nterior attack Fire academy FF1

Interior attack Fire academy FF1 The reaction of wood to fire conditions depends mainly on two factors: - ✔✔Size of the wood and its moisture content What needs to occur before committing firefighters to a basement fi ...

Interior attack Fire academy FF1 The reaction of wood to fire conditions depends mainly on two factors: - ✔✔Size of the wood and its moisture content What needs to occur before committing firefighters to a basement fire? - ✔✔Check for structural integrity of the first floor. The objective of an indirect fire attack is to: - ✔✔Quickly remove as much heat as possible Water normally extinguishes fire by: - ✔✔Cooling at 212 Degrees F, a cubic foot of water expands to approximately _______________ times its original volume when concerted into steam - ✔✔1700 A hose roller is a: - ✔✔Curved metal frame that fits over the edge of a roof or windowsill. Which statement concerning automatic adjusting fog nozzles is true? - ✔✔The amount of water flowing through the nozzle is adjusted to maintain the rated pressure. The four elements that make a fire stream are a pump, water, nozzle, and: - ✔✔Hose The type of construction where the exterior walls and structural members are made of noncombustible or limited combustible materials and the interior is completely or partially made of wood is: - ✔✔Type III construction A water hammer is: - ✔✔The pressure surge that occurs when water valves or nozzles are rapidly opened or closed In wood trusses, d the _______________ connects and hold the truss in place. - ✔✔Gusset plate Attack and supply hose may be equipped with what type of coupling? - ✔✔Threaded and nonthreaded Firefighters assisting with a working line drag (Hose drag) should place the hose ______________ with the coupling _____________ - ✔✔Over the shoulder, in front Of the four fire stream volumes listed below, select the one that is most likely supplied by a single 2-1/2 inch hose. - ✔✔125 - 350 gpm The Higbee indicator/cut is (notch): - ✔✔Utilized for aligning the male with the female coupling. Devices used in conjunction with fire hose through which no water passes are: - ✔✔Tools One advantage of a smooth-bore nozzle is: - ✔✔It provides an extended reach When utilizing the direct attack, the team should flow water until the - ✔✔Heat drops rapidly Water for fire streams is converted to steam at _________ degrees Fahrenheit and expands approximately ________ times - ✔✔212, 1700 Water being discharged from a nozzle under pressure producing a force on the nozzle operator is: - ✔✔Nozzle reaction A stream discharging more than 350 gpm is now as: - ✔✔A master stream Which statement concerning automatic constant pressure nozzles is correct? - ✔✔The nozzle person can change the flow rate by opening and closing the shut-off valve. The primary purpose of a spanner wrench is for use in: - ✔✔tightening/loosening hose couplings During firefighting activity, a firefighter can lose two quarts of fluid in: - ✔✔One Hour The most efficient use of water on localized interior fires is made by the ____________ attack on the base of the fire. - ✔✔Direct What does the E stand for in Lower _________________ Limit (LEL). - ✔✔Explosive When descending basement stairs, you should advance: - ✔✔Feet first Concealed spaces can be created when a second roof is constructed over an older roof. The 2nd roof is a: - ✔✔Rain roof The quickest way to move fire hose at ground level is the: - ✔✔working line drag Prior to entering a fire area with a charged hose line, the nozzle operator should first: - ✔✔bleed air from the line. A common factor with regard to firefighter deaths at emergency incidents is: - ✔✔Overexertion which tactic can push hot gases and steam down near the floor and cause serious steam burns to fire fighters? - ✔✔Indirect attack When advancing a dry line, it is recommended that you Carry the coupling by: - ✔✔Placing the hose over the shoulder with the coupling or nozzle in front. The first due engine company's purpose on the fire scene is: - ✔✔Fire suppression The type of construction that presents the most hazard due to use of plywood I-beams is: - ✔✔Type V The broken stream is often useful for: - ✔✔Attics The function of the door positioning on an attack hose line is to: - ✔✔Be responsible for feeding more hose into the building To achieve extinguishment, sufficient water must be applied to - ✔✔Absorb heat faster than it is being generated To be effective, the department safety program must be: - ✔✔Promoted and practiced at all levels When advancing a hose line into a structure fire, the fire firefighter on the nozzle and the backup firefighter should be: - ✔✔On the same side of the hose line: When advancing a dry hose line up a ladder, firefighters should position themselves on the ladder: - ✔✔With NO more than one firefighter per section To properly operate a fire hose nozzle valve, it should be: - ✔✔Opened and closed slowly To reduce pressure loss due to friction, what should be accomplished? - ✔✔Use larger diameter hose or multiple hoses The movement of a fire to exposed buildings is: - ✔✔Spread/extension To safely operate a hose line from a ladder, the hose should be: - ✔✔Secured to the ladder Which statement regarding solid streams is correct? - ✔✔Solid streams have greater penetration power A 50 foot steel beam will elongate as much as ___________ inches when heated from room temperature to about ____________ degrees F - ✔✔9, 1000 Once rested and rehydrated, firefighters can be released from rehabilitation and: - ✔✔Reassigned Under fire conditions, which building will present a greater potential for building