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Backflow Prevention Assembly Tester Training: Questions and Answers, Exams of Social Sciences

United States International UniversitySocial Sciences

A comprehensive set of questions and answers related to backflow prevention assembly tester training. It covers various aspects of backflow prevention, including definitions, types of devices, testing procedures, and troubleshooting. Valuable for individuals seeking to understand the principles and practices of backflow prevention.

Typology: Exams

2024/2025

Available from 03/09/2025

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BACKFLOW PREVENTION ASSEMBLY TESTER
TRAINING – GA
What is an actual cross connection? - Answers :Any arrangement of pipes, fittings, or
devices that connects a potable water supply directly to a non-potable source at all
times
What is an Air Gap? - Answers :The unobstructed vertical distance through the free
atmosphere between the lowest opening from any pipe or outlet supplying water to a
tank, plumbing fixture, or other container, and the overflow rim of that container
What does AVB stand for? - Answers :Atmospheric Vacuum Breaker
What is an Atmospheric Vacuum Breaker? - Answers :A mechanical device consisting
of a float check valve and an air-inlet port designed to prevent backsiphonage
What is an auxiliary supply? - Answers :Any water source or system, other than the
potable water supply, that may be available in the building or premises
What is the purpose of a check valve? - Answers :To allow flow in only one direction
What is a cross connection? - Answers :Any arrangement of pipes, fittings, fixtures, or
devices that connects a non-potable system to a potable water system
What does DCVA stand for? - Answers :Double Check Valve Assembly
What is a DCVA? - Answers :A testable mechanical device consisting of two
independently operating, spring-loaded check valves
What is feed water? - Answers :Water that is added to a commercial or industrial
system and is subsequently used by the system, such as water that is fed to a boiler to
produce steam
What is an incubation period for a disease? - Answers :The time period that elapses
between the time a person is exposed to some disease and the time that person shows
the first sign or symptom of the disease
What is an overflow level? - Answers :The maximum height that water or liquid will rise
in a receptacle before it flows over the rim
What is a potable water source? - Answers :Water that is biologically, chemically, and
radiologically safe to drink
What is a potential cross connection? - Answers :Any arrangement of pipes, fittings, or
devices that indirectly connects a potable water supply to a non-potable water source
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Download Backflow Prevention Assembly Tester Training: Questions and Answers and more Exams Social Sciences in PDF only on Docsity!

BACKFLOW PREVENTION ASSEMBLY TESTER

TRAINING – GA

What is an actual cross connection? - Answers :Any arrangement of pipes, fittings, or devices that connects a potable water supply directly to a non-potable source at all times What is an Air Gap? - Answers :The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or outlet supplying water to a tank, plumbing fixture, or other container, and the overflow rim of that container What does AVB stand for? - Answers :Atmospheric Vacuum Breaker What is an Atmospheric Vacuum Breaker? - Answers :A mechanical device consisting of a float check valve and an air-inlet port designed to prevent backsiphonage What is an auxiliary supply? - Answers :Any water source or system, other than the potable water supply, that may be available in the building or premises What is the purpose of a check valve? - Answers :To allow flow in only one direction What is a cross connection? - Answers :Any arrangement of pipes, fittings, fixtures, or devices that connects a non-potable system to a potable water system What does DCVA stand for? - Answers :Double Check Valve Assembly What is a DCVA? - Answers :A testable mechanical device consisting of two independently operating, spring-loaded check valves What is feed water? - Answers :Water that is added to a commercial or industrial system and is subsequently used by the system, such as water that is fed to a boiler to produce steam What is an incubation period for a disease? - Answers :The time period that elapses between the time a person is exposed to some disease and the time that person shows the first sign or symptom of the disease What is an overflow level? - Answers :The maximum height that water or liquid will rise in a receptacle before it flows over the rim What is a potable water source? - Answers :Water that is biologically, chemically, and radiologically safe to drink What is a potential cross connection? - Answers :Any arrangement of pipes, fittings, or devices that indirectly connects a potable water supply to a non-potable water source

What does PVB stand for? - Answers :Pressure Vacuum Breaker What is a PVB? - Answers :A device designed to prevent backsiphonage, consisting of once independently operating spring-loaded check valve and an independently operating spring-loaded air-inlet valve What does RPBP stand for? - Answers :Reduced Pressure Backflow Preventer What does RPZBP stand for? - Answers :Reduced Pressure Zone Backflow Preventer What is backflow? - Answers :A hydraulic condition, caused by difference in pressures, in which non-potable water or other fluids flow into a potable water system What is backpressure? - Answers :A backflow condition in which a pump, elevated tank, boiler, 0r other means results in a downstream pressure greater than the supply pressure What is backsiphange? - Answers :A backflow condition in which the pressure in the distribution system is less than atmospheric pressure (sub-atmospheric) What is a bypass? - Answers :In cross-connection control, any pipe arrangement that passes water around a protective device, casing it to be ineffective What is a carrier? - Answers :A human or animal that carries disease germs and can pass them to another person or animal without getting the disease itself What is an RP? - Answers :A mechanical device consisting of two independently operating, spring-loaded check valves with a reduced pressure zone between the check valves Containment - Answers :Protection on the service line - protects the potable water supply and not the customer Isolation - Answers :Protection on individual sources of hazard - provides internal protection Does GA law require containment or isolation? - Answers :Containment Organism that causes salmonellosis - Answers :Salmonella Symptom(s) of salmonellosis - Answers :Acute diarrhea and vomiting Organism that causes bacillary dysentery - Answers :Shigella Symptom(s) of bacillary dysentery - Answers :Diarrhea

