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737 Cards in this Set
- Front
- Back
When shall a firefighter ride on the outside of a moving apparatus? |
Never |
|
The standard specifies for minimum pump capacity of what with how large of a tank? |
750 GPM 300 gallons |
|
Pump capacities larger than 750 GPMs increase in increments of what? |
250 GPM |
|
Most municipal fire departments have pumpers capable of what? |
2,000 GPMs or less |
|
Large onboard tank of foam concentrate often contains how many gallons of foam concentrate? |
500 gallons or more |
|
Both municipal or industrial foam pumpers may be equipped between what flow capacity? |
750-3,000 GPM |
|
Most municipal fire departments have foam tanks ranging between what? |
20-100 gallons |
|
The articulating or telescoping devices most commonly combined with pumpers range in height between what? |
50-75 feet |
|
Mobile water supply apparatus are equipped with a tank capacity of at least how many gallons? |
1,000 gallons |
|
Specially designed woodland apparatus are often mounted on how big of chassis? |
One ton or larger |
|
Brush trucks, brush breakers, booster apparatus vehicles often have water tank capacities of how many gallons? |
500 gallons |
|
Standard on Fire Department Occupational Safety and Health Program |
NFPA 1500 |
|
What is used to extinguish small fires and hot spots as the vehicle advances through short vegetation? |
Ground sweep nozzles |
|
What is used to extinguish small fires and hot spots as the vehicle advances through short vegetation? |
Ground sweep nozzles |
|
Wildland Fire Fighting for Structural Firefighters |
NFPA 1906 |
|
Some fire boats have capacities as high as how many GPMs? |
50,000 GPM |
|
Some fire boats have capacities as high as how many GPMs? |
50,000 GPM |
|
Individual master streams on fire boats have the capacity of discharging how many GPMs? |
10,000 GPMs |
|
A Quint vehicle must be equipped with a capacity of what with what size tank? |
1,000 GPMs 300 gallons |
|
A Quint vehicle must be equipped with a capacity of what with what size tank? |
1,000 GPMs 300 gallons |
|
Long term pumping operations involving fires at petroleum storage facilities or landfills may be suitable for what kind of pump? |
Trailer mounted fire pumps |
|
What is used to convert a vehicles 12 or 24 volt DC current into 110-220 Volt AC current? |
Inverter |
|
Inverters are usually used to power vehicle mounted what? |
Flood lights |
|
What is used to convert a vehicles 12 or 24 volt DC current into 110-220 Volt AC current? |
Inverter |
|
Inverters are usually used to power vehicle mounted what? |
Flood lights |
|
Portable generators have up to how much capacity? |
5,000 Watts |
|
What is used to convert a vehicles 12 or 24 volt DC current into 110-220 Volt AC current? |
Inverter |
|
Inverters are usually used to power vehicle mounted what? |
Flood lights |
|
Portable generators have up to how much capacity? |
5,000 Watts |
|
Vehicle mounted generators have up to how much capacity? |
12,000 watts |
|
Inverters are usually used to power vehicle mounted what? |
Flood lights |
|
Vehicle mounted generators have up to how much capacity? |
12,000 watts |
|
Rescue apparatus or other specialized units may feature a fixed generator system with capacities of how much? |
50,000 watts or greater |
|
The lighting equipment carried on apparatus may be portable or fixed and have capacities between what? |
300-1,000 watts |
|
Some apparatus have banks of lights mounted on booms that are powered by electric, pneumatic, or hydraulic systems, where these installations have a capacity between what per light? |
500-1,500 watts per light |
|
A new vehicle should be washed frequently using cold water to harden the paint and keep it from spotting for the first how many months? |
6 months |
|
To clean automotive glass, what should you use? |
Warm soapy water or commercial glass cleaner |
|
How long should you wait to apply wax and polish to a new apparatus? |
6 months |
|
The driver/operator begins the walk around inspection beginning on what side of the apparatus? |
Driver’s door then clockwise |
|
Tire selections for fire apparatus are based on what? |
GAWR Gross Axle Weight Ratings |
|
NFPA 1911 requires that all tires be replaced every how many years regardless of condition? |
7 years |
|
This turns on various lights at specific intervals so that the startup electrical load for all devices does not occur at the same time. |
Load Sequencer |
|
This monitors the electrical system for any added electrical loads that threaten to overload the system. |
Load monitor |
|
This monitors the electrical system for any added electrical loads that threaten to overload the system. |
Load monitor |
|
If an overload condition occurs, the load monitor will shut down less important electrical equipment in order to prevent overload. What is this called? |
Load shedding |
|
What causes harsh shifting, gear clashing, and damage to the gear teeth? |
Excessive free play in the clutch causing the clutch not to fully release |
|
A steering wheel should be no more than approximately how many degrees in either direction? |
10 degrees |
|
On a 20 inch diameter steering wheel, the play may be about how many inches in either direction? |
2 inches |
|
Who determines the GVWR as the maximum weight at which a vehicle can safely be operated? |
The manufacturer |
|
NFPA 1911 states that a side to side variance in weight should not exceed how much in percentage? |
7% |
|
Federal, state, and provincial laws may dictate how and when what is tested? |
Brakes |
|
Apparatus with air brakes are to be equipped with an air pressure protection valve that prevents air horns or other things from being operated when the pressure in the air reservoir drops below what pressure? |
80 psi |
|
Apparatus brakes should be thoroughly tested how often? |
Annually |
|
Most engine compartment checks should not be done when the vehicle is? |
Running |
|
DEF is stored in a tank downstream of the DPF and is injected into the gas in order to reduce what emissions from the Diesel engines? |
Nitrogen Oxide |
|
Most modern truck batteries are? |
Maintenance free |
|
Older apparatus may still have batteries that require additional what to replenish the cell’s fluid as it evaporates over time? |
Distilled water |
|
Most automotive batteries contain what? |
Lead Sulfuric acid |
|
Batteries can also give off what type of gas that is flammable? |
Hydrogen gas |
|
Standard for Fire Apparatus Driver/Operator Professional Qualifications |
NFPA 1002 |
|
Most driving regulations pertain not what type of conditions? |
Dry, clear roads during daylight conditions |
|
Driving under the influence of alcohol is considered? |
Gross negligence |
|
Driving under the influence of alcohol is considered? |
Gross negligence |
|
What is the loss of braking function which occurs due to excessive use of the brakes? |
Brake fade |
|
According to SAE, it was determined what percentage of all collisions the operator was not aware of a problem until it was too late? |
42% |
|
For safety reasons, many manufacturers of apparatuses recommend that the pump tanks be what during driving operations? |
Full or empty |
|
What type of apparatus has been built by embers of the fire department or locals mechanics, overloaded vehicles and most likely to have design problems? These vehicles are often built on government surplus or other used chassis that may be well worn even before conversion and usually top heavy after being retrofitted. |
Homebuilt apparatus |
|
Per NFPA1500 you must don fire gear before entering an apparatus with the exception of what? |
Helmets |
|
Per NFPA1500 you must don fire gear before entering an apparatus with the exception of what? |
Helmets |
|
When loading hose, drive apparatus in forward direction, straddling or to one side of the hose at a speed no greater than what? |
5 mph |
|
A tiller operator and/or instructor must wear what if not in an enclosed area? |
Helmet Eye protection |
|
What action wastes fuel and may lead to the buildup of carbon injectors, valves, pistons and many cause damages to internal engine components and emission systems? |
Allowing Diesel engine to idle |
|
What year did the start equipping engines with DPF? |
2007 |
|
Can park regeneration be used during pumping operations? |
No |
|
What can cause a debate to the apparatus engine, or limit the vehicle speed of approximately only 5 mph? |
Failure to fill the DEF tank |
|
A driver should never shut down an engine immediately after a full load operation or when the temperature gauge indicates that the engine is overheated. A hot engine should cool to normal operating temperature in idling time in how many minutes? |
3-5 minutes |
|
What action will cut off fuel flow from the injectors and create fuel pressure that can build up behind the shutoff valve and prevent the valve from opening? |
Shutting down the engine while it is in motion |
|
Some jurisdictions recommend to manually shift an apparatus with an automatic transmission in order to do what? |
Extend brake life |
|
Angle formed by level ground and a line form the point where the front tires touch the ground to the lowest projection at the front of apparatus? |
Angle of approach |
|
Angle formed by level ground and a line from the point where the rear tires touch the ground to the lowest projection at the rear of apparatus? |
Angle of departure |
|
Angle formed by level ground and a line form the point where the rear tires touch the ground to the bottom of the frame at the wheelbase midpoint? |
Breakover angle |
|
Weight of the apparatus after loading it with all the equipment and personnel must have an axle loading balance percentage of what from side to side and writhing axel wight rating front to back? |
7% |
|
To prevent engine damage, limit the downhill speed to lower than maximum what? |
RPMs |
|
Process of injecting or supplying the Diesel engine with more fuel that can be burned is what? |
Overthrottling |
|
What occurs when the throttle is applied when a main yak transmission is in too high of a gear for the demand on the engine? |
Engine lugging |
|
How many times greater distance does it take a vehicle to come to a stop on snow and ice than on dry pavement? |
3-15 times greater distance |
|
At what speeds does an emergency vehicle outrun the effective range of its audible warning device? |
50 mph |
|
Increasing the speed of a vehicle by 200 mph can decrease the audible distance by how many feet? |
250 feet or more |
|
When more than one emergency vehicle are responding on the same route, they should travel at least how many feet apart? |
300 - 500 feet |
|
Some jurisdictions equipped apparatus with what color warning lights to illuminate the trim worn by firefighters? |
Yellow warning lights |
|
In strobe light preemptive devices, what color light mounted on traffic pole indicates that the signal has been received and a green light is forth coming? |
White light |
|
In strobe light preemptive devices, what color light mounted on traffic pole indicates that the signal has been received and a green light is forth coming? |
