Questions regarding pressure testing
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Can PN2.5 pipes be pressure-tested at 3.0 MPa? If there is a source, please include it. Thank you
Since the operating pressure for PN2.5 pipes is 2.5 MPa, and the test pressure is 1.25 times the operating pressure, it should work.
Yes, pipes are designed with a certain safety factor during manufacturing, and this factor can be found in GB8163. There are in the forum
Generally, when testing the pressure of pipelines, the design pressure is multiplied by a temperature coefficient
The test pressure is determined such that the minimum test pressure is not less than 1.5 times the design pressure. GB8163
To be precise: the test pressure is MaxX of the maximum pressure (1.1–1.3)
For steel pipes subjected to internal pressure, the hydrostatic test is conducted at 1.5 times the design pressure of the pipeline, while the pneumatic test is carried out at 1.15 times the design pressure. For details, refer to the \"Code for Construction and Acceptance of Industrial Metal Piping Projects\" GB50235-97.
The original poster did not understand the concept of pipeline pressure testing. The pressure for pipeline testing is determined based on the design pressure of the material, in accordance with the relevant provisions in national standards or Sinopec standards.