Term
When heat hits a ceiling and begins to spread out and bank down horizontally. |
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Definition
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Term
Most notably produced gases in a fire. |
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Definition
Carbon Monoxide and Cyanide |
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Term
The flow of heated gases produced by the fire. |
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Definition
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Term
How do you eliminate potential backdraft? |
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Definition
Placing ventilation as high as possible within the building. |
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Term
Where should attack crews charge their hoseline? |
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Definition
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Term
When should the ventilation crew ventilate? |
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Definition
When the attack crew is ready to advance the attack line. |
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Term
How do you create a positive pressure zone? |
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Definition
Open windows and doors on the upwind side of the house. |
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Term
On a cold day what will happen to heat in a high rise? |
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Definition
there will be a strong updraft |
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Term
Fire Resistive Construction is made out of what? |
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Definition
non combustible and limited combustible materials |
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Term
When fire spreads from floor to floor by a window. |
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Definition
Leap-frogging (auto-exposure) |
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Term
Limited combustible or non combustible exterior walls, with wood insides. |
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Definition
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Term
An open area inbetween the top floor and the roof. |
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Definition
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Term
3 Tactical priorities for ventilation |
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Definition
1.Life Safety 2.Fire Containment 3.Property Conservation |
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Term
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Definition
Toward a ventilation opening, following the flow of heat and smoke. |
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Term
thin, light-colored smoke moving lazily out of a building usually indicates... |
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Definition
a small fire involving ordinary combustibles. |
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Term
Thick, dark, grey smoke pushing out of a building suggests what... |
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Definition
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Term
What produces a large amount of black, rolling smoke that rises in a column? |
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Definition
a fire involving petroleum products |
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Term
limited smoke can indicate... |
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Definition
that there is a lack of ventilation |
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Term
When smoke hangs low to the ground on a cool damp day. |
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Definition
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Term
How does smoke move when it is really hot? |
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Definition
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Term
products of combustion that must be removed from the building |
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Definition
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Term
Outside air that replaces toxic combustion products in a building |
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Definition
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Term
Horizontal vent. is commonly used where? |
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Definition
Residential Fires, room-and-contents fires, and fires that can be controlled quickly by an attack team |
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Term
When is H.V. most effective? |
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Definition
When it goes directly into the room or space with the fire. |
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Term
H.V. tactics include what? |
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Definition
Natural and Mechanical methods |
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Term
What is an easy way to protect rooms from smoke? |
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Definition
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Term
depends ont he convection currents, wind, and other natural air movements to ventilate. |
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Definition
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Term
Nat.V. can only be used when? |
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Definition
natural convection currents or wind are adequate. |
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Term
Nat.V. is often used when what is needeD? |
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Definition
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Term
What windows do you open first? |
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Definition
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Term
What uses existing or created openings? |
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Definition
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Term
How do you break glass with a ladder? |
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Definition
Put the tip into the upper half of the glass. |
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Term
How long is the ladder for a 2nd floor window? |
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Definition
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Term
Extension ladders are used to break windows on what floor? |
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Definition
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Term
When breaking a window with a ladder what direction do you want the glass to fall? |
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Definition
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Term
How do you break a window from a roof? |
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Definition
Attach a halligan to a rope or chain and toss it over the edge to swing into the window. Or use a pike pole to reach down. |
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Term
How should you treat the opening of a door? |
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Definition
As a major act of ventilation |
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Term
When should you open a door for ventilation? |
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Definition
When an attack team has a charged hose line and is ready to attack. |
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Term
What can indicate an under ventilated fire? |
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Definition
Air sucking into a building when you open the door. |
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Term
3 methods of Mechanical ventilation. |
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Definition
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Term
What kind of ventilation uses ejectors? |
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Definition
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Term
Information about HVAC systems should be obtained when? |
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Definition
Preincident planning surveys |
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Term
What size are smoke ejectors usually? |
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Definition
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Term
How can you power smoke ejectors? |
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Definition
Electricity, gasoline, water pressure. |
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Term
When is NP generally used? |
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Definition
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Term
Can NP be used on a roof? |
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Definition
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Term
When do you clean ejectors? |
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Definition
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Term
What reduces the effectiveness of an ejector? |
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Definition
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Term
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Definition
when exhausted air is immediately recirculated through a fan. |
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Term
What kind of motors do ejectors have? |
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Definition
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Term
Where can you most effectively place a PPV van? |
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Definition
3 - 4 feet outside the door |
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Term
When performed properly PPV can... |
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Definition
push heat and smoke out of the buidling through an exhaust vent on the opposite side of the building. |
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Term
PPV doesnt work properly when? |
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Definition
There are too many openings |
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Term
When using PPV the entry and exit openings should be what size? |
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Definition
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Term
What happens to the fire the first few minutes that PPV has been introduced? |
