BACKFLOW PREVENTION ASSEMBLY

BACKFLOW PREVENTION ASSEMBLY

BPAT TESTER FINAL EXAM LATEST

ACTUAL EXAM QUESTIONS AND

CORRECT DETAILED ANSWERS

(VERIFIED ANSWERS)

1. Backflow is defined as:

• the pressure in the distribution piping of the potable water

supply

• the undesirable reversal of water, other liquids, gases or

substances in the distribution pipes of the potable water supply

• high pressure in the pipes of the water user
• excess pressure through a pressure regulator Correct Answer
• the undesirable reversal of water, other liquids, gases or

substances in the distribution pipes of the potable water supply

• Primary responsibility for cross connection control is vested in
• the water purveyor
• the water site supervisor
• the health department
• the State Health department Correct Answer a) the water

purveyor

• A reduced pressure principle backflow prevention assembly is

comprised of:

• two independently operating air inlet valves with a hydraulically

operating mechanically independent differential relief valve

• two check valves, two shut off valves and an air relief valve
• two independently acting approved check valves, a

hydraulically operated differential pressure relief valve, with four 1 / 4

appropriately located resilient seated test cocks and two resilient seated shut off valves

• two independently operated approved check valves,

mechanically operated air relief valve, four resilient seated test cocks between two resilient seated shut off valves Correct Answer c) two independently acting approved check valves, a hydraulically operated differential pressure relief valve, with four appropriately located resilient seated test cocks and two resilient seated shut off valves

• A local ordinance establishing a cross connection control

program must require that:

• the property owner test the assembly periodically
• a certified tester test the assembly at least once every twelve

months and report the test results to the water purveyor it a timely manner

• the water purveyor will install the necessary cross connection

control assembly

• pressure vacuum breaker will be installed at all service

connections Correct Answer b) a certified tester test the assembly at least once every twelve months and report the test results to the water purveyor it a timely manner

• The definition of an approved air gap used for backflow

prevention shall be:

• be equipped with a splash guard and a receiving funnel
• be not less than one inch from the side wall of the receiving

vessel

• be a vertical dimension of at least twice the diameter of the

supply pipe but not less than one inch above the receiving vessel

• be less that one inch above the flood rim of the receiving

vessel Correct Answer c) be a vertical dimension of at least twice the diameter of the supply pipe but not less than one inch above the receiving vessel

• / 4

• The correct installation of a reduced pressure principle

backflow prevention assembly is:

• it doesn't matter where the assembly is placed
• in a pit behind the water meter
• in a vented vault below the floodplain
• in an above grade, protected and accessible site Correct

Answer d) in an above grade, protected and accessible site

• If water is continuously flowing from the relief valve port of a

reduced pressure principle backflow prevention assembly the

tester may report:

• the relief valve is stuck closed
• the first check may be fouled, or the differential pressure relief

valve may have malfunctioned, or the second check is fouled with backpressure on the assembly

• the distribution line is subject to pressure surges
• the number two check valve has failed Correct Answer b) the

first check may be fouled, or the differential pressure relief valve may have malfunctioned, or the second check is fouled with backpressure on the assembly

8. Backpressure will cause backflow:

• through an unprotected over the rim feed to an open make-up

water tank

• through an unprotected over the rim gravity feed line to an

open wash tank

• through an unprotected feed to a closed make-up water tank
• through an unprotected feed to a cattle watering trough Correct

Answer c) through an unprotected feed to a closed make-up water tank

• In testing a reduced pressure principle backflow prevention

assembly:

• the relief valve must be tested first 3 / 4

• the apparent drop across the first check valve must be tested

first

• the second check must be tested first
• the flow rate must be tested first Correct Answer a) the relief

valve must be tested first

• A water purveyor or public health agency may require more

frequent testing of a backflow prevention assembly than the maximum time allowed between testing. What is the maximum

legal length of time permitted between tests:

• six months
• eighteen months
• twelve weeks
• twelve months Correct Answer d) twelve months

• Which of the following types of cross connections are

considered to be illegal?

• a by-pass hose with a shut off valve installed around a reduced

pressure principle backflow prevention assembly

• a supply line to a boiler from a domestic service equipped with

a reduced pressure principle backflow prevention assembly

• a service to a single family residence
• an air gapped service to a high rise building Correct Answer a)

a by-pass hose with a shut off valve installed around a reduced pressure principle backflow prevention assembly

12. Backsiphonage due to an aspirator effect maybe caused by:

• a sudden increase of the water supply
• high velocity flow of water through a tee in a piping system
• water from a high pressure pump against the number two

check valve of an approved double check valve assembly

• a hose equipped with an anti-siphon valve at the hose bib

being dropped into an open tank Correct Answer b) high velocity flow of water through a tee in a piping system

• / 4