Engine Ops

Question 1

Classical decision making

Answer 1

step by step logic analyze the situation identify problem create solutions

Question 2

naturalistic decision making

Answer 2

intuitive reaction sights sounds memory

Question 3

The three categories of fire service training

Answer 3

self study
company training
multiunit

Question 4

Flashover

Answer 4

between growth in fully developed stages

all substances reach ignition temperature at once

Question 5

Backdraft

Answer 5

during decay stage

heated gases reach ignition temperature and explode when oxygen is introduced

Question 6

Thermal layering

Answer 6

Gases layer up do the temperature differences

Question 7

Stratification

Answer 7

Layering of smoke and gas clouds during fire

Question 8

pyrolysis

Answer 8

Combustible gas is driven from substances due to heat it feels

Question 9

Four stages of fire growth

Answer 9

incipient- ignition chain reaction occurs

growth- development rollover extension

fully developed- all contacts involved

decay- all oxygen consumed reversal air movement

Question 10

Heat release rate of modern materials compared to ordinary

Answer 10

Modern materials do this 10X faster than older materials

Question 11

Hydraulic ventilation

Answer 11

Fog nozzle 2’ from opening 80% of opening covered

Question 12

Ventilation considerations

Answer 12

where is the fire
what is currently ventilated
what effect will further vent have
where are the hose lines

Question 13

Five steps in risk assessment

Answer 13

Life hazard 
fire conditions
 victim survivability 
structural stability
 resources

Question 14

Tactical withdraw

Answer 14

Transition offense of the defensive remove crews from structure from top down

Question 15

Water conversion to steam ratio

Answer 15

1:1700 at 212 degrees

Question 16

Reach of mercury monitor

Answer 16

Smoothbore/ Street stream 185 feet medium fog 50 feet

wide fog 25 feet

Question 17

Estimating hose line stretches per a structure

Answer 17

setback + width + length + 25 feet per floor + 50 feet at point of attack

Question 18

Adults

Answer 18

Advanced fire conditions
 defensive operations
 unknown fire location
 large open area 
tons of water
 standpipes

Question 19

what actions can only the engine officer call for?

Answer 19

water 
open nozzle 
stream type and direction
 line advancement or retreat 
stream shut down

Question 20

Latent heat of vaporization

Answer 20

quantity of heat absorbed by substance when it changes from a liquid to a vapor

Question 21

Time available to Flowmaster streams with no water supply

Answer 21

60 to 90 seconds

Question 22

Fixed gallonage fog nozzle

Answer 22

Preset GPM regardless of pattern standard 100 psi low pressure 50 to 75 psi

Question 23

Select gallonage fog nozzle

Answer 23

Operator manually change is GPM

Question 24

Nozzle reaction
smoothbore
equation

Answer 24

1.57 X D^2 X NP

Question 25

Nozzle reaction equation fog nozzle

Answer 25

.0505 X GPM X Square root of nozzle pressure

50 psi = 7.05
80 psi = 8.9
100 psi = 10

Question 26

Three elements needed prior to a response

Answer 26

Incident type
location address
run order

Question 27

Roll over

Answer 27

Flames present in layers of smoke occurs during growth phase

Question 28

Victim survivability profiling

Answer 28

Human threshold for heat 212°

oxygen less than 10% atmospheric death

CEO at 200 ppm dead for 12 seconds

Question 29

Except for single-family dwellings it is important to determine positioning for at least the first ——- engine companies in the ——— truck companies during preplanning

Answer 29

2 engines

1 truck

Question 30

How often should companies attempt to conduct a building walk-through

Answer 30

Once a tour

Question 31

Today’s fires burn at a rate ——- times faster with rapidly increasing he compared to fires just 20 years ago

Answer 31

10

Question 32

When does flash over occur

Answer 32

Between growth in fully developed stages

Question 33

Define radiation feedback

Answer 33

Ceiling and walls heat the smoke and gases giving off by the burning materials and the combustible contents of the room

Question 34

Define heat release rate

Answer 34

Energy released overtime

Question 35

Smoke density and color together or indicator of what

Answer 35

Flammability

Question 36

Velocity and pressure are indicators of what two things

Answer 36

amount of heat and flowpath

Question 37

What does smoke volume indicate

Answer 37

Amount of fire and fuel

Question 38

When does size up begin

Answer 38

Prior to the call walk-throughs training

Question 39

Define lift

Answer 39

Smoke level rising increasing the distance of clean air at the floor level

Question 40

If smoke is encountered from floor to ceiling companies must check wear for possible fire

Answer 40

Floor below

Question 41

How fast Smoke is moving is a good indicator of the fires —— and it’s ——to the fires location

Answer 41

Intensity and proximity

Question 42

what two categories are greatest threat to safety on the fireground?

Answer 42

Advanced fire conditions

collapse potential

Question 43

with CO levels at 200,000 ppm human is unconscious and will be dead in how many seconds

Answer 43

4-12

Question 44

penciling reduces heat in compartment by what percent

Answer 44

50-60%

Question 45

If a fire fighter arrives at point of attack with too much hose on the shoulder what type of hose line stretch they do

Answer 45

Alley stretch

Question 46

how many BTUs can 1 pound of water absorb

Answer 46

970 BTUs