IFSTA CH 12 Fire Hose

Question 1

The primary characteristics to describe fire hose include

Answer 1

type of construction/materials used
internal diameter
couplings used to make connections

Question 2

supply hose

Answer 2

transports water from a hydrant or other water supply to an apparatus equipped with a pump

Question 3

attack hose

Answer 3

transports water at increased pressure from the following sources

• pump-equipped apparatus to nozzles
• pump-equipment apparatus to a FDC
• building standpipe tot he point the water is applied to the fire

Question 4

hose diameter

Answer 4

the size of a fire hose refers to its inside diameter

Question 5

hose length

Answer 5

both attack and supply hose are manufactured in 50ft (15m) to 100ft (30m) sections

Question 6

meters to feet conversion

Answer 6

1m = 3.2ft

Question 7

suction hose (intake hose)

Answer 7

used to connect the pumper to a hydrant or other water source

Question 8

hard suction hose

Answer 8

generally constructed in 10ft long sections and is designed for drafting water from static water supplies or connecting to fire hydrant

Question 9

hose couplings

Answer 9

connect hose sections to form a continuous hose line and to connect fire hoses to nozzles, hydrants, pumper connections and FDCs

Question 10

two different threaded couplings

Answer 10

male and female

Question 11

male coupling thread

Answer 11

is cut on the exterior surface

Question 12

female coupling thread

Answer 12

is on the interior surface of a free-turning ring called a swivel

Question 13

shank

Answer 13

portion of the coupling that serves as a point of attachment to the hose

Question 14

higbee cut

Answer 14

flattened angle at the end of the threads on the male and female coupling that prevents cross-threading when couplings are connected

Question 15

higbee indicator

Answer 15

indentation on the exterior of the coupling marks where the higbee cut begins

Question 16

lugs

Answer 16

gasping points where FF can easily hold the couplings when making and breaking coupling connections

Question 17

three types of lugs are found

Answer 17

pin
recessed
rocker

Question 18

nonthreaded couplings

Answer 18

using locks or cams rather than screw heads

Question 19

two varieties of nonthreaded couplings

Answer 19

quarter-turn
storz

Question 20

quarter-turn coupling

Answer 20

has two hook-like lugs on each coupling

the lugs which are grooved on the underside, extend past a raised lip or ring on the open end of the coupling

When the couplings are mated, the lug of one coupling slips over the ring of the opposite coupling and then rotates 90 degrees clockwise to lock

Question 21

storz

Answer 21

most commonly found on large diameter hose

they are joined and then rotated until locked in place to form a connection

Question 22

non threaded coupling advantages

Answer 22

fire hose can be connected quickly

there is no risk of cross threading

double-male or double-female adapters are not needed

Question 23

non-threaded coupling disadvantages

Answer 23

Hose can become uncoupled, often suddenly and violently, if a complete connection has not been made

Hydrants require adapters to make connections

Dirt and large debris can become lodged inside the couplings grooves, giving the impression of a tight seal when a hose is actually not connected

Question 24

inspecting hose

Answer 24

hose should be inspected and service-tested within 90-days before being placed in service for the first time and at least annually thereafter

Question 25

washing hard rubber booster hose/hard intake hose/rubber-jacket collapsible hose

Answer 25

only require rinsing with clear water, although mild soap may be used if necessary

Question 26

washing woven-jacket hose

Answer 26

requires a little more care any dust and dirt should be thoroughly brushed or swept off of the hose

Question 27

drying hose

Answer 27

should be dried before being stored

Question 28

Take the following precautions to prevent damage to hose stored in racks

Answer 28

Locate hose racks in a clean, well-ventilated room that is easily accessible to the apparatus room/bay Store hose where it is not exposed to direct sunlight Pack cotton fabric hose loosely so that air circulates around it Store hose so that couplings are not in walkways and will not come into contact with equipment or passing personnel Roll the hose with the male end inside the roll to protect the male coupling threads Place two-way couplings in a storage rack in a way that prevents dirt or other foreign objects from collecting in their ramp grooves

Question 29

damage to hose

Answer 29

mechanical thermal organic chemical corrosion age

Question 30

mechanical damage

Answer 30

abrasions, cuts and tears

Question 31

thermal damage

Answer 31

exposure to fire, heat or freezing temperatures

Question 32

organic damage

Answer 32

mold and mildew

Question 33

chemical damage

Answer 33

deterioration due to solvent action on synthetic materials and natural fibers

Question 34

corrosion damage

Answer 34

rusting of metal couplings

Question 35

age deterioration

Answer 35

cracking at points where hose is folded and separation of inner liner from exterior covering

Question 36

straight roll

Answer 36

start at the male coupling end and roll toward the female coupling end simplest of all hose rolls

Question 37

straight roll is commonly used for hose in the following situations

Answer 37

Transporting damage or dirty hose to the station for repair, replacement or cleaning Storing sections of hose in a storage rack or other location Carrying spare sections of hose in apparatus compartments Making hose loading easier

Question 38

donut roll

Answer 38

commonly used when hose is likely to be deployed for use directly from a roll

Question 39

donut roll advantages

Answer 39

FF has control of both couplings, which protects them from damage hose rolls out easier with fewer twist or kinks holding both couplings enables a quicker connection to other couplings

Question 40

hose loads

Answer 40

there must be a minimum of 800ft (240m) of larger supply hose and 400ft (140m) of attack fire hose

Question 41

three most common loads for supply hose lines are

Answer 41

flat accordion horseshoe

Question 42

flat hose load

Answer 42

easiest to load works for any size of supply hose and is the best way to load large diameter hose less likely to damage from apparatus vibration during travel

Question 43

disadvantage of the flat hose load

Answer 43

is the hose folds contain sharp bends at both ends of the bed, which requires the hose to be reloaded periodically to change the location of the bends

Question 44

accordion hose load

Answer 44

hose is laid on edge in folds that like adjacent to each other

Question 45

combination load

Answer 45

This load permits the apparatus to make a forward lay from the water source to the fire, followed by a revers lay back to the water source One half of the bed is loaded with female coupling exposed and other half ahs the male coupling exposed

Question 46

dutchman serves two purposes

Answer 46

changes the direction and/or location of a coupling

Question 47

preconnects

Answer 47

primarily lines most fire departments use for fire attack generally range from 50ft to 250ft in length

Question 48

clearing the bed

Answer 48

regardless of the type of load used, the preconnect hose must be fully deployed from the hose bed before charging the line

Question 49

preconnect flat load

Answer 49

adaptable for varying sizes of hose beds and is often used in transverse beds is similar to a flat load except that exposed loops are provided for pulling hose from the bed

Question 50

triple layer load

Answer 50

The load begins with hose folded in three layers, the three folds are then laid into the bed in an S-shaped fashion Load is designed for one person to pull

Question 51

minuteman load

Answer 51

One person can pull and advance this load This load can be carried on the shoulder, completely clear of the ground, which makes it less likely that the hose will catch on obstacles The load deploys from the shoulder as the firefighter advances towards the fire

Question 52

Booster hose reels

Answer 52

Are rubber-covered hose that are usually carried preconnected and coiled on reels The hose works well for a quick, first attack on small exterior fires Direct connection provides instant water flow no matter what length of hose is needed