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147 Cards in this Set
- Front
- Back
when responding to and ordor of smoke in a commercial occupancy, a telephone exchange, or a building that houses a transformer, what hazard may be present in the burning insulation?
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dangerous smoke, pcb or pvc giving off hydrogen chloride.
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at an odor of smoke call, a flickering , dim, or nonfunctional fluorescent lamp can indicate that the (blank), is heating up.
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balast.
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it is possible, in ballast devices manufactured before 1979, that the capcitator contains a small amount of (blank) - contaminated dielectric fluid.
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pcb
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true or false--removing a fluorescent lamp smaller than eight feet will stop the flow of electricity.
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false
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underwriters laboraories didn't reuire thermal protection for approved recessed lighting until what year?
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1982
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since the smell of overheating rubber mimics that of an electrical problem you should consider checking ________ or_______ at an electrical odor call.
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belts or appliances.
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if you suspect that ignited lint is the source of a smoke condition, you'll have to check both the clothes dryer itself and the entire run of the _________.
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duckwork.
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true or false: some new meters may be removed without interrupting the flow of electricity into the building.
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true
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a noninvasive way to check behind a wall for hot wires, smoldering beams, or acitve flaming is to use a _______.
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tic
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in a residential building will opening the main switch necessarily cut off all power to the home?
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no
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true or false: a loose wire in a junction box may cause overheating in another box, provoking a fire remote from the cause.
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true
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does aluminum siding pose a threat of shock hazard?
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yes
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name 4 dangers associated woth spraying water on a burning pole mounted transformer.
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1. explosion
2. arcing 3. electrocution 4. pcb contamination. |
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is it entirely safe to use a rope or a wooden pike pole to remove a downed power line from a vehicle?
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no
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if, at the request of the utility company, the decision is made to flood an electrical manhole, the proper procedure you should follow is to____
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flood with unmanned butt o hose at low pressure.
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the major problem experienced with electrical manholes in the northeast is deterioration due to _______
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salt
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the most common home- heating fuels are _____ and _____.
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oil and gas
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based on its viscisity, fuel oil is seperated into how many grades?
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6
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to ignite the fuel oil in the combustion chamber of an oil burer, the fuel is _______, thus increasing its surface area.
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atomized
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safety devices allow an oil burner pump to operate for no more than ______ seconds if no flame is present.
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90
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the capacity of a ful tank in a typical residential building is______ gallons.
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275
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this oil burner emergency occurs when unburned atomonized fuel is ignited at the start of the burn cycle, resulting in an explosion.
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delayed ignition.
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the burning of pooled oil in the combustion chamber after the burner has shut down is known as ___________.
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after fire
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this condition occurs when the flame repeatedly jumps away from and then returns to the burner nose cone.
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pulasation
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since the white ghost is a potentially explosive situation, you should treat it as a _________.
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gas leak
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on arrival at an oil burner emergency, should you close the furnace door if you find it open?
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no
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after shuttiing down the power and the fuel supply valve, what is the proper way to extinguish a fire in the conbustion chamber of an oil burner?
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Let it burn out
foam dry chemical |
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if smoke is filling the burner room accompanied by an oily odor, suspect _____________.
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white ghost
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the primary thret of an oil spill in a basement is that the vapor will______.
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ignite
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typically, on residentio water heaters, the temperature-pressure valve will function if the water reaches____degrees F or if the pressure exceeds_______psi
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210
150psi |
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name 2 symptoms of a defective temperature-pressure valve
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water flow from discharge,
steam from faucet. |
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the natural gas intended for domestic use contains 70-90% _____ with______ making up most of the remainder.
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methane
ethane |
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although natural gas is nontoxic it can cause death by______.
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suffication
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typically, the odorant added to natural gas is _________.
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mercaptan
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natural gas is about _____ as dense as air.
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2/3
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high-pressure gas transmission lines can be pressurized to as much as ______psi.