White light |
|
Traffic signal preemption devices, the sound of an oncoming siren can activate the preemptive devices from how far away? |
Several hundred feet to about half a mile |
|
In strobe light preemptive devices, what color light mounted on traffic pole indicates that the signal has been received and a green light is forth coming? |
White light |
|
Traffic signal preemption devices, the sound of an oncoming siren can activate the preemptive devices from how far away? |
Several hundred feet to about half a mile |
|
Intersection equipped with traffic signal preemptive devices will have a 3 inch light in what colors? What do they mean? |
White - a green light is coming for emergency vehicle Blue - an emergency vehicle is approaching and a red light is coming |
|
The time needed to stop the apparatus or perform an evasive maneuver at the current rate of speed is what? |
Visual lead time |
|
The time needed to stop the apparatus or perform an evasive maneuver at the current rate of speed is what? |
Visual lead time |
|
The distance the vehicle travels from the time the brakes are applied until the apparatus comes to a complete stop? |
Braking distance |
|
The time needed to stop the apparatus or perform an evasive maneuver at the current rate of speed is what? |
Visual lead time |
|
The distance the vehicle travels from the time the brakes are applied until the apparatus comes to a complete stop? |
Braking distance |
|
The sum of the driver’s reaction distance and the vehicle braking distance? |
Total stopping distance |
|
The time needed to stop the apparatus or perform an evasive maneuver at the current rate of speed is what? |
Visual lead time |
|
The distance the vehicle travels from the time the brakes are applied until the apparatus comes to a complete stop? |
Braking distance |
|
The sum of the driver’s reaction distance and the vehicle braking distance? |
Total stopping distance |
|
After perceiving the need to stop, the distance the apparatus travels while the operator transfers his foot from the accelerator to the brake pedal? |
Reaction distance |
|
NFPA 1901 requires that all apparatus with a GVWR or how many pounds or greater be equipped with an auxiliary braking system? |
36,000 lbs |
|
NFPA 1901 requires that all apparatus with a GVWR or how many pounds or greater be equipped with an auxiliary braking system? |
36,000 lbs |
|
Brake torque will increase as the transmission does what? |
Downshifts |
|
This brake uses a valve to restrict the flow of the exhaust, which creates bake pressure that adds to the engine’s inherent braking ability? |
Exhaust brake |
|
This brake is an electronically-activated system added to valve train that converts the mechanical energy of the vehicle into heat by compressing the engine intake air and then discharging the pressure to the atmosphere through the exhaust? |
Engine compression brake |
|
This auxiliary brake is either mounted in the driveline, or supplied as part of rear axle. An electromagnetic field is created by supplying electrical power to a series of coils in the retarder which inhibits the rotation of the rotor and creates a braking torque at the rear wheels? |
Electromagnetic retarder |
|
Chains in auxiliary traction control system may be ineffective in snow deeper than how many inches? |
3-6 inches |
|
Which feature automatically reduces engine torque and applies the brakes to wheels that have lost traction and being to spin? |
ATC automatic traction control |
|
What may be heard when driver controlled differential lock is engaged while turning? |
Scrubbing |
|
Manufacturers recommend turning the driver controlled differential lock off when traveling in what scenario? |
Turning on a downhill |
|
What features are designed to help prevent roll-overs and tipping caused by cornering or sudden changes of direction? |
Stability control systems |
|
A spotter must stand how many feet behind an apparatus? |
8-10 feet |
|
A spotter must stand how many feet behind an apparatus? |
8-10 feet |
|
How many short blasts of the vehicle’s horn immediately before backing the apparatus? |
Two |
|
At 5mph how many feet of hose is laid out each second? |
7 feet |
|
At 5mph how many feet of hose is laid out each second? |
7 feet |
|
The bracket or cabinet in an apparatus must be capable of restraining the equipment against a force of up to how any times the equipment’s weight? |
10 times the weight |
|
At what pressure can hydraulic fluid penetrate skin? |
100 psi |
|
At what pressure can hydraulic fluid penetrate skin? |
100 psi |
|
Who determines the best placement for the first arriving apparatus? |
Driver or company officer |
|
At what pressure can hydraulic fluid penetrate skin? |
100 psi |
|
Who determines the best placement for the first arriving apparatus? |
Driver or company officer |
|
When arriving at an incident and no fire is evident, how should the first arriving apparatus pull up? |
Pass the building the view three sides of building |
|
Collapse zone for vehicles is what? |
One and a half times the height of a building |
|
Collapse zone for vehicles is what? |
One and a half times the height of a building |
|
If a collapse is imminent, where is the safest location? |
Corners of building |
|
During a high rise fire, how many feet from the structure should you taste precautions from falling debris? |
200 feet from the base of building |
|
During a high rise fire, how many feet from the structure should you taste precautions from falling debris? |
200 feet from the base of building |
|
Shorter sections of LDH come in what sizes other than 100’? |
10 to 50feet |
|
During a high rise fire, how many feet from the structure should you taste precautions from falling debris? |
200 feet from the base of building |
|
Shorter sections of LDH come in what sizes other than 100’? |
10 to 50feet |
|
A good way to minimize the chance of intake hose kinking is to put a what directional twist in the hose making the connection between a hydrant and a pumper? |
Counterclockwise |
|
What type kind of pumping can be used when one strong hydrant is used? |
Dual pumping |
|
What type of pumping can be used when pressure needed is greater than the capabilities of the apparatus? |
Tandem pumping |
|
In tandem pumping operations apparatus may be located up to how many feet apart? |
300 feet |
|
What type of pumping can be used to increase the volume of water for an incident? |
Relay pumping |
|
The boundary between wildland and structural development is what? |
Wildland/urban interface |
|
What is a natural man made barrier that will prevent the fire from encircling the vehicle and crew? |
Anchor point |
|
This type of staging is used on any multi unit response of two or more units? |
Level 1 |
|
This type of staging is used on any multi unit response of two or more units? |
Level 1 |
|
During Level 1 staging, units must stop and stage how far from an incident? |
One block |
|
This type of staging is used on any multi unit response of two or more units? |
Level 1 |
|
During Level 1 staging, units must stop and stage how far from an incident? |
One block |
|
This level of staging is implemented when numerous units are responding to operate at the same incident, including mutual aid or a result of multiple alarms? |
Level 2 staging |
|
This type of staging is used on any multi unit response of two or more units? |
Level 1 |
|
During Level 1 staging, units must stop and stage how far from an incident? |
One block |
|
This level of staging is implemented when numerous units are responding to operate at the same incident, including mutual aid or a result of multiple alarms? |
Level 2 staging |
|
On highways, apparatus should never travel on opposite direction of travel unless? |
Police have closed the road traffic |
|
Personnel can enter briefly in this control zone without PPE |
Warm zone |
|
Trains may require how much distance to come to a complete stop? |
1-2 miles |
|
How much does one gallon of water weigh? |
8.3 lbs |
|
How much does one gallon of water weigh? |
8.3 lbs |
|
How much does water weigh per cubic foot? |
62.4 lb/ft3 |
|
Water has a high surface tensions that makes it difficult to do what? |
Soak into dense materials |
|
How any principles of pressure are there? |
6 principles |
|
Fluid pressure is perpendicular to any surface on which it act |
First principle |
|
Fluid pressure is perpendicular to any surface on which it act |
First principle |
|
Fluid pressure as a point in fluid at rest is the same intensity in all directions |
Second prinicple |
|
Fluid pressure is perpendicular to any surface on which it act |
First principle |
|
Fluid pressure as a point in fluid at rest is the same intensity in all directions |
Second prinicple |
|
Pressure applied to a confined fluid transmitted equally in all directions |
Third principle |
|
The pressure of a liquid in an open vessel is proportional to its depth |
Fourth principle |
|
The pressure of a liquid in an open vessel is proportional to its depth |
Fourth principle |
|
The pressure of a liquid in an open vessel is proportional to the density of the liquid |
Fifth prinicple |
|
Is mercury heavier than water? |
Yes |
|
Is mercury heavier than water? |
Yes |
|
The pressure of a liquid at the bottom of a vessel is independent of the shape of the vessel |
Sixth principle |
|
Atmospheric pressure at sea level is? |
14.7 psi |
|
In a vertical cylinder, a pressure of 1 psi makes the column of mercury about how many inches tall? |
2.04 inches |
|
In a vertical cylinder, a pressure of 1 psi makes the column of mercury about how many inches tall? |
2.04 inches |
|
An absolute zero pressure is considered what? |
Perfect vacuum |
|
In a vertical cylinder, a pressure of 1 psi makes the column of mercury about how many inches tall? |
2.04 inches |
|
An absolute zero pressure is considered what? |
Perfect vacuum |
|
Any pressure less than atmospheric pressure is called? |
Vacuum |
|
What is referred to as the height of water supply above that discharge orifice? |
Head |
|
For every one foot increase in elevation, how much psi is gained? |
0.434 psi |
|
When measuring the forward velocity of flow pressure using a nozzle, a smooth bore nozzle must be used with what two items? |
Pitot tube Gauge |
|
What refers to the center line of the pump or the bottom of a static water supply source above or below ground level? |
Elevation |
|
What refers to the center line of the pump or the bottom of a static water supply source above or below ground level? |
Elevation |
|
What is the position of an object in relation to sea level? |
Altitude |
|
Above sea level, atmospheric pressure decreases 0.5 psi for every how many feet? |
1,000 feet |
|
The friction loss in older hose may be as much as what percent compared to new hose? |
50 % or greater |
|
How many principles are there for friction loss? |
Four |
|
If all other conditions are the same, friction loss varies directly with the length of the hose or pipe |
First Principle of friction loss |
|
If all other conditions are the same, friction loss varies directly with the length of the hose or pipe |
