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Method statement for duct smoke test pdf

Duct air leakage test report 2025

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The document is a Duct Leak Test Form used for verifying leakage control in duct systems at the McMurdo Palmer South Pole Station. It outlines the conditions under which leakage tests are necessary, particularly for duct systems rated above 4-in. w.g. The form details general testing procedures, including setting up the test apparatus, calculating allowable leakage, and recording test results. It emphasizes the importance of proper sealing and assembly methods to minimize testing costs and provides contact information for further resources.

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Click ‘Get Form’ to open the duct air leakage test report in the editor.
Begin by filling in the 'ENGINEER', 'PROJECT', 'BLDG. NO.', and 'LOCATION' fields at the top of the form. Ensure that all information is accurate for proper documentation.
Enter the 'DATE' in M/D/YYYY format to record when the test was conducted.
In the 'LEAKAGE TESTS' section, review any notes regarding testing requirements based on duct pressure class ratings. This will guide you on whether testing is necessary.
Proceed to fill out the 'TEST RESULTS' section, including details about the test apparatus used, such as blower specifications and orifice sizes.
Complete the final sections by entering measured leakage values and obtaining signatures from witnesses to validate the results.

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Whats a good duct leakage test?

Verification can take place via either a post-construction test or a rough-in test. For the post-construction test, leakage measurement must be made across the entire system, including the manufacturers air handler enclosure, with all register boots taped or sealed at a test pressure of 0.1 inches w.g. (25 Pa).

What is the procedure for duct leakage testing?

Test Procedure: The system (ductwork or piping) is pressurised to a specified level using a fan or a blower. The rate of air loss is measured, usually by how much airflow is needed to maintain the test pressure. The leakage rate is compared to standard allowable limits (e.g., per DW/144 for ductwork).

What is the standard for duct leakage test?

Standard: The measured duct leakage must not exceed 0.06 CFM25 x floor area (in square feet) served by the system. Duct testing device. Manometer (a second manometer is helpful, but not required) Tape and paper or duct mask to seal registers.

What is the standard for duct leakage testing?

Based on the protocol for Total Leakage Testing, or Leakage Testing to Outdoors duct leakage in new construction shall not exceed 0.06 CFM25 x floor area (in square feet) served by the system for leakage to outdoors or 0.08 CFM25 x floor area (in square feet) served by the system for total leakage.

What is the Ashrae standard for duct leakage?

ASHRAE Standard 90.13 (section 6.4. 4.2. 2) requires air leakage testing of 100% of all outside ductwork and 25% of representative sections of all other ductwork designed to operate at a static pressure in excess of 3- inch water gauge.

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