WATER DISTRIBUTION GRADE 1
CERTIFICATION ADEQ PRACTICE
EXAM QUESTIONS AND CORRECT
ANSWERS
What is the general definition of an ion?
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An _________ with a positive or negative charge - ans-Atom
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A continuous positive pressure in a distribution system is essential for preventing what
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event? - ans-Backflow Event ws ws ws
_____________ water pressure must be maintained to ensure adequate customer serv
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ice during peak flow periods. However, minimum positive pressure must be maintained
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in mains to protect against backflow or backsiphonage from cross-connections. - ans-
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Minimum
Name the most common CAUSE for public water supply contamination. ____________
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_____ or cross-connection - ans-Backflow
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What does a backsiphonage condition usually cause?
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__________ pressure or negative pressure on the service or supply side. - ans-
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Reduced
What does a double check valve backflow assembly provide effective protection from?
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Both backpressure and backsiphonage of ____________. - ans-Pollution
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What is equipment that utilizes water for cooling, lubrication, washing or as a solvent al
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ways susceptible to? - ans-Cross-Connection
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What is the difference between a reduced pressure principle backflow device and a do
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uble check backflow device? The RP has a ______________. - ans-Relief Valve
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What is the maximum time period between having a backflow device tested by a certifi
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ed backflow tester? ______________ year. - ans-1
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, What is the regulatory definition of a cross-connection in a water supply?
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A physical connection between a public water system and any source of water or other
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substance that may lead to contamination of the water provided by the ____________
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_ through backflow. - ans-PWS
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What is the name of a type of valve that reduces the differential pressure across a clos
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ed disk making the main valve easier to open and close? - ans-Bypass Valve
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As soon as Cl2 gas enters the throat area, a victim will sense a sudden stricture in this
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area-
Nature's way of signaling to prevent passage of the gas to the lungs. At this point, the v
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ictim must attempt to do two things: get out of the area of the leak, proceeding upwind,
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and to take only very short breaths through the mouth. Normal breathing will cause ___
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_______, which must be prevented if possible. - ans-Coughing
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Chlorine gas causes suffocation, constriction of the chest, tightness in the throat, and e
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dema of the ______________. - ans-Lungs
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_______________ available chlorine is very effective in killing bacteria. - ans-Free ws ws ws ws ws ws ws ws ws ws
How should an operator store an empty chlorine cylinder?
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____________, tagged as empty. - ans-Upright
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If a chlorine leak occurs, where will chlorine gas accumulate?
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Near the ____________ of the tank. - ans-Bottom
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What effect does chlorine gas have on the sense of smell?
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It produces olfactory _______________. - ans-Fatigue
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What is the primary safety concern when using chlorine gas as opposed to calcium hyp
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ochlorite or sodium hypochlorite? The potential for a _____________ leak. - ans-Gas
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What may occur due to chronic exposure to low concentrations of chlorine gas?
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Chronic exposure may cause corrosion of the _____________. - ans-Teeth
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What is the process called that changes water vapor to tiny droplets or ice crystals? -
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ans-Condensation
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What is the unit of measurement for sound? - ans-Decibels
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What happens if grease comes in contact with the winding of a motor? - ans-
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The winding insulation my deteriorate.
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What is the most common type of valve used in isolating a small or medium sized secti
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on of a distribution system? - ans-Gate
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CERTIFICATION ADEQ PRACTICE
EXAM QUESTIONS AND CORRECT
ANSWERS
What is the general definition of an ion?
ws ws ws ws ws ws ws
An _________ with a positive or negative charge - ans-Atom
ws ws ws ws ws ws ws ws ws ws
A continuous positive pressure in a distribution system is essential for preventing what
ws ws ws ws ws ws ws ws ws ws ws ws ws
event? - ans-Backflow Event ws ws ws
_____________ water pressure must be maintained to ensure adequate customer serv
ws ws ws ws ws ws ws ws ws ws
ice during peak flow periods. However, minimum positive pressure must be maintained
ws ws ws ws ws ws ws ws ws ws ws ws
in mains to protect against backflow or backsiphonage from cross-connections. - ans-
ws ws ws ws ws ws ws ws ws ws ws
Minimum
Name the most common CAUSE for public water supply contamination. ____________
ws ws ws ws ws ws ws ws ws ws
_____ or cross-connection - ans-Backflow
ws ws ws ws
What does a backsiphonage condition usually cause?