First Principle of friction loss |
|
When hoses are the same size, friction loss varies approximately with the square of the increase in the velocity of the flow |
Second Prinicple of friction loss |
|
If all other conditions are the same, friction loss varies directly with the length of the hose or pipe |
First Principle of friction loss |
|
When hoses are the same size, friction loss varies approximately with the square of the increase in the velocity of the flow |
Second Prinicple of friction loss |
|
For the same discharge, friction loss varies inversely as the fifth power of the diameter of the hose |
Third principle |
|
If all other conditions are the same, friction loss varies directly with the length of the hose or pipe |
First Principle of friction loss |
|
When hoses are the same size, friction loss varies approximately with the square of the increase in the velocity of the flow |
Second Prinicple of friction loss |
|
For the same discharge, friction loss varies inversely as the fifth power of the diameter of the hose |
Third principle |
|
For a given velocity, friction loss is approximately the same, regardless of the pressure of the water |
Fourth principle of friction loss |
|
With water being virtually incompressible, a pressure of 30,000 psi is required to reduce its volume by what percent? |
1 % |
|
There are practical limits to the velocity at which a stream can travel. If the velocity is increased beyond this point, the friction will become so great that the entire system is agitated by the resistance creating what? |
Critical velocity |
|
What two things may be added to the water to remove particles from the drinking water? |
Fluoride and ozone |
|
What two things may be added to the water to remove particles from the drinking water? |
Fluoride and ozone |
|
When a fire hydrant receives water from two or more directions, it is said to have what? |
Circulating feed or looped line |
|
Large pipes with relatively widespread spacing, that convert large quantities of water to various points of the system for local distribution to the smaller mains |
Primary Feeders |
|
Large pipes with relatively widespread spacing, that convert large quantities of water to various points of the system for local distribution to the smaller mains |
Primary Feeders |
|
Network of intermediate-sized pipes that reinforce the grid within the various loops of the primary feeder system and aid the concentration of the required fire flow at any point |
Secondary feeders |
|
Large pipes with relatively widespread spacing, that convert large quantities of water to various points of the system for local distribution to the smaller mains |
Primary Feeders |
|
Network of intermediate-sized pipes that reinforce the grid within the various loops of the primary feeder system and aid the concentration of the required fire flow at any point |
Secondary feeders |
|
Grid arrangement of smaller mains serving individual fire hydrants and blocks of consumers |
Distributors |
|
Average amount of water used per day based on the total amount of water used in a water distribution system over the period of one year |
Average Daily Consumption |
|
Average amount of water used per day based on the total amount of water used in a water distribution system over the period of one year |
Average Daily Consumption |
|
Maximum total amount of water that was used during any 24 hour interval within a 3 year period. |
Maximum daily consumption |
|
Average amount of water used per day based on the total amount of water used in a water distribution system over the period of one year |
Average Daily Consumption |
|
Maximum total amount of water that was used during any 24 hour interval within a 3 year period. |
Maximum daily consumption |
|
The maximum amount of water used in any 1 hour interval over the course of a day. |
Peak hourly consumption |
|
Degrees of a narrow fog are between what? |
15-45 |
|
Degrees of a narrow fog are between what? |
15-45 |
|
Degrees of a wide fog are between what? |
45-80 |
|
These type of streams are created by deflecting water around an inside circular stem in the nozzle and the water is then deflected by the exterior barrel of the nozzle. |
Periphery-deflected streams |
|
This type of stream breaks water into fine, evenly divided particles by driving several jets of water together at an angle and provide mostly a wide angle. |
Impinging stream |
|
Most fog nozzles are designed to operate at what psi? They can also operate at these lower psi? |
100psi 50 and 75 psi |
|
High pressure fog nozzles can operate at psi of what? How much GPMs? |
800 psi 8-15 GPM |
|
High pressure fog nozzles can operate at psi of what? How much GPMs? |
800 psi 8-15 GPM |
|
What is the general maximum flow for a handline? |
350 GPM |
|
How long is the piercing nozzle? How use is it? |
3-6 feet 1.5 inches in diameter |
|
How long is the piercing nozzle? How use is it? |
3-6 feet 1.5 inches in diameter |
|
In piercing nozzles, the impinging jet nozzle is capable of flowing how many GPMs at what psi? |
125 GPM 100 psi |
|
What does a chimney nozzle flow at and at what psi? |
1.5-3 GPM 100 psi |
|
What does a chimney nozzle flow at and at what psi? |
1.5-3 GPM 100 psi |
|
Formula for nozzle reaction in solid stream? |
NR = 1.57 X d2 X NP |
|
What does a chimney nozzle flow at and at what psi? |
1.5-3 GPM 100 psi |
|
Formula for nozzle reaction in solid stream? |
NR = 1.57 X d2 X NP |
|
Formula for nozzle reaction in a fog stream? |
NR = 0.0505 X Q X Square root NP |
|
Flowmeters display in increments of? |
10 GPM or less |
|
This type of flow meter is mounted at the top of a straight section of the discharge pipe so that only a small portion of the device extends in the waterway. A sensor measures the speed at which the flow meter spins and translates the information into a flow measurement |
Paddlewheel |
|
This type of flow meter is mounted at the top of a straight section of the discharge pipe so that only a small portion of the device extends in the waterway. A sensor measures the speed at which the flow meter spins and translates the information into a flow measurement |
Paddlewheel |
|
This type of flowmeter employs a stainless steel spring probe to detect water movement in the discharge piping. The greater the flow, the more the spring is bent. An electrical charge is transmitted from the spring to the display for the operator |
Spring probe |
|
This type of flow meter is mounted at the top of a straight section of the discharge pipe so that only a small portion of the device extends in the waterway. A sensor measures the speed at which the flow meter spins and translates the information into a flow measurement |
Paddlewheel |
|
This type of flowmeter employs a stainless steel spring probe to detect water movement in the discharge piping. The greater the flow, the more the spring is bent. An electrical charge is transmitted from the spring to the display for the operator |
Spring probe |
|
A flowmeter in good working order should be accurate to a tolerance of plus or minus how much percentage? |
3 % |
|
Each discharge equipped with a flowmeter must have a digital readout display mounted within how many inches of the control valve for that discharge? |
6 inches |
|
Each discharge equipped with a flowmeter must have a digital readout display mounted within how many inches of the control valve for that discharge? |
6 inches |
|
If a pressure gauge is mounted at the 6 inch location where the digital readout must be, then the flowmeter digital readout must be mounted within how many inches adjacent to the pressure gauge? |
2 inches |
|
In relay pumping, an intake readout cannot be allowed to drop below what psi? |
20 psi |
|
In relay pumping, an intake readout cannot be allowed to drop below what psi? |
20 psi |
|
A pressure governor will not automatically compensate when a hose line is shut down in which mode? |
RPM mode |
|
Condensed formula for 3 inch hose |
FL = Qsquared |
|
Condensed Q formula for 4 inch |
FL = Q2/5 |
|
Condensed Q formula for 4 inch |
FL = Q2/5 |
|
Condensed Q formula for 5 inch hose |
FL = Q2/15 |
|
What type of pump is self priming? |
Positive displacement pump |
|
Posing pumps can provide pressures of up to? |
1,000 psi |
|
What are the simplest type of pump? |
Rotary pump |
|
Total amount of water that can be pumped by a rotary gear pump depends on what? |
Size of the pockets in the gears and speed of rotation |
|
To prevent damage to the casings of pumps, most gear pumps feature gears made of what? |
Bronze or another soft metal |
|
What are pump casings made of? |
Strong alloy such as cast iron |
|
What is the most common type of pump used to prime a centrifugal pump? |
Rotary Vane pump |
|
In a centrifugal pump the volume capacity of the pump is dictated by the size of? |
Impeller |
|
Three main factors that influence a centrifugal fire pump’s discharge pressure : |
1. Amount of water being discharged 2. Speed at which the impeller is turning 3. Pressure of water when it enters the pump from a pressurized source |
|
What type of pump is unable to pump air and is more self priming? |
Centrifugal pump |
|
Single stage centrifugal pumps have the ability to flow how many GPMs? |
2,250 GPM |
|
Newton’s Third Law of Physics? |
For every action there is an equal and opposite reaction |
|
The process of switching between pressure and volume is referred to as? |
Changeover |
|
In parallel (volume) mode the pump will supply 100% of its rated capacity at 150 psi at feet of lift with how many feet of suction hose while drafting? |
20 feet |
|
In parallel (volume) mode the pump will supply 100% of its rated capacity at 150 psi at feet of lift with how many feet of suction hose while drafting? |
20 feet |
|
Many power-operated transfer valves operate at pressures as high as? |
200 psi |
|
In parallel (volume) mode the pump will supply 100% of its rated capacity at 150 psi at feet of lift with how many feet of suction hose while drafting? |
20 feet |
|
Many power-operated transfer valves operate at pressures as high as? |
200 psi |
|
Switching from volume to pressure can result in the immediate doubling of what? |
Doubling of the previous discharge pressure |
|
Some fire pumps have been constructed using up to four impellers connected in series to develop pressure up to? |
1,000 psi |
|
What type of valves are essential for a multistage pump? |
Clapper valves |
|
A very close opening must be maintained between the pump casing and the hub of the impeller, the opening is usually limited to how wide? |
.01 inch or less |
|
What can be replaced to maintain the preferred spacing between the hub of the impeller and pump casing? |
Wear rings or clearance rings |
|
Newer model centrifugal pumps may be equipped with what to circulate overheated water between the pump and the main water tank or the atmosphere? |
Thermal relief valve |
|
How can a driver manually check for excessive pump temperatures? |
Placing hand on intake pipe to see how warm it is |
|
Heat develops by friction where the packing rings come into contact with the shaft in the pump. In order to overcome this wear and tear what is supplied with the packing rings to provide cooling? |
