Determination of pressure testing for TUBING pipes with threaded connections
Thread Content
For TUBING and fittings connected by threads, is the test pressure also determined according to the requirements of the process pipeline, that is, the test pressure is 1.5 times the design pressure? For example, in the case of high-pressure pipelines, for threaded TUBING and fittings with a design pressure of 60 MPa, the hydrostatic test pressure will be 90 MPa. Is such a high test pressure safe and reliable? During the pressure testing, did the threaded connections come loose? Are there any specific pressure testing specifications for TUBING pipelines? Thank you all for helping to answer as well.
Whether the threads will come loose depends on whether the strength of those threads is sufficient to handle such high design pressures. The threads chosen should be able to withstand such high pressures, with a certain safety factor taken into account. A test pressure of 1.5 times the design pressure is the standard requirement, and this is because a safety factor is considered during the design process