Re: [MW:11258] Piggy-back pipeline installation

The most convenient way will be to set up two sets of welding stations from the line-up stations with both lines parallel and at permissible distance after coating and allowing for bending stresses, you will now bring the 4"  on intersection set on conveyor rollers from the bead stall just above the 24" and on contact, clamped on, all these will rely on welding stage design and stinger assembly for lowering, An alternative will be to have the 4" welding stages on a 1st floor above and exit just after the tensioners as the 24" will act as anchor when attached.

Regards,


Michael Ball
OIQS LTD
     

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From: "Alchemistbt@aol.com" <Alchemistbt@aol.com>
To: materials-welding@googlegroups.com
Sent: Thursday, June 2, 2011 2:40 PM
Subject: Re: [MW:11253] Piggy-back pipeline installation

Depends on how your barge is organized:  side lay/center ramp and how wide the production tunnel is?

 

Bob Teale

 

TPWS Inc. Houston, TEXAS
www.tealepipeweldsolutions.com

 

In a message dated 6/2/2011 3:54:04 A.M. Central Daylight Time, eduardocalva@hotmail.com writes:

Hi everyone¡¡¡
 
We are tendering for a 24" Ø and 4" Ø piggy-back  pipeline project.
 
I'm looking for a operational procedure or technique to install the pipelines. I know that the 4" Ø piggy-back pipeline is holded on the 24" Ø carrier pipeline, but how to weld the 4" Ø field joints and put it onto the 24" Ø pipeline inside the ramp of the barge?
 
Thanks for your time and help.

Eduardo Calva

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