Ch 3 Engine Company Operations

Question 1

Fire progress through the following three stages what are they? Pg 40

Answer 1

1. The incipient stage
2. The free burning stage
3. The smoldering stage

Question 2

What are the three methods of attack modes? Pg 40

Answer 2

Direct method, indirect method, and the combination method

Question 3

What stage is when the fire is small. Heat and smoke conditions are light, and the fire is confined to its original area? Pg 40

Answer 3

The incipient stage

Question 4

What stage has the fire greatly increased in intensity. The rooms are either approaching flashover or have passed it? Pg 40

Answer 4

The free burning stage

Question 5

What is the method of attack often used in the free burning stage? Pg 43

Answer 5

Combination method

Question 6

What stage is the fire is no longer burning freely? Pg 46

Answer 6

The smoldering stage

Question 7

As all methods of attack have prerequisites, so too does the indirect attack. The four key requirements are the following?

Answer 7

1. No occupants
2. Limited ventilation
3. High heat
4. Limited size of the potential fire area

Question 8

What are responsible for most of the spread of fire to exposures? Pg 53

Answer 8

Radiation and direct flame exposure

Question 9

After what amount of time should the likelihood of a backdraft occurring be over when breaking the front plate
glass window of a strip mall store?
p. 50

Answer 9

30 seconds

Question 10

Which operating mode tends to be the best choice in situations where there is a possibility of BLEVE? p. 53

Answer 10

No attack

Question 11

What is the first tactic that should be attempted when you suspect that a backdraft explosion is possible? p. 46

Answer 11

Ventilate the affected area

Question 12

In which stage will more fires be encountered by the fire
service today? p. 41

Answer 12

Ventilation-limited

Question 13

What element is missing when backdraft explosion conditions are present? p. 46

Answer 13

Oxygen

Question 14

After what amount of time should the IC realize that the fire is going to win?
p. 57

Answer 14

20 minutes

Question 15

What building feature can be used to find the fire room when there is a blackout condition in an apartment
building? p. 42

Answer 15

Doors

Question 16

Where should the stream be directed when protecting an exposure during defensive operations? p. 53

Answer 16

On the exposure’s exterior wall

Question 17

In what does a large part of the problem rest when a fire is allowed to extend beyond the structure of origin?
p. 57

Answer 17

Failure to conduct an ongoing scene size-up

Question 18

What length frontage can a 75-foot (23-meter) elevated platform cover if it is able to operate in front of the building? p. 58

Answer 18

100 foot

Question 19

How many gallons of steam does each gallon of water convert to when fully vaporized during an indirect attack? p. 48

Answer 19

1,500 to 2,000 gallons

Question 20

In which occupancy do most potential backdrafts seem to occur? p. 47

Answer 20

Commercial buildings at night

Question 21

During which stage is the fire still small and heat and smoke conditions are light? p. 40

Answer 21

Incipient

Question 22

In which fire stage are most of the elements needed for a successful indirect attack present? p. 47

Answer 22

Third

Question 23

What type of fog pattern should be directed into a small opening in a window when utilizing an indirect attack? p. 48

Answer 23

30^

Question 24

In an average apartment fire, after what amount of time would the IC realize that there is something wrong if the fire has not darkened down?
p. 58

Answer 24

10 minutes

Question 25

What is the most likely solution when heat is the root cause of thwarting the advance of the hoseline? p. 56

Answer 25

Ventilation opposite the advancing hoseline

Question 26

During a defensive attack what are units positioned to protect? p. 53

Answer 26

Exposures

Question 27

How should firefighters move when advancing the hoseline into the fire area? p. 43

Answer 27

Duck walk

Question 28

When should the application of water occur in potential backdraft situations when possible? p. 49

Answer 28

After topside ventilation

Question 29

Which method of attack should be effective on a fire in the incipient stage? p. 40

Answer 29

Direct

Question 30

What size hoseline should be positioned outside of the danger zone when it is necessary to break the front plate glass window of a strip mall store which is showing backdraft potential?
p. 50

Answer 30

2 1/2-inch (6.4 cm)

Question 31

What should be undertaken as soon as possible at the fire scene that will make all other tasks easier? p. 55

Answer 31

Suppression

Question 32

In which part of the Class 3 building can a backdraft occur when there is a free-burning fire? p. 50

Answer 32

Cockloft