Tn Distribution Test

Front 1

A flow of 4.8 cubic feet per second is equivalent to a flow of how many gallons.

Back 1

2,154

Front 2

The horizontal members which run parallel to the trench walls and to which braces are attached are called?

Back 2

Stringers

Front 3

Paint systems for steel water tanks shall be consistent with the

Back 3

AWWA

Front 4

Which is part of the upper section of a dry barrel fire hydrant.

Back 4

Cap nut, outlet nozzle, seat ring, main valve

Front 5

One foot of head equals

Back 5

2.31 feet of head

Front 6

On newly constructed or repaired water lines, a chlorine dose must have contact time of 24 hours, with a free Chlorine residual of at least ________mg/l throughout the main

Back 6

25mg/l

Front 7

453.6 grams equals

Back 7

1 pound

Front 8

One cubic foot of water equals

Back 8

7.48 gallons

Front 9

Class 200 pressure rates PVC pipe may be used where the working pressure does not exceed __________ psi

Back 9

135

Front 10

The top of pipe is the crown and the bottom of the pipe is the

Back 10

Invert

Front 11

Which parts are located in the lower section of a fire hydrant?

Back 11

Cap nut, lower main rod, upper valve plate

Front 12

In Tennessee, all distribution mains must be provided with sufficient earth or other suitable cover to prevent freezing. What is the minimum amount of cover necessary, measure above the top of the pipe?

Back 12

30”

Front 13

Who is used to determine the grade of a treatment facility, distribution system or collection system?

Back 13

Rules governing operator certification

Front 14

According to AWWA standards, when conducting a pressure test on a PVC line, the pressure on the line during the test should not be less than 125% of the normal pressure at the highest elevation, but at least what percentage of the working pressure at the point of the test.

Back 14

170%

Front 15

All paints and coatings must be acceptable to who to be approved by the state of TN

Back 15

EPA OR NSF

Front 16

What degree slope for type A soil

Back 16

53 degrees

Front 17

What degree slope for type B soil

Back 17

45 degrees

Front 18

What degree slope for type C soil

Back 18

34 degrees

Front 19

You’ve determined the volume of a water tank, in cubic feet. To determine how many gallons the tank will hold, you

Back 19

Multiply volume by 7.48

Front 20

The water meter that has the lowest head loss of any other meter is the ________ meter

Back 20

Magnetic

Front 21

Which of the following is a positive displacement type meter

Back 21

Notating disc

Front 22

Solders and flux used in the installation or repair of any public water system shall be lead free. The term lead free is defined as

Back 22

0.2%

Front 23

Who or what authorizes operator certification

Back 23

Water environmental health act ( water and wastewater certification act)

Front 24

A portion of the main valve assembly of a standard compression hydrant that closes against the seat is called

Back 24

Upper valve plate

Front 25

A level sensing device that forces a constant volume of air into a liquid for which the level is being measured is called

Back 25

Bubble tube

Front 26

The continued education period shall end _______ of each year

Back 26

September 30th

Front 27

Centrifugal pumps cannot operate unless?

Back 27

The impeller is submerged in water

Front 28

What can cause a false positive chlorine residual reading when performing the DPD method?

Back 28

Precipitate

Front 29

What is the proper detention time for disinfecting a water storage tank that is filled with chlorinated water such that the free chlorine residual is 10 mg/l after the proper sententious time is

Back 29

6 hours

Front 30

What is the proper detention time for disinfecting a water storage tank that is mixed with hypochlorite already in the tank such that the free chlorine is 10mg/l after proper detention time is complete

Back 30

24 hours

Front 31

The heart of the pump is called what?

Back 31

Impeller

Front 32

Which type of valve is used to isolate a pump on the suction side?

Back 32

Gate valve

Front 33

What pipe material when new, has a C factor of 150

Back 33

PVC

Front 34

Most backflow incident that cause health problem ma involve what?

Back 34

Gastrointestinal problems

Front 35

What type of meter is most common for individual service lines

Back 35

Positive displacement meter

Front 36

Underwater inspection of storage facilities by divers or submersible equipment should follow?

Back 36

ANSI/AWWA Standard C652

Front 37

Unless a variance is granted, certificate renewal applications must be received by?

Back 37

June 30th

Front 38

The continued education period shall end?

Back 38

September 30th

Front 39

Which method under AWWA standard C652 must the entire tank volume reach a free chlorine residual of at least 10mg/l after proper detention time?

Back 39

Method 1

Front 40

A pressure reducing valve has two upper operating chambers sealed from each other by a?

Back 40

Flexible, reinforced diaphragm

Front 41

Auxiliary water sources regarding cross connections fall under the supervision of whom?

Back 41

A primacy agency

Front 42

What label should be on plastic pipe

Back 42

Standard 61 certified

Front 43

Purpose of backfilling?

Back 43

Carries and transfers surface loads

Front 44

Multi column tanks generally have how many ladders

Back 44

3

Front 45

I’m catholic protection what direction is the flow

Back 45

Reverses flow

Front 46

Best time of year to inspect tanks

Back 46

October to April