Engine company OPS

Question 1

Fire service training falls into 3 categories, what are they

Answer 1

Self study
company training
multi-unit training

Question 2

what makes up the fire tetrahedron

Answer 2

Fuel
chain reaction
oxygen
heat

Question 3

what is thermal layering

Answer 3

The tendency of gases to form into layers according to temp

Question 4

what is heat release rate defined as

Answer 4

the amount of energy released over time

Question 5

what are indicators of the flammability of smoke

Answer 5

the density of smoke and color

Question 6

smoke that is black/brown in color indicates what

Answer 6

fire is fully developed or decaying and smoke is too rich to burn

Question 7

RECEO VS

Answer 7

Rescue
exposure
confinement
extinguishment
overhaul
ventilation
salvage

Question 8

the earths atmosphere contains 2% oxygen. what are the percentages that will result in rapid death

Answer 8

less then 10

Question 9

To figure out Victim Survivability Profiling (VSP), firefighters have to conduct a thorough size-up of a structure fire and determine the likelihood of a victim’s potential to be rescued. There are several background factors that must be understood regarding the physiology of the human body. What does NFPA suggest the upper range of temperature tenability of the human body to be and a human body is rendered unconscious within 4 -12 secs at approximately how many PPM of CO?

Answer 9

212 deg. F/ 200,000 PPM

Question 10

the fire attack technique known as penciling will immediately decreases building heat within a compartment by

Answer 10

50%-60%

Question 11

A good way to estimate the length of a hose line to stretch is the use of situational awareness. Parking spaces in lots and telephone poles on the street are typically set at an approximate distance. What are the approximate distances of each?

Answer 11

10ft and 75ft

Question 12

well holes are found in what location

Answer 12

stairwells of most buildings

Question 13

what is the formula for nozzle reaction of a fog nozzle

Answer 13

0.0505 x Rathed flow x √nozzle pressure

Question 14

what is the formula for nozzle reaction of a smooth bore nozzle

Answer 14

1.57 x diameter squared x nozzle pressure

Question 15

without a water supply how long can a master stream be used before depleting the tank

Answer 15

60-90 seconds

Question 16

heavy dense smoke with no visible flames in tightly closed occupancy and smoke condensation and pulsation are all warning signs of what

Answer 16

possible backdraft

Question 17

_____ is the stage of fire where everything in the room or space have heated to their ignition temp and everything ignites at once

Answer 17

Flashover

Question 18

How many stages of fire growth are there

Answer 18

4

Question 19

when preforming hydraulic ventilation what percentage of the opening should the fog pattern cover to remove smoke and heat

Answer 19

80%

Question 20

all smoke is filled with ____ and ____ that if left unchecked will result in fire

Answer 20

carbon and carbon monoxide

Question 21

on the fire ground who is charged with conducting a thorough size up developing and implementing the initial strategy/tactics, and conducting fire ground tasks that often dictate the overall success of incident operations

Answer 21

first arriving source: Engine company

Question 22

when stretching a hose line to any upper floor apartment maximum hose length can be achieved by stretching the hose line through where

Answer 22

well-hole

Question 23

There are five construction types: fire resistive, non-combustible, ordinary, heavy timber, and wood frame. Most new home construction can be classified as……?

Answer 23

wood frame

Question 24

on a standard house fire which unit in the run orders lays the secondary supply line, visually inspects side “C” deploys 3rd house line and positions opposite first engine

Answer 24

3rd due engine

Question 25

the process where combustible gases are driven from solid fuels as they are heated

Answer 25

pyrolysis

Question 26

the four fire growth stages are

Answer 26

incipient growth fully developed decay

Question 27

heat release rate is defined as

Answer 27

amount of energy released over time

Question 28

what 4 indications form an incident profile regarding location status and extent of fire

Answer 28

smoke smoke density/color velocity volume of smoke

Question 29

The R in RECEOVS is the primary focus of an incident and stands for

Answer 29

Rescue

Question 30

A coordinated and specific relocation of units and their respective equipment operating from an area deemed untenable to a specific area deemed safe to continue operations and has a lesser degree of urgency compared to an emergency evacuation?

