Operations Resource Management, Water and Wastewater

Question 1

What are the two purposes of fire hydrants?

Answer 1

Fire Fighting and Flushing the system.

Question 2

Why is ti important to flush a water system?

Answer 2

To remove sediments that build up over time.

Question 3

How many times should the system be flushed?

Answer 3

Twice per year ( Spring / Fall )

Question 4

What are the two functions of valves?

Answer 4

To shut down hydrants and shut down mains

Question 5

What purpose does storing water serve?

Answer 5

It enhances water pressure and meets the NJDEP requirements for one days storage to be stored.

Question 6

Name three ways water may be stored?

Answer 6

An elevated tank, a reservoir or ground storage

Question 7

There three types of pumps, name them.

Answer 7

Vertical, turbine and split horizontal

Question 8

What is the purpose of well or high service pumps?

Answer 8

For pumping large amounts of water to higher elevations

Question 9

When do pumps stop and start?

Answer 9

As water rises and falls in the storage tank

Question 10

The purpose of a meter is to?

Answer 10

monitor usage for the purpose of billing and regulate consumption

Question 11

Why is it important to eliminate dead ends?

Answer 11

To provide better circulation and to reduce areas to be flushed regularly

Question 12

You can eliminate dead ends by

Answer 12

Looping the lines. This may require the use of easements

Question 13

Rusty water does the following to the consumer aesthetically

Answer 13

Stains fixtures, Stains Clothes and Clogs Screens and Aerators

Question 14

The purposes of Manholes are

Answer 14

Inspection, Testing, Sampling and Maintenance

Question 15

How are Manholes constructed?

Answer 15

Brick, Blocked and Poured

Question 16

Name five types of maintenance equipment

Answer 16

Sewer Jetter, Sewer Rodding Machine, Sewer Inspection Television Systems, Vacuum Trucks, Small Rotary cable units, Air Bags for stopping flow or Pneumatic plugs,Shovels, Brooms, scoop and buckets

Question 17

Name five types of pipes used in sewer construction.

Answer 17

Ductile Iron
Clay or Terracotta
Asbestos Concrete Pipe (ACP or Transite)
Reinforced Concrete Pipe (RCP)
Polyvinyl Chloride (PVC)
Plastic Corrogated 
Porous Wall Pipe

Question 18

What causes sewer pipe failures?

Answer 18

Roots, Age and Improper Bedding

Question 19

A Fernco Fitting is?

Answer 19

A rubber fitting that connects two unlike or like types of pipes

Question 20

What chemicals may be used in sewer maintenance?

Answer 20

Sewer Compound ( Metal Chip )
Degreasers
Bacteria Enzymes
Copper Sulfate ( Root Control )

Question 21

Sewer Maintenance Equipment May include?

Answer 21

Sewer Flusher
Electric Eel
Sewer Inspection System
Pneumatic Plugs
Root Controls
Tracing Dye

Question 22

Older Wastewater piping is generally replaced with?

Answer 22

Durable Polyethylene piping

Question 23

Factors in the design of a sewer system include

Answer 23

Areas to be served ( present and future )
Population and industry ( present and future )
Quantity of sewage carried
Topography
Character of the sewage ( fresh grey or septic black )

Question 24

How often should your sewer system be maintenance?

Answer 24

Once per year

Question 25

Sewer failures are caused by three main sources, what are they?

Answer 25

Misuse, Faulty Engineering or Poor Construction

Question 26

Name the types of breaks in sewer lines

Answer 26

Contraction or Shearing
Horizontal or Lateral Break
Cracking
Longitudinal

Question 27

Confined Space Entry refers to?

Answer 27

A safety program that insures the safety of a person entering a space not intended for human habitation

Question 28

What types records are normally kept?

Answer 28

NJDEP required reporting
Operating requirements
System Maps
Valve and Curb Stop Locations
Hydrant Maintenance
Maintenance of Mains
Plant Maintenance
Pump and Motor Maintenance
Operation and Maintenance Manual