WATER LEVEL 3 QUESTIONS WITH COMPLETE
SOLUTIONS
When should a pipe fitting be anchored?
When flow changes direction or stops
Operating valves to fast may cause?
Water hammer
What size does the main need to be for a fire hydrant?
6"
Why should dead ends be avoided?
To prevent poor taste , quality, or odor
Primary use of the transmission water main?
Deliver water
Why is positive pressure to be maintained at all times?
Meet customer needs and prevent cross contamination/backflow
Pressure head is defined as?
Vertical distance in feet equal to pressure at a specific point
When a water facility is contaminated?
Take it out of service immediately
What are the primary drinking water regulations?
List of contaminates and MCL's
, Where should water samples be drawn from?
Points though out the system
Spaces that require having a permit upon entering and exiting
are called?
Confined spaces
When digging a trench less than 5' how far should spoil be
placed?
2'
Blowoff valves should be used for?
Blow off sediment on the bottom of pipe
Chlorine gases are?
Heavier than air and stay at the bottom
Free chlorine residual?
0.2
Accountable water loss in system can be determined by?
Water auditing
How often should a valve box be inspected?
Once a year
What factor will not affect leakages in water distribution?
Meter
Method for repairing a joint leak?
Clamps
SOLUTIONS
When should a pipe fitting be anchored?
When flow changes direction or stops
Operating valves to fast may cause?
Water hammer
What size does the main need to be for a fire hydrant?
6"
Why should dead ends be avoided?
To prevent poor taste , quality, or odor
Primary use of the transmission water main?
Deliver water
Why is positive pressure to be maintained at all times?
Meet customer needs and prevent cross contamination/backflow
Pressure head is defined as?
Vertical distance in feet equal to pressure at a specific point
When a water facility is contaminated?
Take it out of service immediately
What are the primary drinking water regulations?
List of contaminates and MCL's
, Where should water samples be drawn from?
Points though out the system
Spaces that require having a permit upon entering and exiting
are called?
Confined spaces
When digging a trench less than 5' how far should spoil be
placed?
2'
Blowoff valves should be used for?
Blow off sediment on the bottom of pipe
Chlorine gases are?
Heavier than air and stay at the bottom
Free chlorine residual?
0.2
Accountable water loss in system can be determined by?
Water auditing
How often should a valve box be inspected?
Once a year
What factor will not affect leakages in water distribution?
Meter
Method for repairing a joint leak?
Clamps
