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What should be done with defects on gas piping or fittings according to code?

  1. Repaired

  2. Replaced or repaired and retested

  3. Repaired by a certified welder

  4. Ignored, as the operating pressure is low

The correct answer is: Replaced or repaired and retested

In accordance with HVAC codes and standards, any defects found in gas piping or fittings must be addressed properly for safety and functionality. The requirement to replace or repair and then retest the gas lines ensures that the integrity of the piping system is maintained after any repair work is performed. Gas piping systems are critical for safe operation, and even minor defects can lead to significant safety hazards, such as gas leaks that could cause explosions or other dangerous situations. By mandating a retest following repairs, the code seeks to confirm that the system is once again safe for operation and that any repairs have been effectively executed. The emphasis on replacing or repairing highlights that simply fixing the defect is not always sufficient, as sometimes the damage may be extensive enough to warrant a full replacement of the affected piping or fittings. Retesting serves as a verification step—ensuring that the piping is capable of withstanding operational pressures without any leaks. Addressing defects with this thorough approach aligns with the overarching goals of HVAC codes, which focus on ensuring public safety and maintaining system reliability.