Back Flow Test Questions and Answers 100% Pass

Back Flow Test Questions and Answers 100% Pass The unintentional reversal of flow in a potable water system which may result in contamination or pollution of the system. A. cross connection B. backflow C. backpress ...

Back Flow Test Questions and Answers 100% Pass The unintentional reversal of flow in a potable water system which may result in contamination or pollution of the system. A. cross connection B. backflow C. backpressure backgflow D. backsiphonage backflow ✔✔B. Backflow A device installed in the potable water supply to a system that contains a pullutant or contaminant to prevent backflow into the potable water system within the facility A. backflow B. backflow prevention device C. backflow pressure backflow D. isolation backflow device ✔✔D. isolation backflow device A connection made to the potable water system whereby the risk from backflow occuring would be limited to the pollution of the potable water with objectionable but nontoxic substances. A. health hazard (low) B. health hazard (High) C. pollution D. contamination ✔✔A. Health Hazard (Low) Any device, method, or construction used to prevent the backward flow of liquids, solids, or gases into potable distribution system. A. backflow prevention device B. air gap C. isolution backflow device D. backsiphonage backflow ✔✔A. backflow prevention device A mechanical device consisting of a float check valve and an air inlet port designed to prevent backsiphonage A. back flow B. pollution C. air gap D. atmospheric vacuum breaker ✔✔D. atmospheric vacuum breaker The reversal of normal flow in a system caused by a negative pressure (vacuum or partial vacuum) in the supply piping. A. atmostpheric vacuum breaker B. backflow C. backsiphonage backflow D. backpressure backflow ✔✔C. backsiphonage backflow Does not constitute an actual health hazard although the quality of the water is impaired with respect to taste, odor, or utility. A. health hazard (high) B. pulution C. degree of hazard D. toxic substance ✔✔B. pollution Any liquid, solid, or gas, which when introduced into the water supply, creates, or may create, a danger to the health and well being of the consumer. A. contamination B. Health hazard (high) C. health hazard (low) D. toxic substance ✔✔D. toxic substance A determination on whether the substance in the nonpotable system is toxic or nontoxic A. degree of hazard B. health hazard (high) C. health hazard (low) D. toxic substance ✔✔A. degree of hazard The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or outlet supplying water to a tank, and plumbing fixture. A. air gap B. submerged inlet C. backflow D. cross connection ✔✔A. air gap An arrangement of pipes, fittings, or devices that introduces potable water into a nonpotable system below the flood level rim of a receptacle A. inlet B. outlet C. submerged inlet D. submerged outlet ✔✔C. submerged inlet Does constitute an actual health hazard, the consumer being subjected to potentially lethal waterborne disease or illness A. degree of hazard B. contamination C. pollution D. toxic substance ✔✔B. contamination Any arrangement of pipes, fittings, fixtures, or devices that connects a nonpotable system to a potable water system. A. cross connection B. criss siphonage C. backflow D. degree of hazard ✔✔A. cross connection The reversal of normal flow in a system due to an increase in the downstream pressure above that of the supply pressure. A. backpressure backflow B. backsiphonage backflow C. backflow D. backflow ✔✔A. backpressure backflow An actual or potential threat of contamination of a physical or toxic nature to the potable water system to such a degree that there would be a danger to health. A. health hazard (high) B. health hazard (low) C. pollution D. contamination ✔✔A. health hazard (high) Anti-siphon type water closer flush tank ballcock: A. 1002 B. 1003 C. 1001 D. 1011 ✔✔A. 1002 Reduce pressure principle backflow preventer A. 1024 B. 1015 C. 1014 D. 1013 ✔✔D. 1013 Reduce pressure detector assembly backflow preventer A. 1048 B. 1047 C. 1052 D. 1056 ✔✔B. 1047 Double check backflow prevention assembly A. 1013 B. 1048 C. 1024 D. 1015 ✔✔D. 1015 Double check detector assembly backflow preventer: A. 1056 B. 1052 C. 1048 D. 1047 ✔✔C. 1048 Dual check valve type backflow preventer: A. 1012 B. 1024 C. 1035 D. 1025 ✔✔B. 1024 Backflow preventer with intermediate