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D.3 Gas Piping and Connection Inspections
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- Leak Checks. Conduct a test for gas leakage using
either a non-corrosive leak detection solution or a
CGD confirmed with a leak detection solution.
The preferred method for leak checking is by use of gas leak detection solution applied to all joints. This method provides a reliable visual indication of significant leaks.
The use of a CGD in its audio sensing mode can quickly locate suspect leaks but can be overly sensitive indicating insignificant and false leaks. All suspect leaks found through the use of a CGD should be confirmed using a leak detection solution.
Where gas leakage is confirmed, the owner should be notified that repairs must be made. The inspection should include the following components:
- Appliance Connector. Verify that the appliance connection type is compliant with Section G2422 of the International Fuel Gas Code. Inspect flexible appliance connections to determine if they are free of cracks, corrosion and signs of damage. Verify that there are no uncoated brass connectors. Where connectors are determined to be unsafe or where an uncoated brass connector is found, the appliance shutoff valve should be placed in the off position and the owner notified that the connector must be replaced.
- Piping Support. Inspect piping to determine that it is adequately supported, that there is no undue stress on the piping, and if there are any improperly capped pipe openings.
- Bonding. Verify that the electrical bonding of gas piping is compliant with Section G2411 of the International Fuel Gas Code.
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