ASSE 5110 case studies
ASSE 5110 · Put your knowledge to work in context.
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. Candidates are typically expected to combine hands-on mechanical skill with a working knowledge of the codes and hydraulic principles that justify each assembly type. Exam content is organized around six practice areas: backflow and cross-connection hydraulics; regulations, codes, and standards; assembly types, design, and applications; field test procedures and test equipment; troubleshooting, repair, and maintenance; and records, reporting, and program administration. The ASSE 5110 case studies are 5 cases and about 3,698 words.
1Terraced Garden, Broken Main
A hillside residence is served by a 2-inch service tapped from a 12-inch city main. Static pressure at the tap is 68 psi.
735 words, about 4 min2Dual Check at a Mixed-Use Service
A 6-story mixed-use building is nearly complete. The domestic service is a 2-inch line with a single 2-inch dual check valve in the meter room; the contractor states that this satisfies containment.
708 words, about 4 min3Why the Relief Port Discharges at 2 a.m.
A 3-inch RPZ was installed 18 months ago at the service entrance of a 40-unit apartment building. Within months the relief port began discharging, typically between 1 and 4 a.m.
780 words, about 4 min4Readings That Do Not Add Up
A tester submits a report for a 2-inch RPZ at a car wash. Readings: static supply pressure 78 psi; check valve No.
718 words, about 4 min5Obsolete Parts and Emery Cloth
A 4-inch RPZ at a food-processing plant has been in service 16 years. The manufacturer discontinued the model 5 years ago and the OEM repair kit is no longer available.
757 words, about 4 min