Fire 3 Final
Low-pressure carbon dioxide extinguishing systems can store ______ of carbon dioxide in one large pressure container.
60 tons
According to NFPA 11, standard for Low-, Medium-, and High-Expansion Foam, __________ Forms a flim barrier on the surface of a flammable liquid.
Aqueous film-forming foam
Which of the following classes involve ordinary combustibles?
Class A
In order to avoid corrosion, the foam concentrate tank must be made materials that are __________ with the foam concentrate?
Compatible
Which design utilizes walls, bulkheads, doors, partitions, draft curtains, high ceilings and sealed floor openings to create barriers?
Passive design approach
Which smoke control method creates holding areas for persons who are unable to exit a building without assistance in an emergency?
Refuge area presssurization
Who is responsible for the inspection, testing and maintenance of fire extinguishers to ensure that they will be in working order when needed?
The property owner
Which of the following is a myth that requires further education to dispel the public's opinion of automatic fire sprinkler systems?
They cause more damage than they are worth
What is the purpose of a conductivity test?
To make sure the extinguisher operator is safe from shock potentials on Class C extinguishers
Which of the following extinguishing agents can absorb more heat per pound than just about any other extinguishing material?
Water
smoke control and management systems must interconnect with all of the following systems except what?
intrusion alarm system
which of the following fire sprinkler system components provide a conduit for the water to flow from the water source to the fire sprinkler?
pipes and fittings
Which of the following has been commonly protected by fixed dry chemical extinguishing systems since the early 1950s?
self-serve fuel-pump stations
Wet pipe system
type of sprinkler head is covered with a factory-applied paint or finish that is usually required by an architect, an interior designer, or a developer to achieve a certain look in a building.
In the last 25 years, it has become mandatory that emergency responders be able to _________ from the fire command center.
unlock all doors simultaneously
Open sprinkler heads
used for deluge sprinkler systems in which water must flow from all heads over a large area without waiting for heat to activate them
Which system is a fixed fire protection system that discharges a very fine spray with water droplets that must be 1000 microns or less in size?
water mist system
After how many years should dry chemical agent in stored-pressure containers be replaced to ensure that the system is fresh and ready for operation?
5 years
At how many feet does the smoke level need to be held above?
6 feet
Automatic fire sprinkler system
A network of underground and overhead piping fed by an automatic water supply, that upon activation, uses devices connected to the piping at specific intervals to apply water over a fire area
Which design approach uses mechanical systems to exahust, pressurize, and in particular situation oppose the smoke with forced air?
Active design approach
what is considered to be the main component of the aerosol extinguishing system?
Aerosol generator
which of the following components are used to store wet or dry chemical agents, and are made of metals that will not react with the agent?
Agent storage containers
Creating what between affected fire areas and surrounding unaffected non-fire areas, particularly egress paths, can result in effective smoke control?
An adequate pressure differential
Wet chemical extinguishing agents use water-based solutions mixed with any of the following agents of additives, except;
Aqueous film-forming foam
Which extinguishing agent is effective on Class B and C fires, but has limited use on Class A fires?
Carbon dioxide
After carbon dioxide extinguishing system has discharged, ________ remains in the environment after the carbon dioxide liquid has converted to a gaseous state and the fog created has dissipated, maintaining a non-ignitable environment.
Carbon dioxide gas
Which extinguisher has both the pressurized expelling gas and the extinguishing agent mixed in the same tank?
Cartridge pressure extinguisher
Which fire extinguisher has a pressurized cartridge that, when activated, releases the pressure into the extinguishing agent tank, forcing it out a nozzle or hose?
Cartridge pressure extinguisher
some of the classes of fire extinguishers have numbers in addition to their letter classification. Which of the following classes has a number before its letter?
Class B
Which of the following classes of fire involves cooking media that use combustible vegetable or animal oils and fats?
Class K
which classification of fire extinguishers involves energized electrical equipment?
Class c
Carbon dioxide is very effective on which two classes of fire?
Classes B & C
After determining the occupancy and combustibility, the system design must deliver enough water to absorb the energy from the fire and is based on what?
Energy output
Which of the following is not to be recorded when testing at the functional level and integrated performance level?
Fire department response time
Which system would be the strongest contributor to smoke movement?
HVAC systems
Which activation of smoke control is not recommended and is rarely done due to potential for malicious activation?
Manual fire alarm box
What type of key is used to open an emergency building entrance system?
Master key
which components of a water spray fixed system are very important and available in automatic or open configurations?
Nozzles
Which type of sprinkler head could be oriented to discharge water up and down with 40 to 60 percent of the water initially flowing downward upon activation?
Old-style sprinkler head
A mechanical system that pressurizes areas of a building with fans to limit smoke movement when there is a fire?
Smoke control
Which smoke control method is best suited for large volume spaces, such as atrium, indoor stadiums, airport terminals, and indoor malls?
Smoke removal
which type of extinguishing system protects commercial kitchen appliances and the associated duct work, exhaust hoods, filters, and plenum chambers?
Wet chemical extinguishing system
Which of the following does not indicate a need to install a specialized water-based fire protection system?
When the appropriate system is outdated and needs replacement
What color is ammonium phosphate?
