chapter 10-17

Question 1

how does heat affect masonry?

Answer 1

stones and concrete may experience spalling when they are heated

Question 2

cast iron may crack or shatter when it is
a.heated indirectly
b.rapidly cooled with water
c.in contact with direct flames
d.used as a decorative structural element

Answer 2

b

Question 3

what building material has great heat resistance

Answer 3

gypsum wallboard
also known as dry wall

Question 4

explain how a hose should dry

Answer 4

hung up from a rack in a station. away from high heat or direct sunlight. don’t put into service until completely dry

Question 5

name some damage that will put a hose out of service

Answer 5

abrasions, cuts, tears, fire, heat, freezing, mold and mildew, rusting, cracking due to age, car exhaust

Question 6

what is a booster hose line

Answer 6

rubber covered hose that are coiled on reels. used for quick fire on small exterior fires

Question 7

what is a dry barrel hydrants?

Answer 7

designed in use for freezing climates. main control valve is located below the freeze line

Question 8

what is a wet barrel hydrant

Answer 8

has water in it at all times

Question 9

what is a CAFS system and how does it work

Answer 9

compressed air foam system. adds class a foam to the tank to spray foam off a fire truck

Question 10

name a static water source

Answer 10

lake
ponds
rivers
swimming pools

Question 11

what is a dry-hydrant connection

Answer 11

allows the fire truck to draft water from the lowest point of a static water source

Question 12

explain water shuttle operations

Answer 12

hauling water from a supply source to the incident scene

Question 13

what’s a jet siphon

Answer 13

used to transfer water from one tank to another

Question 14

what is a wye appliance?

Answer 14

divided a single hose line into two hose lines

Question 15

what is a siamese appliance

Answer 15

combines multiple lines into one

Question 16

whats ldh stand for

Answer 16

large diameter hose

Question 17

SDH?

Answer 17

small diameter hose

Question 18

what is a reducer hose fitting

Answer 18

used to connect a smaller diameter hose to a large one

Question 19

what is overhaul

Answer 19

firefighters enter the structure after the fire is out to ensure no chance for re-ignition. also to search for fatalities or other damages

Question 20

what are 4 tools used during overhaul

Answer 20

pike poles
axes
prying tools
power saws
drills
screwdrivers
shovels
thermal imager

Question 21

what should firefighters continue to do during overhaul

Answer 21

be aware
wear ppe at all times
watch for danger

Question 22

do you NEED to have a charged hose line while doing overhaul

Answer 22

yes absolute need

Question 23

where does overhaul typically begin?

Answer 23

at the most severe fire involvement. so start at where the fire was

Question 24

what is the area of origin

Answer 24

general location where the fire began. don’t touch this area in case the fire leads to legal issues

Question 25

what are some signs of arson

Answer 25

wind direction and velocity doors or windows locked or unlocked location of the fire containers or cans burglary tools familiar faces unusual orders incendiary devices

Question 26

what’s an exterior fire exposure

Answer 26

remove endangered persons property or items apply water or foam relocate vehicles move the fire truck

Question 27

what’s an interior exposure

Answer 27

involves closing doors between the fire and the unaffected area

Question 28

what’s an fdc and how does it work

Answer 28

fire department connection. used to connect to a hose line to have supplied water withing a big building like a hockey rink or football stadium. also connections used for sprinklers inside buildings

Question 29

whats a OS&Y valve?

Answer 29

Outside screw and yoke valve. shows with a screw if the valve is open or closed if it’s threaded out it’s open

Question 30

Natural gas

Answer 30

flammability 5-15% no smell methane non toxic rises in the air difficult to detect without instruments

Question 31

LPG- Liquified Petroleum gas

Answer 31

also known as propane 1 and 1/2 times as heavy as air so it will sink concentration between 2/9.5%

Question 32

Can firefighters turn off gas and electricity to a house or building?

Answer 32

yes we can but not completely. we can shut off the main breaker and valve. it will never fully be off until the city turns it off from the street to the house but we shut off from right up to the house and the whole house. NEVER EVER EVER turn it back on after the fires out. house will go boom.

Question 33

do you need to wear full ppe to a car fire. need to wear a mask?

Answer 33

yes, cars generate a wide variety of toxic smoke and vapor’s. treat it as a structure fire

Question 34

what should you do before starting extinguishing or using JAWS. name an example

Answer 34

isolate the vehicle from any ignition source. key fob

Question 35

where do you position yourself at a vehicle fire attack? where do you attack from?

Answer 35

position hose line between burning vehicle and exposures position uphill and upwind of the fire attack at a 45-degree angle

Question 36

what type fire is a vehicle fire?

Answer 36

type d most of the time. burning metals

Question 37

how does class d extinguisher work? what does it look like

Answer 37

like sand or powder. extinguishes metals. smothers it let it burn because metal fires are impossible to put out

Question 38

what are the three ways to put out an undercarriage fire?

Answer 38

direct attack bank of the ground through the hood and aim down