ws ws ws ws ws ws
__________ pressure or negative pressure on the service or supply side. - ans-
ws ws ws ws ws ws ws ws ws ws ws ws ws
Reduced
What does a double check valve backflow assembly provide effective protection from?
ws ws ws ws ws ws ws ws ws ws ws
Both backpressure and backsiphonage of ____________. - ans-Pollution
ws ws ws ws ws ws ws ws
What is equipment that utilizes water for cooling, lubrication, washing or as a solvent al
ws ws ws ws ws ws ws ws ws ws ws ws ws ws
ways susceptible to? - ans-Cross-Connection
ws ws ws ws
What is the difference between a reduced pressure principle backflow device and a do
ws ws ws ws ws ws ws ws ws ws ws ws ws
uble check backflow device? The RP has a ______________. - ans-Relief Valve
ws ws ws ws ws ws ws ws ws ws ws
What is the maximum time period between having a backflow device tested by a certifi
ws ws ws ws ws ws ws ws ws ws ws ws ws ws
ed backflow tester? ______________ year. - ans-1
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, What is the regulatory definition of a cross-connection in a water supply?
ws ws ws ws ws ws ws ws ws ws ws
A physical connection between a public water system and any source of water or other
ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws
substance that may lead to contamination of the water provided by the ____________
ws ws ws ws ws ws ws ws ws ws ws ws ws
_ through backflow. - ans-PWS
ws ws ws ws
What is the name of a type of valve that reduces the differential pressure across a clos
ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws
ed disk making the main valve easier to open and close? - ans-Bypass Valve
ws ws ws ws ws ws ws ws ws ws ws ws ws
As soon as Cl2 gas enters the throat area, a victim will sense a sudden stricture in this
ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws
area-
Nature's way of signaling to prevent passage of the gas to the lungs. At this point, the v
ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws
ictim must attempt to do two things: get out of the area of the leak, proceeding upwind,
ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws
and to take only very short breaths through the mouth. Normal breathing will cause ___
ws ws ws ws ws ws ws ws ws ws ws ws ws ws
_______, which must be prevented if possible. - ans-Coughing
ws ws ws ws ws ws ws ws
Chlorine gas causes suffocation, constriction of the chest, tightness in the throat, and e
ws ws ws ws ws ws ws ws ws ws ws ws ws
dema of the ______________. - ans-Lungs
ws ws ws ws ws
_______________ available chlorine is very effective in killing bacteria. - ans-Free ws ws ws ws ws ws ws ws ws ws
How should an operator store an empty chlorine cylinder?
ws ws ws ws ws ws ws ws
____________, tagged as empty. - ans-Upright
ws ws ws ws ws ws
If a chlorine leak occurs, where will chlorine gas accumulate?
ws ws ws ws ws ws ws ws ws
Near the ____________ of the tank. - ans-Bottom
ws ws ws ws ws ws ws ws
What effect does chlorine gas have on the sense of smell?
ws ws ws ws ws ws ws ws ws ws
It produces olfactory _______________. - ans-Fatigue
ws ws ws ws ws ws
What is the primary safety concern when using chlorine gas as opposed to calcium hyp
ws ws ws ws ws ws ws ws ws ws ws ws ws ws
ochlorite or sodium hypochlorite? The potential for a _____________ leak. - ans-Gas
ws ws ws ws ws ws ws ws ws ws ws
What may occur due to chronic exposure to low concentrations of chlorine gas?
ws ws ws ws ws ws ws ws ws ws ws ws
Chronic exposure may cause corrosion of the _____________. - ans-Teeth
ws ws ws ws ws ws ws ws ws ws
What is the process called that changes water vapor to tiny droplets or ice crystals? -
ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws
ans-Condensation
ws
What is the unit of measurement for sound? - ans-Decibels
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What happens if grease comes in contact with the winding of a motor? - ans-
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The winding insulation my deteriorate.
ws ws ws ws
What is the most common type of valve used in isolating a small or medium sized secti
ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws ws
on of a distribution system? - ans-Gate
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