Overhaul
What are the two types of damage caused by structure fires?
Primary- Fire and smoke
Secondary- Fire suppression activities such as forcible entry, ventilation, and extinguishment
Long-term health effects resulting from exposure to a hazardous substance.
Chronic Health Effects
Inclined beam that supports a roof, runs parallel to the slope of the roof, and to which the roof decking is attached.
Rafter
Initiation of combustion of a material by an internal chemical or biological reaction that has produced sufficient to ignite the material
Spontaneous Ignition
What is Chemical Chain Inhibition
Extinguishment of a fire by interruption of the chemical chain reaction
How many FFs minimum to preform overhaul operations?
Teams of two or more
Percentage of a material dissolved in water
Concentration
Main hose carrying area of a pumper or other piece of apparatus designed for carrying hose
Hose bed
An upright post in the framework of a wall for supporting sheets of lath and plaster, wallboard, or similar material
Stud
Large-diameter outlet, usually 4.5 inches, at a hydrant or at the base of an elevated water storage container
Steamer Connection
What is a dewatering device?
A pump used to remove water from basements, elevator shafts, and sumps.
At what part of a vehicle are you LEAST likely to find hydraulic or pneumatic struts that may explode during a fire?
a. hood
b. bumper
c. trunk lid
d. headlights/tail lights
D. Headlights/ Tail lights
Counterforce directed against a person holding a nozzle by the velocity of water being discharged
Nozzle reaction
Structural support made from a long steel bar that is bent at a 90 degree angle with flat or angular pieces welded to the top and bottom
Lightweight steel truss
Total amount of thermal energy that could be generated by the combustion reaction if a fuel were completely burned
Heat of Combustion
Form of drain opening provided in outer walls at floor or roof level to remove water to the exterior of a building in order to reduce water damage
Scupper
Which type of stream will expose the maximum water surface for heat absorption?
a. fog
b. solid
c. broken
d. straight
A. Fog
What is the difference between exothermic and endothermic reaction
Endothermic absorbs heat, exothermic releases heat
Minimum flow rate at which extinguishment can be achieved
Critical Flow Rate
Level at a compartment opening where there is an equal difference in pressure exerted by expansion and buoyancy of hot smoke flowing out of the opening and the inward pressure of cooler, ambient temp air flowing in through the opening.
Neutral Plane
Waterproof carrier used to carry and catch debris or used as a water sump basin for immersing small burning objects
Carryall
What is a safety consideration when fighting fires involving electric or hybrid vehicles?
a. when the engine is running, there may not be any noise
b. dangerous high-voltage cables are most commonly colored green
c. use purple K dry-chemical agent or high-expansion foam instead of water
d. vehicle battery packs are required to be located in the trunk or rear of the vehicle
A
Personnel accountability system
Location where hot gases and the products of combustion leave a structure
Exhaust
The shared assumptions, beliefs, and values of group or organization.
Culture