-
All fires involving seat producing chemical reaction between *test*
Fuel and oxidizer
-
The chemical process of oxidation that occurs at a right fast enough to produce heat
Combustion
-
A rapid oxidation process which is a gas phase chemical reaction resulting in evolution of light in feet
Fire
-
Form of energy associated with the Motion of atoms or molecules in solids or liquids that is transferred from one body to another
Heat
-
Measure of the average kinetic energy of the particles in a sample of matter
Temperature
-
Material that will maintain combustion under specified environmental conditions
Fuel
-
Any material that readily yields oxygen or other oxidizing gas, or that readily reacts to promote or initiate combustion
Oxidizer
-
Capacity to perform work
Energy
-
When a substance chemically is the same but changes in size, shape, appearance
Physical change
-
Amount of energy that an object can release at some point in the future
Potential energy
-
Potential energy available for releasing combustion process
Heat of combustion
-
Kinetic energy associated with the random motion of molecules of a material or object
Thermal energy
-
Units of work or energy in the international system of units
Joule
-
The quantity of heat required to change the temperature of 1 g of water by 1°C is
4.2 Joules
-
1055 joule= how many btu
1 btu
-
Reaction that emit energy sometimes in the form of heat and light
Exothermic reaction
-
Reaction that absorbs energy as they occur
Endothermic reaction
-
The fire triangle shows what three elements necessary for combustion *test*
Fuel, oxygen, heat
-
The chemical decomposition of a solid material by heating
Pyrolysis
-
Moment when a mixture of fuel and oxygen encounter an external heat source
Piloted ignition (Most common form of ignition)
-
Initiation of combustion by heat without a spark flame
Autoignition
-
Minimum temperature at which a fuel in the air must be heated in order to start self sustained combustion
Auto ignition temperature
-
To draw in and transport solid particles or gases by the flow of a fluid
Entrain
-
Fuels in which energy of combustion derives from carbon, such as Wood, Cotton, Coal, petroleum
Carbon-based fuels
-
Petroleum based organic compound that contains only hydrogen and carbon
Hydrocarbon fuel
-
Smoke is a product of what
Incomplete combustion
-
Car monoxide can combine with hemoglobin how much faster than oxygen
200 times
-
Fatal condition caused by severe oxygen deficiency and excess carbon monoxide
Affixation
-
Smoke as a product of
Incomplete combustion
-
Colorless toxic andflammable liquid until reaches 79°F, produced by the combustion of nitrogen bearing substance
Hydrogen cyanide
-
Hydrogen cyanide is how much more toxic than carbon monoxide
35 times
-
They measure of Rate of heat transfer to or from a surface
Heat flux
-
Total amount of heat released per unit time
Heat release rate
-
The result of exothermic reaction occurring spontaneously in some materials under certain conditions
Self heating
-
Initiation of combustion of material by internal chemical or biological reaction that has produced enough heat to ignite material
Spontaneous ignition
-
At standard temperature, atmospheric pressure and gases do what
Remain calm and move very little
-
Gas is always moved from the area of______ pressure to the area of_______ pressure
Higher, lower
-
Measurement of average kinetic energy in particles of a sample of matter (measurement of heat)
Temperature
-
Common sources of heat that result in the ignition of a fuel
Chemical, electrical, mechanical energy
-
Most common source of heat in combustion reactions
Chemical energy
-
For self-heating to progress to spontaneous ignition what factors are required
Insulation surrounding fuel must not allow heat to dissipate as fast as it is generated, heat production must raise temperature of material to autoignition temperature, adequate air supply
-
What can generate temperatures high enough to ignite any combustible material near the heated area
Electrical energy
-
Electric current flowing through conductor produces heat
Resistance heating
-
Current flowing through conductor exceeds its designed limit
Overcurrent or overload
-
High temperature luminous electric discharge across a gap or through a medium such as chart insulation
Arcing
-
When electric arc occurs luminous or glowing
Sparking
-
Heat transfers from one body to another how
Conduction, convection, radiation
-
Heat transfer from conduction is dependent on what three factors
Area being heated, temperature difference between heat source and material being heated, thermoconductivity of heated material
-
What slows the conduction of heat from one material to another
Insulating materials
-
The point at which two regions that are in thermal contact no longer transfer heat between them because they have reached the same temperature
Thermal equilibrium
-
Heat transfer from convection is dependent on what three factors
Area being heated, temperature difference between hot fluid or gas and material being heated, turbulence in velocity of moving gases
-
The transmission of energy as electromagnetic waves such as light waves, radio waves, x-rays without intervening medium
Radiation
-
What can become the dominant mode of heat transfer as fire grows in size
Radiant heat
-
Common cause of exposure fires
Radiation
-
Fuel that is being oxidized or burned during combustion
Reducing agent
-
Oxidized or burned material or substance in the combustion process
Fuel
-
Amount of energy delivered over and give them period of time
Power
-
The SI unit of power or rate of work equal to 1 J per second
Watt
-
Most dangerous of all types of fuels because they are already in physical state required for ignition
Methane, hydrogen, acetylene
-
For flaming Combustion to occur fuels must be in what state
Gaseous
-
The gaseous state of a fuel that would normally exist as a liquid or solid at standard temperature and pressure
Vapor
-
The density of gas in relation to air
Vapor density
-
Gas vapors with a density of less than 1 will do what? Gas vapors with a density greater than 1 will do what?
Density less than 1 will rise, density greater than 1 will sink
-
Mass of a substance compared to the weight of an equal volume of water at a given temperature *test*
Specific gravity
-
To burn liquids must do what
Vaporize
-
What indicates how easily a substance will evaporate into the air
Vapor pressure
-
The minimum temperature which a liquid gives off sufficient vapers to ignite
Flashpoint
-
The temperature at which a piloted ignition of sufficient vapors will begin a sustained combustion reaction
Fire point
-
The extent to which a substance will mix with water
Solubility
-
Materials that are_____ in water will mix in any proportion
Miscible
-
Flammable liquids that have an attraction to water
Polar solvents 01
-
Ratio of a surface area of fuel to the mass of a fuel
Surface to mass ratio
-
Primary oxidizing agent in most of fires
Oxygen
-
What is considered oxygen deficient and oxygen enriched in atmosphere
19. 5% oxygen is deficient, 23. 5% oxygen is enriched
-
Lower limit at which a flammable gas or vapor will ignite and support combustion
Lower explosive limit
-
Upper limit at which a flammable gas or vapor will ignite
Upper explosive limit
-
The range between upper flammable limit and lower flammable leopit in which I substance can ignite
Flammable range
-
Molecules of gas and oxygen break apart to form______ electrically charged high reactive parts of molecules
Free radicals
-
Extinguishment of a fire by interruption of chemical chain reaction
Chemical flame inhibition
-
When three elements of fire triangle come together, the fire is small and confined
Incipient stage
-
More of initial fuel becomes involved in production of heat and smoke increases
Growth stage
-
When all combustible materials in compartment are burning in their peak heat release rate
Fully develop stage
-
As fire consumes the available fuel or oxygen and heat release begins to decline
Decay stage
-
Hot gases in the plume rise until they encounter the ceiling and then begin to spread horizontally
Ceiling jet
-
When Flames reach ____ high radiated heat begins to transfer more heat then convection
2.5 ft
-
The drawing in insurance porting of solid particles or gases by flow of a fluid
Entrainment
-
Area surrounding a heat source in which there is sufficient air available to feed a fire
Combustion zone
-
The tendency of gases to form into layers according to temperature, gas density, pressure
Thermal layering
-
The space between the air intake and exhaust outlet
Flow path
-
Combustion of these hot gases indicate that portions of the hot gas layer are within their flammable range and there’s sufficient heat to cause ignition
Isolated or intermittent flames (immediately before flashover)
-
The interference between the hot gas layers and a cooler layer of air
Neutral plane
-
Rapid transition from growth stage to fully developed stage
Flashover
-