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Definition
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Term
What should you check for before placing down a PPV fan? |
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Definition
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Term
Where can fans be placed when ventilating large structures? |
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Definition
Side by side or one behind the other |
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Term
Which type of fan requires the most cleaning after each use? |
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Definition
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Term
What are the disadvantages of PPV? |
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Definition
Unwanted fire spread Very noisy Internal Combustion engines (increased carbon monoxide levels) |
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Term
On some fans, when tipped down what happens? |
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Definition
the oil sensor will cause it not to start. |
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Term
How do you use hydraulic ventilation? |
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Definition
shoot water from a fog stream or broken steam from a smooth bore out a window or a door. |
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Term
When is Hydraulic ventilation most effective? |
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Definition
after the fire is under control |
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Term
If a roof is made of lightweight truss material how do you ventilate it? |
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Definition
Use an ariel ladder or basket |
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Term
How many exits are required when working on a roof? |
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Definition
2 Exits preferably on opposite sides |
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Term
Does sounding a roof always work? |
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Definition
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Term
2 major components of a roof |
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Definition
support structure
roof covering |
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Term
Rigid layer on a roof made of wooden boards, plywood sheets, or metal panels. |
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Definition
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Term
If one truss fails does the whole section fail? |
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Definition
Not always, but it is weakened. |
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Term
A roof supported by bar joists will do what before it collapses? |
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Definition
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Term
what kind of roof has a parapet wall? |
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Definition
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Term
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Definition
Walls that extend above the roof. |
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Term
thin, parallel strips of wood |
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Definition
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Term
Bowstring trusses are usually constructed of wood and spaced how far apart? |
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Definition
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Term
4 types of vertical ventilation |
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Definition
Built in inspection Primary(expandable) Secondary(Defensive) |
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Term
A slit cut with a power tool into a roof used for examination. |
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Definition
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Term
If you are able to after cutting the roof open what size should the hole in the ceiling be? |
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Definition
The same size as the roof hole. If not use a pike pole to break out as much as possible. |
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Term
Which cut is good on a flat or sloping roof with plywood decking? |
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Definition
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Term
What type of roof works well with a triangular cut? |
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Definition
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Term
What type of roof can you use a peak cut on? |
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Definition
peaked roofs sheeted with plywood |
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Term
A cut that creates a large opening ahead of the fire to prevent spread. |
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Definition
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Term
A cut that is made from one exterior wall across to the other. |
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Definition
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Term
What is another name for Trench Cut? |
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Definition
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Term
Which cut is considered a defensive ventilation tactic? |
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Definition
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Term
On a metal roof, what indicates the seat of the fire? |
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Definition
Discoloration and Warping |
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Term
Which cut prevents metal from rolling away. |
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Definition
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Term
PPV is least suitable approach for which method? |
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Definition
Fire and structural void spaces. |
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Term
How can the TIC be set to help fire fighters search quickly? |
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Definition
To distinguish small temperature differences. |
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Term
What is the major benefit of using a TIC? |
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Definition
It can "see" the image of a person in conditions of total darkness or through smoke. |
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Term
Can a TIC tell you which way the fire is spreading? |
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Definition
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Term
On a helmet mounted TIC where is the image shown? |
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Definition
In front of the users SCBA face piece |
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Term
When entering a room how do you determine how many walls it has? |
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Definition
If there is a parallel wall to the left and right it has 5 walls, if there is only 1 parallel wall it has 4 walls. |
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Term
When do you use search ropes? |
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Definition
When it is impossible to search a place using just the walls.
Areas with interconnected rooms
Areas with multiple aisles created by counters or storage racks |
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Term
How many fire fighters should be at the anchor point of a search rope? |
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Definition
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Term
Can you let go of the rope and venture off a couple feet to search? |
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Definition
Depends on the department |
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Term
Who came up with the "Oriented Search"? and where is he from? |
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Definition
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Term
What is an Oriented Search? |
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Definition
When a fire officer stays at the door to monitor the situation while the fire fighters search the room. |
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Term
who calls for an evacuation of a room when the search crew is performing an Oriented Search? |
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Definition
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Term
When using the Vent-Entry-Search method, what is vent? |
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Definition
Opening a window where conditions in a room are tenable. |
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Term
When using the Vent-Entry-Search method, what is entry? |
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Definition
Entering the window asap after venting and closing the door to shut off oxygen to the fire. |
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Term
Because Vent-Entry-Search is dangerous, when should you do it? |
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Definition
In an emergency situation where saving life is possible. |
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Term
Why is Vent-Entry-Search such a high risk action? |
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Definition
It places the fire fighter in between the fire and the ventilation hole. |
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Term
Who tells the fire fighter its okay to do a Vent-Entry-Search? |
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Definition
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Term
When is a secondary search performed? |
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Definition
When the fire is under control OR extinguished. |
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Term
When do fire fighters need a hose line when doing a Secondary search? |
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Definition
When they are in a burned area. |
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Term
When should a secondary search start? |
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Definition
As soon as the fire is under control and sufficient resources are available. |
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