Essentials Ch 13 Flashcards
Incident Stabilization means controlling and extinguishing the fire and is accomplished in three stages:
Locate fire
Confine fire
Extinguish fire
Pg 733
Fire behavior indicators that relate to tactical ventilation are:
Smoke Air Flow Heat Flame Pg 737
Smoke observations:
Volume of smoke discharge Location of smoke discharge Smoke color, density and pressure Movement of smoke Pg 737
Air flow is caused by:
Pressure differentials inside and outside a compartment
Differences in density between the hot smoke and cooler air
Pg 737
Which type of device uses only electricity to power for ventilation (blower vs smoke ejector)?
Smoke ejector requires electricity
Pg 742
The means used for horizontal and vertical ventilation are:
Natural (opening doors/Windows)
Mechanical (fans, blowers, ejectors)
Hydraulic (fog nozzle)
Pg 744
Leeward side is the side:
Protected side from the wind (opposite side from the wind direction)
Pg 74
Leeward or windward side is opened first for natural horizontal ventilation?
Leeward should be opened first to create an exit point
Pg 745
Negative pressure uses:
Ejector to pull smoke from a compartment to exhaust the smoke
Pg 745
When using hydraulic ventilation how much coverage is targeted on the opening / how far back is the nozzle?
85 - 90% of the opening, 2 feet back
Pg 750
Advantages of mechanical ventilation:
Supplements and enhances natural ventilation Ensures more control of air flow Speeds the removal of contaminants Reduces smoke damage Promotes good public relations Pg 751
Disadvantages of mechanical ventilation:
Can cause a fire to intensify and spread Depends upon a power source Requires special equipment Requires additional resources and personnel Pg 751
For vertical ventilation, an inspection hole is cut to help determine:
The location of a ire and the direction of travel of a fire that is located in an attic or cockloft.
Kerf cut (single cut the width of the saw blade)
‘A’ cut (triangle)
Pg 756
How far ahead of advancing fire is a trench cut made (defensive strategy)?
At least 30 feet ahead of advancing fire (3 - 4 ft wide) only after an offensive opening has been made as to not pull fire to the trench.
Pg 758
The personnel required for search and rescue and fire fighting operations in highrise blgs is often _____ to _____ times as great as required for a fire in a typical low rise bldg.
4 - 6 times as great
Pg 761
