Shared Flashcard Set

Details

Firefighting - Chapter 15
Fire Control
55
Other
Undergraduate 1
09/26/2012

Additional Other Flashcards

 


 

Cards

Term
Minimal equipment carried by entry team
Definition
portable radio, hand light, pike pole, forcible entry tools
Term
First places to extinguish fires
Definition
fires showing corners, exterior overhangs, or around entry or egress
Term
Agent most often used to extinguish structure fires
Definition
water
Term
When to use booster lines
Definition
overhaul for small nuisance fires (smoldering in leaf litter, trash cans)
Term
Smallest handline allowed in interior firefighting
Definition
1 1/2
Term
1 1/2 inch hose line gpm, reach and persons
Definition
40-125 gpm, 25-50 ft, 1-2 people
Term
1 3/4 inch hose line gpm, reach and persons
Definition
40-175 gpm, 25-50 ft, 2 people
Term
2 inch hose line gpm, reach and persons
Definition
100-250 gpm, 40-70 ft, 2-3 people
Term
2 1/2 inch hose line gpm, reach and persons
Definition
125-350 gpm, 50-100 ft, 2-4 people
Term
Master stream gpm, reach and persons
Definition
350-2,000 gpm, 100-200 ft, 1 person
Term
Before entering a burning building...
Definition
every member of the crew should conduct a quick size-up and maintain a high level of situational awareness.
Term
Gas cooling
Definition
not a fire extinquishment method but a way or reducing the hazard of the hot gas layer; effective when faced with shielded fire and cannot attack the material without moving into the room

Short pulses of water fog (40-60 degree) upward into the gas layer
Term
When water droplets fall during gas cooling...
Definition
gases have been cooled, gas cooling can stop
Term
Direct attack
Definition
straight or solid stream right onto the burning materials

can be done in 'penciling' or 'painting'

water should NOT be applied long enough to upset thermal layering and produce steam (then smoke will drop rapidly and move sluggishly when steam condenses)
Term
Indirect attack
Definition
attack through a window or small opening, usually during defensive operations

fire streams directed towards the ceiling, steam fills the compartment and absorbs the heat; after ventilation, hoselines can advance
Term
Difference between direct and indirect attack
Definition
Direct is started inside the compartment, indirect is started outside
Term
Combination attack
Definition
cooling the hot gas layer, and then attacking the materials on the floor

penciling up into the ceiling level, then painting the combustibles
Term
Water on cold smoke
Definition
does not extinguish the fire and may produce unnecessary water damage
Term
Main uses for master streams
Definition
direct fire attack, backup handlines already attacking from the exterior, exposure protection
Term
Master stream angle alignment
Definition
aim the stream so that it enters the structure at an upward angle, hits the ceiling, and breaks up into smaller particles to rain down on the fire

should also be where it can cover the most surface area if the direction needs to be changed (multiple openings)
Term
Master stream supplies
Definition
must be at least two 2 1/2 inch hoselines, maximum of 100 feet of hose to reduce friction loss

may have to shut down handlines to keep from using up water supply
Term
Stationing master stream devices
Definition
minimum of two firefighters to deploy; one must stay with the master stream (unless too hazardous)
Term
Quints
Definition
aerial apparatus with a pump; ladders range from 50-75 ft

waterways are preplumbed to their pumps, so the only external support needed is water supply

main ladder can also be used for rescues
Term
Aerial ladders
Definition
apparatus with an extension ladder, 50-135 feet; newer ones have built-in waterways, but older ones must have a ladder pipe attached first

master stream can be operated by firefighters on the ground or at the ladder tip

can also be used for rescues
Term
Aerial ladder platform
Definition
aerial ladders with an attached platform
Term
Articulating aerial platform
Definition
platform attached to the end of a hinged boom, NOT a ladder

range from 55-85 ft, built-in waterway

may still have a narrow escape ladder
Term
Water tower
Definition
engines with booms that are dedicated to applying water

range from 50-130 feet

NOT designed for rescue
Term
Electrical power for an ENTIRE building should be turned off...
Definition
ONLY WHEN ORDERED TO DO SO
Term
Lockout/tagout device
Definition
put over the main power switch to a building if it has to be turned off; if no device is available, a firefighter with a radio should be assigned to tend to it
Term
Agent on computer equipment
Definition
clean extinguishing agents

dry-chemical multipurpose can be used, but my by chemically reactive with electrical components

if water MUST be used, apply from a distance in a fog stream
Term
Electrical power lines down
Definition
whether or not a fire is started, an area equal to one span between poles should be cordoned off around the break; if a fire does start, firefighters should wait for the fire to burn away a distance equal to one span before extinquishing
Term
Tranformer fires
Definition
coolant liquids may contain PCBs, these are flammable and carcinogenic

use a dry chemical to extinguish transformers at the ground level; at pole-level, allow fire to burn until utility personnel can extinguish with a dry-chemical from an aerial device
Term
Underground transmission lines
Definition
consists of conduits and vaults below grade; can present explosions cased by fuses blowing or short-circuiting arcs, enough to blow off the caps

keep the public back one block (300 ft) from the site, make sure appartus is not positioned over the cover

firefighters should not enter one except to attempt rescue; C02 or dry chemical can be sprayed inside and cover replaced; water not recommended
Term
High-Voltage fires
Definition
current is in excess of 600 volts; water should NOT be used, and toxic smoke is an additional hazard

firefighters should only enter if rescue operations require it, and hold onto a tag line

should search with a clenched fist or back of hand to prevent reflexive grabbing of equipment if it is touched accidentally

decon for smoke
Term
Removing the electric meter
Definition
NOT recommended, unsafe and does not allways stop flow of electricity
Term
Hazards in drug labs
Definition
electrical hazards with makeshift wiring; volatile chemicals; booby traps
Term
Ground gradient
Definition
electrical current passing from a power line through the ground

maintain a large safety zone around downed electrical wires
Term
Combustible metal fire temps
Definition
greater than 2,000 degrees, even when no flames are present and fire appears to be out
Term
Items for the first responding officer to consider
Definition
occupants in need of rescue
contents on fire, or is whole structure burning
exposures threatened by fire
sufficient resources on scene or en route
Term
First-due engine company priorities
Definition
intervene between trapped occupants and the fire
protect resucers
protect primary egress
protect interior exposures
protect exterior exposures
initiate extinquishment from the other side
operate master streams
Term
First priority of second-due engine company
Definition
ensure adequate water supply to fireground
Term
Priorities of second-due engine company
Definition
WATER SUPPLY
Back up initial attack line
Protect secondary egress
Protect fire extension
Protect most threatened exposure
Assist in extinquishment
Assist with fireground support company operations
Term
Search priorities
Definition
Most severely threatened
Largest number threatened
Remainder of fire area
Exposures
Term
Blitz attack
Definition
aggressively attack a fire with an LDH fire stream
Term
Staging in a high-rise building
Definition
usually two floors below fire floor
fire attack initiated from floor below fire floor (firefighters look to get a general idea of layout of fire floor
extra hose flaked to the floor above fire floor
Term
Attacking with a cellar nozzle
Definition
TIC is used to find seat of fire

hole is cut in floor

cellar nozzle inserted and run

vent basement, nozzle crew can complete extinquishment
Term
Procedures for attacking a fire in an occupied vehicle
Definition
Position hoseline between the vehicle and exposures
Attack from a 45 degree hangle to the long axis of the vehicle
Extinquish any fire near the occupents first
Issue 'all clear' when occupants are out of the vehicle
Extinguish any ground fire around or under vehicle
Extinguish any fire remaining in or around vehicle
Term
Fires in vehicle's undercarriage
Definition
if there is a hazard in getting close to a vehicle, use a straight stream from a distance to reach under the vehicle

if the vehicle is on a hard surface, direct the stream downward and allow water to deflect up to the underside

open the hood and direct the stream through the engine compartment
Term
Overhauling a vehicle
Definition
Disconnect the battery, secure air bags, cool fuel tanks
Term
Catalytic converters
Definition
used to reduce vehicle emissions, but can act as an ignition source to dry grass or fuels under vehicle

external temp is 1,300 on a tuned vehicle, but can be 2,500 on a poorly tuned vheicle
Term
Trash container fires
Definition
Attack with at least 1 1/2 inch hoseline

be wary of toxic fumes

use class A foam
Term
Main influences of wildland fire behavior
Definition
Fuel, weather and topography

weather is the most significant
Term
Aspect
Definition
compass direction a slope faces; determines the effects of solar heating

in North America, full southern exposures receive more direct sunlight and therefore more heat
Term
Standard on Protective Clothing of Wildland Firefighting
Definition
NFPA 1977
Term
Equipment of wildland firefighters
Definition
helmet, flame retardant shirt and pants (or jumpsuit), boots without steel toes, gloves, fire shelter; other equipment by agency
Supporting users have an ad free experience!