atmospheric vent A. 1020 B. 1013 C. 1019 D. 1012 ✔✔D. 1012 Dual check valve type backflow preventer (carbonated beverage) A. 1032 B. 1048 C. 1035 D. 1056 ✔✔A. 1032 Pipe applied atmospheric type vacuum breaker: A. 1019 B. 1001 C. 1011 D. 1002 ✔✔B. 1001 Pressure vacuum breaker assembly: A. 1020 B. 1024 C. 1015 D. 1012 ✔✔A. 1020 Hose connection vacuum breaker: A. 1102 B. 1012 C. 1011 D. 1101 ✔✔C. 1011 Vacuum breaker wall hydrants, frost resistance, automatic draining type: A. 1024 B. 1032 C. 1018 D. 1019 ✔✔D. 1019 Laborator Faucet vacuum breaker: A. 1031 B. 1032 C. 1035 D. 1034 ✔✔C. 1035 Hose connection backflow preventer: A. 1052 B. 1056 C. 1048 D. 1047 ✔✔A. 1052 Back siphonage vacuum breaker: A. 1052 B. 1056 C. 1048 D. 1047 ✔✔B. 1056 True or False: A reduced pressure principle backflow assembly, when outside of the building should be in a pit to prevent freezing. ✔✔False True or False: Both shutoff valves must be closed tightly when testing a reduced pressure principle backflow assembly ✔✔False True or False: An occasional discharge discharge of water from the relief valve of a reduced pressure principle backflow assembly ✔✔True True or False: A by-pass arrangement or jumper around a backflow preventer is considered to be a cross connection ✔✔True True or False: Shutoff valve #2 must be closed tightly when testing a double check valve backflow assembly ✔✔True True or False: Dual check valve type backflow preventers are approved for protection against pollution of the potable water system. ✔✔True True or False: The amount of pressure loss across a reduced pressure principle assembly is the same as that of a double check valve assembly. ✔✔False True or False: The proper type of backflow protection for a closed loop piping system containing ethylene glycol is a reduced pressure principle backflow assembly. ✔✔False True or False: An atmospheric type vacuum breaker is approved for high hazard cross connections subject to back siphonage. ✔✔True True or False: A properly engineered air gap separation would be a minimum of two times the diameter of the supply pipe above the LEVEL OF THE LIQUID ✔✔False True or False: The relief valve of a reduced pressure principle backflow assembly must open to the atmosphere when the pressure differential across the first check valve is three pounds per square inch or less. ✔✔False True or False: A solid waste connection is not permitted on the relief valve of a reduced pressure principle backflow assembly ✔✔False True or False: A laboratory vacuum breaker is approved for high and low hazard backflow protection ✔✔False True or False: A backflow preventer with an intermediate atmospheric vent is approved for protection against both back pressure and back siphonage. ✔✔True True or False: An atmospheric type vacuum breaker may be used for low hazard cross connections subject to back pressure only. ✔✔False True or False: A pressure vacuum breaker assembly may not be used for high hazard backflow protection. ✔✔False True or False: A constant discharge of water from the relief valve of a reduced pressure principle backflow assembly indicates a malfunction within the device ✔✔True True or False: In accordance with Ohio Plumbing code a backflow preventer with an intermediate atmospheric vent is approved for commercial boilers, provided, no chemicals are used. ✔✔False True or False: Because of no visible indication of failure, a double check valve backflow assembly is not approved for high hazard cross connections ✔✔True True or False: A pressure vacuum breaker assembly is approved for protection against back pressure and back siphonage backflow ✔✔False The type of protection provided by a barometric loop is: A. an atmospheric break B. preventing loss of prime on a pump C. preventing back pressure backflow D. preventing back siphonage backflow E. preventing service connection contamination ✔✔D. preventing back siphonage backflow All vacuum breakers are designed to: A. prevent back pressure backflow B. prevent back siphonage C. prevent atmosphere from entering the downstream system D. induce a siphon E. induce back pressure ✔✔B. Prevent back siphonage All backflow preventer check valves must be drip tight when the: A. when the supply pressure drops below 8 p.s.i B. positive differential is less than 2 p.s.i C. tester creates a venturi during the test D. device is subjected to any backflow