evidence based structural firefighting

Question 1

The rate at which a fire releases energy or the fire’s power is represented by which of the following measurements?

Answer 1

Heat Release Rate

Question 2

Which state must a fuel be in for combustion to take place?

Answer 2

Vapor

Question 3

The transfer of heat in the form of electromagnetic waves that carry energy from one object to another is called

Answer 3

radiation

Question 4

the neutral plane is the:

Answer 4

horizontal plane where exhaust and inlet meet

Question 5

is it possible to have more than one flow path in a residential structure

Answer 5

yes

Question 6

a decaying ventilation-limited fire needs to draw in additional air (oxygen) to continue burning, otherwise it will self-extinguish because the lack of oxygen will stop the combustion process

Answer 6

true

Question 7

typically the fire will be in which stage/state upon fire department arrival

Answer 7

ventilation limited

Question 8

the ability to contain a fire to an area and limit the spread of fire and smoke to other areas of a structure is called

Answer 8

compartmentation

Question 9

what construction feature is most likely to contribute to fire extension upward through the walls of the structure

Answer 9

balloon frame

Question 10

the thick quilted part of a turnout coat is the

Answer 10

thermal liner

Question 11

the current testing criteria allow for a hole in the SCBA face-piece as long as it provides a positive pressure environment for 24 minutes on a 30 minute bottle

Answer 11

true

Question 12

heat transfers through compressed turnout gear faster than through uncompressed gear

Answer 12

true

Question 13

which method of gross decon would you select for the most effective removal of PAHS and other toxicants from your turnout gear

Answer 13

wet-soap decontamination

Question 14

the greater the thermal difference and the height of the structure, the greater the buoyancy force

Answer 14

true

Question 15

when a hose stream is aimed at an energized electrical component, a distance of ___ feet reduced potential shock hazard from a 1000 Vdc source to a level considered safe

Answer 15

20

Question 16

in a fire in a strip mall, if suppression is delayed, keeping the fire compartment closed can limit the heat release rate if the fire, limiting the potential thermal damage

Answer 16

true

Question 17

when performing hydraulic ventilation post suppression, of the egress path (enclosed stairwell) of a multi-family dwelling is of most concern:

Answer 17

the ventilation opening should be made in the fire apartment, with the door to the stairwell remaining open

Question 18

the presence of exterior smoke and fire upon the arrival of the fire in a multi-family dwelling is a clear indication that there are no survivable spaces within the fire compartment

Answer 18

false

Question 19

continued cooling as the hoseline is advanced on the interior will reduce the thermal hazard for firefighters engaged in suppression and others operating in the area of the fire, including potential trapped occupants

Answer 19

true

Question 20

the steeper the angle of the water applied through the doorway or window into the fire compartment the more the water is evenly distributed along the ceiling and side walls of the room coating more of the surfaces in their entirety

Answer 20

true

Question 21

If you are trying to move air or smoke with a hose stream you should:

Answer 21

Increase the movement of the nozzle

Question 22

The introduction of cool water into a fire compartment reduces temperatures, resulting in:

Answer 22

Gas contraction and a reduction in temperature

Question 23

When identifying survivable spaces in a multi-family dwelling, areas _________ the compartment of origin and _________ in the space have the highest chance of survival.

Answer 23

Further from; lower

Question 24

which of the following is true regarding vertical ventilation that is conducted prior to having a charged hoseline in place and ready to conduct suppression operations

Answer 24

vertical ventilation allows additional air to be entrained into the fire allowing it to grow and conditions to deteriorate, defeating its intended purpose

Question 25

The use of a hose stream for ventilation is called:

Answer 25

hydraulic ventilation

Question 26

The most efficient way to get a handle on a knee wall fire is to:

Answer 26

Control the source fire, cool the gases, and then aggressively open the knee wall to complete extinguishment

Question 27

the most effective way to ensure the pressure in the fire room is lower than the pressure from the PPA in adjacent compartments is to

Answer 27

make the exhaust openings larger than the inlet openings