Duct Leakage Test SMACNA Class Acceptance

Field inspection template for documenting duct leakage testing against SMACNA leakage class acceptance criteria, including seal class, test pressure, measured CFM leakage, and pass/fail versus design allowable.

Inspection Identification

• Project name / job number
  Record the project name and internal job or work order number.
• System ID / duct section inspected
  Identify the duct system, branch, zone, or test section covered by this record.
• Inspection date and time
  Document when the leakage test was performed.
• Inspector name and company
  Enter the qualified inspector or testing technician and company name.

Duct System and Design Criteria

• Duct system type
  Select the duct system category being tested.
• SMACNA leakage class / seal class
  Record the specified leakage class or seal class used to determine allowable leakage.
• Design allowable leakage (CFM)
  Enter the maximum allowable leakage for the test section based on the project criteria.
• Test pressure specified by design
  Record the required test pressure used to establish acceptance.

Test Setup and Preconditions

• Test section isolated and sealed
  Verify the duct section was isolated from the rest of the system and all openings were sealed for the test.
• Test apparatus calibrated and suitable for use
  Confirm the leakage test equipment was calibrated and appropriate for the pressure range being measured.
• Ambient conditions recorded
  Document relevant site conditions that could affect the test, such as temperature, wind, or access constraints.
• Access to test points unobstructed
  Verify access to test ports, joints, and sealed openings was available for inspection.

Leakage Test Results

• Actual test pressure
  Record the pressure achieved during the leakage test.
• Measured leakage
  Enter the measured leakage rate for the duct section at the test pressure.
• Leakage within allowable limit
  Confirm the measured leakage does not exceed the design allowable leakage.
• Test result
  Record the final acceptance outcome for the tested duct section.

Deficiencies, Corrective Actions, and Sign-Off

• Deficiencies or non-conformances noted
  Describe any leakage sources, sealing defects, access issues, or other non-conformances observed during the test.
• Corrective action required
  Indicate whether repair, resealing, or retesting is required before acceptance.
• Inspector signature
  Inspector attestation that the test record is accurate and complete.
• Owner / AHJ / commissioning representative sign-off
  Optional acceptance acknowledgment by the owner, AHJ, or commissioning representative.