Significant indicator of flashover, condition or unburned fire gases have accumulated at top of compartment ignite and flames propagate across ceiling
Roll over
-
Four common elements of flashover
- Transition in fire development- Transition from growth stage to fully develop stage
- Rapidity
- Compartment
- Pyrolysis of all exposed fuel sources
-
The autoignition temperature of CO, the most abundant fuel gas created in most fires
1100°F
-
My indicate fire is in early stages of development
Hi neutral plane
-
Could indicate that the compartment has not yet been ventilated or flashover is approaching
Mid-level neutral plane
-
Indicate fire is reaching flashover conditions
Low level neutral plane
-
Two main types of fully developed fires
Ventilation limited and fuel limited
-
Fire is said to be in decay stage when what
It runs out of fuel or oxygen
-
A flow path is composed of what two regions
Ambient airflow in and hot exhaust flow out
-
A flow pass effectiveness to transport ambient air to the seat of the fire is based on
Size of ventilation opening, length of path traveled, number of obstructions, elevation differences
-
When a mixture of unburned fuel gases in oxygen come and contact within a ignition source
Smoke explosion
-
Two primary types of dangerous building conditions
Conditions that contribute to spread and intensity of fire, conditions that make building susceptible to collapse
-
The total quantity of combustible contents of a building, space, fire area
Fuel load
-
A way that the arrangement of compartment creates or does not create a serious of barriers for fire
Compartmentation
-
Thermal properties of a building include
Insulation, heat reflectively, retention
-
Unprotected engineered steel and wooded trusses can fail how soon after exposure to Fire
5 to 10 minutes
-
Bowstring truss roof was commonly used in facilities with large open floor spaces with limited interior supports such as
Automobile dealerships, bowling alleys, grocery stores, industrial complexes
-
Assessment of a facility or location made before an emergency occurs
Preincident survey
-
Act of preparing to manage an incident at a particular location or a particular incident before it occurs
Preincident planning
-
What is the first step to completing a successful Preincident survey
Building a relationship between Company Officer and business owner
-
Architectural drawing showing the overall project layout of building area, fences, hydrants, landscape from directly above
Plot plan
-
Rough drawing of a building repair during facility survey
Field sketch
-
Life safety information is collected in two basic topic areas
Protection and evacuation of occupants and protection of firefighters
-
Everything within a structure that is not part of the structure can be considered what
Building contents
-
What can be used during emergency operations to remove contaminated atmospheres from a structure If natural ventilation is not helping
HVAC
-
Non-combustible barriers or dividers hung from the ceiling in large open areas that are designed to minimize the mushrooming affect of heat and smoke
Draft curtains
-
What release heat and smoke to the outside through vents that work automatically and are placed at the highest point of the roof or wall
Automatic roof and wall vents
-
Release heat and smoke from atriums to the outside
Atrium Vents
-
Release heat and smoke to the outside from square or rectangular structures that penetrate a buildings roof
Monitors
-
Thermoplastic panels or ordinary window glass act as automatic vents when a fire’s heat melts the plastic or breaks glass
Skylights
-
Instrument that is inserted to flowing fluid to measure velocity pressure of string
Pitot gauge
-
The estimated uninterrupted quantity of water expressed in gallons per minute that is needed to extinguish a well-established fire
Required fire flow
-
Horizontal member between trusses that support the roof
Perlin
-
All structural members are composed of only noncombustable materials that possess a high fire resistant rating
Type 1 construction
-
Composed of materials that will not contribute to fire development or spread, non-combustible or protected non-combustible materials
Type 2 construction
-
Older churches, schools, mercantile structures, exterior walls be constructed of non-combustible materials typically Masonary, interior walls can be constructed of any material adopted by codes
Type 3 construction
-
Construction that uses large dimension timber greater than 4 inches. Any other material used in construction not composed of wood must have how much fire resistant rating?
