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Re: [MW:32753] Selection of Pigs For 30" Gas Pipeline

By Materials & Welding
For pigging you need min 5 D bends mostly in pipelines which require pigging 40 D bends are used in cross country pipe lines.

Thanks and Regards,

K.S.Unnikrishnan
Kollara

On 17-Jan-2022, at 8:09 AM, Engr. Asif Chowdhury <al.istiaque09@gmail.com> wrote:

Dear Experts,

Hope everyone is doing great.

In a cross country gas pipeline project over a bridge deck we have almost completed ou welding activities and right now we are facing problem in selection of Pigs for that pipeline. For your information, the pipeline is about approximately 6 Km in length consisting of  14 nos U-loop and 06 Nos W-loop and 01 nos inlet and 01 nos outlet loops. Outer Dia of Pipeline is about 762 mm with a wall thickness of 25.4 mm.

The elbows in the loops are 1.5D 90 Degree LR BW elbows.

The entire pipeline has some pipe miter joints included but the angle of miter falls between the range of 2.5 Degree to  5 Degree.

 The normal pigs we use for our cross country pipeline having 3D & 5D Bends are not suitable here.

As I have limited knowledge on pigging, hope some expert comment can help me to select the appropriate pig and finalize procurement for my project in Bangladesh.


With best regards,
Asif
PM
PMB-NGP Project
WhatsApp: +8801925-884133
E-mail: al.istiaque09@gmail.com
The Royal Utilisation Services (Pvt.) Ltd.

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<Loop Pictures.pdf>

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