E. inlet shut off valve is closed before the outlet valve ✔✔D. device is subjected to any backflow A leak in the underground water distribution piping may: A. allow the contamination of the system from backflow B. be the result of a fouled backflow preventer C. increase the system pressure at the point of the leak D. not be considered a cross contamination ✔✔A. allow the contamination of the system from backflow Backflow may be described as either: A. back pressure or back siphonage B. contamination or pollution C. high or low hazard D. containment or isolation E. zone or supply pressure ✔✔A. back pressure of back siphonage The term that described water quality as a health hazard as a result of backflow is: A. back pressure B. contamination C. cross connection D. pulltuion E. system hazard ✔✔B. contamination Back siphonage in the water distribution system may be caused by: A. an elevated storage tank B. low seasonal demand C. ruptured piping D. pressure reducing valves E. a piping restriction due to corrosion ✔✔C. reptured piping Backflow protection provided by a barometric loop is primarily: A. low hazard only- back siphonage B. high hazard- back pressure and back siphonage C. low hazard- back pressur eonly D. high hazard- back pressure only E. low or high hazard- back siphonage ✔✔E. low or high hazard- back siphonage The type of protection required for a non-chemical fire sprinkler system is a(n): A. air gap separation B. reduced pressure principle assembly C. double check detector assembly D. pressure vacuum breaker assembly E. reduced pressure principle detector assembly ✔✔C. double check detector assembly The type of protection required for a solar heating system containing ethylene glycol is a(n): A. air gap separation B. atmospheric type vacuum breaker C. reduced pressure principle assembly D. pressure vacuum breaker assembly E. double check valve assembly ✔✔A. air gap separation Type of protection required for the potable water system in a waste water treatment plant where the system is used for pump seal water is a(n): A. reduced pressure principle assembly B. atmospheric type vacuum breaker C. double check valve assembly D. pressure vacuum breaker assembly E. air gap separation ✔✔E. air gap separation No underground pit or vault should be entered before the: A. water supply has been shut off B. atmosphere has been tested C. flow rate has been determinded D. water utility has been notified E. the test form is filled out ✔✔B. atmosphere has been tested The most important step after testing a backflow assembly is: A. recording the test results B. removing the gauge hoses C. removing the test cock adapters D. returning the assembly to normal operating mode E. signing the test form ✔✔D. returning the assembly to normal operating mode When testing a backflow prevention assmebly, the critical first step is to: A. flush the test cocks of dirt and debris B. install the test cock adapters C. inform the occupants the water will be turned off D. flush the air from the test equipment E. close the downstream test cocks ✔✔C. inform the occupants the water will be turned off The pressure exerted at the base of a column of water two (2) feet high is: A. .217 p.s.i B. .433 p.s.i C. .866 p.s.i D. .002 p.s.i E. .299 p.s.i ✔✔C. .866 p.s.i The term that describes the internal cross connection control is: A. contamination B. pollution C. suppression D. isolation E. containment ✔✔D. isolation The by-pass line of a backflow assembly must have a backflow device of equal: A. flow capacity B. corrosion resistance C. length D. diameter E. protection ✔✔E. protection The venturi principle suggests that as the water velocity in a pipe increased, the pressure will: A. create back pressure B. decrease C. remain the same with regard to flow rate D. increase E. compress the volume of water ✔✔B. decrease The State of Ohio Plumbing Code requires that all double check valve backflow assemblies be tested at the time of installation and at least once every: A. 12 months B. 24 months C. 36 months D. 48 months E. 60 months ✔✔A. 12 months The type of backflow protection required for a limited area fire sprinkler system containing any additive is a(n): A. air gap separation B. dual check valve type backflow preventer C. double check valve backflow assembly D. pressure vacuum breaker assembly E. reduced pressure principle backflow assembly ✔✔E. reduced