Type 4 construction, one hour rating
-
Woodframe construction, exterior bearing walls might be composed of water other combustible materials with brick or stone constructed over them
Type 5 construction
-
Factory built homes do not conform to model building code who regulates manufacturing
Housing and urban development
-
Five types of factory built homes
Manufactured, Modular, Panalized, pre-cut, hybrid modular
-
Most common type of manufactured home, completely pre-manufactured prior to delivery and least expensive
Manufactured
-
Must comply with same local building codes as site built homes, sections are Constructed and transported to site and attached to each other in a permanent foundation
Modular
-
Assembled on site from preconstructed panels made a foam insulation sandwich between plywood
Panelized
-
Precut houses, post and beam construction, log homes, A-frames, geodesic domes, Made of individual parts that are custom cut it must be assembled on site
Pre-cut
-
Includes elements of both moder design and panelized design, most recent development in factory built homes
Hybrid modular
-
National building code of Canada three types of building construction
Combustible, noncombustible, heavy timber
-
Contain interior walls that create small boxes or spaces within the confines of the exterior walls
Compartmentalized structure
-
Space between top floor of a structure and the roof
Attic or cockloft
-
A space of 2 to 3 feet in height that is found over commercial buildings
Cockloft
-
Open space or air duct above a drop ceiling that is part of the air distribution system
Plenum
-
Area beneath a wall in which wall is likely to land if it loses structural integrity, 1 1/2 times the height of the building
Collapse zone
-
What type of construction is least likely to collapse
Type 4 Heavy timber or mill construction
-
A multi story platform structure would generally burn through and collapse inward while a balloon structure will do what
Have full walls fall outward in a single piece
-
Collapse zones should be established when
Prolonged exposure to fire or heat, defensive strategy, interior operations cannot be justified
-
Contents make contribute to collapse in what three ways
Adding to fuel load generating higher temperatures, adding weight, retaining water
-
Roof types
Flat, Pitched, arched
-
Type of roof commonly found on commercial, industrial, apartment buildings with a slight slope to facilitate water drainage
Flat roof
-
Have a peak along one edge or in a center and a deck that slopes downward from the peak
Pitched roof
-
Compose a relatively short timbers of uniform length, are beveled and bored at the ends where they are bolted together at an angle to form an interlocking Netwerk
Trussless arched roofs (Lamela roofs)
-
Roof of the building that is partially or completely covered with vegetation
Green roof
-
Written or unwritten plan for the disposition of an incident, contains strategic goals, tactical objectives, support requirements for operational.
Incident action plan
-
Learning tools used to evaluate a project or incident, to identify and encourage organizational and operational strength and identify and correct weaknesses
After action review
-
To identify a problem you must first
Gather facts Based on dispatch report, check Preincident survey, access personal observations, check relayed info, assess your experiences
-
Initial fire department response to report of an emergency
First of all massage
-
US mandated incident management system that defines the rolls, responsibilities, standard operating procedures used to manage emergency operations
NIMS – ICS
-
Incident management personnel who report directly to IC, include PIO, safety officer and liaison officer
Command staff
-
Incident management personnel who represent the major functional sections
General staff
-
Organizational level having responsibility for a major functional area of incident management
Section (Responsible for operations, planning, logistics, finance, info)
-
Organizational level having functional – geographical responsibility for major segment of incident operations, located between section and division
Branch
-
Organization of level have responsibility for operations within a defined geographic area, between branch and single resources
Division
-
Organizational level equal to division have a responsibility for specified functional assignment
Group
-
Organizational level with the sections that fulfill specific support functions such as resources, documentation, demobilization
Unit
-
Specified number of personal assembled for an assignment
Crew
-
Individual piece of apparatus and personnel
Single resource
-
Any combination of resources assembled for a specific mission or operational assignment
Task force
-
Set number of resources of the same type that have established a minimum number of personnel
Strike team
-
Two basic communication rules at Emergency scenes
Identify yourself and every transmission, receiver must acknowledge every message
-
