ch1 Fire hose and couplings

Question 1

Municipal fire departments usually limit the diameters of their fire hose to blank inches

Answer 1

6

Question 2

Fire flow

Answer 2

the quantity of water available for fire-fighting operations in a given area

Question 3

In blank IAFE passed its first resolution to set standards for fire hose screw threads

Answer 3

1873

Question 4

as early as blank nfpa began developing thread specifications for fire hose couplings

Answer 4

1898

Question 5

for 2.5 inch couplings the principle dimensions of blank threads per inch and blank inches outside diameter

Answer 5

7.5 tpi, 3 1/16th in.

Question 6

prompted by the 1904 baltimore fire an nfpa committee in 1905 set out to?

Answer 6

standardize not only couplings, but also fire hose, nozzles, and accessories

Question 7

the standard for fire hose coupling screw threads for sized 2.5 in and larger was approved by ASA in?

Answer 7

May 1925

Question 8

in blank NFPA adopted standards for threads on 4,5, and 6 in supply hose

Answer 8

1955

Question 9

NFPA adopted dimensions for gaskets from 3/4 to 6 inches for standard fire hose couplings as well as provided data on the required gasket seat dimensions in?

Answer 9

1956

Question 10

Attack hose

Answer 10

hose that is used by trained firefighters members to combat fires beyond the incipient fire stage

Question 11

supply hose

Answer 11

hose that is designed for the purpose of moving water between a pressurized water source and a pump that is supplying attack hoselines

Question 12

suction hose

Answer 12

intake hose that connects pumping apparatus or portable pump to a water source

Question 13

forestry fire hose

Answer 13

small-sized lightweight hose that is designed to meet the specialized requirements for fighting wildland fires

Question 14

occupant use fire hose

Answer 14

hose used by a building’s occupants to fight incipient-stage fires before the arrival of trained firefighters

Question 15

booster hose

Answer 15

noncolllapsible, preconncted hose having an elastomeric or thermoplastic tube, a braided spiraled reinforcement, and an outer protective cover; used for small, incipient stage exterior fires; often carried on reels

Question 16

small diameter hose

Answer 16

fire hose that is between .5 and 3 inches in diameter and is most often used as attack hose

Question 17

large diamter hose

Answer 17

fire hose that is 3.5 inches or larger in diameter

Question 18

design service test pressure

Answer 18

pressure equal to approximately 110 percent of the operating pressure; test conducted by the manufacturer

Question 19

Burst test

Answer 19

destructive test on a 3-foot length of hose at 3 times its labeled service test pressure to determine its maximum strength

Question 20

test conducted by the manufacturer to ensure fire hose meets standards; measures movement of leaking couplings in a suppply connection when pressurized to a pressure two times the service test pressure

Answer 20

Proof Test

Question 21

the percent a length of hose increases in length from an initial measurement with the hose pressurized at 10 psi

Answer 21

elongation

Question 22

structural support in the form of woven,braided, or spiraled yarn within a rubber-covered hose

Answer 22

reinforcement

Question 23

Distance a hose elevates above the test table while under pressure

Answer 23

rise

Question 24

yarns running lengthwise down a hose

Answer 24

warp

Question 25

maximum distance any portion of a fixed length of hose deviates from a straight line drawn from the center of the fitting at one end to the center of the fitting a tthe other end with the hose pressurized to an established test pressure or its proof test pressure

Answer 25

warp

Question 26

yarns running circumfrentially around a hose; measure in picks per inch

Answer 26

weft

Question 27

Attack hose is differentiated from other catagories by?

Answer 27

its minimum service test pressure of 300 psi

Question 28

All new fire hose must successfully pass several performance tests to ensure that it is manufactured in compliance with the hose standard?

Answer 28

NFPA 1961 standard on fire hose

Question 29

supply hose that connects a pumping apparatus or portable pump to either a pressurized or nonpressurized source

Answer 29

Intake hose

Question 30

Suction supply hose requires 15 feet of large soft sleeve hose or 20 feet of hard suction hose on a pumping apparatus, additionally, 800 feet of hose that is 2.5 in or larger in diameter and 400 feet of 1.5 - 2.5 inch attack hose must be provided on a pumping apparatus

Answer 30

nfpa 1901 standard for automotive fire apparatus

Question 31

the minimum design requirement for hose lengths is that it be between bland and blank percent of its stated length at the time of acceptance

Answer 31

-2 and +4

Question 32

the outer cover located on a double jacketed hose is often referred to as?

Answer 32

wear jacket

Question 33

a process where the rubber is pressed between opposing rollers to produce a flat sheet of material

Answer 33

calendaring

Question 34

forms a seamless tube by forcing a heated mass of rubber or thermoplastic through the orifice of an extrusion machine die

Answer 34

Extrusion

Question 35

NFPA requires each length of fire hose to be indelibly marked in letters and number at least blank in. high

Answer 35

1

Question 36

Supply hose must be marked with words "Supply Only" with letters atleast blank in. high

Answer 36

2

Question 37

A blank is a fitting permanently attached to the end of a hose length to connect two sections together or attach it to devices such as nozzles, appliances, hydrants

Answer 37

coupling

Question 38

The purchasing organization has blank days to conduct the service test after delivery of new hose

Answer 38

90

Question 39

The portion of the coupling that serves as a point of attachment to the hose is called?

Answer 39

shank

Question 40

Casting is usually done to make blank couplings

Answer 40

occupant use fire hose

Question 41

extruding is the method used to create blank type couplings?

Answer 41

aluminum

Question 42

drop forging is used to make blank couplings

Answer 42

brass

Question 43

one of the oldest ways to attach a threaded coupling to a fire hose involves the use of a malleable metal band called a?

Answer 43

expansion ring