BACKFLOW PREVENTION ASSEMBLY TESTER PRACTICE EXAM WITH ACCURATE SOLUTIONS

BACKFLOW PREVENTION ASSEMBLY
TESTER PRACTICE EXAM




In responding to a backflow incident the water purveyor should

(A) Call the mayor
(B) Implement the emergency response plan
(C) Install a vacuum breaker
(D) Develop a good excuse - Correct Answers -Implement the emergency response
plan

A mixture of air and gas is considered hazardous when the mixture exceeds what
percentage of gthe lower explosive limit

(A) 0%
(B) 3%
(C) 7%
(D) 10% - Correct Answers -10%

To exert a pressure of 1.0 psi at base of a water column the column would have to be

(A) 4.34 high
(B) 14.7 high
(C) 27.75 high
(D) 33.89 high - Correct Answers -27.75 high

A DC must be tested

(A) Upon installation
(B) Every 6 month
(C) Annually on a health hazard
(D) none of the above - Correct Answers -Upon installation

An absolute perssure of 25 psiaa (at sea level) is equal to approximately

(A) 5 psi
(B) 10 psi

,(C) 20 psi
(D) 25 psi - Correct Answers -10 psi

Dueing a field test the air inlet on PVB must open at

(A) Above 2.0 psid
(B) Below 1.0 psid
(C) Above 1.0 psid
(D) Below 2.0 psid - Correct Answers -Above 1.0 psid

A differential pressuer gauge is used to field test

(A) PVB's
(B) Dual Checks
(C) AVB's
(D) All the above - Correct Answers -PVB's

Backflow in a water supply can be caused by

(A) Backpressure only
(B) A Barometric Loop
(C) Backsiphonage only
(D) Backpressure and Backsiphonage - Correct Answers -Backpressure and
Backsiphonage

A BPAT tester is required to report test information on the proper forms to the

(A) Administrative authority
(B) Manufacturer's Rep
(C) EPA
(D) None of the above - Correct Answers -Administrative authority

The relief valve opens when closing #2 shut off valve on a RP What is the most
probable cause

(A) #1 Shut off valve is open
(B) #2 Shut off valve is open
(C) #1 check is fouled open
(D) Shut off is leaking - Correct Answers -#1 check is fouled open

When field testing the #1 Check of a RP the differential pressurw shouid be

(A) Greter than or equal to 5.0 psid
(B) 3.0 psid greater than the relief valve opening point
(C) 1.0 psid in the directiom of flow
(D) Less than 5.0 psid - Correct Answers -Greter than or equal to 5.0 psid

, When testing a SVB what is the firsrt test being performed

(A) The air inlet opening point
(B) The static pressure across the check valve
(C) To verify the #2shut off hold tight
(D) To check if the SVB hold water - Correct Answers -The static pressure across the
check valve

When testing a PVB the air inlet opens upon closing the #1 shut off valve What is the
most probable cause

(A) Leaking #2 shut off valve
(B) Leaking #1 shut off valve
(C) Fouied air inlert
(D) Fouied check valve - Correct Answers -Leaking #2 shut off valve

A 2" AVB when used on irrigation systemsterm-15 shall be instilled

(A) 6" above all downstream piping
(B) 18" above all downstream piping
(C) 24" above all downstream piping
(D) 27 3/4" above all downstream piping - Correct Answers -6" above all downstream
piping

What causes the relief valief valve to close on a RPZ?

(A) Reilef valve spring pressure
(B) Supply side water pressure
(C) Pressure differential between Check #1 and Check #2
(D) All the above - Correct Answers -Supply side water pressure

When testing a RP instialled in vauil the relief valve opening point falls to zero What is
most probabie cause

(A) The relief valve is stuck shut
(B) #1 check is fouled
(C) the #2 shut off leaks by
(D) Installed improperly - Correct Answers -Installed improperly

When field testing the DC the #1 check static differential pressure is found to be 0.0
psid What is the most probable cause

(A) Fouied #2 Check
(B) Leaking #2 shut off
(C) Fouled #1 check