How is the maximum allowable load for a flange calculated?
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I’m working on a project involving skid-mounted equipment, which is connected to pipes outside the boundary area using flanges. It is necessary to determine the maximum allowable load on the nozzles at the boundary points as shown in the diagram. How can this be calculated, and what software can be used for it?
It is done through modeling using the stress analysis software Caesar.
Reference can be made to Appendix D of SH-T 3074-2018 Petroleum and Chemical Industry Steel Pressure Vessels, but the verification shall be carried out based on this load. Most pipeline stress checking software should be able to check pipe end loads and flange loads, right?
CII can only represent the loads that have already been applied; it’s not clear how to determine the allowable loads. The vendor is to provide the loads and moments at the connection points, as well as the displacements under design and operating conditions. Connection points refer to the flange connections where the pipes of my skid-mounted equipment meet the external systems.
He needs the allowable load for this pipe connection in order to conduct a stress analysis of the pipeline, so as to keep the external loads applied to the pipe connection within the limits he has specified. Refer to that standard to estimate an allowable load first; use this allowable load for stress analysis. If the results are satisfactory, no further action is needed; if not, consider either strengthening the pipe end or reducing the allowable load.
It’s not a thermal pipeline either; the foreign party has this requirement. It’s a bit awkward
This post was last edited by Take a look_knkRj on 2023-10-23 at 13:30. Refer to SH-T 3074-2018; use proportional scaling until the calculation is accurate. If not in proportion, for example Fx=100, Fy=1 ； Fx=80, Fy=80. The allowable load cannot be determined at all
FE ANASYS will work; I don’t want to go through such trouble.