pressure principle backflow assembly The minimum air gap separation in accordance with accepted engineering practice for a potable water supply system is: A. 0.25 inches B. 0.50 inches C. 1.00 inches D. 1.50 inches D. 2.00 inches ✔✔C. 1.00 inches An air gap separation is measured from the end of the discharge piping to the: A. fixture drain B. side of the tank or vessel C. flood level rim of the receiving vessle D. floor E. weir of the fixture trap ✔✔C. flood level rim of the receiving vessle The type of backflow protection provided by an air gap separation is: A. back pressure- high hazard only B. back siphonage- high hazard only C. back pressure- low hazard only D. back siphonage- low hazard only E. back siphonage- high and low hazard ✔✔E. back siphonage- high and low hazard In accordance with A.S.S.E. Standards, an atmospheric type vacuum breaker may not be pressurized for more than: A. one hour B. two hours C. six hours D. twelve hours E. twenty four hours ✔✔D. twelve hours In accordance with A.S.S.E. Standards, the critical level for installation of an atmospheric type vacuum breaker above the highest point of downstream use is a minimum of: A. six inches B. twelve inches C. eighteen inches D. twenty four inches E. thirty inches ✔✔A. six inches If the critical level of an atmospheric type vacuum breaker is not marked, the level is considered to be: A. air inlet valve B. top of the device C. check valve outlet D. bottom of the device E. device body outlet ✔✔D. bottom of the device A back siphonage vacuum breaker is approved backflow protection for: A. back pressure- low hazard only B. back siphonage- intermittent pressure only C. back pressure- continuous pressure D. back siphonage- high hazard only E. back siphonage- continuous pressure ✔✔B. back siphonage- intermittent pressure only An acceptable downstream installation from an atmospheric type vacuum breaker is a(n): A. submerged inlet two feet below the device B. irrigation system zone control valve C. quick closing solenoid valve D. garden hose nozzle E. pneumatic control valve ✔✔A. submerged inlet two feet below the device The type of backflow protection provided by a dual check valve type backflow preventer is: A. back siphonage- low hazard only B. back pressure only- high and low hazard C. back siphonage only- high and low hazard D. back pressure and back siphonage- high and low hazard E. back pressure and back siphonage- low hazard only ✔✔E. back pressure and back siphonagelow hazard only In accordance with A.S.S.E. standards, the critical level for installation of a pressure vacuum breaker above the highest point of downstream use is a minimum of: A. six inches B. twelve inches C. eighteen inches D. twenty four inches E. thirty inches ✔✔B. twelve inches Pressure vacuum breaker assembly shut off valves: A. are not considered part of the assembly B. are not used during the field test of the assembly C. are not required to be drip tight D. are located on the inlet and outlet of the assembly E. contain an inlet valve test cock on all assemblies ✔✔D. are located on the inlet and outlet of the assembly The air inlet valve of a pressure vacuum breaker assembly must open to the atmosphere at a differential pressure across the valve of not less than: A. 1.0 p.s.i gauge B. 2.0 p.s.i atomospheric C. 1.0 p.s.i absolute D. 2.0 p.s.i gauge E. 1.0 p.s.i atmospheric ✔✔A. 1.0 p.s.i gauge In accordance with A.S.S.E. Standards, dual check valve type backflow preventers for carbonated beverage dispensers are approved for: A. back pressure- high hazard only B. back siphonage only- high and low hazard C. back pressure and back siphonage- high hazard D. back pressure and back siphonage- low hazard only E. back pressure only- high and low hazard ✔✔D. back pressure and back siphonage- low hazard only Pressure vacuum breaker assemblies are approved for the following applications: A. back pressure and containment B. back pressure and isolation C. back siphonage and containment D. back siphonage and isolation E. back pressure and back siphonage ✔✔D. back siphonage and isolation The check valve of a pressure vacuum breaker assembly must remain drip tight with an upstream pressure of at least 1.0 p.s.i gauge and a downstream pressure of: A. .0 ps.i gauge B. 1.0 p.s.i gauge C. 1.0 p.s.i absolute D. 2.0 p.s.i gauge E. 2.0 p.s.i absolute ✔✔A. .0 p.s.i gage The number one test cock on