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350
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each end user has a gas regulator installed to lower the pressure down to a usable pressure of about____ psi
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1/4
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the main danger of having water ion a gas line is that it can _____in the same manner as an air slug.
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flameout
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for every increase in temperature of 459 degrees F, the volume of air_________.
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doubles
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to some extent odorants can be absorbed by iron gas pipe, but only when the pipe is ______.
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new
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device that enables you to detemine not nly that natrual gas is present byt also its concetration and whether or not it is within its flammable range?
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digital flammable as detector
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name tow probable results of excessive gas flow to an appliance.
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flame above burner or flame out
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blocked burner ports, accumulated dirt, and low gas pressure can all result in _________
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delayed ignition
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when responding to an interior gas leak, you should positio apparatus defensively against______ and ________.
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collapse and explosion
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true or false: the hazards associated with a propane gas leak are different from those of a natural gas leak.
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true
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in the case of a slight leak, is a gas indicator likely to give accurate results if you slip the probe underneath the door of a locked apartment? why?
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no
gas will rise higher unless propane |
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the shut offfound on the supply side of a gas meter is known as a _______.
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wingcock
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true of false: since metal pipe is conductive, gas leaking from a metal pipe poses a static electricity hazard.
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false: plastic piping poses the hazard
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is it possible to stop the flow of gas from a small plastic pipe by folding the pipe over on it self?
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yes (watch the static)
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fresh water weighs approx._____ pounds per cubic foot at ______ degrees F.
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62.4 lbs
40 degrees |
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by weight how much water will be on a 30 by 45 foot roof if the water level is 3 inches deep?
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L x w xD
30 x 45 x .25 equals 337.5 cubic feet. now 337. x 62.4= 21,060 pounds |
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when siphoning water off a roof, the author recommends that you use a length or two of one inch rubber booster line since it will not________.
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kink
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one disadvantage of using an eductor is that it requires that a __________ be left at the scene of a dewatering operation.
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firefighter
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describe what may happen if rising water meets an electrical outlet.
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may trip breaker and electrocute.
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true or false: while poking a sagging plasterboard ceiling o reliever the buildup of water above it, you should use the handle of the pike pole.
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true
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True or False: dewatering a flooded basement removes the threat of electrocution.
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false
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is it possible to shut down a hydrant to quickly? why or why not.
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yes, water hammer
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when called to the scene of a reported main break, what should your first action be?
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verify leak is from main, verify sources
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explain why, if source of the street flooding isn't obvious, you should search for the location of a broken water man on foot.
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possible holes and weight of apparatus.
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stopping distance for passenger vehicles at 60 mph
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162-202feet
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total stopping distance for passenger vehicles at 60 mph
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add reaction time to stopping distance. 66 feet
228-268 feet |
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a fire fighter should treat every vehicle fire as a potential_____________
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haz mat incident
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to avoid the hazard of shock-absorbing bumpers, how should you approach a burning vehicle?
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from the sides
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what 2 gases are formed within a battery as it charges?
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hydrogen and oxygen
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the explosive range of hydrogen is from _______percent to _______ percent
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4-71
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in some vehicles, particulary those with ______ engines, ther may be more than onw batery.
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diesel
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what is the principle hazard associated with the fuel lines of modern fuel injected vehicles?
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pressurized fuel lines
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are power steering fluid and automatic transmissio fluid flammable?
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yes
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a fire impinging on a propane cylinder may lead to what type of explosion?
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blevie
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can a fuel tank of a vehicle powered by compressed natural gas experience the same type of explosion as a propane tank?
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no.. it does not contain liquid
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the author recommends thoroughly searching the trunk at every incident. but particularly under what condition?
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abandoned vehicle
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normally!!if the burning vehicle is on a slope, you should place the apparatus ahead or below it.
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ahead
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name two ways to introduce water into the trunk besides opening or cutting the lid.
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tail light or back seat
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treat a car burning inside a garage as a _________ fire.