Where are dual checks commonly installed? - Answers :Residential What is the aspirator effect? - Answers :Fluids are pulled (siphoned) into a pipe due to the difference in pressure and velocity of the fluid at the union of the two pipes As velocity increases, pressure _______ - Answers :Decreases Venturi - Answers :Device that is specifically designed to create a low pressure region in order to measure velocity or create a suction Direct cross connections are subject to ______ and _______ - Answers :Backpressure and backsiphonage Indirect cross connections are subject to ______ only - Answers :Backsiphonage The purest and truest form of backflow prevention - Answers :Air gap Distance of a proper air gap - Answers :2 times the diameter of the pipe, no less than 1 inch Air gaps are approved to protect against: - Answers :Backsiphonage, backpressure, contaminants and pollutants RP's are approved to protect against: - Answers :Backsiphonage, backpressure, contaminants and pollutants One limitation of a DC assembly - Answers :Does not give any indication of failure unless tested DC's are approved to protect against: - Answers :Backsiphonage, backpressure, pollutants Where should a strainer be installed relative to a backflow prevention device? - Answers :Upstream of shut off valve # What kind of protection does a bypass line require? - Answers :Same level of protection as the main line (does not have to be the same manufacturer) USC recommendation for installing RP's and DC's - Answers :Minimum of 12 inches above grade, maximum of 36 inches above grade PVB's are approved to protect against: - Answers :Backsiphonage, pollutants and contaminants PVB's must be installed _____ inches above the highest downstream point - Answers :12 inches

AVB's are approved to protect against: - Answers :Backsiphonage, contaminants, and pollutants AVB's must be installed ____ inches above the highest downstream point - Answers : inches Are AVB'S approved for continuous use? - Answers :No - no more than 12 hours in a 24 hour period What does SVB stand for? - Answers :Spill Proof Vacuum Breaker What does HVB stand for? - Answers :Hose Type Vacuum Breaker (non-testable) Can thermal expansion cause backpressure? - Answers :Yes Test kit gage faces read what PSID range? - Answers :0- 15 PSID What color is the high pressure hose? - Answers :Red What color is the low pressure hose? - Answers :Traditionally green but new kits are blue What color is the bypass/vent hose? - Answers :Traditionally black but new kits are yellow How often do test kits have to be calibrated? - Answers :Minimum annually The relief valve on a RP must open at a minimum PSID of _____ - Answers :2.0 PSID Check valve #1 on a RP should hold a minimum PSID of _____ - Answers :Relief valve

  • 3.0 PSID Check valve #2 on a RP should hold against backpressure and a minimum PSID of _____ - Answers :1.0 PSID RPDA and DCDA detect what? - Answers :Low flows on lines that should not have flow indicating illegal taps or leaks Why do we flush test cocks in the order "4, 3, 2, 1" on a RP? - Answers :To prevent it from dumping The RV on a RP drips steadily while the customer is not using water. You close the shutoff valve #2 and the dripping stops. What does that indicate? - Answers :You have a leaking check valve #2 under a backpressure condition

True or False: Fluctuating line pressure can cause a RP to "spit" or discharge intermittently - Answers :True The check valve on a SVB must close at a minimum of _____ PSID - Answers :1. PSID The air inlet valve on a SVB must open at a minimum of _____ PSID - Answers :1. PSID Is an AVB a testable device? - Answers :No True or False: A bypass line around a backflow assembly is permitted as long as it is protected with the same level of protection - Answers :True How many check valves are in a RP? - Answers : How many test cocks are on a RP? - Answers : How many check valves are in a DC? - Answers : How many test cocks are on a DC? - Answers : How many check valves are in a PVB? - Answers : How many air inlet valves are in a PVB? - Answers : How many test cocks are on a PVB? - Answers : How many check valves are in a SVB? - Answers : How many air inlet valves are in a SVB? - Answers : How many test cocks are on a SVB? - Answers : If the air inlet valve on a SVB is open when loosening the vent valve, what is leaking? - Answers :The check valve Why might the high side bleed needle valve need to be opened more than 1/4 of a turn while testing the air inlet valve on a SVB? - Answers :Leaking shut off # Why might the low side control valve need to be opened more than 1/4 of a turn when testing the RV opening point on a RP? - Answers :Leaking shut off #2 with water use downstream

When testing for the PSID across check valve #2 on a DC assembly, water continues to flow from the sight tube on test cock #4. What does that indicate (assuming nothing unusual was found while testing check valve #1)? - Answers :Shut off #2 is leaking with backpressure from the system The shut off valves and test cocks on approved backflow prevention assemblies are required to be - Answers :Resilient seated While testing the air inlet opening point on a PVB, the air inlet does not open and the gage drops to 0. What does this indicate? - Answers :Shutoff valve #2 is leaking While testing the air inlet opening point on a PVB, the air inlet does not open and the gage does not drop to the air inlet opening point. What does this indicate? - Answers :Shutoff valve #1 is leaking While testing the check valve closing point on a PVB water continues to flow out of test cock #2. What does this indicate? - Answers :Shutoff valve #1 is leaking