Pre-Test Leak Walk
Walking the duct before leakage testing so obvious leaks, open taps, access doors, and loose caps are caught before the test crew shows up.
What This Helps With
Walking the duct before leakage testing so obvious leaks, open taps, access doors, and loose caps are caught before the test crew shows up.
Apprentice words: leak walk, pressure test prep, duct leakage test, open branch, temporary cap
Common problem: Pressurizing a system with open ends, loose doors, unsealed joints, or temporary covers that blow off.
Check First
What Not To Do
Do not let the test start just because the fan is there. Do not use mastic as a temporary cap. Do not ignore hidden access doors or uncapped branches.
What can go wrong: Pressurizing a system with open ends, loose doors, unsealed joints, or temporary covers that blow off.
Better Foreman Question
Before the leakage test, can we walk the zone and confirm all caps, access doors, dampers, and test boundaries are ready?
Verify With
Source to verify: Project TAB spec, leakage test plan, SMACNA leakage guidance
Safe wording: Testing requirements depend on project spec and pressure class.