W1 ~ Water Distribution {Mick-Mick 2}

Front 1

People need safe and pleasant water to drink.

Back 1

True

Front 2

Cities and towns need qualified capable and dedicated water distribution system operators

Back 2

True

Front 3

All waters regardless of the source for treatment received, should be disinfected to prevent the spread of disease causing organisms

Back 3

True

Front 4

What is the main responsibility of water distribution system operators

Back 4

The health and well-being of the community they serve

Front 5

What is the purpose of adequate and reliable records

Back 5

To document the effectiveness of the operation

Front 6

What is one of the best results from a well - guided tour

Back 6

Gaining support to obtain the funds necessary to run a good operation

Front 7

What should you do after investigating the drinking water complaint ?

Back 7

Notify the person who complained, of the results and what corrective action was or will be taken

Front 8

As a water distribution system operator what does your total reward depend on

Back 8

How you apply yourself

Front 9

What kinds of tasks do water distribution system operators perform at Water Supply facilities ?

Back 9

Maintain, Manange, Operate, Repair

Front 10

A water Supply system delivers water from its source to which ultimate customers?

Back 10

businesses, homes, and industrial water users

Front 11

Which items are types of operational service storage tanks in water Distribution Systems?

Back 11

elevated tanks, ground-level tanks, pressure tanks and underground facilities

Front 12

What does a water distribution system consists of ?

Back 12

fire hydrants, meters, network of pipes, service lines, and valves

Front 13

Which items are typical duties of a water distribution system operator ?

Back 13

✦ evacuate trenches and install Shoring

✦flush and clean water mains

✦ Lay, connect, test and disinfect water mains

✦ place barricades signs and traffic cones around work sites to protect operators and the public

✦ TAP INTO WATER MAINS

Front 14

Which items are typical duties of a water distribution system operator ?

Back 14

ANSWER IN PICTURE ↑↑↑↑↑

Front 15

A Water distribution system operator may be responsible for which supervision and administration tasks?

Back 15

~ encouraging operators to strive for higher levels of certification

~ giving advice on budget requirements

~ give advice on future planning

~ keeping adequate and reliable records

~ training new operators

Front 16

The difference between the static ground water level and the pumping level is the

Back 16

drawdown

Front 17

A customer complaint about the presence of brown floc in tap water can best be handled by

Back 17

investigating the problem as soon as possible

Front 18

The term "aquifer" relates to which of the following...

surface water, a lake, stream or groundwater

Back 18

groundwater

Front 19

One indication of corrosive water is a high concentration of

Back 19

carbon dioxide

Front 20

Cathodic protection means protection against

Back 20

corrosion

Front 21

The primary reason for the use of a dry barrel fire hydrant is to

Back 21

keep the hydrant from freezing

Front 22

The component parts of a well include all of the following except

sanitary seal, well screen, pressure switch, cement grout

Back 22

pressure switch

Front 23

At the same barometric pressure, the amount of dissolved oxygen in cold water tends to be ________

the amount of dissolved oxygen in warm water.

Back 23

more than

Front 24

Water Storage facilities are used to store water from Wells or water treatment facilities at times when the demands for water are high and to distribute the water during periods of low demand.... true or false

Back 24

True

Front 25

Hydropneumatic tanks must contain the proper amount of _______ to be effective.

Back 25

Air

Front 26

What is the main purpose of a water storage facility ?

Back 26

To provide a sufficient amount of water to average or equalize the daily demands on the water supply system

Front 27

What is a limitation of elevated tanks ?

Back 27

The pressure in the distribution system may vary with the water level in the tank

Front 28

Back 28

Answer is # 4

Front 29

Back 29

Answer is # 1

Front 30

Why must care be used when operating and maintaining hydropneumatic tank facilities, especially the pressure relief valves ?

Back 30

Because of high pressure in the tank

Front 31

the capacity of a clear well should be sufficient to allow a Water Filtration plant to operate at what rate ?

Back 31

At a constant rate during periods of peak demands

Front 32

Back 32

ANSWER = 2, 3 & 5

Front 33

How can automatic water level regulation be achieved in storage tanks and reservoirs ? By using

Back 33

Altitude-control valve

Front 34

Chemical water quality problems may be caused by

Back 34

Leaching of chemicals from tank linings or coatings

Front 35

What is breakpoint chlorination ?

Back 35

The addition of chlorine to water or wastewater until the chlorine demand has been satisfied

Front 36

When is the best time of year to take a water storage facility out of service for complete cleaning and inspection

Back 36

During the period of lowest water consumption

Front 37

What is disinfection

Back 37

The inactivation or destruction of disease-producing organisms

Front 38

Why is sodium thiosulfate added to a bacteriological sampling bottle before it is sterilized

Back 38

To neutralize all chlorine in the water

Front 39

During Sub-Zero temperature conditions, how can ice formations in water storage tanks be minimized?

Back 39

By continuously fluctuating water surface levels

Front 40

Back 40

ANSWER 1,2,3 & 4

Front 41

What are the types of water storage facilities common to a water supply system ?

Back 41

Clear Wells, elevated tanks, ground-level storage tanks, Hydropneumatic or pressure tanks and standpipes.

Front 42

When compared with elevated storage tanks, why are standpipes preferred

Back 42

Because they are:

- easier to maintain

- more accessible for observation

- more accessible for sampling to determine the quality of the stored water

- safer to work around

Front 43

Back 43

2, 3, & 5

Front 44

Back 44

1 & 5

Front 45

Back 45

ALL

Front 46

Back 46

ALL

Front 47

Back 47

3 & 5

Front 48

Back 48

3 & 4

Front 49

One indication of corrosive water is a high concentration of

Back 49

carbon dioxide.

Front 50

Which of the following is the principal constituent in water that causes corrosion of metals ?

a. alkalinity

b. dissolved oxygen

c. hydrogen sulfide

d. sodium chloride

Back 50

dissolved oxygen

Front 51

A record containing the size, location, and ties of water mains; valves; hydrants; tanks; reservoirs; and pump stations is called a

Back 51

comprehensive map

Front 52

Velocity of flow in Mains is usually expressed in terms of

Back 52

Feet Per Second

Front 53

_______ And ________ methods can be used to remove high iron content from a well Supply

Back 53

Oxidation , Filtration

Front 54

Hardness me be expressed in

Back 54

milligrams per litre as CaCO3

Front 55

The basic unit of electrical power is the

Back 55

watt

Front 56

Check valves are used to

Back 56

permit flow in only one direction.

Front 57

The water table is defined as the

Back 57

upper surface of the groundwater

Front 58

A coupon test installation in a distribution system is used to

Back 58

determine the rate of scaling or corrosion

Front 59

The component of a centfifugal pump sometimes installed on the end of a suction pipe to hold the priming is known as a

Back 59

foot valve