Lantern or slinger rings |
|
What happens if packing is too loose in a pump? |
Excessive water loss Inability to draft from static source |
|
Most manufacturers recommend the pump to be what after fire calls in cold weather conditions? |
Drained |
|
What types of pump seals are offered that are superior in resistance to warping, stretching, and corrosion |
Ceramic seals |
|
Auxiliary engine pumps generally have the pump capacity of what? |
500 GPMs |
|
Auxiliary engine pumps generally have the pump capacity of what? |
500 GPMs |
|
A mechanism that allows a vehicle engine to power equipment such as a pump, winch, or portable tool; it is typically attached to the transmission |
PTO |
|
The PTO unit is powered by what in the vehicle’s transmission? |
Idler gear |
|
The PTO unit is powered by what in the vehicle’s transmission? |
Idler gear |
|
In a pump and tool operation which gear would be beneficial to maintain a balance between speed and pressure? |
Lowest gear |
|
Full torque PTOs that allow the installation of pumps as large as 1,250 GPM are commonly used with automatic transmissions where what mechanism of the engine drive the PTO unit? |
Flywheel |
|
Front mount pumps is typically driven through a gear box and a clutch connected by a drive shaft to the front of what? |
Crankshaft |
|
Front mount pumps is typically driven through a gear box and a clutch connected by a drive shaft to the front of what? |
Crankshaft |
|
In front mount pumps, what causes the impeller of the pump to turn faster than the engine? |
Step up gear ratio |
|
Midship mounted pump where power is supplied to the pump through the use of a “what” located in the drive line between the transmission and the rear axle? |
Split shaft gear case (transfer case) |
|
In midship mounted pumps, the gear ratio is set to match the engine torque curve to the speed of the rotation required for the impeller to deliver the rated capacity of the pump. The ratio is configured to turn faster than the engine by how many times as fast? |
1.5-2.5 times as fast |
|
Some midship mounted pumps are rated for flows between? |
500-2,250 GPM |
|
With he engine in idle and the pump engaged, most speedometers will indicate between what? |
10-15 mph |
|
What type of pumps are used for auxiliary systems, including compressed air foam system and generators on some apparatus? |
Hydrostatic pumps |
|
Rear-mount pumps offer an advantage which include? |
Even weight distribution on chassis More usable compartment space |
|
The piping system and the fire pump itself must be capable of withstanding a hydrostatic test of? |
500 psi |
|
According to the NFPA, pumpers with the capacity of 500 GPM or less should have piping capable of flowing what? |
250 GPM |
|
According to the NFPA, pumpers with the capacity of 500 GPM or less should have piping capable of flowing what? |
250 GPM |
|
According to the NFPA, pumpers with the capacity greater than 500 GPM should be able to flow at least? |
500 GPM |
|
Many pumpers are equipped with tank-to-pump piping as large as? |
4 inches |
|
Modern pumps are equipped with what type of valve to prevent damage to the tank if the tank-to-pump opens inadvertently while water is being supplied to the pump under pressure, such as during a relay? |
Check valve |
|
As piping nears the pump itself, what type of shape does the piping taper off, to prevent a vortex that may introduce air into the pump? |
Square |
|
Pumps rated greater than what flow may need more than one large intake connection at each location? |
1,500 GPM |
|
As a minimum, all fire apparatus with a rated pump capacity of 750 GPM or greater must be equipped with at least how many 2.5 inch discharges? |
2 |
|
As a minimum, all fire apparatus with a rated pump capacity of 750 GPM or greater must be equipped with at least how many 2.5 inch discharges? |
2 |
|
Pumps rated less than 750 GPM are to have how many 2.5 inch discharges? |
1 |
|
As a minimum, all fire apparatus with a rated pump capacity of 750 GPM or greater must be equipped with at least how many 2.5 inch discharges? |
2 |
|
Pumps rated less than 750 GPM are to have how many 2.5 inch discharges? |
1 |
|
Discharges greater than “what” are not to be located on the pump operator’s panel? |
2.5 inches |
|
According to the NFPA apparatus equipped with tanks of less than 1,000 gallons must have a tank fill line of a least? |
1 inch in diameter |
|
According to the NFPA apparatus equipped with tanks of less than 1,000 gallons must have a tank fill line of a least? |
1 inch in diameter |
|
According to the NFPA tanks greater than 1,000 gallons must be provided with at least how large of a tank fill line? |
2 inch |
|
Valve life may be extended by doing this. |
Flushing the pump of debris |
|
Which valve permits the full flow of water through a line with a minimum friction loss? |
Ball valve |
|
Circulator and booster line cooling valves are piped with what type of tubing? |
Small diameter copper tubing with very limited flow capability |
|
What type of valves are normally used on large diameter intakes and discharges? |
Gate or butterfly valves |
|
What type of valves are normally used on large diameter intakes and discharges? |
Gate or butterfly valves |
|
Butterfly valves are most commonly operated by what type of handles? |
Quarter-turn handles |
|
NFPA states that all intakes or discharges that are 3 inches or greater to be equipped with what type of acting valve controls? How long to open or close the valve? |
Slow acting 3 seconds or more |
|
Failure to close all of the drains on the fire pump may? |
Result in inability to prime during drafting |
|
A pressure control device on a fire apparatus pumping system must operate within 3-10 seconds after the discharge pressure rises and restricts the pressure from exceeding how much pressure above the set level? |
30 psi |
|
In relief valves, when the pump discharge pressure rises higher than allowed by the pilot valve setting, the spring in the pilot valve compresses. This action allows the needle valve to move in which direction? Causing water to dump back into the pump intake. |
To the left |
|
The most common relief valve uses what? |
Spring-controlled pilot valve |
|
The most common relief valve uses what? |
Spring-controlled pilot valve |
|
It is generally recommended that the intake relief valves be set to open when the intake pressure rises more than what psi above the necessary operating pressure? |
10 psi |
|
Newer pumpers with electronic governors use a pressure sensing element that is connected to the discharge manifold: |
Pressure transducer |
|
The electronic governor features cavitation protection by returning the engine to idle when intake pressure drops below what psi? |
30 psi |
|
Oil reservoir for the priming pump is often mounted higher than the pump itself, a vent hole is provided to break the siphon action as the tank drains. This vent must be checked frequently for? |
Dirt and debris |
|
Oil reservoir for the priming pump is often mounted higher than the pump itself, a vent hole is provided to break the siphon action as the tank drains. This vent must be checked frequently for? |
Dirt and debris |
|
The preferred engine speed for priming is in the range of? |
1,000-1,200 RPMs |
|
Exhaust primers are found on what type of pumpers? |
Skid-mounted pumps Older fire apparatus |
|
With vacuum primers, what type of valve must be installed to prevent water from a primed pump from being drawn into the engine manifold? |
Float valve |
|
With vacuum primers, what type of valve must be installed to prevent water from a primed pump from being drawn into the engine manifold? |
Float valve |
|
This type of primer works best at idle speed and low engine RPM |
Vacuum primer |
|
With vacuum primers, what type of valve must be installed to prevent water from a primed pump from being drawn into the engine manifold? |
Float valve |
|
This type of primer works best at idle speed and low engine RPM |
Vacuum primer |
|
This type of primer to create a vacuum works at high RPMs |
Exhaust primer |
|
This type of primer uses a compressor to supply an airline to a jet pump that creates a Venturi Effect that primes the pump using no moving parts or lubricants |
Air primer |
|
This type of primer uses a compressor to supply an airline to a jet pump that creates a Venturi Effect that primes the pump using no moving parts or lubricants |
Air primer |
|
The master intake is calibrated from between what psi of positive pressure? |
0-600 psi |
|
This type of primer uses a compressor to supply an airline to a jet pump that creates a Venturi Effect that primes the pump using no moving parts or lubricants |
Air primer |
|
The master intake is calibrated from between what psi of positive pressure? |
0-600 psi |
|
The master intake is measured between what inches of mercury on the negative side? |
0-30 inches of mercury (vacuum) |
|
When vacuum reading reaches how many inches of mercury indicating the pump is nearing its capacity and is not able to supply additional lines? |
20 inches |
|
What is the tachometer? |
Displays engine speed in revolutions per minute |
|
This meter display indicates the battery condition and measures the drops in voltage when electrical accessories are used |
Voltmeter |
|
What is another name for a throttle knob? |
Vernier |
|
What are the two types of auxiliary cooling devices? |
Marine type Immersion type |
|
IFSTA recommends chocking the wheels of truck every time the driver does what? |
Exits the cab |
|
IFSTA recommends chocking the wheels of truck every time the driver does what? |
Exits the cab |
|
What three type of valves are used to circulate water back into the tank to prevent pump from overheating |
Booster cooling valve Bypass valve Circulator valve |
|
During pumping operations, what pressure must be maintained at all times at the master intake? |
20 psi |
|
Executing a reverse lay is a common method for setting up water supply using what size hose as a supply line? |
Medium diameter hose |
|
Use what type of adapters at the hydrant and the pump panel to execute a reverse lay using hose with threaded couplings if the hose bed has been set up for a forward lay? |
Double female at hydrant Double male at pump panel |
|
Use what type of adapters at the hydrant and the pump panel to execute a reverse lay using hose with threaded couplings if the hose bed has been set up for a forward lay? |
Double female at hydrant Double male at pump panel |
|
These type of valves prevent water from entering the tank under pressure from the pump intake. |
Check valves |
|
After transitioning to an external water supply, the driver must then do what? |
Close the tank-to-pump valve |
|
When the pumper is discharging water, the intake is displaying what type of pressure? |
Residual pressure |
|
When a pump is connected to a hydrant and is not discharging water, the pressure shown on the gauge is what type of pressure? |
Static pressure |
|