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structure
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how can a vise grip be used to hold up a garage door?
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clamp the door track to hold the door open
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when setting out flares to warn traffic of an incident site, how should they be placed?
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space out beyond estimated total stopping distance, direc away from fire operations.
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when responding to a food on the stove call, the type of incident that you encounter depends in large degree on___________
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what is being cooked.
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true or false: the method of forcible enty used at a food on the stove incident shuold be in strict accordance with SOP's so as to protect the department against legal action.
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false
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if yo receive a number of calls foe an odor of smoke at a multifamily residence need you check out each one?
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the reported occupancy and the location of the calling party. yes!
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smoke from a burning food probably contains nitrogen dioxide. name some of the symptoms of no2 poisoning.
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nausea, headaches
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what is perhaps the best way to ope a double-sash window to ventilate an apartment?
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2/3 out the top and 1/3 out the bottom
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if a firefighter encounter heat while searching for victims and the surce of the smoke, it is an indication that________________________
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there is more that a food on the stove emergency.
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is extension a possibility if you find a pot that is only smoking?
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yes. flame could have burned out prior to your arrival and extended.
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true or false: spraying water into a pan of burning cooking oil may cause the oil to splatter, but will suppress the flames.
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false
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is a glass of water enough to put out a fire in an oven?
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yes, if you close the door and shut off the gas.
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if the shutoff typically found before the flexible connector was involved in the fire doesn't work then you should __________
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shutoff gas at meter.
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after extinguishing a mattress fire in an apartment, where must you search?
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the entire apartment, walls, ceiling, adjoining apartment, and the apartment above.
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even after ousing a mattress fire with an extinguisher, you should________________
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soak the mattress with a hand line.
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to thoroughly extinguish a smoldering mattress, you should_______
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cut open mattress to extinguish fire at the core.
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true or false: extinguishing the fire in a foam mattress will curtail the generation of combustible gases.
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False.
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to avoid an eruptionof flames when pushing a mattress out a window, how should you prepare the mattress?
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fold the mattress in half so that the burned side is toward the fold.
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true or false: it is advisable to use an elevator when that is the fastest way to get a burned mattress out of the building.
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false
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what is the bes way to stay our of the smoke if , for whatever reason, you aren't equipped with a scba at a rubbish fire?
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keep the wind to your backand utilize the reach of your hose stream.
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why isn't the type of occupancy and adequate indication of the hazards associated with a fire in the dumpster out back.?
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illegal dumping can occur.
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true or false: because of he many void spaces in trash, it is better to overhaul a dumpster fire manually than hydraulically.
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false
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the primary life hazard at a dumpster is that of _________
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fire crew
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perhaps the best way to overhaul a pile of automobiles at a junkyard fire is ti use _______ in conjunction with hydraulic overhaul techniques.
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a crane
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the author mentions a simple way of identifying holes in the floors and stairways of derelict buildings. what is it?
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shine light through the bottom of holes up.
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when directing a master stream into a derelict building, how can an incident commander judge whether too much water is collecting in or being absorbed by the structure
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water should be pouring out structure
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what is the purpose if marking a derelict building?
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alert other responders crews to the condition of buildings.
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carbon monoxide has more than____times the affinity for hemoglobin as oxygen.
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200
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true or false: although urning oil and propane are well know to produce carbon monoxide, natural gas does not.
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false
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UL has set the minimums for CO detectors in its standard know as __________
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ul 2034
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why wasn't CO poisoning in the home as much of a recognized problem prior to the 1970's as it is today> give 2 reasons.
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rising fuel prices, and older buildings were not as tighly sealed as they are now.
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by current statistics, how many deaths in the united states are attributable to carbon monoxide poising each year? how many?
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1,500 deaths and 10,000 illnesses
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a hemoglobin molecule has how many binding sites for oxygen/
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4
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as the body is deprived of oxygen, the body tries to compensate by increasing the______ rate.
