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211

A simple friction loss formula:

FL = Q (Q+Q+1)

212

Fog nozzle _____psi

Master stream smooth bore ___ psi

Handline smooth bore _____ psi

For elevation calculate ____ psi per _____ of elevation.

_____psi per 10 ft floor

100

80

50

1/2 psi per foor

5 psi pg 155

213

Friction loss that cannot be overcome on the foreground must be overcome by _____

3 steps to determine pump discharge pressure

Pump dischage pressure

calculate the constants
Elevation
Friction loss in the hose

214

Steps to reduce friction:

Reduce hose length
use larger hose
Reduce # of couplings and appliances
reduce kinks
change nozzle type and size

215

_____ , _____, and ______ all affect friction loss

size of hose
length of hose
type of nozzle

216

_____ shape fire streams

Nozzles
Fog - most widely used. Better cooling capabilities than any other nozzle . * They can be affected by wind. they may require 100 psi to be effective. New ones are 75 psi .They can disturb thermal layering if applied incorrectly

Smooth bore - creates solid stream of water. Does not disturb thermal layering. Better reach and penetration. Not as affected by wind

Broken stream nozzles - water is applied blindly

217

_____ typically does not require a large amount of water or pressure

Overhaul

218

The amount of water needed to extinguish a fire is known as :

3 formulas for this:

NFA formula

Iowa State university formula

Insurance services office formula

Flow requirement

None of these 3 formulas address the material in the building

219

Water extinguished fire in 3 ways:

Cools burning material

Smothers it

Sports the fuel from the heat

220

Engine use a _____ pump

3 states of water _____ _____ _____
states most important when talking about extinguishment?

At ____ degrees water begins to freeze

At _____ degrees it is converted into _____

Centrifugal

solid, liquid, gas

32

212

at 212 it expands 1700 times its origanol volume

221

When a faucet is turn on, water flows because of the ______

Normal operating pressure

222

_____ is the most prevalent extinguishing agent for 3 reasons

It cannot be _______

Water

Cheap, commonly available, efficient

Compressed * it takes the shape of its container

223

Common extinguishing agent for FF's

Water
Dry chem
foam
Dry powder

224

are identified by various codes standards, laws, and ordinances

Occupancy classifications

225

Occupancy classifications

Assembly, business, daycare, educational, factory/ industrial, hazardous, institutional, mercantile, residential, storage

Mixed - 2 occupancy classifications in the same building

226

The final phase for pre incident planning is to :

There is no set time for updating pre plan but _____ can be used as a guideline

Update the plan regularly

Once a year

227

Pre incident Plan

Sketch does not have to be to ______

Standard for pre incident plans NFPA _____

Scale

1620

228

Building heating systems are often located in the :

Basement

229

Pre Fire Plan

______ are invaluable in determining construction features.

Basic info including :name of business, _______, ________.

The tour should begin in the ______

Blue prints

Owner / occupant contact info, Key holder information

*******Parking lot ******

230

Phases of pre incident planning:

* begins with a tour of building
* Any life safety hazards should be mitigated while on scene. Schedule a follow up fire inspection.

1 tour the bldg
2 create sketch
3 incorporate photos
4 complete drawing and docs
5 Put docs on truck
6 sharing and training
7 tour regularly
8 update plans

231

Pre incident planning should be completed by ______

* It is a systemic approach to learning the major components of a building

FF should be in a different building ______ they report to the fire house

Fire companies

Everyday

232

Fire grows _______ and ________

Fire is a combustion process that can be _____

Upward and outward

Self sustaining reaction

233

At the very least the IC should obtain a view of _____ sides

Dark black smoke

Dirty brown smoke

Light smoke

Smoke looks different at night***

3

Hydrocarbons

Oxygen starved fire

Class A fire

234

Smoke is produced by the incomplete combustion of _____. It contains _____ ______ and multiple _______.

Until smoke is controlled in a fire the fire will be difficult to ______ and _____

Fuel

tar, water and gases

Locate and extinguish

235

An oxygen starved fire builds up ___- and ____

Fire does not have to smolder long to backdraft

______ must occur prior to FF entering the structure to prevent backdraft

Air must be drawn in for ______ for ignition to occur

Heat and pressure

Vertical ventilation

a few seconds

US navy simulates backdrafts

236

Premature horizontal ventilation can cause ?

Backdraft

Yellowish brown smoke
stained black windows
thick smoke "under pressure"

237

High ceiling can mask the amount of heat.

Indicators of impending flashover:

Room size
Unbearable heat
Rollover of finger like flames

238

In flashover temps can exceed ____ and _____ ft into the room is the _____
Mean death or critical thermal burns

* cool ceiling
* smoked banked and floor with escalating heat

1000 degrees F

5 ft point of no return

239

The point when all combustible in a room ignite ______

An early indicator of flashover ______

The heating process is caused by _____

Key to recognizing flashover is _______

Flashover

Rollover

Thermal radiation feedback

Smoke movement and fire growth
pg120

240

Direct flame impingement is sometimes considered a form of :

radiation