With an atmospheric pressure at sea level of 14.7 psi, a partial vacuum of -2 psi is measured on the intake pressure gauge as 4 inches of mercury. This causes the water to rise how many feet into the intake hose from the surface of the water? |
4.6 feet |
|
In a city located 5,000 feet above sea level, the atmospheric pressure is? |
12.2 psi |
|
Most pumps are able to develop a vacuum capacity of how many inches of mercury? |
22 inches |
|
What are three indications of cavitation? |
Lack of reaction on the pressure gauge to increase in the throttle Noise like gravel passing through pump Pressure gauge fluctuates and streams pulsate |
|
How many inches of water must be all around the strainer for deployment? |
24 inches |
|
In a floating strainer, that strainer only take in water through how many sides? |
One side |
|
Low level strainers can draft down to a depth of how many inches? |
2 inches |
|
Low level strainers can draft down to a depth of how many inches? |
2 inches |
|
What water temperatures may adversely impact the ability of the pump to reach capacity? |
Below 35 Above 90 |
|
All fire pumps are rated to pump their capacity at how many feet of lift? |
10 feet |
|
A pump in good working order can lift how many feet of water max? |
25 feet |
|
To create an effective fire stream, a lift of no grater than how many feet must be created? |
20 feet |
|
At a lift of 20 feet, what percent capacity is the pump working at? |
60% |
|
It is desirable to lay out an extra how many feet of supply line to set up at a draft location. Where the lift will be lower and more water can be supplied? |
100 feet |
|
During drafting, any deviation from the normal engine temperature is a sign for what? |
Another pumper may need to be brought in to continue the drafting operation |
|
When supporting a sprinkler system, multistage pumps should be operated in what transfer valve position? |
Parallel (volume) |
|
For standpipes, do not use pump discharge in excess of how much psi? Unless the standpipe system, hose, and appliances have been designed to function under high pressures |
185 psi |
|
What is the difference in elevation. Between the surface of the static water supply and the center of the pump intake? |
Lift |
|
What type of vacuum is the pressure in the intake hose and in the pump drops lower than the atmosphere pressure resulting in water being forced into the pump? |
Partial vacuum |
|
For every 1,000 feet of altitude, the atmospheric pressure decreases by how much? |
0.5 psi |
|
A valve installed at the standpipe connection that is designed to reduce the amount of water pressure at the discharge usually at 100 psi |
Pressure-reducing valve |
|
At sea level what is the height theoretical lift? |
33.9 feet |
|
At sea level what is the height theoretical lift? |
33.9 feet |
|
What is the height of maximum lift? |
25 feet |
|
Dependable lift is the height of what? |
14.7 feet |
|
All fire department pumpers are rated for a minimum lift of 10 feet from the center of the pump to the surface of the water through how many feet of hard suction? |
20 feet of hard intake |
|
All fire department pumpers are rated for a minimum lift of 10 feet from the center of the pump to the surface of the water through how many feet of hard suction? |
20 feet of hard intake |
|
All fire department pumpers are rated when drafting the strainer is 2 feet submerged in a water depth of what? |
4 feet |
|
A pump may only deliver 70% of its capacity if lift is increased by how many feet? |
5 feet |
|
A pump may only deliver 70% of its capacity if lift is increased by how many feet? |
5 feet |
|
A pump may only deliver 60% of its capacity at how many feet of a lift? |
20 feet |
|
Floating pumps placed in an adequate water source can develop and maintain a flow of up to how many GPMs? |
500 GPM |
|
Low level strainers may be used for water as shallow as how many feet? |
1 foot |
|
Low level strainers may be used for water as shallow as how many feet? |
1 foot |
|
Low-level strainers are commonly used to draft from portable water tanks and may draw water as shallow as how many inches? |
1-2 inches |
|
If an adequate draft cannot be established due to clogging at the strainer, what can you do with tank water to dislodge the debris? |
Back flush |
|
This static water supply source is normally used for agricultural purposes or domestic, some are specifically constructed and placed for fire department use |
Cisterns |
|
This static water supply source is normally used for agricultural purposes or domestic, some are specifically constructed and placed for fire department use |
Cisterns |
|
Cisterns range in sizes from? |
10,000 - 100,000 gallons |
|
Water storage receptacle that is usually underground and may be supplied by a well or rainwater runoff |
Cistern |
|
Private water storage tanks can be stored in ground and can be elevated and range in from what sizes? |
Several hundred to tens of thousand of gallons of water |
|
Agricultural irrigation systems in some jurisdictions may flow in excess of how many GPMs? |
1,000 GPM |
|
Agricultural irrigation systems in some jurisdictions may flow in excess of how many GPMs? |
1,000 GPM |
|
These irrigation systems generally supply water via open canals and portable pipes |
Agricultural irrigation systems |
|
Agricultural irrigation systems in some jurisdictions may flow in excess of how many GPMs? |
1,000 GPM |
|
These irrigation systems generally supply water via open canals and portable pipes |
Agricultural irrigation systems |
|
Which type of apparatus can be involved in relay pumping? |
Any with an adequate pump |
|
Water supply pumpers in a relay should be the apparatus with the largest pumping capacity |
Source pumpers |
|
For relay, a hose tender may carry how much large diameter hose? |
A mile or more |
|
For relay, a hose tender may carry how much large diameter hose? |
A mile or more |
|
Large diameter hose can be what size to what in diameter? |
3.5 - 6 inches |
|
In a relay operation, the overall capacity of the system is determined by? |
Smallest pump Smallest diameter hose used |
|
In a relay operation, the overall capacity of the system is determined by? |
Smallest pump Smallest diameter hose used |
|
It is advisable for drivers to maintain an intake pressure of what as a relay pumper? |
20-30 psi |
|
In a relay operation, the overall capacity of the system is determined by? |
Smallest pump Smallest diameter hose used |
|
It is advisable for drivers to maintain an intake pressure of what as a relay pumper? |
20-30 psi |
|
In a relay, apparatuses in relay and attack should be operating in which mode if they have pressure governors? |
Pressure RPM mode |
|
For relay pumpers equipped with an adjustable intake relief valve, they should be set to what? |
10 psi above static and discharge pressure to which they are attached to |
|
Attack pumpers in a relay operation with an adjustable intake relief valve should be set between what pressure? |
50-75 psi |
|
Most water shuttles require at least how many pumpers for water supply? |
2 pumpers |
|
Most water shuttles require at least how many pumpers for water supply? |
2 pumpers |
|
For water shuttle operators Marion’s, water tenders must be designed to be filled at a rate of at least what? |
1,000 GPMs |
|
For water tenders, vehicle weight restrictions generally limit single rear axle apparatus to a maximum capacity of how many gallons? |
2,000 gallons |
|
For apparatus greater than how many gallons, tandem rear axles, tri-axles, or semi-trailers are required |
2,000 gallons or more |
|
A vacuum tender is able to self fill from a static water source at a rate of up to 2,000 GPM with a lift of up to how many feet? |
22 feet |
|
A vacuum tender is able to self fill from a static water source at a rate of up to 2,000 GPM with a lift of up to how many feet? |
22 feet |
|
A vacuum tender is capable of discharging its water tank at a rate of how many GPMs? |
1,750 GPM |
|
NFPA 1901 requires that water be capable of being dumped from what sides of apparatus in water shuttle operations? |
Left, right and rear |
|
NFPA 1901 requires that water be capable of being dumped from what sides of apparatus in water shuttle operations? |
Left, right and rear |
|
Some apparatus equipped with front dump valve for water shuttle operations do not meet what GPM flow requirement? |
1,000 GPM |
|
In water shuttles, the use of gravity dump uses a how many inches piping ? |
8 inches or larger |
|
In water shuttles, the use of gravity dump uses a how many inches piping ? |
8 inches or larger |
|
In water shuttle ops, there are two large tank discharges in use on water tenders? |
Gravity dump Jet-assisted dump |
|
Onboard tank of water tenders must avoid a sudden pressure failure of the tank during quick-filling operations by having what? |
Vents |
|
This allows free movement of water at the bottom of the tank and movement of air at the top during rapid filling or unloading |
Baffles |
|
This allows free movement of water at the bottom of the tank and movement of air at the top during rapid filling or unloading |
Baffles |
|
NFPA requires all tenders to have the capability to dump at minimum average flow rate of 1,000 GPM for the first what percent of it’s tank capacity? |
90 % |
|
Any portable tank used for water shuttle ops should be set up on a surface that is as level as possible and have capacity of at least how many gallons larger than the water tank on the apparatus that will supply it? |
500 gallons |
|
In water shuttle ops, incidents that require a flow rate of how many GPM are best served by multiple tank operation? |
300 GPM |
|
In water shuttle ops, incidents that require a flow rate of how many GPM are best served by multiple tank operation? |
300 GPM |
|
In water shuttle ops, most multi-tank operations use how many portable tanks? |
2-5 portable tanks |
|
In water shuttle ops, the jet siphon hose line is typically what size? |
1.5 inch |
|
In water shuttle ops, operations that require more than three tanks and jet siphons and flows over 500 GPM, what should be used to transfer water to the tank supplying the attack pumper? |
Parallel jet siphons |
|
During water shuttle ops, when does the timer start and end? |
Starts when dump valve is opened Ends when tender is back in position at portable tank |
|
Most water tenders dump how much percent of their load before leaving the dump site? |
90% |
|
Most water tenders dump how much percent of their load before leaving the dump site? |
90% |
|
Shuttle operations are divided into two time elements: |
Travel time Handling time |
|
Most water tenders dump how much percent of their load before leaving the dump site? |
90% |
|
Shuttle operations are divided into two time elements: |
Travel time Handling time |
|
Class B fuels are divided in two categories: |
Hydrocarbons - crude oil, fuel oil, gasoline Polar solvents - alcohol, acetone, ketones, and esters |
|
Most water tenders dump how much percent of their load before leaving the dump site? |
90% |
|
Shuttle operations are divided into two time elements: |
Travel time Handling time |
|
Class B fuels are divided in two categories: |
Hydrocarbons - crude oil, fuel oil, gasoline Polar solvents - alcohol, acetone, ketones, and esters |
