RE: Tow acceleration of piping

From: <N.>
Date: Thu May 16 2002 - 21:28:00 EDT

True. It is movement of the platform during load out operation. When the platform is being transferred to location on a barge, due to the rolling and pitching movement of the barge there will be some induced acceleration generated which causes loading on the piping which is transmitted to the structure. The piping and structure has to be designed for this movement and load. The value will be in terms of 'G' in X, Y and Z direction. In CAESAR this term is fed in "uniform load" item under "Vectors 1, 2, and 3" as applicable. In the same item you have to click on the 'G' tick box in the "Special Execution parameters" of "KAUX column". The value of 'G' is supplied by the structural department based on their analysis.

The same is applicable for an FPSO (Floating, Production, Storage and Offloading facility). In case of an FPSO this is a continuous feature. You will have this all the time.

I hope this will answer the question. Please correct me if I am wrong. More suggestions are welcome.

Regards
Durga Prasad

Halliburton KBR
Singapore Operations Centre
Engineering - Mechanical / Piping Department

* : n.durga.prasad@halliburton.com
*  : 0065-63294149 (Office)
*   : 0065-67637294 (residence)
       : 9379-5007 (Hand phone)

-----Original Message-----
From: Hari Prasad, Macharla [mailto:macharla777@yahoo.com] Sent: May 16, 2002 7:10 PM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] Tow acceleration of piping

Hi,
We are involved in the engineering of offshore piping.   Presently working for a wellhead platform. I have a doubt on tow acceleration of piping. I understand this has got to do with the movement of piping while carrying deck for loadout operation. I would like to know how to anlyse the piping system on Caesar-II software for loadout case. Do we need to calculate acceleration factor and feed it as uniform load. Can anyone explain in detail

Regards

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Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Received on Thu May 16 21:28:00 2002