collapse: - ✔✔Lightweight wood-frame construction The chemical decomposition of a substance through the action of heat is: - ✔✔Pyrolysis Which statement regarding fog nozzles is correct? - ✔✔Fog streams move large volumes of air along with the water When moisture in concrete is heated to steam and expands: - ✔✔Spalling When performing an indirect attack, once the fire has been darkened down and the space has been ventilated, you should: - ✔✔Advance hose to extinguish hot spots Toxic products of combustion can be deadly and are present in the: - ✔✔Overhaul phase In wood trusses, the weakest point that will warp and fail quickly when exposed to heat is the: - ✔✔Gusset plate Which of the following is classified as a carcinogen? - ✔✔Formaldehyde One way to identify the physical structure of a male coupling is by the: - ✔✔Lugs on the shank The Three physical state of fuel/matter are: - ✔✔Solid, liquid, Gas In a multi-story building with a standpipe system, a firefighter should make the connection _____________ the fire floor - ✔✔On the floor below Devices through which water flows, used in conjunction with fire hose, such as a gate valve, are: - ✔✔Appliances During the time a stream of water passes through space, it is influenced by velocity, __________________ , wind, and friction with air - ✔✔Gravity The leading cause of firefighter fatalities on duty is: - ✔✔Cardiac arrest Firefighters risk of injury or collapse increases as they: - ✔✔Become tired and/or dehydrated Most landlines with smooth-bore nozzles are designed to operate at a nozzle pressure of ______________ PSI - ✔✔50 Which assignment is commonly performed by the second team at a fire? - ✔✔Establishing water supply The main difference between Types I and II construction is that: - ✔✔Structural components lack insulation and protection. When used for interior firefighting, a particular hazard of the _____________ stream, when used for interior firefighting, is that it can actually force super-heated gases and air into unburned areas - ✔✔Fog There is a maximum reach to any fog stream and any further increase in nozzle pressure will only increase: - ✔✔Volume Fire stream types are generally classified as: - ✔✔Solid, fog, and broken stream In obscured visibility conditions, the direction of the seat of the fire may sometimes be deduced by a sensation of heat coming from a certain direction or by a: - ✔✔Crackling sound When advancing hose through doorways: - ✔✔Secure the door in the open position which statements regarding fog nozzles is correct? - ✔✔Adjustable fog nozzles provide a wide fog pattern Fog master streams are generally operated at __________ PSI nozzle pressure - ✔✔100 A fire stream used in an indirect attack in a structure fire should be shut down before: - ✔✔Thermal layering is disturbed A long-term consequence of exposure to asbestos products of combustion is: - ✔✔Cancer Nozzles with flows in excess of _____________ gallons per minute are not recommended for handlines - ✔✔- 350 Drinks like colas, coffee and tea should be avoided as rehabilitation fluid replacement drinks because they contain: - ✔✔caffeine The mixture of fuel vapor to air that will ignite when subjected to an ignition source is the: - ✔✔Explosive/flammable range In Type I construction, the fire hazard is: - ✔✔The contents One of the body area that is most vulnerable to injury when exposed to products of combustion is the - ✔✔- respiratory tract Standard nozzle pressure for a solid-stream, master-stream device is considered to be ______________________ PSI - ✔✔80 _____________________ is the rapid transition between the growth and fully developed stages of fire. - ✔✔Flashover When water flowing through a fire hose or pipe is suddenly stopped, the resulting surge is: - ✔✔A water hammer When firefighters are unable to enter the fire area due to intense fire conditions, the _______________ attack can be made. - ✔✔Indirect When a section of hose has burst and no hose clamp is available: - ✔✔Shut off the water by making two bends in the hose When should the firefighter at the hydrant charge the supply line? - ✔✔When signal is received The most common injuries for firefighters are: - ✔✔strains Fine water droplets and maximum high water surface area are characteristics of a __________________ stream. - ✔✔Fog Which is the method for preventing mechanical damage to fire hose? - ✔✔- Avoid closing the nozzle abruptly The systems in high-rise buildings that deliver water from the outside up to fire hose outlets on each floor are: - ✔✔Standpipe Cellar distributor nozzles operate by: - ✔✔Applying water in a circular spray pattern What function during rehabilitation would identify problems? - ✔✔Medical monitoring What effects does evaporative cooling have on firefighters in high humidity? - ✔✔It makes it more difficult for the body to regulate its internal temperature nozzles controls, hydrants, valves, and hose clamps should be operated _________________ to prevent a water hammer - ✔✔slowly Which statement regarding solid streams is correct? - ✔✔- Smooth-bore solid stream nozzles operate at lower pressures The type of appliance used to attach homeliness of differing diameters is: - ✔✔A reducer In reference to a fire stream, friction loss is: - ✔✔That part of the pressure that is used to overcome friction in the hose. A ceiling-level attack, along with an application of the fire stream on a material burning near the floor level, is: - ✔✔A combination attack The Bresnan distributor nozzle is used primarily for what type of fire? - ✔✔Basement/cellar fires The strategy of the incident includes: - ✔✔Offensive or defensive modes