Necessary when an incident involves or threatens to involve more than one jurisdiction or agency
Unified command structure
-
Personnel operating in I DL H environment must be assigned in crews of how many personnel
Two or more
-
Rate of motion in a given direction measured in units of length per unit time
Velocity
-
When is considering foundation for your decision making process think about what four components
Facts, perceptions, projections, probabilities
-
Things that you know to be true
Facts
-
Based on experiences influence by your knowledge, biases, beliefs, past experiences
Perceptions
-
Things that are likely to occur based on given situation
Probabilities
-
Regulations only require how many train personnel for Ric
2 but it is highly recommended to have more
-
Most common heated materials found in smoke giving it the black color
Tar, soot, carbon
-
Indicates that pyrolysis is occurring in areas adjacent to main body of fire, indicates moisture and gases are being released from product
White smoke
-
Common in mid stage heating as moisture mixes with gases in carbon has pyrolysis increases *test*
Brown smoke
-
When different smoke areas combine can indicate smoke production changes from midstage heating to high heat
Gray smoke
-
High quantities of carbon particles, indicator of amount of ventilation available in the seat of fire, the thicker the smoke the less cleanburning and less oxygen available
Black smoke
-
A high neutral plane might indicate
Fire is in the early stages of development
-
When neutral plane is roughly centered between the ceiling and floor
The fire is beginning to be ventilation controlled and flashover conditions are developing
-
Neutral plane is close to floor may indicate
Room is reaching flashover conditions, fire is it a grade below room
-
The darker and more turbulent the smoke is. The closer you are to rapid fire event
Smoke density
-
Three common types of movement in smoke are
Floating or hanging, volume pushed, heat pushed
-
Movement of a liquid or gas at a high rate of speed and no definite pattern to the movement of particles
Turbulent flow
-
Movement of liquid or gas at a low rate of speed in and in a predictable directions
Laminar flow
-
Form of energy transferred from one body to another as a result of temperature difference
Heat
-
Indicates a fire in the room that’s hot smoke condenses on a cooler window
Blackened or crazed glass
-
Indicates both temperature extreme and location of neutral plane
Blistered paint
-
Indicates flashover conditions are present
Sudden heat buildup
-
CARA
Conditions actions resources air
-
Clearly identified strategic goal and tactical objective necessary to achieve goal
Plan of operation
-
Type of size up that could be employed to evacuate the potential of a occupant being alive within a structure fire
Occupant survival profile
-
System that optimizes the utilization of all available resources, personnel, procedure, equipment in order to promote safety and improve operational efficiency
Crew resource management
-
CRM training achieves its goals of increasing scene safety and responder effectiveness by emphasizing
Communications, situational awareness, decision making, teamwork, barriers
-
The first and company officer should consider pulling past the address for what
Get a three side of view of structure
-
Warning device the alerts the user that respiratory protection equipment is about to reach it’s Limit and that it is time to exit
End of service time indicator
-
Factors that affect strategy and tactics in institutional occupancies
Ambulatory or not, limited access, vulnerable population
-
Factors that will affect strategy and tactics in industrial and storage occupancies
Amount and type of fuel, size and configuration of structure, racking system, live processes
-
Used for the gathering of 50 or more people
Assembly occupancy
-
An existing residential or commercial property that is up for sale, utilities may be still on and some continents may remain in structure
Unoccupied
-
Residential or commercial property that is empty and may have all entrances secured or boarded up
Vacant
-
Property that has been vacant for sometime and may be structurally unsound
Abandoned
-
Incident priorities that apply to all types of incidents and are listed in order of priority *test*
Life safety, incident stabilization, property conservation
-
Traditionally 2 strategies that the fire service uses
Offensive or defensive
-
Apply water from exterior of structure as crews advance into the interior
Transitional attack
-
Defensive strategy operations are justified in what conditions
Volume of fire exceeds resources available to extinguish, structural deterioration, risk outweighs benefit, occupancy is known to be vacant
-
Based on information gathered in incident size up, may result in a written plan
IAP (If incident a small and can be handled by first alarm assignments plan does not have to be written down)
-
First arriving officer has several command options. What are they?
