Quiz 7 Flashcards
A simplex channel used for on-site communications
Talk-around channel
Any occupancy type or facility that presents a high potential for loss of life or serious impact to the community resulting from fire, explosion, or chemical release.
Target Hazard
A separate rope that ground personnel can use to guide an object that is being hoisted or lowered
Tag line
a degree of sensible heat as measured by a thermometer or similar instrument.
Temperature
A type of safety glass that is heat-treated so that, under stress or fire, it will break into small pieces that are not as dangerous.
tempered glass
The stratification (heat layers) that occurs in a room as a result of a fire.
Thermal Layering
the point at which a hazardous material or weapon of mass destruction begins to affect a person
Threshold Limit Value
the land surface configuration (nfpa 1051)
Topography
the degree to which a substance is harmful to humans (nfpa 236)
Toxicity
Gases or volatile liquids that are extremely toxic to humans
Toxic Inhalation Hazard (TIH)
Solid or liquid fuel used to intentionally spread or accelerate the spread of a fire from one area to another. (NFPA 921)
Trailers
A roof cut that is made from one load-bearing wall to another load-bearing wall and that is intended to prevent horizontal fire spread in a building.
trench cut
A team effort that allows all agencies with jurisdictional responsibility for an incident or planned event, either geographic or functional, to manage the incident or planned event by establishing a common set of incident objectives and strategies. (NFPA 1026)
Unified Command
The concept by which each person within an organization reports to one and only one designated person.
unity of command
the maximum amount of gaseous fuel that can be present in the air if the air/fuel mixture is to be explosive or flammable.
Upper Flammable (Explosive) Limit (UEL)
Rope used for securing objects, for hoisting equipment, or for securing a scene to prevent bystanders from being injured. Utility rope must never be used in life-safety operations.
utility rope
The weight of an airborne concentration (vapor or gas) as compared to an equal volume of dry air.
Vapor Density
the pressure, measured in pounds per square inch, exerted by a liquid, as determined by ASTMD 323, standard test method for vapor pressure of petroleum products (Reid method) (nfpa 1)
vapor pressure
the vertical venting of structures involving the opening of bulkhead doors, skylights, scuttles, and roof cutting operations to release the smoke and heat from inside the fire building (nfpa 1410)
vertical ventilation
The ability of a substance to produce combustible vapors.
Volatility
the control zone outside the hot zone where personnel and equipment decontamination and hot zone support takes place
warm zone
The surge of pressure that occurs when a high-velocity flow of water is abruptly shut off. The pressure exerted by the flowing water against the closed system can be seven or more times that of the static pressure. (NFPA 1962)
Water Hammer
A method of transporting water from a source to a fire scene using a number of mobile water supply apparatus.
Water Shuttle Operation
A device that has a 2½-inch inlet and a 2½-inch outlet in addition to two 1½-inch outlets. It is used to supply many hoses from one source.
Water Thief
A hydrant used in areas that are not susceptible to freezing. The barrel of the hydrant is normally filled with water.
Wet-Barrel Hydrant
The part of the rope used for forming a knot.
Working end
A device used to split a single hose into two or more separate lines.
wye
An attachment to the sprinkler system that detects a predetermined water flow and is connected to a fire alarm system to initiate an alarm condition
Water flow Device
