ABC ABC Cross-Connection Control and Monitoring 2

Question 1

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

Accepted Answer

USC Foundation for Cross-Connection Control and Hydraulic Research

Answer

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

Question 2

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

Accepted Answer

Annually at minimum

Answer

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

Question 3

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

Accepted Answer

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

Answer

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

Question 4

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

Accepted Answer

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

Answer

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.

Question 5

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

Accepted Answer

Chemical feed system connected to the potable water supply

Answer

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

(ABC) Association of Boards of Certification Practice Test

(ABC) Association of Boards of Certification Practice Test

ABC ABC Cross-Connection Control and Monitoring 2