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Backflow CH (1-10)
| Question | Answer |
|---|---|
| Drinking Water Standards in the United States were first established by the | Public Health Service |
| The AWWA'S manual of recommended practice about backflow prevention was first published in | 1966 |
| The USEPA'S Total Coliform Rule contains requiremens for. | Cross Coneection Surveys |
| Sanitary survey must be conducted by community water supplies every | 3 years |
| At the Federal regulatory level, cross-connection control is not a | Funded Mandate |
| Under Federal Law, citizens can sue a water supplier if the quality does not meet | Federal Standards |
| Utilities are responsible for the waters quality to the last | Meter Connection |
| In 1925, the AWWA determined that ________ were not adequate protection | Check Valves |
| A Federal court can assess a civil penalty for maintaining a hazardous connection of up to $_________ per day. | $15,000. |
| In 1898, a water utility was fined for supplying poor water in the amount of | $5,000. |
| A pump discharge generating 43 psig will result in a water column height of | 100 ft. (Ex. 43x2.31= 99.33) |
| At sea level, the maximum vacuum possible is _______ psig. | 14.7 psi |
| To operate, a barometric loop must be installed | At the discharge of a vacuum pump. |
| A fluids velocity increase results in a | Admit air into the system. |
| For fluids to flow, there must be a path and a | Difference in pressure |
| Absolute pressure consist of | Atmospheric + Gauge Pressure |
| Negative gauge Pressure may result from | High usage |
| With an equal vacuum applied, a fluid lighter than water will produce a column elevation | Higher than water |
| The base of a water column 20ft high produce of ______ psig | 8.7 psi (ex. 20 x .433 = 8.66) |
| A flushometer vacuum breaker must be installed above the fixture a minimum of ______ inches | 6 inches |
| A heat exchanger use of potable water must provide the protection of | Double wall piping |
| The Uniform Plumbing Code requires backflow preventers to be tested by a | ASSE backflow preventer tester |
| The critical installation level for a water closet ball cock is _______ inches | 1 inch |
| Any backflow preventer may not be located in an area containing | Toxic fumes |
| The Uniform Plumbing Code color code for potable water pipe labels is | Green with white lettering |
| The Uniform Plumbing Code requires that backflow preventers be maintained by the | Person having control of such device |
| Backflow preventer shall be retested when | Relocated |
| Potable water connections to the inlet of a floor drain trap are protected with a | Atmospheric vacuum breaker |
| The backflow preventer not allowed on an irrigation system is a | Double check valve assembly |
| A single check valve does not provide | Backflow protection |
| A hose bibb vacuum breaker contains a | Spring loaded check valve |
| Flush tanks contain a specialized type of | Atmospheric vacuum breaker |
| A dual Check valve provides protection against | Contaminants |
| When a backflow preventer is installed near a meter it is recommended that the plumbing system contain a | Expansion tank |
| A dual Check valve is not | In line testable |
| An application for a dual Check with an intermediate atmospheric vent is a | Low pressure residential boiler |
| Never permit a backflow preventer to be installed where it can be | Submerged |
| Backflow preventers that open to air must not be installed in areas of | Toxic fumes |
| A dual Check valve with an intermediate vent shall not be installed on a | Commercial boiler |
| An airgap separation must be inspected | Annually |
| With the exception of a drinking fountain an airgap separation must never be less than _____ inches | 1 inch |
| Water pressure booster pumps are typically located at | Tall buildings |
| A barometric loop protects the potable water supply from | Backsiphonage |
| The barometric loop piping rise is approximately _______ feet | 35 ft. |
| An airgap separation near a wall must be increased by _______ % | 50% |
| Water discharge to a tank through an airgap separation loses it's | Free chlorine |
| An airgap separation is measured from the discharge piping to the | Food level rim |
| At sea level a perfect vacuum will lift water ________ feet. | 33.9 ft. (Ex. 14.7 x 2.31 = 33.957) |
| Discharge piping is not close to a wall if the distance is at least ______ diameter | 3 diameter |
| Atmospheric pressure entering a vacuum breaker air inlet is greater than the | Supply pressure |
