Dear Group,
A problem has come up about the vibration of a 48", 600# LNG export pipeline and a connected 24" line near the pig launcher.
I would like to investigate the impressed frequency caused due to the flow and compare it with the natural frequency of the system.
I am aware that the natural frequency of the system may be determined using CAESAR. I wish to know how it is possible to determine the impressed frequency due to the gas flow.
The compressor driving the flow is about 200m away and is connected to this system by underground lines. Therefore, I think the transmission of the compressor induced vibration is not a contributing factor towards the vibration problem.
Sajit Received on Sun Dec 21 03:10:00 2003
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