Leak Walk Before Repairing Duct
Find the actual leak path before smearing more sealant. Walk the joint, seam, access door, tap, cap, and temporary test closure in a consistent order.
Stop if
- The leak is showing at [joint/seam/access/tap]. Do you want the mechanical fit corrected first, or is the approved sealant repair enough here?
Watch out
- Do not bury a loose joint, crooked flange, open seam, or failed access-door gasket under more mastic.
Check
- Confirm the test section and pressure condition
- Listen and feel only where the test procedure allows
- Mark each suspected leak before repairing
- Separate mechanical fit problems from sealant problems
- Photograph repeat failures before they disappear under mastic
Steps
- Confirm the test section and pressure condition
- Listen and feel only where the test procedure allows
- Mark each suspected leak before repairing
- Separate mechanical fit problems from sealant problems
- Photograph repeat failures before they disappear under mastic
Say this to your foreman
The leak is showing at [joint/seam/access/tap]. Do you want the mechanical fit corrected first, or is the approved sealant repair enough here?
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