Company officer Chapter 10 Flashcards
NFPA 12
Standard on carbon dioxide extinguishing systems
What systems protect commercial cooking operations?
Wet Chem systems
NFPA 17
Standard on dry Chem extinguishing systems
What is the term used to describe the resistance of a building to collapse or to total involvement and fire
Fire resistance
The rate of water needed to control the fire is called what
Theoretical fire flow
The term protected, when applied to construction materials, means what?
Protected from the effects of fire by encasement
Common method of fire spread type one construction
Window to window or through vertical openings
Two subtypes of type 2 construction
A protected less than type one
B no protection
A 50 foot long steel beam heated uniformly over its length from 72° to 972° will expand by how much
3.9 inches
What measurement provides the ability to measure energy as an extensible property that explains what was happening
Heat release rate
NFPA 30
Standard on flammable and combustible liquids
NFPA 30B
Code for the manufacture and storage of aerosol products
NFPA 13
Sprinkler systems
NFPA 13 D
Installation of sprinkler systems in one and two family dwellings and manufactured homes
NFPA 13 R
Installation of sprinkler systems and residential occupancies up to and including four stories in height
HMMP
Hazardous material management plan
Ordinary temperature rated heads operate between what two temperatures
135 170
What systems protect commercial cooking operations
Wet chemical
NFPA 12
Standard on carbon dioxide extinguishing systems
NFPA 17
Dry Chem extinguishing systems
NFPA 74 placard system
Blue health
Red flammability
Yellow instability
Fire officers should make it a habit to observe what investigate when they appear to be closed
Exterior supply valves
Firewalls are what
Structurally independent and separate buildings
Steel looses half its strength at what temperature
900
Type two construction
Noncombustible
What is the term used to describe the resistance of a building to collapse or to total involvement and fire
Fire resistance
This is the difference between the operating temperature of a fire detection device such as the sprinkler head and the actual air temperature when the device activated
Thermal lag
Combustible voids, as well as closets, not exceeding what square footage and bathrooms not exceeding what square footage are not required to be sprinkled
24 & 55
The total building area exempted from sprinkler protection has been estimated as high as what percent
67
Wet pipe systems are installed for indoor temperatures that can be maintained at what temperature
40°F
What systems are sometimes used were freezing is expected
Dry systems
The ratio of air pressure to water pressure at which the valve will open in a sprinkler system is called what
Differential
What are dry systems in which the water supply valve is opened on a signal from detection devices such as a heat or smoke detector
Pre-action
What systems are installed an extra hazard occupancies where there is the possibility of a flash fire fire growth so rapid the response of a standard sprinkler system is too slow
Deluge
What is required for all water-based fire extinguishing systems and standpipe systems with the exception of the limited area sprinkler systems of less then ______heads and NFPA 13 the sprinkler systems
20
These are chemical compounds that contain carbon and one or more elements from the halogen series
Halogenated extinguishing agents
What is used in total flooding systems that this charge quantity sufficient to create up to 10% concentration in the areas protected
Halon 1301
Halogenated agent suppress fires by interrupting the chemical chain reaction and will not extinguish what class materials
Class a
Wonder what government act was halon 1211 and 1301 banned
Clean air act January 1, 1994
Which is a highly effective extinguishing agent on class B and C fires
CO2
CO2 in what concentrations will render persons unconscious almost immediately
Greater than 9%
NFPA 72
Fire alarm code
Air handling units over what CFM must automatically shut down upon activation of a duct smoke detector installed upstream from the air handler
2000
When fire rises and Stratifies with in an enclosed space it is called what
Thermal stratification
Firefighter survival time in the event of a flashover is how long
10 seconds
NFPA 1403
Standard live fire training evolutions
Which is the most forceful of all fire related events
Backdraft
What does fire safety concept tree show
The relationship between fire prevention activities and fire damage control strategies
NFPA 550
The fire safety concept tree
NFPA 25
Inspection testing and maintenance of water-based fire protection systems
NFPA 17A
Wet chemical extinguishing systems
NFPA 15
Waterspray fixed systems of fire protection
NFPA 14
Installation of standpipes and hose systems
NFPA 12A
Standard on Halon 1301 fire extinguishing systems
Generally where are standpipe connections required
On each floor at every exit stairway and on each side of a horizontal exit
Occupancy classification’s that are more hazardous have what
More stringent construction requirements
What three things will affect fire intensity and behavior (building construction)
Types of building materials, construction methods, built in fire protection
The goals of building codes can be met with a variety of ways using what? (3)
Fire resistance rated construction, fire extinguishment systems, noncombustible building materials
What are the three goals of building codes
Maintain integrity, limit fire size, provide adequate time for occupants to escape or shelter in place
Community consequences related to what
Impact of events both during and after
Property risk factors are affected by what
Building construction, exposures, occupancy, available resources
The first step in identifying the strengths and weaknesses of the FD and dealing with emergencies is what
Assessing their communities risk
Life risk factors are affected by what
Number people at risk, their danger, ability to provide for their own safety
Term used when measuring the quantity of heat or energy released per unit of weight
Heat of combustion
What describes the spread of the fire through the fuel load in the structure itself
Fire extension
This uses fans or blowers to force the movement of air through the structure
Mechanical ventilation
What are the desirable properties of H2O as extinguishing agent
Cheap, readily available, Capacity to absorb heat
The quantity of heat absorbed by a substance changes from a liquid to a vapor
Latent heat of vaporization
Polystyrene BTU’s
18,000 per pound
What is the average load of fuel in a typical structure
4 pounds per square foot
What is the NFA fire flow formula
Area in square feet divided by three
How many construction type are recognized by the IBC
Five
Type one construction
Fire resistive -structural elements are noncombustible and are protected to the highest level
What is the difference between the two subtypes of type one construction
Level of protection for the structural elements
The typical strip shopping center or big box store is what type of construction
2B
Two subtypes of type III construction
Protected and unprotected
Type three construction
Ordinary – masonry with interior elements of any approved material, combustible or noncombustible
Type four beam measurements
6 inches wide by 10 inches deep
Type four columns must be how big
8 x 8
Type four construction
Heavy timber – exterior wall masonry interior structural elements unprotected would’ve large dimensions
Type five construction
Woodframe – entire structure wood subdivided to protected and unprotected
What two things are constructed within a building in separate fire areas or block the passage of heat and smoke
Fire barriers and fire partitions
Modern building codes are for the most part what type of code
Performance codes
Designing to the perspective provisions of the ____is the most cost-effective approach
IBC
The total amount of combustible material with in a fire area, expressed in terms of pounds per square foot.
Fuel load or fire load
Four basic types of sprinkler systems
Wet, dry, pre-action, deluge
Buildings under construction or generally required to have at least___ standpipe, capable of flowing ____GPM within _____floor of the top of the building
One, 500, one
This is a term used to define the way fire performs or reacts in given situations
Fire behavior
What three things I needed to start fire
Fuel, heat, oxidizer
Fire tetrahedron
Fuel, heat, oxygen, continuous chain reaction
First stage of fire
Incipient stage
Second stage of fire
Free burning stage
Third stage of fire
Smoldering stage
This buyer behavior travels well in advance of the front of the actual fire
Rollover
This event is generally associated with rapid transition and fire behavior from localize burning of fuel to involvement of all combustibles in the enclosure. Transition can occur when upper room temperatures are between 750° and 1112°
Flashover
A term used to describe the heat absorbing capacity of a substance
Specific heat
How much does water weigh per gallon
8.33 lb
Gasoline BTU’s
19,000/lb