White
Carbon dioxide
a colorless, odorless, noncombustible, nonconductive gas that exists the air at a very small yet detectable level.
which of the following extinguishing systems offer an alternative to clean agent and specialized water-based fire protection systems
aerosol extinguishing systems
a wet or dry chemical systems initiates an upon activation
alarm signal
No mater the pipe size, a flow rate of ______________ will provide the necessary volume to remove any debris in the line.
all of the above
interior exit stairway doors must be able to open on ________ without any special knowledge, effor, or key
both sides
The final approved report outlining all final component, individual funcitonal, and integrated system performance tests must be located in the:
buildings fire control room
Dry sprinkler heads
can be installed in environments where the temperature cannot be maintained at 40 degrees Fahrenheit or higher
which of the following in a class of fire upon which clean agents are not effective?
class d
Because ____________ can stay in the atmosphere for many years and require substantially more agent to protect an area that halon does, product and system manufacturers do not recommend discharge tests.
clean agents
All of the following are protection objectives of fixed automatic foam systems except what?
directing
_____________ extinguishing agent is make up of small solid particles propelled by a pressurized gas that covers the burning material and decreases the oxygen concentration
dry chemical
Which of the following extinguishing agents is effective on Class D fires and eliminates oxygen forming a crust on the materials and depleting the available oxygen
dry powder
To address concerns that criminals or terrorists might activate fire protection systems to unlock doors and gain unauthorized entry, international building code, referred to as:
electromagnetically locked egress doors
prior to conducting a discharge test for halon and clean agent extinguishing systems, what must be accomplished in order to determine the amount of leakage from the protected area?
enclosure integrity test
How often should fire extinguishers have a visual inspection to ensure readiness and serviceability?
every 30 days
a portion of the means of egress separated from the other parts of the building or structure by fire resistant or fire-rated construction to provide a protected path to the exit discharge
exit
Which of the following components of the means of egress is the portion that leads to the exit?
exit access
Which of the following systems uses the same basic components as an automatic fire sprinkler system and may be a preprimed system?
foam water sprinkler system
The __________ is a mechanical device that is used as an automatic activation device for wet or dry chemical extinguishing systems
fusible link
which fire sprinkler components help fire fighters, sprinkler system contractors, and building maintenance workers determine the available water or air pressure at the gauge location?
gauges
Which of the following is considered a clean agent to replace halons, thereby easing the environmental concerns and potential toxicity of the halon?
halocarbon
Which of the following can stand alone, supplement fire extinguishers, or supplemental fixed dry chemical systems?
hand hose line system
which of the following valves is not part of a fire sprinkler system?
hydrant valve
In which of the following areas might a water mist system be installed
in underground mass transit systems
Which delivery system is the best for delivery halon 1211, since the agent expands as a mixture of liquid droplets and vapor upon discharge?
local application system
which system protects a specific area, piece of equipment, process, or operation depending on the hazard?
local application system
Which of the following activation methods is not used to discharge the carbon dioxide extinguishing system
manually by a fire alarm communication center
How often should the owner or a representative visually inspect the extinguishing system for conditions that could cause failure of, or inhibit, operation
monthly
All of the following documents must be kept on site for fire department use and may be contained in a separate box from the keys, except
occupant rental agreements
Saponification
occurs when the extinguishing agenet reacts with the cooking oil to form a soapy foam blanket that provides separation between oxygen and fuel
Which of the following are considered to be typical impairments of a specialized water-based fire protection system?
painted sprinkler heads
which type of fire sprinkler head is installed with its deflector pointing down toward the floor?
pendant sprinkler head
Which type of fire extinguisher requires manual operation, creating the necessary pressure in the tank to expel the extinguishing agent?
pump extinguisher
dry chemical extinguishing agents are not considered to be dangerous or toxic, although ___________ can occur once it is expelled from the system
respiratory problems
Passive and active systems used alone of in combination to alter smoke movement
smoke management
Which system prevents or reduces smoke intrusion into egress stairways, so occupants can use the stairs to exit the building
stairway pressurization
inspection, testing, and maintenance are the same for specialized water-based fire protection systems as they are for:
standard fire sprinkler systems
which of the following is true of the condensed generator and the dispersed generator for aerosol generation?
the dispersed generator already contains the chemical agent
Which of the following is not a model code requirement for delayed egress locks
the door must automatically relock once opened
Ornamental sprinkler head
this type of sprinkler head is covered with a factory-applied paint or must finish that is usually requested by an architect, an interior designer, or a developer to achieve a certain look in a building.
Which carbon dioxide delivery system protects enclosed hazards, rooms, and areas within a structure by filling the entire enclosure?
total flooding system
which system protects enclosed hazards and areas within a structure, such as in paint spray booths?
total flooding system
limiting a persons ________ minimizes a person exposure to a fire condition before reaching an exit.
travel distance
Which system has fans that pump air into the hoistway, creating a pressure barrier that is slightly higher than the areas outside
Elevator hoistway pressurization
What can be placed outside of a structure to provide responding fire fighters with keys, access cards, and codes to locks and keypads?
Emergency building entrance system
Which type of hazard does a fixed automatic foam system protect?
Flammable and combustible liquids
What needs to be done before a fire sprinkler system is connected to any water source and should be continued until the water flow is clear?
Flushing
Which extinguishing agent is a mixture of agents that, when applied, reacts with the fat in the cooking medium and develops a soapy foam blanket?
Foam
what is an effective agent to meet all of the protection objectives for flammable and combustible liquid hazards?
Foam
Since many manufacturers do not combine the wet chemical agent and expelling gas, which of the following are used to store the expelling gas until it is needed when the system activities?
Gas cartridges
Which gaseous agent is a mixture of carbon and one or more elements from the a halogen series (fluorine, chlorine, bromine, or iodine)?
Halon
which element of a fire sprinkler head is attached to the frame of the sprinkler head and holds the orifice cap in place until it is released at the critical activation temperature?
Heat-sensitive element
what may result from component failure, environmental conditions, damage carelessness, or insufficient inspection, testing or maintenance?
Impairments
Where did most of the earliest requirements to install fire sprinkler systems came directly from who?
Insurance companies
Which fixed foam system component is designed so that when water moves across an open orifice within the device, it creates lower pressure that draws foam concentrate into the water stream?
Venturi proportioner