| The device not permitted downstream of an atmospheric vacuum breaker is a | Isolation pollution |
| An atmospheric vacuum breaker is not permitted for use with | Continuous pressure |
| The number of required test cocks on an atmospheric vacuum breaker is | 0 |
| A deck mounted atmospheric vacuum breaker critical level is located above it use by ________ inches | 1 |
| The air inlet valve of an atmospheric vacuum breaker is fully open when the valves water pressure reaches _______ psig | 0 |
| The critical installation level above a fixture use for an atmospheric vacuum breaker is _______ inches | 6 inches |
| An atmospheric type vacuum breakers check valve closing pressure is ______ psig | 0 |
| An atmospheric type vacuum breakers is used for protection from a | Utility slop sink |
| The hydraulic purpose of any vacuum breaker is to stop | A siphon |
| The device not permitted downstream of a pressure vacuum breaker assembly is a | Well water supply |
| A pressure may be used for the following except | Building containment |
| A pressure vacuum breaker is not permitted for use with | Elevated downstream piping |
| The critical installation level for a pressure type vacuum breaker assembly above its downstream use is _______ inches | 12 inch |
| The number 1 test cock of a pressure type vacuum breaker assembly is located at the | Outlet of shut off valve number 1 |
| The air inlet valve of a pressure vacuum breaker assembly must open when the pressure reaches | 1 psi |
| The critical installation level for a 2 inch pressure type vacuum breaker assembly is | 12 inch |
| The minimum check valve closing differential Pressure of a pressure type vacuum breaker assembly is | 1 psig |
| A pressure type vacuum breaker assembly may be used for the containment of a | Irrigation system |
| A spill resistant vacuum breaker is protection for | Isolation backsiphonage |
| A spill resistant vacuum breakers check valve must be drip tight at _______ differential | 1 psig |
| The closing and opening pressure of a spill resistant vacuum breakers vent valve is | 1 psi |
| An SVB is not installed in areas that contain | Toxic fumes |
| A characteristic of the SVB operation is that the air inlet must seal before the | Check valve opens |
| The required minimum number of resilient seated valves in an SVB is | 2 |
| An SVB may not be installed in an area with | Restricted air |
| For domestic flow the maximum allowed pressure loss from an SVB is | 10 psi |
| An SVB critical level must be above the downstream use by at least | 12 inches |
| The maximum hazard protection provided by an SVB is | Health |
| An approved double check valve assembly contains four | Test cocks |
| A check valve closing differential in a double check valve assembly is | 1 psi |
| The application of a double check valve assembly is based on | Degree of hazard |
| Double check valve assembly shutoff valves must be | Tightly closing |
| Test cock number 3 of a double check valve assembly is located | Downstream of check valve number 1 |
| A double check valve assembly must be installed above the floor by at least | 12 inches |
| The double check detector assembly bypass contains a | Flow indicator |
| The maximum hazard application of a double valve assembly is | Pollution |
| The clearance between a double check valve assembly test cock and a wall is | 24 inches |
| A double check valve assembly may be used at the following application except | Irrigation sprinkler systems |
| The purpose of a reduced pressure principle assembly is to | Vent Contaminants to Atmosphere |
| The calculated value between check valve number 1 and the relief valve opening is | The Buffer |
| The application of a reduced pressure principle assembly is | Any hazard application |
| The maximum level of protection provided by a reduced pressure principle assembly is | Health hazard |
| The drain diameter near a reduced pressure principle assembly should be sized as | Any potential relief discharge volume |
| The minimum installation height for a reduced pressure principle assembly is | 12 inches or 30 cm |
| A reduced pressure principle assembly's zone pressure should be | 5 psi (34kPa) less than supply |
| A reduced pressure principle assembly may not be | Submerged |
| A reduced pressure principle assembly may not be installed on connections | Between a water supply and sewer waste |
| A reduced pressure principle assembly installed in a vault must | Be removed |
Created by:
Drunksportsman