pup piece in every 1 km

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limesh M

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May 12, 2011, 3:02:32 AM5/12/11
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Dear All,
 
Why some client specification requires 6 m pipe pup piece in every 1 km pipeline?
 
Regards,
 
Limesh

SOHAIB GHNAIMAT

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May 12, 2011, 2:45:20 PM5/12/11
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This is required during scraping the pipeline by the inspection instrument scraper / Calliper Run.

 

Regards,

 

Sohaib



From: limesh M <lime...@gmail.com>
To: Materials & Welding <material...@googlegroups.com>
Sent: Thu, May 12, 2011 8:02:32 AM
Subject: [MW:11038] pup piece in every 1 km
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lakshman kumar

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May 12, 2011, 11:46:09 PM5/12/11
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Dear all,

 

6mtr is the minimum length requirement for the pup piece,

 

But using 6 mtr pup piece in every 1 KM of pipe line is not a requirement (or mandatory), and any client will not recommend also ( As per my previous experience)

 

Request you verify / provide the spec of the client if available.

 

 

 

Thanks & Regards

 

Lakshman kumar.B | Manager - QA/QC | LANCO  INFRATECH LIMITED
Plot# 1255 | Sanjeevani Chowk | Mahanadi Vihar | Cuttack 753004

Phone : + 91-671-2445033| Mobile: +91 9937286851 | www.lancogroup.com

Go Green |The future will thank you: Lakshma...@lancogroup.com, Lakshma...@gmail.com

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chanockin

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May 13, 2011, 6:09:21 PM5/13/11
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hi limesh,

In Mexico the subsea pipelines is for the divers inspection, mfl
ispection, etc. and the lenght is due to the standard pipe´s lenght
(40') you just have to cut the pipe in the half, and then you have a
double joint.




the NRF-013-Pemex-2005 says:

Carrete de monitoreo.- Tramo de tubería con una junta de fabrica en su
parte central y que sirve para
identificar las lecturas de los diablos instrumentados.

"pup monitoring .- Section of pipe with a girth weld made ​​in its
central part and serves to
identify pigs instrumented readings."

best regards.
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