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respiration or breathing
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given continues exposure to carbon monoxide, a person's COHb level will rise until equilibrium is established with________
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ambient level of co
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a 3 percent COhb evel at a mere 1,400 feet is equivalent to ____ percent COhb at sea level.
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20
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the smaller the victims body mass, the _____ and _______ the effect of CO on his system.
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greater , faster
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wht tissues of he body are the most quickly and most adversely affected by carbon monoxide?
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heart and brain
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is cherry red coloration of a suspected victim a reliable indicator of CO poisoning?
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no
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mild CO poisoning mimics the symptoms of ____
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flu
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with 100 percent o2 and a tight fitting mask, the half-life of blood stream CO drops to about______
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80 minutes.
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true or false: hyperbaric patients can later suffer a relapse as CO is slowly released from muscle tissue.
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true
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the vapor density of carbon monoxide is
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0.96
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the explosive range of carbon monoxide is ___to_____
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12.5 - 74%
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______fuels crate the most carbon monoxide, ____fuels generate less, and ____fuels produce the least.
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solid, liquid,gas
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why will a cold pot temporarily increase the formation of CO WHEN IT IS PLACED on the burner of a gas stove?
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becasuse it lowers the temp of the flame
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before reaching operating temperature, a gas oven can give off as much as ___ppm of carbon monoxide.
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800
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what is reverse stacking?
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down draft mechanically induced
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according to the test, a car that hasn't been warmed up can initially give off ____ppm or mor of carbon monoxide
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30,000
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how many us homes are currently equipped with CO detectors percentage wise?
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6
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who should determine exactly how many ambulances are needed when dispatch receives a call for a CO emergency?
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first on scene fire officer
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true or false: the amount of CO THAT SETS Off an alarm would usually, given time, be lethal.
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false
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to detect low level sources it is important that a firefighter use a CO meter capable of sensing gas levels from__ppm to at least___ppm and preferably___ppm.
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0,200,999
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which government agency sets the most stringent standards for acceptable levels of CO?
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epa
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when interviewing an occupant at a CO response, you should first take readings________
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at the door.
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if after a thorough search of the house for CO and defective appliances, you find nothing, you should ______
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recreate
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a carbon monoxide meter that can record CO activity in a home over time and later download the information into a computer is called a ____ ______.
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data logger
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a gas flame that isn't properly adjusted and is giving off excess CO will be what color?
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yellow or orange
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what sort of detector absorbs ambient CO and is based on a synthetic hemoglobin contained in a small gel cell?
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biometic
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the more CO that the gel cell absorbs, the _____it gets
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darker
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is the color of the nodule a sufficient indicator o tell whether a CO detector is of an old or new design?
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yes..older models are white, newer ones are white with contrasting lettering.
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in a semiconductor detector, o2____the electrical resistance of the tin dioxide sensor, whereas carbon monoxide_______it.
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decreases. increases
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what is the power source used for a semiconductor detector?
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110 volt, plugged or wired
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as semiconductors age do they become more or less sensitive?
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more
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semiconductor detectors may react to high levels of ________as if they had been exposed to CO.
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natural gas
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this type of detector is composed of three electrodes in a pastel ike electrolyte and a membrane that is porous only to gas.
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aim-electromechanical
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the typical life span of any carbon monoxide detector is about__years.
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5
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originally published in April 1992, UL 2034 was revise in Oct. of what year?
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1995
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the 1192 version of the standard required that the detectors sound an alarm when the CO present in the air would cause the COHb in a healthy adult to reach__percent.
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10
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at 400 ppm, UL 2034 requires a CO detector tosound an alarm within what length of time?
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15mins
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true or false: UL requires that a detector pass the rush-hour test for how many days in a row?
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30
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does the revised standard require all CO detectors to have a reset button?
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es
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the IAS stanard requires that an alarm not sound before the occupants COHb levels reach __percent.
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5
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true or false: carbon monoxide detectors may be triggered by a thermal inversion.
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true
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