Before testing gas pipes, what must be done to the interior?

Cleaning the interior of gas pipes of foreign material before testing is crucial for several reasons. Residual substances such as dirt, oil, or any foreign debris can interfere with the testing process and affect the accuracy of the results. Ensuring the pipes are clean allows for a clear assessment of their integrity and helps prevent any potential contamination that might arise during the pressure testing, which is typically conducted to identify leaks or weaknesses in the piping system.

Maintaining cleanliness in gas pipes prior to testing is a standard practice that contributes to safety and reliability, ensuring that any observed pressure drop or failure in integrity can be attributed to actual issues with the pipe itself, rather than the presence of foreign materials. This practice is essential in upholding safety standards in gas handling and maintenance.