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ABC Cross-Connection Control and Monitoring Flashcards

6 cards from real ABC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 ABC Cross-Connection Control and Monitoring flashcards as text

  1. Which organization publishes the Approved Backflow Prevention Assemblies list that many US states reference for cross-connection control programs?

    Answer: USC Foundation for Cross-Connection Control and Hydraulic Research

    The USC Foundation for Cross-Connection Control (University of Southern California) publishes the widely recognized approved assemblies list used by most state programs.

  2. How often must a Reduced Pressure Zone (RPZ) assembly be tested per standard cross-connection control program requirements?

    Answer: Annually at minimum

    Most state and municipal cross-connection control programs require RPZ assemblies to be tested at least annually by a certified tester.

  3. What is the primary purpose of a double check valve assembly (DCVA)?

    Answer: Protect against back-pressure and backsiphonage for low-hazard connections

    A DCVA uses two independently operating check valves to protect against both back-pressure and backsiphonage at low-to-moderate hazard cross-connections.

  4. A certified backflow prevention assembly tester must verify which condition during an RPZ field test?

    Answer: That the relief valve opens before the first check valve fails closed

    The critical RPZ test confirms that the differential relief valve opens (discharges) before the inlet check valve pressure differential drops to zero, ensuring safe operation.

  5. Which of the following locations represents a high-hazard cross-connection requiring an RPZ assembly?

    Answer: Chemical feed system connected to the potable water supply

    Chemical feed systems are classified as high-hazard cross-connections because contamination could cause severe illness or death, requiring maximum RPZ protection.

  6. What action should a water system take if a customer refuses to install a required backflow prevention assembly?

    Answer: Discontinue water service until the assembly is installed

    Water systems have the regulatory authority to discontinue service if a customer refuses to comply with cross-connection control requirements that protect public health.