Chapter 11

Question 1

What are the two methods that can be used to compute fire flow test results?

Answer 1

Graphical analysis and mathematical method

Question 2

What is the easiest way to determine how much water is flowing from a hydrant outlet?

Answer 2

Refer to prepared tables for nozzle/outlet discharge

Question 3

Which of the following is the BEST way to locate partially closed valves before they pose a problem?

Answer 3

Routine testing

Question 4

Which type of hydrant should be located as close as possible to the location requiring flow test results?

Answer 4

Test hydrant

Question 5

Valves in water systems are usually the _____ type and located underground.

Answer 5

nonindicating

Question 6

Which material(s) will be needed to complete the inspection of fire hydrants?

Answer 6

Pitot tube and gauge

Question 7

What is the purpose of a fire flow test?

Answer 7

To determine the rate of fire flow available for fire suppression

Question 8

What information do calculations or graphical analyses from fire flow tests provide?

Answer 8

Amount of water flow from individual hydrants

Question 9

How often should control valves be exercised?

Answer 9

At least once a year

Question 10

The basic water supply system component that includes water pumps is:

Answer 10

means of moving water.

Question 11

What should inspectors refer to when trying to determine the coefficient of discharge for a specific nozzle?

Answer 11

Manufacturer’s recommendations

Question 12

How often should hydrant inspections take place?

Answer 12

At least once a year

Question 13

Fire protection engineers have established _____ as the minimum required residual pressure when computing the available water for area flow-test results.

Answer 13

20 psi (140 kPa)

Question 14

In general, where should the test hydrant be located in relation to the flow hydrant when testing a single hydrant?

Answer 14

Between the flow hydrant and the water supply source

Question 15

Unless some effort is made to steady the _____, the movement of the water will make an accurate reading difficult.

Answer 15

pitot tube

Question 16

During hydrant inspections, inspectors need to verify that the clearance between the bottom of the discharge outlet and the grade is at least:

Answer 16

15 inches (380 mm).

Question 17

What is used to indicate a hydrant’s ownership and flow capacity?

Answer 17

Paint

Question 18

Water distribution and storage systems include:

Answer 18

storage tanks, control valves, piping systems, and hydrants.

Question 19

Which type of control valve usually has a rubber or rubber-composition seat that is bonded to the valve body?

Answer 19

Butterfly valve

Question 20

A _____ delivers water from the source to the distribution system without pumping equipment.

Answer 20

gravity system

Question 21

Who is responsible for the inspection, testing, and maintenance of private water supply systems?

Answer 21

Facility owners/occupants

Question 22

A _____ may be an open lake or pond or an enclosed structure.

Answer 22

reservoir

Question 23

Water mains that convey large quantities of water to various points are:

Answer 23

primary feeders.

Question 24

Before beginning a flow test, an inspector should verify that the air chamber on the pitot tube is:

Answer 24

drained.

Question 25

If the needle on the pressure gauge is fluctuating, read and record the valve located:

Answer 25

in the center between the high and low extremes.

Question 26

Small water mains that serve individual fire hydrants are:

Answer 26

distributors.

Question 27

Which basic water supply system component includes lakes, reservoirs, and ponds?

Answer 27

Water sources

Question 28

The interlocking network of water mains that compose a water distribution system is referred to as a:

Answer 28

grid system.

Question 29

Storage tanks located throughout a water distribution system are usually constructed of:

Answer 29

concrete or steel.

Question 30

What entity is usually responsible for public water supply systems?

Answer 30

Local government

Question 31

What size outlets should generally be used to conduct hydrant flow tests?

Answer 31

2½-inch (65 mm)

Question 32

Which type of hydrant is designed for use in climates that have freezing temperatures?

Answer 32

Dry-barrel

Question 33

When testing multiple hydrants, where should the test hydrant be located?

Answer 33

Centrally located

Question 34

Before conducting a fire flow test, an inspector should notify:

Answer 34

a water department official.

Question 35

The system for moving water by installing pumps in the distribution system when elevation pressure cannot provide sufficient pressure is a:

Answer 35

direct pumping system.

Question 36

Which type of obstructions include growths, crusts, or rust on the inside walls of water mains?

Answer 36

Encrustations

Question 37

The BEST method for evaluating the capabilities of a water supply system is:

Answer 37

reviewing documentation.

Question 38

Which tanks are used to stabilize or balance the pressures on distribution systems at times of peak demand?

Answer 38

Gravity tanks

Question 39

Why do workers close control valves?

Answer 39

To initiate repairs

Question 40

Hydrant discharge outlets are considered standard if they contain:

Answer 40

one large (4- or 4½-inch [100mm or 115 mm]) outlet and two hose outlet nozzles for 2½-inch (65 mm) couplings.

Question 41

Which problem is the MOST important when it comes to elevated tanks?

Answer 41

Limitation of pressure available from the tanks

Question 42

Which water main includes intermediate pipes that interconnect with primary feeders to create a grid?

Answer 42

Secondary feeders

Question 43

Which tanks are located at ground level and provide a water supply source for fire pumps?

Answer 43

Suction tanks