|
Hydrocarbons have a specific gravity of? |
Less than one and will float on water |
|
Many modern fuels, including gasoline are blended with up to what percent of solvent additives and should be treated as polar solvents? |
15 % |
|
Most fire fighting foam concentrates are formulated to mix with what percentage of water? |
94 - 99.9% |
|
Most fire fighting foam concentrates are formulated to mix with what percentage of water? |
94 - 99.9% |
|
Foam is proportioned in four ways : |
Batch mixing Premixing Induction Injection |
|
Four ways foam is stored |
Pails Barrels Totes Apparatus tanks |
|
Four ways foam is stored |
Pails Barrels Totes Apparatus tanks |
|
Pails of foam |
5 gallons |
|
Four ways foam is stored |
Pails Barrels Totes Apparatus tanks |
|
Pails of foam |
5 gallons |
|
Barrels of foam |
55-gallon barrel |
|
Four ways foam is stored |
Pails Barrels Totes Apparatus tanks |
|
Pails of foam |
5 gallons |
|
Barrels of foam |
55-gallon barrel |
|
Totes of foam |
275 gallon container |
|
Apparatus tanks with foam |
20- 200 gallons Foam pump or tender can carry 8,000 gallons |
|
Chemical that lowers the surface tension of a liquid; allows water to spread more rapidly over the surface of Class A fuels and penetrate organic fuels |
Surfactant |
|
Chemical that lowers the surface tension of a liquid; allows water to spread more rapidly over the surface of Class A fuels and penetrate organic fuels |
Surfactant |
|
The shelf life of properly stored Class A foam solution can be how long? |
20 years |
|
Class A foam concentrates may be mixed with what percentages? |
0.1 - 1 % |
|
Fire attack and overhaul with standard fog nozzle using foam percentage? |
0.2-0.5 percent concentrate |
|
Fire attack and overhaul with standard fog nozzle using foam percentage? |
0.2-0.5 percent concentrate |
|
Exposure protection with standard fog nozzle using Class A Foam |
0.5-1 percent concentrate |
|
Fire attack and overhaul with standard fog nozzle using foam percentage? |
0.2-0.5 percent concentrate |
|
Exposure protection with standard fog nozzle using Class A Foam |
0.5-1 percent concentrate |
|
Any application with air aspirating foam nozzles using Class A Foam percentage? |
0.3-0.7 percent concentrate |
|
Any application with compressed air foam systems (CAFS) Class A Foam percentage? |
0.2-0.5 percent concentrate |
|
Application rate refers to the minimum amount of foam solution applied to a fire is rated by? |
Per minute Per square foot |
|
Class B Foam consists of what? |
Synthetic - fluorosurfactants Proteins base |
|
Class B Foam should be stored in cool areas to max shelf life, what is shelf life for protein and synthetic foam? |
Protein - 10 years Synthetic - 20-25 years |
|
AFFF and fluoroprotein can be mixed together? T/F? |
True |
|
Class B Foams are mixed in proportions from what to what percentage? |
1-6 % |
|
What are the percentage ranges for hydrocarbons and polar solvents fuels with Class B Foam? |
Hydrocarbons - 1-3% Polar solvents - 3-6% |
|
Class B Low Foam expansion contains air/solution ratio of up to? |
20:1 |
|
Class B Low Foam expansion contains air/solution ratio of up to? |
20:1 |
|
Class B medium foam expansion has the air/solution ratio to what range? |
20:1 - 200:1 |
|
Class B Low Foam expansion contains air/solution ratio of up to? |
20:1 |
|
Class B medium foam expansion has the air/solution ratio to what range? |
20:1 - 200:1 |
|
Class B high GPM expansion has air/solution ratio to what range? |
200:1 - 1000:1 |
|
Fluoroprotein Foam is a combination of what? |
Protein based foam and synthetic foam |
|
Fluoroprotein Foam is a combination of what? |
Protein based foam and synthetic foam |
|
Fluoroprotein foam may be made alcohol resistant with the addition of what? |
Ammonia salts suspended in organic solvents |
|
Alcohol resistive properties added in the fluoroprotein foam will be effective for how many minutes offering high-water retention and resistance to heat? |
15 minutes |
|
Regular protein foams over good heat stability and? |
Burn back resistance |
|
AFFF should be applied how to the fuel product in order to allow the membrane to form? |
Gently |
|
The pressure at the discharge side of the eductor must not exceed what percent of the eductor inlet pressure? |
70% |
|
Eductors must be properly maintained after each use in order to ensure readiness, use a bucket of water to immerse foam pickup tube, letting it induct water for at least how long? |
1 minute |
|
The foam concentrate inlet to the eductor should be no more than how many feet above the liquid surface of the foam concentrate? |
No more than 6 feet |
|
Some master stream foam nozzles are capable of delivering how many GPMs? |
14,000 GPMs |
|
Some master stream foam nozzles are capable of delivering how many GPMs? |
14,000 GPMs |
|
Jet Ration controller is a type of inline eductor that may be used to supply foam concentrate to a self-educting master stream, it may be located at distances of up to how many feet from the nozzle and how much elevation? |
3,000 feet 50 feet elevation |
|
Jet ratio controllers proportions the concentrate at what percent solution? Which it is further proportioned with water resulting in a discharge of what? |
66.5% 3 % further discharged |
|
With around-the-pump proportioners, when in the open position, the valve allows approximately how many GPMs to flow through the piping? |
10-40 GPMs |
|
With around-the-pump proportioners, when in the open position, the valve allows approximately how many GPMs to flow through the piping? |
10-40 GPMs |
|
Class A Foam solutions do not retain their foaming properties when mixed in water for more than how many hours? |
24 hours |
|
With around-the-pump proportioners, when in the open position, the valve allows approximately how many GPMs to flow through the piping? |
10-40 GPMs |
|
Class A Foam solutions do not retain their foaming properties when mixed in water for more than how many hours? |
24 hours |
|
With CAFS, 2 cubic feet per minute of airflow per gallon per minute of foam solution produces a dry foam of up to how many GPM of foam solution? What expansion ratio is this? |
100 GPM 10:1 expansion ratio |
|
With around-the-pump proportioners, when in the open position, the valve allows approximately how many GPMs to flow through the piping? |
10-40 GPMs |
|
Class A Foam solutions do not retain their foaming properties when mixed in water for more than how many hours? |
24 hours |
|
With CAFS, 2 cubic feet per minute of airflow per gallon per minute of foam solution produces a dry foam of up to how many GPM of foam solution? What expansion ratio is this? |
100 GPM 10:1 expansion ratio |
|
Most structural and wildland suppression operations conducted with CAFS use airflow rate of what range cubic feet per minute? |
0.5-1 cubic feet of foam solution per minute |
|
What are the two basic types of medium and high expansion foam generators? |
Water aspirating Mechanical blower |
|
The two basic categories of testing are grouped as? |
Preservice testing Performance testing |
|
PRESERVICE testing includes which tests? |
Manufacturer test Pump certification test Acceptance test |
|
Which testing is available for fire department personnel to be present? |
Acceptance testing |
|
Manufacturer is required to perform two specific tests in addition to the pump certification test, which are they? |
Road test Hydrostatic test |
|
The apparatus must accelerate to 35 mph from a standing start within how many seconds? |
25 seconds |
|
Apparatus must achieve at least a top speed of what? |
50 mph |
|
Apparatus must achieve at least a top speed of what? |
50 mph |
|
The apparatus must come to a full stop from 20 mph within how many feet? |
35 feet |
|
With the the exception of the tank to fill and tank to pump lines on the side of the valves, are subjected to a minimum hydrostatic test pressure of what psi for how many minutes? |
500 psi 10 minutes |
|
In jurisdictions that have an elevation higher than how many feet must perform an engine overload test as part of acceptance testing? |
2,000 feet |
|
When must a pumper go through a performance test? |
Annually Pump repair Power train repair |
|
The air temperature when pump performance test should be between what? |
0-110 degrees |
|
The air temperature when pump performance test should be between what? |
0-110 degrees |
|
The water temperature for pump performance test should be between what? |
35-90 degrees Fahrenheit |
|
With pumper performance tests , the barometer must be at least how many inches of mercury when corrected to sea level? |
29 inches |
|
With pumper performance tests , the barometer must be at least how many inches of mercury when corrected to sea level? |
29 inches |
|
During the pump performance test, the water level from static source must be how deep and the strainer must be submerged how deep? |
Static source must be 4 ft deep Strainer must be submerged 2 ft |
|
During a pump performance test pumps rated at 1,500 GPMs or less must have a max distance from centerline of pump intake above the surface water of? How about for pumps rated for 2,000GPM? |
10 foot max lift 6 foot max lift |
|
During performance test, you must stop the test and replaced the hose if the couplings of the hose have moved away from the scribed mark more than how many inches? |
3/8 of an inch |
|
Performance tests are performed in four different pressures, what are they? |
150 psi 165 psi 200 psi 250 psi |
|
NFPA 1911 specifies that all gauges used for service testing must be calibrated within how many days of the testing? |
60 days |
|
During performance test, a gauge to determine pump discharge with what range? |
0-400 psi |
|
A flowmeter indicates flow in gallons per minute, within plus or minus how much percent of accuracy? |
3% |
|
During performance tests, were hearing protection if noise levels have the potential to reach or exceed how many decibels? |
90 decibels |
|
Pump apparatus needs to be removed from service if pump fails to reach how many inches of mercury? |
22 inches |
|
NFPA1911 states that fire pumps of 1,250 GPM capacity must achieve prime in how many seconds? |
30 seconds or less |
|
NFPA1911 states that fire pumps of 1,250 GPM capacity must achieve prime in how many seconds? |
30 seconds or less |
|
NFPA 1911 states pumps rated at 1,500 GPM must reach prime within how many seconds? |
45 seconds |
|
If a hand held pitot gauge is used for flow test, the tip of gauge must be how far from nozzle end? |
1.5 nozzle diameter |
|
The difference in readings between the flowmeter and the pitot gauge must not be more than what percent? |
10 percent |
|
Any apparatus that achieves less than what percent during performance testing may be placed out of service and tested again or given lower rating based on results? |
90 percent |
|
What are the four methods for testing a foam proportioning system for calibration accuracy? |
Foam concentrate displacement method Foam concentrate pump discharge volume method Foam solution refractivity testing Foam solution conductivity testing |
|