Investigation (nothing showing), fast attack or mobile command, stationary command
-
Situations when mobile command maybe used
Victim rescue, offensive attack, safety at firefighters is major concern, further investigation, crewmembers need supervision due to inexperience
-
In this command option company officer remains at mobile radio in apparatus assigning tasks
Stationary command
-
When transferring command IC should brief releaving officer of what
Incident status, safety, goals and objectives, progress, resource locations in hazard zone, need for additional resources
-
What is essential for safe and efficient transition to defensive strategy
Personal accountability
-
Involves techniques that allow a rescuer to identify the location of a victim and how to remove them
Search
-
Removal of victims from my untenable or unhealthy atmosphere
Rescue
-
Some of the safety guidelines that the initial IC should use are
Forming a survivability profile, assigning tactical objective, maintain communications and accountability, monitor conditions
-
Safety guidelines that search teams should use are
Monitoring, evaluating, communicating fire conditions and victim viability; searching systematically, reporting status and PAR to IC
-
Rapid but thorough search to determine location of victims, performed either before or during fire suppression *test*
Primary search
-
Slow thorough search to ensure that no occupants were overlooked during primary search *test*
Secondary search
-
Systematic pattern such as left or right handed search, effective when entering a structure from normal ingress, require least amount of training and supervision
General – traditional search
-
Systemic approach in which team can quickly and effectively search specific room, team leader position himself in a fixed location to keep groups orientation
Oriented search
-
Used to conduct a search of a large complex filled with smoke, utilize equipment and rope systems
Wide area search
-
Used when suspected or probable that a victim is present in a specific room or compartment within a structure and there is direct access to enter the room
Vent enter isolate search
-
Facts you need to consider when implementing confinement tactics
Type of construction, type of fire protection system, building occupancy
-
Factors that determine whether fire extension what affect nearby external exposures
Type of construction, fire protection system, building separation, active and passive barriers, non-structural exposures, weather conditions
-
Attack method that involves a discharge of water or a foam stream directly on burning fuel
Direct attack
-
Using a straight or solid stream with water most efficiently on ventilation controlled fires
Indirect attack (considered transitional is performed beginning on the exterior)
-
Fire that is located in a remote part of structure or hidden from view
Shielded fire (gas cooling is a way of reducing heat for this fire)
-
Offensive tactic that employs a hose line from the exterior of structure where smoke or flames are visible to gain control of fire prior to deployment of interior hose lines
Transitional attack
-
Positive pressure fans are most effective on what fires
Fires confined to a compartment
-
The 2 main considerations for positive pressure attack are
Fire location and exhaust to intake size ratio
-
Positive pressure attack is only effective when
Location of fire is known and appropriate exhaust to intake a ratio can be be achieved (greater than 1)
-
Rehabilitation function during an incident intended to monitor responders vital signs and stress level
Medical surveillance
-
Planned systematic and coordinated removal of heated air, smoke, gases, or other airborne contaminants from a structure, replacing them with cooler fresher air
Tactical ventilation
-
When may ventilation occur
Before during or after fire suppression
-
Open plan commercial structures known as_____ have high fuel loads and contents and no physical barriers to prevent fire spread
Big box
-
What must be in place before tactical ventilation begins
Fire attack crews, charged hose lines, search and rescue teams, exposure protection
-
The most important weather related influence on ventilation
Wind
-
Two types of tactical ventilation used for structure fires
Horizontal and vertical
-
The oldest type of mechanical ventilation
Negative pressure ventilation
-
Considerations for negative pressure ventilation
Not used to support fire attack, requires smaller windows or openings that can be sealed around fan, Not used in flammable environment
-
Lower horizontal surface such as under surface of eaves or cornices
Soffit
-
As a last resort what can be done in basement fires to force heat and smoke out
Cut an opening in the floor near a ground level door or window
-
Personnel required for search and rescue and firefighting operations in high-rise buildings
4 to 6 times as great as required for typical low rise building fires
-
Vertical shaft with an a tall building to act as a chimney or smoke stack channeling heat and smoke upward due to convection, strong draft moving from ground level to roof level
Stack effect, also known as the chimney affect
-
Tendency of heat and smoke to rise until they encounter a horizontal obstruction, then will spread laterally until they encounter a vertical obstruction and Bank downward
Horizontal smoke spread
-
The most important aspect of tactical ventilation in high-rise buildings
Confine fire to its compartment or floor of origin
-
Salvage tactical operations begin when
Resources are available to implement the tasks required to complete salvage
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