/ 2 1/2" couplings
2 1/2" shut off
4" to 2 1/2" reducer
4" double male
hose straps |
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Term
| Which member is responsible for the placement and/or spotting of the aerial ladder? |
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Definition
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Term
| How far from a ladder pipe operation will an engine spot? |
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Definition
| 100' from the cluster @ the base of the aerial ladder |
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Term
| Who attaches the ladder pipe to the aerial ladder? |
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Definition
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Term
| How is the ladder pipe attached to the aerial ladder? |
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Definition
| locked and strapped with one strap on each end of the appliance |
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Term
| What nozzles are used on a ladder pipe? |
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Definition
Seagrave apparatus uses 600GPM straight tip and the 500GPM fog nozzle
LTI apparatus uses 800GPM (1 3/4)
750GPM turbo master |
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Term
| How is a ladder pipe converted into an improvised standpipe? |
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Definition
| By placing an aerial ladder with ladder pipe attached into an above ground window |
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Term
| If a person is at the top of an aerial ladder during a ladder pipe operation, what should that person not wear? |
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Definition
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Term
| What should be removed from the ladder pipe when using the fog nozzle with a member on the end of the aerial ladder? |
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Definition
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Term
| How many sides should the member at the top of the aerial ladder buckle into during ladder pipe operations? |
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Definition
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Term
| What size safety line(s) are required if a member is on the ladder operating the ladder pipe? |
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Definition
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Term
| What are foam eductors used in conjunction with? |
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Definition
| 5 gallon containers of AFFF (light water) and ATC (alcohol type concentrate) |
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Term
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Definition
| synthetic foam forming liquid used at a ratio of 6 parts concentrate to 94 parts water (fresh or sea) |
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Term
| How many more times effective is light water on open surface gasoline fires than protein type foams? |
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Definition
| more than 3 times as effective |
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Term
| AFFF should not be used on what type of incidents? |
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Definition
| Polar solvents (acetone, methyl ethyl ketone) |
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Term
| How do wet water proportioners work? |
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Definition
| By automatically metering a wetting agent into the fire stream |
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Term
| The wet water proportioner is primarily used on... |
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Definition
| overhaul, especially on shingles, baled goods, and most class A combustibles |
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Term
| What should be done after using a wet water proportioner? |
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Definition
| Flush all lines with fresh water |
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Term
| What do you normally attach a wet water anti-siphon sprayer to? |
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Definition
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Term
| How are distributors normally operated? |
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Definition
| Through holes cut into floors, roofs, docks, etc |
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Term
| How many PSI are normally supplied to the wet water anti-siphon sprayer? |
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Definition
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Term
| The 2 1/2" bresnan distributor is equivalent to what size hose line? |
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Definition
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Term
| How many GPM does a bresnan distributor put out? |
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Definition
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Term
| What are siphon ejectors used for? |
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Definition
| De-watering operations or firefighting operations |
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Term
| Siphon ejector efficiency is mostly regulated by what? |
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Definition
| Pressure in the supply line |
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Term
| What size siphon ejectors does LAFD use? |
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Definition
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Term
| The adjustment wheel on the 2 1/2" siphon ejector should be set where? |
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Definition
| Midway of the scale for pressure of 40 to 60PSI |
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Term
| Portable monitors are similar in manner to what other appliances? |
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Definition
| Wagon batteries and ladder pipes |
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Term
| What sized tips are provided with portable monitors? |
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Definition
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Term
| Where would you find diffusing vanes? |
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Definition
| In the tips of appliances without a barrel |
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Term
| What are the horizontal rotation limits of a portable monitor? |
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Definition
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Term
| How is control of the vertical plane achieved? |
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Definition
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Term
| Where are wagon batteries located? |
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Definition
| Permanently mounted on pumping apparatus |
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Term
| Where should apparatus be spotted for use of wagon batteries on upper floors? |
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Definition
| Far enough away to permit the stream to enter the building at a 30 degree angle |
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Term
| Effectiveness of the wagon battery on upper floors is limited to what height? |
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Definition
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Term
| Approx. what % of the FD's calls involve auto fires? |
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Definition
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Term
| What is the # 1 priority during emergency operations? |
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Definition
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Term
| How should apparatus be spotted at automobile fires? |
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Definition
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Term
| List some additional resources if water supply is inadequate on car fires. |
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Definition
Additional apparatus requests
hydrants
swimming pools/reservoirs
water tank trucks
aerial ladder for improvised standpipe |
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Term
| Which battery cable should be disconnected first during auto fires? |
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Definition
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Term
| What causes an explosion hazard in vehicle batteries? |
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Definition
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Term
| What hazards are associated with auto air conditioners? |
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Definition
Freon gas is under pressure
May emit toxic gases phosgene and fluoride if heated to decomposition |
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Term
| What is the leading cause of engine compartment fires? |
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Definition
Fuel related problems
Fuel line rupture with fuel pump still pumping fuel
Fuel coming into contact with various ignition sources |
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Term
| How are electrical fires in passenger area handled? |
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Definition
| Disconnect electrical power and treat as class A fire |
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Term
| List the hazards associated with upholstery in car fires |
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Definition
Contributes to fire spread
Produces toxic smoke
Provides abundant fire load
Requires extensive overhaul |
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Term
| What hazards are associated with fires in the trunk space? |
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Definition
Trunk/hatch hold open devices may use springs, inert gas piston cylinders that can fail when heated.
