Christopher, Mandal,
Yes, I have not done this before.
The 24" piping joins the 48" pipeline from the side at the center. Will this be a reason for the vibration. The gas flow is entering from the smaller cross section of the 24" size to the larger 48". Something to do with entrance into the branch. Also the impingement of the flow to the side of the 48".
The vibration had started after operations increased the export flow rates from the 30.5 MM m3/d to 33.5 The gas processing facility is rated for a design capacity flow rate of 44.
The 24" line before joining the 48" runs a stretch of about 20m after rising from U/G. Atleast 2 of the supports after the rise from U/G were in-effective as there was a gap at BOP and the support. That makes the span to 12m. For a 24" gas line the span can be even higher based on consideration of dead weight supporting.
This is the first time that I have received a beneficial answer from the list. I have even shown the list responses to my boss. I think it is about time that I sought that sponsorship for the site with the management.
Sajit
P.S. Paul, Can you allow me an upload of a copy of the piping drawing and a photograph or two of the area. The file sizes will come to about 250 KB each. They are in jpg format.
[Non-text portions of this message have been removed] Received on Wed Dec 24 02:39:00 2003
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