Pressure testing of process pipelines – Issues with the installation of temporary blind flanges on pump connections
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Currently, pressure testing is being carried out on the process pipelines for this project. The calculated thickness of the temporary blind flanges is around 4 mm. There is concern that forcing these blind flanges in place could affect the stress at the pump inlet. The current approach involves installing temporary blind flanges at the inlet and outlet valves of the pump before conducting the pressure test; the pipelines between the valves and the pump are not subjected to pressure testing, while all joint connections are subjected to 100% radiographic inspection. I would like to ask the experts: is this approach acceptable? Are there any better solutions? Thank you all. I used to work on containers, so I don’t have much experience with pipelines
Sent to the wrong place. Please, sir, transfer it to the Pipeline Forum{:1_90:}
What is the pipe diameter, and what is the test pressure?
Generally, it’s possible, but the information is incomplete, so it cannot be confirmed. 1. What are the diameters of the inlet and outlet pipes? 2. What is the pressure for testing? 3. If the coupling alignment check was performed before pressure testing and the results were satisfactory, a blind flange can be directly installed between the pipeline and the pump flange. After pressure testing, simply recheck the coupling alignment.