Contents in storage areas may involve toxic, flammable, corrosive, or other hazardous materials |
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Term
| What are the features of a hydraulic energy absorbing bumper? |
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Definition
Bumper can travel up to 3"
Gas chamber filled with inert, non flammable gases (nitrogen and helium) pressurized to 150psi
Above chambers separated by floating piston |
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Term
| What are the features of a mechanical energy bumper? |
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Definition
Bumper can travel up to 4"
Heavy spring used to absorb impact |
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Term
| What tool should not be used when working adjacent to car bumpers? |
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Definition
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Term
| Where is safety glass located on an automobile? |
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Definition
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Term
| Removing a gas cap at a car fire can present what hazard? |
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Definition
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Term
| What are some features of gasoline? |
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Definition
Flash point: -45 degrees F
Specific gravity: 0.8
Water soluble: No |
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Term
| What are some features of diesel # 2? |
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Definition
Flash point: 125 degrees F
Specific gravity: less that 1.0
Water soluble: No |
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Term
| What should be considered when mitigating fuel leaks? |
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Definition
Spotting of apparatus (uphill and upwind)
Positioning of equipment
Eliminating ignition sources
Determining location of leak
Containment
Absorption
Dilution |
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Term
| What is the minimum deployment at any auto fire? |
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Definition
| 1 1/2" line and dry chemical extinguisher |
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Term
| Where should the dry chemical extinguisher be positioned during car fires? |
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Definition
| The windward side for personnel protection |
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Term
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Definition
| Explosion resulting from the introduction of oxygen into a confined space that is both pressurized with heated flammable gases and deficient in oxygen |
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Term
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Definition
| Sudden ignition of combustible gases and/or surfaces in an involved area resulting in a sudden and intense rise in temperature. |
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Term
| What does BLEVE stand for? |
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Definition
| Boiling liquid expanding vapor explosion |
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Term
| What are some properties for liquified petroleum gas (LPG) |
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Definition
Heavier than air
Settles in low lying and confined areas
Visible vapor cloud, but can't accurately define flammable area parameters
Vapors can flashover the entire confined area if ignited
Vapor clouds can be dispersed with a fog stream |
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Term
| What is a hazard associated with the plastic used in vehicles? |
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Definition
| The production of toxic gases |
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Term
| What are some hazards with combustible metals during car fires? |
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Definition
| Magnesium combines readily with oxygen |
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Term
| What can water decompose into that will add to the intensity of the fire? |
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Definition
Oxygen and hydrogen
(The released hydrogen adds to the fire's intensity) |
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Term
| CHP has determined that the excessive use of warning lights causes...., especially in drunk drivers |
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Definition
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Term
| The vapor canister in vehicles in usually located where? |
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Definition
The lower, forward portion of the engine compartment
Can also be located in one of the front wheel wells |
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Term
| What are the main causes of tire fires? |
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Definition
| Overheated brakes or under-inflation |
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Term
| What is a problem with tinted windows? |
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Definition
| They can camouflage smoke filled vehicles |
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Term
| Most casulaties (loss of life or property) occur from fires following what type of collisions? |
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Definition
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Term
| What is a tool that can be used to prevent unexpected vehicle movement? |
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Definition
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Term
| What is the effective range for a 20lb dry chem extinguisher? |
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Definition
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Term
| How can backdrafts be avoided in car fires? |
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Definition
| Cross ventilation (break out the windows) |
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Term
| How can the flow of LPG through piping be controlled? |
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Definition
| Close the valves found on the storage cylinder |
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Term
| According to training bulletin 21 (ladder pipe operation), at what degree should the truck be jackknifed from in-line and away from the direction of the ladder extension? |
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Definition
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Term
| How should the hose be laid on the ladder during ladder pipe operations? |
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Definition
| On the rungs centered between the beams |
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Term
| What is the limit on nozzle tip size for ladder pipe operations? |
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Definition
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Term
| What size hose does LAFD use on ladder pipe operations? |
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Definition
| 3" hose with 2 1/2" couplings |
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Term
| What is the maximum climbing angle that a 100' aerial ladder should be at for ladder pipe operations? |
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Definition
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Term
| If a 100' aerial ladder is extended to at least 80', what is the minimum climbing angle? |
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Definition
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Term
| Because ladder pipe operations require such high pressures, where should shut down ideally take place? |
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Definition
| At the pump on the hydrant |
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Term
| At what angle should the ladder obtain before the hose line is loaded? |
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Definition
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Term
| What is the maximum amount of firefighters allowed at the top section of the ladder during ladder pipe ops? |
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Definition
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Term
| At what PSI are solid master stream operated? |
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Definition
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Term
| At what PSI are spray master streams operated |
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Definition
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Term
| What is the typical flow range for master streams? |
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Definition
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