ASSE 6040 flashcards
ASSE 6040 · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Cross-connection
- Any actual or potential connection between a potable water system and a source of contamination or pollution that could allow backflow into the potable system.
- Backflow
- The reverse flow of water or other substances through a piping system, caused by backsiphonage or backpressure, that can contaminate the potable supply.
- Backsiphonage
- Reverse flow caused by a drop in supply pressure below atmospheric, creating a partial vacuum that draws nonpotable liquid into the potable piping.
- Backpressure
- Reverse flow caused when downstream pressure exceeds the pressure of the potable supply, pushing nonpotable water back into the potable system.
- Contamination
- The introduction of a substance that creates an actual hazard to public health when it enters the potable water system.
- Pollution
- The introduction of a substance that degrades water quality or appearance but does not create a health hazard to consumers.
- Health hazard
- A cross-connection condition that could cause illness or injury if backflow occurs, requiring the highest level of protection.
- Non-health hazard
- A cross-connection condition that degrades water quality but does not pose a health risk, allowing lower-level protection such as a double check valve.
- Air gap
- The vertical unobstructed distance between the lowest opening of a supply pipe and the flood-level rim of a receiving vessel; the only absolute backflow protection.
- Reduced pressure principle assembly
- A testable assembly with two spring-loaded check valves and a differential-pressure relief valve that discharges when the differential falls below about 5 psi.
- Double check valve assembly
- A testable assembly with two check valves used for non-health hazards where backpressure or backsiphonage could occur.
- Pressure vacuum breaker
- A testable device with a loaded check valve and an air inlet that opens on backsiphonage; it cannot be used where backpressure exists.
- Atmospheric vacuum breaker
- A non-testable device with a float check and air inlet that must be installed downstream of the last control valve and cannot be under continuous pressure.
- Spill-resistant vacuum breaker
- A testable device with a check valve and air inlet that can withstand continuous pressure and is used on systems such as boiler feed lines.
- Hose-bibb vacuum breaker
- A small device installed on hose connections to prevent backsiphonage; it must remain installed and be inspected periodically.
- Dual check with intermediate vent
- A device with two check valves and an intermediate vent used for low-hazard protection at a service connection.
- ASSE 1013
- The product standard covering reduced pressure principle assemblies, including performance and testing requirements for the assembly.
- ASSE 1015
- The product standard covering double check valve assemblies, specifying performance and testing requirements for the assembly.
- ASSE 5110
- The professional qualification standard for cross-connection control surveyors who inspect premises for cross-connections and hazards.
- ASSE 5120
- The professional qualification standard for backflow prevention assembly testers who test and maintain devices in the field.
- ASSE 6040
- The professional qualification standard for cross-connection control program administrators who manage program operations and compliance.
- Safe Drinking Water Act
- Federal law requiring public water systems to protect drinking water quality, including protection against cross-connection contamination.
- Program authority
- The legal basis, through ordinance, rule, or service contract, that allows a water supplier to require cross-connection control.
- Hazard classification
- The process of categorizing each service connection as a health hazard, non-health hazard, or no hazard to determine required protection.
- Premises isolation
- Protection installed at the service connection to prevent backflow from a customer's premises into the public water system.
- Internal isolation
- Protection installed inside a building to prevent backflow from a specific fixture or process into the building's own plumbing.
- Differential pressure gauge
- A field test instrument used to measure pressure differences across check valves and the relief valve of a reduced pressure principle assembly.
- Relief valve opening point
- The differential pressure at which the relief valve of a reduced pressure principle assembly opens, typically at least 2 psi.
- Check valve hold test
- A field test confirming that a check valve holds a specified minimum pressure, commonly 1 psi for double check assemblies.
- Annual testing
- The required periodic field test of backflow prevention assemblies, commonly performed once per year as set by the authority.
- Device record
- A file entry containing location, type, size, make, model, serial number, and test history for each backflow prevention assembly.
- Test compliance rate
- A program metric calculated as the number of assemblies tested on schedule divided by the total number of assemblies in the program.