BACKFLOW PREVENTION: KEY
CONCEPTS, TESTS, AND
REGULATIONS QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
1. A Double Check Backflow Prevention Assembly test and maintenance
report shall include all of the following information except the:
A) Address of the installation
B) Serial number of the assembly
C) Test results of check valve number one (1)
D) Test results of check valve number two (2)
E) Differential pressure relief valve discharge reading
Answer: E) Differential pressure relief valve discharge reading
The by-pass line of an approved backflow prevention assembly must contain
an approved assembly of equal:
A) Corrosion resistance
B) Flow capacity
C) Protection
D) Size
E) Temperature rating
Answer: C) Protection
An Atmospheric Type Vacuum Breaker shall not be subjected to water
pressure for periods longer than ______ hours:
A) Six (6)
B) Eight (8)
C) Twelve (12)
D) Twenty-four (24)
E) None of the above
Answer: C) Twelve (12)
,IT IS POSSIBLE FOR A PERFECT VACUUM AT SEA LEVEL TO RAISE
WATER IN A PIPE APPROXIMATELY _________ FEET.
A) TWENTY-FIVE (25)
B) THIRTY (30)
C) THIRTY-TWO (32)
D) THIRTY-FOUR (34)
E) THIRTY-SIX (36)
D)
What is the most desirable place to install a Backflow Prevention Device and/or
Assembly?
a) in a reinforced concrete pit
b) in an accessible location above ground
c) underground, with a minimum of twelve (12) inches of cover
d) at or above ceiling height, to protect it from vandalism
e) behind the boiler or equipment served, so it can be worked on when the
equipment is removed
b)
WHICH OF THE FOLLOWING CONDITIONS COULD RESULT IN WATER
CONTAMINATION THROUGH A CROSS-CONNECTION?
A) A VACUUM CREATED BY THE IMPROPER USE OF WATER HAMMER
ARRESTERS
B) THE USE OF SELF CLOSING LAVATORY FAUCETS
,C) TURNING OFF SERVICE TO A MULTI-STORY BUILDING AND
ALLOWING THE WATER SUPPLY TO DRAIN
D) A VACUUM CREATED BY THE USE OF QUICK CLOSING VALVES ON
THE LOWER FLOORS OF A BUILDING EXCEEDING TEN (10) FLOORS IN
HEIGHT
E) THE INSTALLATION OF WATER CONSERVING FIXTURES, INTO A
BUILDING DESIGNED PRIOR TO THEIR REQUIRED US
c
WHAT IS ANOTHER TERM THAT DESCRIBES WATER QUALITY AS A
HEALTH HAZARD RESULTING FROM BACKFLOW?
A) ISOLATION
B) CONTAMINATION
C) CROSS-CONNECTION
D) POLLUTION
E) CONTAINED
B
THE VENTURI EFFECT STATES THAT WHEN THE WATER VELOCITY
WITHIN THE PIPE INCREASES, THE PRESSURE:
A) WILL INCREASE PROPORTIONATELY
B) WILL REMAIN CONSTANT
C) COMPRESSES EXCESS VOLUMES OF WATER
D) DECREASES
E) CREATES BACKPRESSURE
, D
THE DEGREE OF HAZARD IS:
A) THE ACCEPTABLE TEMPERATURE RANGE OF A NON-POTABLE
WATER SOURCE
B) THE ANGLE OF THE BACKFLOW PREVENTER
C) BASED UPON THE QUALITY OF A NON POTABLE WATER SOURCE
D) DISTANCE BETWEEN THE CROSS-CONNECTION AND THE
BACKFLOW PREVENTER
E) THE ENGINEER'S SPECIFIED ELEVATION OF NON-POTABLE PIPING
C
BACKFLOW MAY BE DESCRIBED AS EITHER:
A) BACKPRESSURE OR BACKSIPHONAGE
B) CONTAMINATION OR POLLUTION
C) CONTAINMENT AND ISOLATION
D) DIRECT AND/OR INDIRECT
E) HIGH TEMPERATURE OR LOW TEMPERATURE
A
THE FEDERAL LAW PLACING RESPONSIBILITY FOR THE PROTECTION
OF THE PUBLIC WATER SUPPLY ON THE PURVEYOR OF WATER IS
THE:
CONCEPTS, TESTS, AND
REGULATIONS QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
1. A Double Check Backflow Prevention Assembly test and maintenance
report shall include all of the following information except the:
A) Address of the installation
B) Serial number of the assembly
C) Test results of check valve number one (1)
D) Test results of check valve number two (2)
E) Differential pressure relief valve discharge reading
Answer: E) Differential pressure relief valve discharge reading
The by-pass line of an approved backflow prevention assembly must contain
an approved assembly of equal:
A) Corrosion resistance
B) Flow capacity
C) Protection
D) Size
E) Temperature rating
Answer: C) Protection
An Atmospheric Type Vacuum Breaker shall not be subjected to water
pressure for periods longer than ______ hours:
A) Six (6)
B) Eight (8)
C) Twelve (12)
D) Twenty-four (24)
E) None of the above
Answer: C) Twelve (12)
,IT IS POSSIBLE FOR A PERFECT VACUUM AT SEA LEVEL TO RAISE
WATER IN A PIPE APPROXIMATELY _________ FEET.
