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39 Cards in this Set
- Front
- Back
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size up
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facts
probabilities/possibilities own situation plan tactics |
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3 command modes
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investigation
fire attack command |
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RECEO VS
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Rescue
Exposures Cofinement Extinguisment Overhaul Ventilation Salvage (can be entered at any time) |
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goal of fire attack
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well cordinated
aggressive well placed safe effective |
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offensive
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interior attack
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offensive precautions
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flashover or backdraft
imminent building collapse fire above, below, and behind hoseline management holes or other fall hazards hazardous or highly flamm material electrical hazard |
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defensive
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exterior attack
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determine mode by
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fire extent and location
fire affect on building savable occupants savable property entry and tenability vent profile resources risk v gain |
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tactics for second due
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back up initial attack line
protect secondary means of egress prevent fire extension protect most threatened exposure assist in extinguishment assist in fireground ops |
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why water
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1700 time expansion rate
1 gal absorbs 10000 btu abundant stable |
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disadvantages of water
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conducts electricity
freezes/slippery heavy (contributes to collapse) poor surface tension reactive with some materials doesnt mix with hydrocarbons |
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quint
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aerial with a pump
waterways pre plumbed can be used for rescue |
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aerial ladder
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hydraulically operated extension ladder
50 to 135 ft may have built in waterway called a "stick" |
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aerial platform
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aerial platform or aerial articulating platform
-has a platform -rescue |
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hoseline selection
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fire load
fire conditions volume of water needed to extinguish stream reach needed ff available need for speed and mobility tactical req ease of hoseline deployment potential fire spread |
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smooth bore
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solid stream
50 psi common on east coast |
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fog (combo)
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small water droplets
straight stream, narrow, medium, wide 100 psi common on west coast |
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broken stream
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bounced of ceilings
solid stream broken into coarsely divided drops cellar and piercing |
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3 types of fire attack
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indirect
direct combo |
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direct
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most efficient use of water
solid stream or narrow fog short burst least water damage |
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indirect
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outside of compartment
use when unable to enter room or structure direct stream toward ceiling -upset thermal balance |
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combo
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t, z ot o pattern
clockwise start at ceiling totally upsets thermal balance (done from outside) |
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entry into structure
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open door slowly
stay low/crouch against wall dont open nozzle until neccessary stay oriented |
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vehicle fires hazards
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smoke
flamm liquids electricity compressed gases explosions (struts) |
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vehicle fire tactics
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100 ft hot zone
traffic 1.5 handline minimum upwind |
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vehicle fire tactics
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approach at 45
water application-underbody, bumpers, tires control engine compartment prior to opening hood |
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hi rise
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ALS Base
First in companies attack lobby staging base |
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hi rise tactics
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dont use elevator
connect hoseline 1 floor below fire |
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how big of hazed zone on high rise
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200'
or as conditions dictate or 1 1/2 times height |
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confined space
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oxygen deficient
toxic flamm gases extreme temps explosive dust limited means of entry/egress |
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flamm gas
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nat gas and piqufied petroleum gas
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natural gas
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methane in purest form
explosive in concentrations of 5-15% stored and shipped in cylinders marked CNG |
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LPG
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butane/ propane is most common though
stored and shipped in bottles explosive in concentration 1.5 to 10 percent |
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BLEVE
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Boiling Liquid Expanding Vapor Explosion
-flames contacting tank shell above liquid -500 gpm to every point of flame impingement within 10 minutes |
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flamm liquids
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flash point less than 100
dont need to be preheated |
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combustible liquids
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flash pints higher than 100
-kerosene and veg oil -must be heated above flashpoint before ignited |
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hazard w flamm and combustible liquid fires
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-dont stand in pools of liquid
wicking effect benzene fumes known carcinogen |
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transmission lines
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1 span atleast
fog stream 100 psi lockout tagout careful raising ladders aviod ground gradient |
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ground gradient
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current passing from downed power line through ground along path of least resistance
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