This foam method checks the volume of foam concentrate that is drawn through the system to determine the accuracy of the proportioning equipment |
Foam concentrate displacement method |
|
Certain direct injection type proportioning systems may use this method to check the volume of foam concentrate that is proportioned into a fire stream: |
Foam concentrate pump discharge volume method |
|
Certain direct injection type proportioning systems may use this method to check the volume of foam concentrate that is proportioned into a fire stream: |
Foam concentrate pump discharge volume method |
|
Tests the quality of a foam solution after it has been created by a foam proportioning system. |
Foam solution refractivity testing |
|
Certain direct injection type proportioning systems may use this method to check the volume of foam concentrate that is proportioned into a fire stream: |
Foam concentrate pump discharge volume method |
|
Tests the quality of a foam solution after it has been created by a foam proportioning system. |
Foam solution refractivity testing |
|
A device used to measure the amount of foam concentrate in he solution by measuring the velocity of light that travels through the foam solution: |
Refractometer |
|
Certain direct injection type proportioning systems may use this method to check the volume of foam concentrate that is proportioned into a fire stream: |
Foam concentrate pump discharge volume method |
|
Tests the quality of a foam solution after it has been created by a foam proportioning system. |
Foam solution refractivity testing |
|
A device used to measure the amount of foam concentrate in he solution by measuring the velocity of light that travels through the foam solution: |
Refractometer |
|
Testing to ensure the quality of synthetic based foam produced by various foam proportioning systems and equipment: |
Foam solution conductivity testing |
|
Base rails on aerial are called? |
Beams |
|
Top rails on an aerial are called? |
Hand rails |
|
Aerials designed with what feature provide greater strength than older designs? |
K-bracing |
|
What are the four main components of a hydraulic system? |
Actuators Hydraulic fluid Hydraulic pump Hydraulic reservoir |
|
What are the four main components of a hydraulic system? |
Actuators Hydraulic fluid Hydraulic pump Hydraulic reservoir |
|
In hydraulic system, this transforms power into mechanical force: |
Actuator |
|
In hydraulic system, this is the medium by which the system transmits force: |
Hydraulic fluid |
|
Depending on the manufacturer of the aerial apparatus, hydraulic fluid may be under pressure of up to? |
3,500 psi or more |
|
The series of tubes and hoses that supply the hydraulic system are aircraft type, steel braided hose that can withstand how much pressure from normal operating pressure? |
Four times greater than normal operating pressure |
|
In a hydraulic system, this valve prevents unintentional or undesirable motion of the device from its established position: |
Counterbalance valves |
|
In a hydraulic system, this valve prevents unintentional or undesirable motion of the device from its established position: |
Counterbalance valves |
|
This is a three way valve that directs fluid to either the stabilizer control valves or the aerial device control valves |
Selector valve |
|
In a hydraulic system, this valve prevents unintentional or undesirable motion of the device from its established position: |
Counterbalance valves |
|
This is a three way valve that directs fluid to either the stabilizer control valves or the aerial device control valves |
Selector valve |
|
Hydraulic cylinders used for elevation and telescopic control of the aerial device and for opening stabilizers are what? |
Double acting cylinders capable of receiving oil under pressure from both sides of the piston |
|
How many rotary systems are on an aerial apparatus? |
2 |
|
How many rotary systems are on an aerial apparatus? |
2 |
|
What do each rotary devices on aerial do? |
Rotates aerial device through pinion drive and ring Operates on a winch drive to extend and retract aerial device |
|
Hydraulic cylinders used to lift the aerial device from its bed to working position: |
Hoisting cylinders |
|
In a hydraulic cylinder, the pivoting end of the piston rod that is connected to the anchor ear by the heel pin |
Trunnion |
|
Normal hydraulic pressure on an aerial is between? |
850-3,000 psi |
|
To lower a ladder from an aerial manually, you can bleed the pressure from the cylinder through what? |
Bleed-down valve |
|
To lower a ladder from an aerial manually, you can bleed the pressure from the cylinder through what? |
Bleed-down valve |
|
Aerial ladders made in North America, the fully extended ranges from? |
50-137 ft |
|
Three distinct elevating platforms are? |
Aerial ladder platform Telescoping aerial platform Articulating aerial platform |
|
What is the required minimum floor area of a platform? |
14 square feet |
|
What is the required minimum floor area of a platform? |
14 square feet |
|
On a platform, they must have a rail completely enclosing the floor area with no opening under the railing greater than what? |
24 inches |
|
On a platform a kickplate is required at floor level and should be how high? |
4 inches |
|
NFPA requires nozzle below platform to flow at? |
75 GPMS |
|
NFPA requires nozzle below platform to flow at? |
75 GPMS |
|
All elevating platforms must have a minimum load capacity of? With water in piping system what is the load capacity? |
750 lbs dry 500 lbs full load |
|
Elevated platforms that are 110 feet or shorter should be able to rotate from the bedded position to max elevation and extension in how many seconds? |
150 seconds |
|
There is no time limit for full extension and rotation for what sized elevating platform? |
110feet or higher |
|
The working height for aerial ladders is measure from ? |
The ground to the highest ladder rung |
|
The working height for aerial ladders is measure from ? |
The ground to the highest ladder rung |
|
The working height of all platforms is measured from? |
Ground to the top surface of the highest platform handrail |
|
The working height for aerial ladders is measure from ? |
The ground to the highest ladder rung |
|
The working height of all platforms is measured from? |
Ground to the top surface of the highest platform handrail |
|
Aerial ladder platforms range in size between what? |
85-110 feet |
|
The working height for aerial ladders is measure from ? |
The ground to the highest ladder rung |
|
The working height of all platforms is measured from? |
Ground to the top surface of the highest platform handrail |
|
Aerial ladder platforms range in size between what? |
85-110 feet |
|
What configuration is the most common ladder platform in service today? |
Straight chassis, three axle, rear mounted aerial device |
|
What are aerial and telescoping platforms not intended for? |
Climbing |
|
In North America, telescoping aerial platforms range from? |
75 - 100 feet |
|
A mechanically applied rivet used in the construction of some aerial devices, they can only be removed by drilling |
Huck bolt |
|
Telescoping aerial platforms are made of what two constructions? |
Box-beam Tubular truss beam |
|
Telescoping aerial platforms are made of what two constructions? |
Box-beam Tubular truss beam |
|
Standard articulating aerial platforms range in height of? |
55 - 85 feet |
|
Telescoping aerial platforms are made of what two constructions? |
Box-beam Tubular truss beam |
|
Standard articulating aerial platforms range in height of? |
55 - 85 feet |
|
Water towers are capable of flows ranging from? |
1,000-5,000 gpm |
|
Telescoping aerial platforms are made of what two constructions? |
Box-beam Tubular truss beam |
|
Standard articulating aerial platforms range in height of? |
55 - 85 feet |
|
Water towers are capable of flows ranging from? |
1,000-5,000 gpm |
|
Common sizes for water towers range in height? |
50-130 feet |
|
On most aerial devices, the third, fourth, and fifth sections of the aerial devices are extended and retracted by a system of what? |
Cable and pulleys |
|
The cables and pulleys used to extend and retract sections of aerial are made of high strength steel called? |
Plow steel |
|
This does not allow aerial device to rotate over the side of the apparatus where the stabilizers are not fully extended: |
Rotation interlock (Short jack) |
|
This doesn’t allow cab to raise if the engine is running: |
Cab interlock |
|
This doesn’t allow cab to raise if the engine is running: |
Cab interlock |
|
What are the two types of pre-piped waterway systems on aerials. |
Bed ladder systems Telescoping waterway systems |
|
What is the average diameter range of a bed ladder pipe? |
3-3.5 inches |
|
What is the minimum internal diameter of piping for a telescoping piping system? |
4 inches |
|
What is the minimum internal diameter of piping for a telescoping piping system? |
4 inches |
|
Most telescoping water systems are capable of flows of up to? |
1,000 GPMs |
|
Detachable ladder pipes are typically limited to flows of less than? |
750 GPM |
|
Hoses advanced up a ladder should be secured by hose straps a minimum of how many locations? |
2-3 locations |
|
Most ladders with detachable ladder pipe appliances restrict the sideways movement of the nozzle to about how any degrees either side of center? |
15 degrees |
|
The piercing nozzle at the end of an aerial device has the capabilities of flowing water of up to? |
300 GPM |
|
Portable generators typically have how many volt capabilities? |
110 volts 220 volts |
|
Inverters convert vehicle’s 12 or 24 volt DC current into what? |
110 or 220-volt AC |
|
Common recommended lengths of electrical power chords should not exceed? |
200 feet |
|
With hydraulic tools, hose distances of what may have a negative effect on tool operation? |
100 feet or more |
|
Extension ladders that are 40 feet in length or longer are called? What are they equipped with for stability? |
Called pole ladders Staypoles or tormentors for stability |
|
Loss control on a fire starts when? |
The minute companies leave the station and continues throughout the incident |
|
NFPA 1901 requires aerial apparatus to be equipped with what items to assist with salvage and overhaul efforts? |
Multiple salvage covers 2 scoop shovels |
|
Tiller axle is a steering axle, steering wheel free play must not exceed how many inches on a 20 inch wheel? |
2 inches |
|
Tiller axle is a steering axle, steering wheel free play must not exceed how many inches on a 20 inch wheel? |
2 inches |
|
On tiller axle, steering wheel free play must not exceed how many degrees on steering wheel? |
10 degrees |
|
Hydraulic fluid level must be checked when the system is? |
Cold |
|
If truck begins to lean toward one side after stabilizers have been deployed, what may be the problem? |
Leak |
|
If truck begins to lean toward one side after stabilizers have been deployed, what may be the problem? |
Leak |
|
What is operating a hydraulic pump without allowing flow through the system which can generate tremendous heat and pressure and can damage components : |
Deadheading |
|
