BACKFLOW PREVENTION ASSEMBLY
TESTER TRAINING TEST BANK PRACTICE
QUESTIONS SOLUTIONS DETAILED
EXPLANATIONS VERIFIED
●● Who Can Approve Backflow Prevention Assemblies
Answer: The Foundation for Cross-Connection Control and Hydraulic
Research at The University of Southern California
●● Define Atmospheric Pressure
Answer: The Pressure exerted by the weight of the atmosphere.
●● As the elevation above see level increases the atmospheric
pressure....
Answer: Decreases
●● What is the weight of the atmosphere at sea level
Answer: 14.7 PSI
●● Atmospheric Vacuum Breaker (AVB) Prevents
Answer: Backsiphonage
,●● Define Backflow
Answer: A reverse flow condition, created by a difference in water
pressure, which causes water to flow back into the distribution pipes of a
potable water supply from any source or sources other than an intended
source.
●● Backflow can occur under what two conditions
Answer: Backsiphonage and backpressure conditions
●● Backflow Prevention Assembly
Answer: Any mechanical assembly, method, or means that would
prohibit the backflow of water or any other substance into the potable
water supply.
●● Define Backpressure
Answer: A condition in which the pressure in the downstream plumbing
system is greater then the supply pressure in the potable distribution
system.
●● Backsiphonage
Answer: The reversal of flow within a system that is caused by negative
pressure in the supply piping.
●● How high is a Barometric Loop?
, Answer: 35FT in height
●● In a total vacuum will not rise higher then?
Answer: 33.9 Feet at sea level
●● Define Closed System
Answer: Prevents any water that has passed through the line from
backflowing and re-entering the potable water system
●● Define Containment (Policy)
Answer: To confine potential contamination caused by a cross-
connection within the facility where it arises by installing a backflow
prevention assembly at the meter or service connection when no meter is
used.
●● Continuous Pressure
Answer: Water used for 12 hours or more within a 24 hour period.
●● Define Critical line level
Answer: a reference line representing the level of the check valve seat
within a backsiphonage control unit. it is used to establish the Hight of
the unit above the highest outlet or flood level rim.
●● Define Cross-Connection
TESTER TRAINING TEST BANK PRACTICE
QUESTIONS SOLUTIONS DETAILED
EXPLANATIONS VERIFIED
●● Who Can Approve Backflow Prevention Assemblies
Answer: The Foundation for Cross-Connection Control and Hydraulic
Research at The University of Southern California
●● Define Atmospheric Pressure
Answer: The Pressure exerted by the weight of the atmosphere.
●● As the elevation above see level increases the atmospheric
pressure....
Answer: Decreases
●● What is the weight of the atmosphere at sea level
Answer: 14.7 PSI
●● Atmospheric Vacuum Breaker (AVB) Prevents
Answer: Backsiphonage
,●● Define Backflow
Answer: A reverse flow condition, created by a difference in water
pressure, which causes water to flow back into the distribution pipes of a
potable water supply from any source or sources other than an intended
source.
●● Backflow can occur under what two conditions
Answer: Backsiphonage and backpressure conditions
●● Backflow Prevention Assembly
Answer: Any mechanical assembly, method, or means that would
prohibit the backflow of water or any other substance into the potable
water supply.
●● Define Backpressure
Answer: A condition in which the pressure in the downstream plumbing
system is greater then the supply pressure in the potable distribution
system.
●● Backsiphonage
Answer: The reversal of flow within a system that is caused by negative
pressure in the supply piping.
●● How high is a Barometric Loop?
, Answer: 35FT in height
●● In a total vacuum will not rise higher then?
Answer: 33.9 Feet at sea level
●● Define Closed System
Answer: Prevents any water that has passed through the line from
backflowing and re-entering the potable water system
●● Define Containment (Policy)
Answer: To confine potential contamination caused by a cross-
connection within the facility where it arises by installing a backflow
prevention assembly at the meter or service connection when no meter is
used.
●● Continuous Pressure
Answer: Water used for 12 hours or more within a 24 hour period.
●● Define Critical line level
Answer: a reference line representing the level of the check valve seat
within a backsiphonage control unit. it is used to establish the Hight of
the unit above the highest outlet or flood level rim.
●● Define Cross-Connection
