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Flashcards in Operations Resource Management, Water and Wastewater Deck (28)
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1

What are the two purposes of fire hydrants?

Fire Fighting and Flushing the system.

2

Why is ti important to flush a water system?

To remove sediments that build up over time.

3

How many times should the system be flushed?

Twice per year ( Spring / Fall )

4

What are the two functions of valves?

To shut down hydrants and shut down mains

5

What purpose does storing water serve?

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

6

Name three ways water may be stored?

An elevated tank, a reservoir or ground storage

7

There three types of pumps, name them.

Vertical, turbine and split horizontal

8

What is the purpose of well or high service pumps?

For pumping large amounts of water to higher elevations

9

When do pumps stop and start?

As water rises and falls in the storage tank

10

The purpose of a meter is to?

monitor usage for the purpose of billing and regulate consumption

11

Why is it important to eliminate dead ends?

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

12

You can eliminate dead ends by

Looping the lines. This may require the use of easements

13

Rusty water does the following to the consumer aesthetically

Stains fixtures, Stains Clothes and Clogs Screens and Aerators

14

The purposes of Manholes are

Inspection, Testing, Sampling and Maintenance

15

How are Manholes constructed?

Brick, Blocked and Poured

16

Name five types of maintenance equipment

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

17

Name five types of pipes used in sewer construction.

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

18

What causes sewer pipe failures?

Roots, Age and Improper Bedding

19

A Fernco Fitting is?

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

20

What chemicals may be used in sewer maintenance?

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

21

Sewer Maintenance Equipment May include?

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

22

Older Wastewater piping is generally replaced with?

Durable Polyethylene piping

23

Factors in the design of a sewer system include

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 )

24

How often should your sewer system be maintenance?

Once per year

25

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

Misuse, Faulty Engineering or Poor Construction

26

Name the types of breaks in sewer lines

Contraction or Shearing
Horizontal or Lateral Break
Cracking
Longitudinal

27

Confined Space Entry refers to?

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

28

What types records are normally kept?

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