Backflow Tester case studies
Backflow Tester · Put your knowledge to work in context.
The ABPA Backflow Prevention Assembly Tester certification is a professional credential issued by the American Backflow Prevention Association, an organization whose stated mission is "to protect drinking water through cross-connection control and backflow prevention." The credential is aimed at technicians who test backflow prevention assemblies in the field, and ABPA also offers a related Cross-Connection Control Specialist credential for program administrators. According to ABPA's published exam listings, the tester examination combines a written multiple-choice component with a hands-on performance component in which candidates demonstrate testing procedures on assemblies. The Backflow Tester case studies are 5 cases and about 2,169 words.
1Annual Test on a Reduced-Pressure Assembly With a Slow-Dripping Relief Valve
A certified tester arrives at a commercial laundry to perform the annual test of a 3-inch reduced-pressure principle backflow prevention assembly installed on the domestic water service. The building has been in service for nine years and the assembly has no documented maintenance history.
487 words, about 2 min2New Installation: Air Gap Versus Reduced-Pressure Assembly on a Boiler Feed Line
A mechanical contractor is installing a new boiler feed line in a 12-story office building. The boiler uses chemical treatment, and the feed line is connected to the potable water system.
462 words, about 2 min3Failed Second Check on a Double-Check Assembly: Repair or Replace?
A tester is performing the annual test of a 2-inch double-check valve assembly at a car wash. The assembly is 14 years old and has been repaired twice in the past four years.
435 words, about 2 min4Test Procedure Error: Gauge Calibration and Its Effect on Results
A tester is testing a reduced-pressure assembly at a hospital. The tester's differential gauge was last calibrated 18 months ago, and the calibration sticker is faded.
378 words, about 2 min5Thermal Expansion and a Relief Valve That Will Not Seat
A tester is called to a 4-inch reduced-pressure assembly serving a large apartment building. The building has a new hot water recirculation system, and the assembly's relief valve has been discharging intermittently for two weeks.
407 words, about 2 min