Original Backflow Recertification
Questions and Correct Answers
If a backflow incident occurs which contaminates the public water supplier, the supplier of
water shall: - <CORRECT ANSWER >>report to the Department of Natural Resources within 48
hours
The anniversary date for testing backflow prevention assemblies is: - <CORRECT ANSWER >>the
date established by the supplier of water.
All backflow prevention assemblies acceptable for use in Missouri must be approved by: -
<CORRECT ANSWER >>the Foundation for Cross Connection Control and Hydraulic Research
(FCCCHR).
Back pressure is any pressure: - <CORRECT ANSWER >>greater than supply pressure
A Class II hazard premise may include equipment on the water system that: - <CORRECT
ANSWER >>is storing water for fire protection.
The springs on the two (2) check valves of a Reduced Pressure Principle Backflow Preventer
(ASSE 1013) are: - <CORRECT ANSWER >>not interchangeable.
An unprotected bypass around a backflow prevention assembly or device: - <CORRECT ANSWER
>>is considered to be a cross connection and never permitted.
To exert a pressure of one (1) psi at the base of a column of water, the column would have to
be___in height: - <CORRECT ANSWER >>27.75 inches
Test cock number one (1) of a Double Check Backflow Prevention Assembly (ASSE1015) is
located: - <CORRECT ANSWER >>upstream of shut off valve number one
, Backsiphonage: - <CORRECT ANSWER >>is a form of backflow
Before installing a backflow preventer assembly you should: - <CORRECT ANSWER >>flush the
line.
An absolute pressure of twenty five (25) psia (at sea level) is equal to approximately: -
<CORRECT ANSWER >>ten (10) psig
Any arrangement of pipes, fittings, fixtures, or devices that connects a non potable system to a
potable water system is called: - <CORRECT ANSWER >>Cross-Connection
Point of use backflow prevention is defined as: - <CORRECT ANSWER >>isolation.
During a test, valve leakage is indicated when the pressure on both sides of the valve being
tested: - <CORRECT ANSWER >>equalizes
Gauge pressure: - <CORRECT ANSWER >>pounds per square inch (psi) which are registered on a
gauge
What is the atmospheric pressure at sea level? - <CORRECT ANSWER >>14.7 PSI
The minimum pressure drop across each check valve of a Double Check Backflow Prevention
Assembly (ASSE 1015) in a static condition must be at least: - <CORRECT ANSWER >>1.0 psi
The weight of one (1) cubic foot of water at sea level is: - <CORRECT ANSWER >>62.4 pounds.
Which backflow prevention method should be used whenever possible? - <CORRECT ANSWER
>>Fixed Proper Air Gap
Questions and Correct Answers
If a backflow incident occurs which contaminates the public water supplier, the supplier of
water shall: - <CORRECT ANSWER >>report to the Department of Natural Resources within 48
hours
The anniversary date for testing backflow prevention assemblies is: - <CORRECT ANSWER >>the
date established by the supplier of water.
All backflow prevention assemblies acceptable for use in Missouri must be approved by: -
<CORRECT ANSWER >>the Foundation for Cross Connection Control and Hydraulic Research
(FCCCHR).
Back pressure is any pressure: - <CORRECT ANSWER >>greater than supply pressure
A Class II hazard premise may include equipment on the water system that: - <CORRECT
ANSWER >>is storing water for fire protection.
The springs on the two (2) check valves of a Reduced Pressure Principle Backflow Preventer
(ASSE 1013) are: - <CORRECT ANSWER >>not interchangeable.
An unprotected bypass around a backflow prevention assembly or device: - <CORRECT ANSWER
>>is considered to be a cross connection and never permitted.
To exert a pressure of one (1) psi at the base of a column of water, the column would have to
be___in height: - <CORRECT ANSWER >>27.75 inches
Test cock number one (1) of a Double Check Backflow Prevention Assembly (ASSE1015) is
located: - <CORRECT ANSWER >>upstream of shut off valve number one
, Backsiphonage: - <CORRECT ANSWER >>is a form of backflow
Before installing a backflow preventer assembly you should: - <CORRECT ANSWER >>flush the
line.
An absolute pressure of twenty five (25) psia (at sea level) is equal to approximately: -
<CORRECT ANSWER >>ten (10) psig
Any arrangement of pipes, fittings, fixtures, or devices that connects a non potable system to a
potable water system is called: - <CORRECT ANSWER >>Cross-Connection
Point of use backflow prevention is defined as: - <CORRECT ANSWER >>isolation.
During a test, valve leakage is indicated when the pressure on both sides of the valve being
tested: - <CORRECT ANSWER >>equalizes
Gauge pressure: - <CORRECT ANSWER >>pounds per square inch (psi) which are registered on a
gauge
What is the atmospheric pressure at sea level? - <CORRECT ANSWER >>14.7 PSI
The minimum pressure drop across each check valve of a Double Check Backflow Prevention
Assembly (ASSE 1015) in a static condition must be at least: - <CORRECT ANSWER >>1.0 psi
The weight of one (1) cubic foot of water at sea level is: - <CORRECT ANSWER >>62.4 pounds.
Which backflow prevention method should be used whenever possible? - <CORRECT ANSWER
>>Fixed Proper Air Gap
