What is the minimum test pressure used when testing new gas systems?

The minimum test pressure for new gas systems is established to ensure that the system can safely handle pressures beyond its designated maximum working pressure. This safety measure is critical because it helps identify any leaks or weaknesses in the piping and joints before the system is put into service.

In this context, the correct option stipulates that the minimum test pressure is 1.5 times the proposed maximum working pressure. This means if the maximum working pressure is, for example, 10 psi, the system would be tested at 15 psi. This additional pressure provides a margin of safety, ensuring that the system can handle fluctuations in pressure during regular operation as well as any unexpected situations.

Testing at this elevated pressure allows for the detection of issues in the installation or materials used, which might not be apparent at regular operating pressures. By following this standard, technicians can ensure the overall integrity of the gas system, contributing to safe and efficient operation.