If truck begins to lean toward one side after stabilizers have been deployed, what may be the problem? |
Leak |
|
What is operating a hydraulic pump without allowing flow through the system which can generate tremendous heat and pressure and can damage components : |
Deadheading |
|
Apparatus testing is grouped into two basic categories : |
Pre service test Service test |
|
Method of testing metal objects that does not subject them to stress related damage : |
Nondestructive testing |
|
Method of testing metal objects that does not subject them to stress related damage : |
Nondestructive testing |
|
Nondestructive testing is conducted when? X4 |
Every 5 years Subjected to unusual stress or loads Major repairs or overhauls After accidents |
|
When 2 aerials respond to an incident, what are their locations to a building according to arrival order? |
1st takes front of building 2nd takes rear or side of building |
|
What are the two impacts of positioning aerial with the front of apparatus up-hill? |
Rear tires off ground, less resistance to sliding downhill Rear compartments are difficult to reach after leveling |
|
What are the two impacts of positioning aerial with the front of apparatus up-hill? |
Rear tires off ground, less resistance to sliding downhill Rear compartments are difficult to reach after leveling |
|
What are the two impacts of an aerial positioning with the rear of the apparatus up-hill? |
It will be easier to reach ground with a platform operating off rear Front tires will be lifted off ground, causing frame rails to sag and making device difficult to stow properly |
|
Electricity will arc across a gap as large as how many feet? |
10 feet |
|
10 feet clearance between aerial device and overhead voltage lines energized from the range of? |
600-50,000 volts |
|
How many feet of clearance between an aerial device and high-voltage line over 50,000 volts? |
50 feet |
|
The new standard from OSHA between aerial and overhead voltage lines of less than 350 kilovolts is how many feet? |
20 feet |
|
The apparatus is most stable when the aerial device is operated where? |
Directly over front or rear of the vehicle |
|
The apparatus is most stable when the aerial device is operated where? |
Directly over front or rear of the vehicle |
|
Greatest stability occurs when jackknifing cab of tractor trailer aerial device to how many degrees from vehicle being in-line? |
60 degrees |
|
When approaching building from uphill side, the apparatus should stop where from building? |
Park past building and operate aerial device from the rear |
|
When approaching building from uphill side, the apparatus should stop where from building? |
Park past building and operate aerial device from the rear |
|
When approaching building from down-hill side, apparatus should stop where? |
Stop short of the building and operate aerial over the cab |
|
On highways consider parking additional apparatus range of how many feet behind the shielding apparatus to act as an additional barrier between firefighters and flow of traffic? |
150-200 feet |
|
Most railroad companies advise that vehicles be kept at least how many feet from track? |
25 feet |
|
Where do you position tip of ladder device on aircraft wing? |
Place tip of the device as if accessing a building roof |
|
Where do you position tip of ladder device on aircraft wing? |
Place tip of the device as if accessing a building roof |
|
Where do you position tip off ladder device in doorway of aircraft? |
Position tip as if accessing a building window |
|
Straight jacks that extend down from the chassis |
Post-type stabilizer |
|
Straight jacks that extend down from the chassis |
Post-type stabilizer |
|
Stabilizers that extend straight away from the truck and have jacks that extend straight down to the ground |
Box stabilizers |
|
Straight jacks that extend down from the chassis |
Post-type stabilizer |
|
Stabilizers that extend straight away from the truck and have jacks that extend straight down to the ground |
Box stabilizers |
|
Stabilizers that extend down and away from the chassis at an angle |
A-Frame, scissor, or X-style stabilizers |
|
Pneumatic systems require anywhere from home much pressure range for the PTO to be operated? |
50-140 psi |
|
Pneumatic systems require anywhere from home much pressure range for the PTO to be operated? |
50-140 psi |
|
Most new models of aerial apparatus are equipped where it is acceptable to engage the PTO system when the transmission is in neutral? |
Hot shift |
|
Chocks should be placed in front or behind a wheel and allowing how much space in between wheel and chock in case wheel moves? |
1 inch |
|
Stabilizer pads are usually how large? |
24X24 |
|
Stabilizer pads are usually how large? |
24X24 |
|
There are two ways that the truck can be uneven, laterally or longitudinally. Which of the two is easiest to correct? |
Lateral unevenness |
|
Stabilizer pads are usually how large? |
24X24 |
|
There are two ways that the truck can be uneven, laterally or longitudinally. Which of the two is easiest to correct? |
Lateral unevenness |
|
Correction of lateral unevenness is possible of grades of up to what percent? |
5% |
|
Stabilizer pads are usually how large? |
24X24 |
|
There are two ways that the truck can be uneven, laterally or longitudinally. Which of the two is easiest to correct? |
Lateral unevenness |
|
Correction of lateral unevenness is possible of grades of up to what percent? |
5% |
|
A slope of 5% means that their is a rise in terrain of how many feet per 100 feet? |
5 feet |
|
Aerial devices operating on grades will have restricted loads of up to how much the normal operating load on device? |
1/2 the normal load |
|
What prevents the flow of hydraulic fluid into or out of the stabilization system while the aerial device is in use? |
Interlock |
|
What prevents the flow of hydraulic fluid into or out of the stabilization system while the aerial device is in use? |
Interlock |
|
Which valves prevent the movement of hydraulic fluid within the stabilizing system? |
Holding valves |
|
Holding valves are activated on the stabilizing system once the selector switch is moved to where? |
Aerial position |
|
Driver should never position the vehicle with tractor and trailer at an angle greater than how many degrees? |
90 degrees |
|
Standard on Life Safety Rope and Equipment for Emergency Services |
NFPA 1983 |
|
Because of forces being generated, all movements of an aerial device must be slow,smooth and controlled also know as? |
Feathering |
|
Because of forces being generated, all movements of an aerial device must be slow,smooth and controlled also know as? |
Feathering |
|
There are two type of articulating aerial apparatus : |
Water towers Aerial platforms |
|
What is the quick guideline for a quick ladder pipe use? |
75-80-80 75 degree elevation 80% extended 80 psi |
|
What is the quick guideline for a quick ladder pipe use? |
75-80-80 75 degree elevation 80% extended 80 psi |
|
Newer ladder pipes offer a how many degree sweep of movement? |
180 degree |
|
The limit of ice build up allowed by NFPA 1901 on apparatus is how much? |
1/4 inch on all surfaces |
|
15-24 mph |
Small trees in motion; whitecaps visible on ponds and small lakes |
|
15-24 mph |
Small trees in motion; whitecaps visible on ponds and small lakes |
|
25-31 mph |
Large tree branches in motion; whistling heard in utility wires |
|
15-24 mph |
Small trees in motion; whitecaps visible on ponds and small lakes |
|
25-31 mph |
Large tree branches in motion; whistling heard in utility wires |
|
32-38 mph |
Whole trees in motion; inconvenience felt walking against wind |
|
15-24 mph |
Small trees in motion; whitecaps visible on ponds and small lakes |
|
25-31 mph |
Large tree branches in motion; whistling heard in utility wires |
|
32-38 mph |
Whole trees in motion; inconvenience felt walking against wind |
|
39-54 mph |
Twigs break off trees; walking against the wind is generally impeded: minor building damage |
|
In freezing wether, draining valves must be kept in what position to avoid damage? |
Open |
|
1 cubic inch of ice is how many pounds? |
0.03 lb |
|
Slowly extending and retracting the aerial device to remove accumulated ice is called? |
Ice shrugging |
|
Standard for the Inspection, Maintenance, Testing, and Retirement of In-Service Automotive Fire Apparatus |
NFPA 1911 |
|
One type of aerial device suitable for below grade rescue operations is? |
Three boom articulating platform |
|
Successful communications for aerial operations include what three things? |
Pre-Arrival communication On Scene communication Tactical Communication |
|
What are the two advantages of positioning on a corner with aerial device? |
Safe from collapse Access to two sides of building |
|
What are the two advantages of positioning on a corner with aerial device? |
Safe from collapse Access to two sides of building |
|
Where should the tips of ladder be in a supported position? |
Ladder should be positioned so both rails are evenly in contact with the supporting object |
|
What are the two advantages of positioning on a corner with aerial device? |
Safe from collapse Access to two sides of building |
|
Where should the tips of ladder be in a supported position? |
Ladder should be positioned so both rails are evenly in contact with the supporting object |
|
Where should the tips of ladder be in unsupported position? |
Tip should be placed above the target spot to keep it from contacting the building |
|
What is used to increase the overall strength of an extended device and greatly reduces the chance of failure? |
Extension locks |
|
Where should the ladder be placed at window sill when performing a rescue from window? |
First rung even with the widow sill |
|
Where should the ladder be placed at window sill when performing a rescue from window? |
First rung even with the widow sill |
|
When approaching a window with a platform, where should the platform be placed? |
Top rail of the platform even with the window sill |
|
When removing victims from a roof, the tip of the aerial ladder should be placed so at least how many feet extends above the edge of the roof? |
6 feet |
|
When removing victims from a roof, the tip of the aerial ladder should be placed so at least how many feet extends above the edge of the roof? |
6 feet |
|
When removing victims from a roof, the aerial platform should be placed where? |
Bottom of platform is just above and over the edge of the roof |
|
What is the best method used to carry a heavier person who is conscious down a ladder? |
Knee-sit method |
|
What is the best method used to carry a heavier person who is conscious down a ladder? |
Knee-sit method |
|
Water deflection performed with an aerial can be accomplished by positioning the aerial device so that the nozzle is about even with the bottom of the window. This position allows water to enter the area at what angle? |
30 degree angle |
|
Water adds weight to a structure at the rate of 2,000 pounds every how many GPMS? |
250 GPM |
|
When elevated master streams are used in a blitz attack, they should only be flowed long enough to do what? |
Darken down the fire |