ASSE 5140 study guide
ASSE 5140 · Work through your exam, one topic at a time.
ASSE 5140 is a multiple-choice certification examination for professionals who test and maintain backflow prevention assemblies protecting fire sprinkler systems. The work sits at the intersection of plumbing code, cross-connection control and life-safety system integrity: a competent tester recognises an acceptable installation, confirms that an assembly performs as required, and produces documentation a code official can defend without ambiguity. The ASSE 5140 study guide has 7 sections and about 2,006 words.
01Plumbing and Mechanical Code Fundamentals
This domain tests whether you can navigate the code's structure, not just memorize numbers. Know the difference between the model code (uniform plumbing/mechanical code) and the adopted local amendments; questions often hinge on which document governs when they conflict.
311 words, about 2 min02Backflow Prevention and Cross-Connection Control
Cross-connection control exists to protect potable water from contamination or pollution. A cross-connection is any actual or potential connection between potable water and a source of contamination.
333 words, about 2 min03Water Supply and Distribution Systems
Water supply questions test your ability to reason about pressure, flow, and pipe sizing. Key concepts: fixture units (FU), demand load, developed length, static vs.
307 words, about 2 min04Drainage, Waste, and Vent Systems
DWV design depends on slope, pipe size, fixture units, and venting. Gravity drainage requires adequate slope (commonly 1/4 inch per foot for smaller pipe), proper fitting selection, and venting to protect trap seals.
274 words, about 1 min05Fixtures, Fixture Fittings, and Water Heaters
This domain covers fixture materials, installation clearances, accessibility, and water efficiency. Know that fixtures must be of an approved material, properly supported, and installed with the required clearances and trap seal protection.
279 words, about 1 min06Inspection, Testing, and Plan Review Procedures
Inspections verify compliance at stages: rough-in (before concealment), final (after completion), and special inspections (e.g., backflow, gas piping). Candidates must know what is checked at each stage, who may perform tests, and what documentation is required.
249 words, about 1 min07Safety, Administration, and Code Enforcement
This domain covers permits, fees, inspections, appeals, violations, stop-work orders, and the authority of the AHJ. Know the difference between a permit and a license, who may issue stop-work orders, and the appeals process.
253 words, about 1 min