Answer 30

Tactical withdrawal

Question 31

a blitz attack is performed when

Answer 31

initial attack is defensive then transitions to offensive once the fire is knocked down by exterior streams

Question 32

a formula used for estimating the length of hose need is

Answer 32

set back + width of building + length of building + 25' per floor ( regardless of floor that fire is reported to be on), + 50' at point of attack

Question 33

a fire hose of what size and flowing how much water is sufficient for a typical house fire

Answer 33

1.75" @ 150-175gpm

Question 34

the mnemonic ADULTS is used to assist in selection of a 2.5" line. What does the A stand for

Answer 34

Advance fire conditions

Question 35

when chocking a door open in fire conditions where is it best to play the chock

Answer 35

low so it can be quickly removed to control door.

Question 36

Smooth bore = 1.57 x bore diameter squared x nozzle pressure is the formula published by NFPA for…….?

Answer 36

nozzle reaction

Question 37

When a second engine lays a supply line from the scene to a fire hydrant this is called…….?

Answer 37

reverse lay

Question 38

Immediately following shift line up members assigned to the engine company should do what?

Answer 38

inspect and examine all tools and appliances associated on apparatus

Question 39

Immediately following shift line up members assigned to the engine company should do what?

Answer 39

examine all hose loads racks nozzles and appliances

Question 40

When positioning apparatus whenever possible avoid what?

Answer 40

a layout that would place handlines in route of travel

Question 41

First due engine company will generally:

Answer 41

Drop supply line 360 of structure advance initial attack line

Question 42

Expecting the building to be on fire when you arrive on a call dispatched for a fire alarm is an example of?

Answer 42

how to eliminate complacent behaviors

Question 43

Who should personnel gather intelligent information from on fire alarm or fire calls in respect to the nature or location of an alarm?

Answer 43

fleeing occupants or building rep

Question 44

If an engine company arrives alone without a special service unit on an alarm, who should remain outside?

Answer 44

one firefighter along with the driver

Question 45

An Explosion that occurs when additional oxygen is introduced into a smoldering fire, heated gases enter their flammable range and ignite with explosive force.

Answer 45

backdraft

Question 46

Observed when flames present in layers of smoke as a result of heated gases that are pushed under pressure from the fire area into uninvolved areas.

Answer 46

rollover

Question 47

tendency of gasses to form into layers according to temp

Answer 47

thermal layering

Question 48

This stage begins when heat, oxygen, and fuel combine and have a chemical reaction

Answer 48

incipient stage

Question 49

occurs when the fire increases in size from small flames to full fire that involves the entire room this may be rapid or prolonged event

Answer 49

growth stage

Question 50

during this stage the entire room and contents are involved in fire

Answer 50

fully developed stage

Question 51

during this stage the potential for backdraft is present

Answer 51

decay stage

Question 52

What decision-making method is a step-by-step, logical sequence that the decision-maker uses to reach the best decision?

Answer 52

classical

Question 53

What decision-making method is an intuitive reaction to a problem?

Answer 53

naturalistic

Question 54

What component of the fire tetrahedron is needed to raise the material to its ignition temperature?

Answer 54

heat

Question 55

What component of the fire tetrahedron happens when the three elements are present in their necessary condition?

Answer 55

chain reaction

Question 56

What is the layering of smoke and gas clouds?

Answer 56

stratification

Question 57

This nozzle has a preset gallon per minute setting that allows it to flow the set gallonage at any stream setting (fog, straight, etc,) as long as the manufacturer rated nozzle pressure is maintained.

Answer 57

fixed gallonage fog nozzle

Question 58

A fire attack method that utilizes a fire stream applied through an opening, allowing the superheated atmosphere to turn the water into steam is called?

Answer 58

indirect attack

Question 59

The “D” in the acronym ADULTS stands for?

Answer 59

defensive

Question 60

The “T” in the acronym ADULTS stands for?

Answer 60

tons of water

Question 61

Using a smoothbore nozzle at 80psi on a Mercury quick attack monitor yields a reach of approximately ____’

Answer 61

185'