A) TWENTY-FIVE (25)
B) THIRTY (30)
C) THIRTY-TWO (32)
D) THIRTY-FOUR (34)
E) THIRTY-SIX (36)
D)
What is the most desirable place to install a Backflow Prevention Device and/or
Assembly?
a) in a reinforced concrete pit
b) in an accessible location above ground
c) underground, with a minimum of twelve (12) inches of cover
d) at or above ceiling height, to protect it from vandalism
e) behind the boiler or equipment served, so it can be worked on when the
equipment is removed
b)
WHICH OF THE FOLLOWING CONDITIONS COULD RESULT IN WATER
CONTAMINATION THROUGH A CROSS-CONNECTION?
A) A VACUUM CREATED BY THE IMPROPER USE OF WATER HAMMER
ARRESTERS
B) THE USE OF SELF CLOSING LAVATORY FAUCETS
,C) TURNING OFF SERVICE TO A MULTI-STORY BUILDING AND
ALLOWING THE WATER SUPPLY TO DRAIN
D) A VACUUM CREATED BY THE USE OF QUICK CLOSING VALVES ON
THE LOWER FLOORS OF A BUILDING EXCEEDING TEN (10) FLOORS IN
HEIGHT
E) THE INSTALLATION OF WATER CONSERVING FIXTURES, INTO A
BUILDING DESIGNED PRIOR TO THEIR REQUIRED US
c
WHAT IS ANOTHER TERM THAT DESCRIBES WATER QUALITY AS A
HEALTH HAZARD RESULTING FROM BACKFLOW?
A) ISOLATION
B) CONTAMINATION
C) CROSS-CONNECTION
D) POLLUTION
E) CONTAINED
B
THE VENTURI EFFECT STATES THAT WHEN THE WATER VELOCITY
WITHIN THE PIPE INCREASES, THE PRESSURE:
A) WILL INCREASE PROPORTIONATELY
B) WILL REMAIN CONSTANT
C) COMPRESSES EXCESS VOLUMES OF WATER
D) DECREASES
E) CREATES BACKPRESSURE
, D
THE DEGREE OF HAZARD IS:
A) THE ACCEPTABLE TEMPERATURE RANGE OF A NON-POTABLE
WATER SOURCE
B) THE ANGLE OF THE BACKFLOW PREVENTER
C) BASED UPON THE QUALITY OF A NON POTABLE WATER SOURCE
D) DISTANCE BETWEEN THE CROSS-CONNECTION AND THE
BACKFLOW PREVENTER
E) THE ENGINEER'S SPECIFIED ELEVATION OF NON-POTABLE PIPING
C
BACKFLOW MAY BE DESCRIBED AS EITHER:
A) BACKPRESSURE OR BACKSIPHONAGE
B) CONTAMINATION OR POLLUTION
C) CONTAINMENT AND ISOLATION
D) DIRECT AND/OR INDIRECT
E) HIGH TEMPERATURE OR LOW TEMPERATURE
A
THE FEDERAL LAW PLACING RESPONSIBILITY FOR THE PROTECTION
OF THE PUBLIC WATER SUPPLY ON THE PURVEYOR OF WATER IS
THE:
