CH. 4, CH. 5, CH. 12 Flashcards
Understand what devices are used for comms by hearing impaired persons
TTY Teletype TDD Telecommunications device for the deaf.
What does a fire department communications center compare itself with the human body?
The brain
In the U.S. what percentage of people have access to the 911 system?
Over 96%
What are megahertz?
Radios work by broadcasting electronic signals on certain frequencies, which are designated in units of megahertz
How long should it take the time the call comes in until units are dispatched?
90 seconds
What should telecommunicators need to know in order to institute a dispatch?
The exact location must be obtained so that units can respond directly to the scene
How do calls majority of the time come in to dispatch
Landline and cellular phone
Who recommends the use of plain language?
The National Incident Management (NIMS) and NFPA Standards
How many steps are needed in processing a report
5 major steps
What is time marking
communication prompts the IC to report at set intervals which allows the IC to assess the progress of the incident and decide whether the strategy or tactics should be changed.
Understand what a ALI system is
Automatic Location Identification is a series of data elements that informs the recipient of the location of the alarm
Understand what ANI is
Automatic number identification is a series of alphanumeric characters that informs the recipient of the source of the alarm
Understand TDD is
(TDD) telecommunications device for the deaf
What is a MayDay
Indicates that a firefighter is lost, or is missing, or requires immediate assistance.
What happens when a invalid address is entered into the CAD system
The CAD system will prompt the telecommunicator to ask the caller for more information.
What is a base station
A stationary radio transceiver with an integral AC power supply
What is a Automatic vehicle locator system
Allows you to track the vehicle
What are handheld radios
A portable radio is a hand-held two-way radio small enough for a firefighter to carry at all times
Know the 5 step process of the emergency medical service dispatch
Call receipt, Location validation, classification and prioritization, unit selection, dispatch
What is a direct Line
A telephone that connects two predetermined points
Understand what a duplex
A radio system that is able to simultaneously use two frequencies per channel; one frequency transmits and the other receives messages. Such a system uses a repeater site to transmit messages over greater distance than is possible with a simplex system
What takes priority over all other communications
Emergency message AKA -“Mayday”
What should be checked for when there is no voice of a call off a dispatch
TDD and TTY
What is the Federal Communications Commission
The federal authority that oversees radio communications in the United States.
What is a evacuation signal
A distinctive sign intended to be recognized by the occupants as requiring of the building
Know NFPA standard 1061
Standard for Public Safety Telecommunications Personnel Professional Qualifications
What is a call box
A system of telephones connected by phone lines, radio equipment, or cellular technology to a communications center of fire department
Understand what Class C fires are
Fires including Electrical equipment
Understand what vapor density is
The weight of an airborne concentration (vapor or gas) as compared to an equal volume of dry air
Understand what endothermic reaction is
Reactions that absorb heat or requires heat to be added
Understand what a Class B fire is
Flammable or combustible liquids and gasses
Understand what is flashover and its components
Transition from a fire that is growing by igniting one type of fuel to another, to a fire where all of the exposed surfaces have ignited.
What is mechanical energy
Converted to heat when two materials rub against each other and create friction.
Understand convection
The heat of the fire warms the gasses and particles in the smoke.
Understand conduction
Process of transferring heat to and through one solid to another.
Understand oxidation
Process of chemically combining oxygen with another substance with another substance to create a new compound.
Understand matter
Solid, liquid, or gas
Understand the color of smoke and what causes that color
White or clear smoke is further from the seat of a fire, gray is close to the seat, and black is the seat
What are the fire extinguishment choices
A. Cooling the burning material
B. Excluding oxygen from the fire
C.Removing fuel from the fire
D.Interrupting the chemical reaction
What is heat flux
The measure of rate that heat is transferred to a surface, usually Displayed as Kw/m^2 or Btu/ft^2
What is thermal layering
The phenomenon of gases forming into layers according to temperature
Understand combustion
Rapid chemical process in which the combination of a substance with oxygen produces heat and light.
Understand backdraft
Caused by the introduction of oxygen, a change of ventilation profile, into an enclosure where the superheated gasses and contents are already hot enough for ignition but do not have sufficient oxygen to combust.
Understand flow path
The volume of space in which the cooler air is being drawn into the fire and the volume of space where the hotter gases and smoke are escaping from the fire
Turbulence smoke indicates what
Possibility of a backdraft
Understand ignition temperature
The minimum temperature at which a fuel will ignite and continue to burn
What is a fire point
Lowest temperature at which liquid produces enough vapor to sustain a continuous fire
Understand the fire stages of fire development
Incipient stage is when there is an adequate supply of fuel, oxygen, and heat to ignite.
Growth stage is when the fire has spreaded and begins to grow.
Fully developed stage is when the fire is burning all the fuel in the area and has reached its peak.
Decay stage is when the fire has run short on one of the three components of the fire triangle and is beginning to die.
Understand rollover
Spontaneous ignition of hot gasses in the upper levels in a room or compartment
Understand what spontaneous heating is
typically occurs when the quantity of air passing through the coal is sufficient to support oxidation but is inadequate to carry off the heat produced by the oxidation reaction.
Understand what is thermal radiation
Thermal radiation is electromagnetic radiation generated by the thermal motion of particles in matter.
Understand the components of a BLEVE
Boiling-liquid/expanding vapor explosion. When a liquid fuel is stored under pressure.
Know the flash point of certain accelerants
Gasoline(-45 F/-43 c)
Acetone(-4 F/-20 c)
#2 grade diesel(125 F/52 c)
What material has the highest thermal conductivity
Copper(385 W/m-k)
Understand what happens when you open doors of rooms filled with smoked
You introduce oxygen back to the mixture and it can reignite
When should we use a blanket drag
When the victim is not wearing clothing
When should we use a aerial platform
During rescue operations, is much safer and dependable than a ground ladder
During a fire where do kids like hide
In a closet, bath tub, or under furniture
Understand position during OVEIS
Requires a team of two rescuers, one officer and one searcher.
Officer stays outside to assess, communicate, and monitor.
How should an unconscious person be carried down a ladder
Cradled in arms as the firefighter descends the ladder
Classes of Fire
Class A- solids
Class B- Liquids
Class C- Electrial
Class D- metals
Class K- Cooking Oils