a pressure vacuum breaker assembly is located between the check valve and the: A. air inlet valve B. downstream check valve C. inlet shut off valve D. number two test cock E. outlet shut off valve ✔✔C. inlet shut off valve In accordance with A.S.S.E Standards, if not marked, the critical level of a pressure vacuum breaker assembly is considered to be the level of the: A. check valve B. bottom of the device body C. discharge piping D. number one test cock E. number two test cock ✔✔B. bottom of the device body The number two test cock of a pressure vacuum breaker assembly is located between the: A. downstream check valve and outlet shut off B. inlet shut off valve and check valve C. number one test cock and check valve D. outlet test cock and outlet shut off E. upstream check valve and air inlet valve ✔✔A. downstream check valve and outlet shut off The number of standard test cocks on a double check valve detector assembly is: A. two B. three C. four D. six E. eight ✔✔A. two A double check valve assembly is approved for: A. low hazard- back siphonage only B. low hazard- back pressure only C. low hazard- back pressure and back siphonage D. high hazard- back siphonage only E. high hazard- back pressure and back siphonage ✔✔C. low hazard- back pressure and back siphonage The number one test cock of a double check valve assembly is located immediately: A. downstream of the inlet shut off valve B. downstream of the outlet shut off valve C. upstream of the outlet shut off valve D. upstream of the inlet shut off valve E. downstream of the number one check valve ✔✔D. upstream of the inlet shut off valve The number two test cock of a double check valve assembly is located immediately: A. upstream of the number one check valve B. upstream of the number one shut off valve C. downstream of the number two check valve D. upstream of the number two shut off valve E. downstream of the number one check valve ✔✔A. upstream of the number one check valve The backflow testers certification is good for: A. 24 months B. 3 years C. 1 year D. 2 years E. 4 years ✔✔B. 3 years When testing a double check valve assembly, the first step to be completed is: A. attach the high pressure hose to test cock number two B. close the inlet shut off valve C. flush water through all test cocks D. attach the low pressure hose to test cock number three E. close the outlet shut off valve ✔✔C. flush water through all test cocks When testing a reduced pressure principle backflow assembly: A. the number one shut off valve must be closed tightly B. the vent hose is not used C. the number two shut off valve must be left open D. the number two shut off valve must be closed tightly E. both shut off valves must be closed tightly ✔✔D. the number two shut off valve must be closed tightly When testing a reduced pressure principle assembly, the relief valve must open to the atmosphere before the pressure differential reaches: A. 1.0 p.s.i.d or greater B. 1.5 p.s.i.d or greater C. 2.0 p.s.i.d or greater D. 2.5 p.s.i.d or greater E. 3.0 p.s.i.d or greater ✔✔C. 2.0 p.s.i.d or greater A reduced pressure principle assembly relief valve senses the supply pressure and the: A. supply to number one shut off valve B. supply to the number two check valve C. supply to the number two shut off valve D. supply to outlet shut off valve E. supply to the number one check valve ✔✔B. supply to the number two check valve The type of test equipment used to test a reduced pressure principle assembly is a(n): A. forty two inch sigh tube B. duplex pressure gauge C. atmospheric pressure gauge D. pair of bourdon gages E. differential pressure gauge ✔✔E. differential pressure gauge In accordance with Section 3745-99-01 of the Ohio Administrative Code, all yard hydrants must: A. not be subjected to back pressure B. not be used for drinking and culinary purpose C. protect against ground water contamination D. not drain into the ground E.. be used for auxiliary water supply only ✔✔C. protect against ground wanter contamination In accordance with Section 3745-95-07 of the Ohio Administrative Code, all booster pumps supplied from a public water system must be equipped with a pressure cut off switch that will shut off the pump when the pressure on the supply side of the pump reaches a minimum of: A. 10 p.s.i gauge B. 15 p.s.i gauge C. 20 p.s.i gauge D. 25 p.s.i gauge E. 30 p.s.i gauge ✔✔A. 10 p.s.i gauge