ASSE 5110 study guide
ASSE 5110 · Work through your exam, one topic at a time.
The ASSE 5110 Backflow Prevention Assembly Tester credential - commonly called BPAT - is a professional certification for technicians who test, maintain, and troubleshoot backflow prevention assemblies installed in municipal water systems and private plumbing. It is aimed at plumbing and waterworks personnel, cross-connection control field inspectors, and maintenance staff at facilities that must protect potable supply from contamination by backsiphonage or backpressure. The ASSE 5110 study guide has 6 sections and about 1,680 words.
01Principles of Backflow and Cross-Connection Hydraulics
A cross-connection is any actual or potential link between potable water and a nonpotable source. Backflow is reverse flow caused by backsiphonage (negative or sub-atmospheric pressure) or backpressure (downstream pressure exceeding supply pressure).
281 words, about 1 min02Cross-Connection Control Regulations, Codes and Standards
Cross-connection control is built on layers. The Safe Drinking Water Act establishes a national drinking-water framework, but states with primacy and local authorities having jurisdiction (AHJs) adopt and enforce the detailed rules.
276 words, about 1 min03Backflow Prevention Assembly Types, Design and Applications
Selection begins with hazard classification and the direction of possible backflow. An air gap provides the highest protection when properly maintained and unobstructed.
287 words, about 1 min04Field Test Procedures and Test Equipment
Field testing proves that an assembly performs as designed under controlled conditions. Before connecting hoses, inspect the assembly, confirm flow direction, identify test cocks, and verify the differential pressure gauge is calibrated, undamaged, and zeroed.
275 words, about 1 min05Troubleshooting, Repair and Maintenance of Assemblies
Troubleshooting starts with observation, not parts replacement. Record supply and downstream pressures, listen for continuous relief discharge, check for debris or scale, and confirm that the assembly is not reacting to thermal expansion, water hammer, or downstream backpressure.
284 words, about 1 min06Records, Reporting and Program Administration
A cross-connection control program depends on accurate records. The assembly inventory should identify owner, address, assembly type, make, model, size, serial number, location, hazard, and required test frequency.
277 words, about 1 min