two Pipeline crossing

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QA/QC

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Apr 18, 2020, 7:32:45 AM4/18/20
to Materials & Welding
Hello everyone 

durring welding of new pipeline 12'' we found that we are cross a pipeline in service  what is the correct procedure to do 

- we will cross our pipeline from the top or we should make it down the existing pipeline in service 

emmanuel lawrence

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Apr 18, 2020, 8:25:02 AM4/18/20
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When crossing an existing pipeline, best practice demands that the new pipeline should be crossed below the existing to avoid upheaval buckling of the new pipeline since the top soil is already tampered. In that case a minimum safe distance should be maintained.

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QA/QC

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Apr 19, 2020, 1:00:59 AM4/19/20
to Materials & Welding
Tnx

do we have any standard mention that from API 

Le samedi 18 avril 2020 14:25:02 UTC+2, emmanuellawrenceu a écrit :
When crossing an existing pipeline, best practice demands that the new pipeline should be crossed below the existing to avoid upheaval buckling of the new pipeline since the top soil is already tampered. In that case a minimum safe distance should be maintained.

On Sat, Apr 18, 2020 at 12:32 PM QA/QC <adnan...@gmail.com> wrote:
Hello everyone 

durring welding of new pipeline 12'' we found that we are cross a pipeline in service  what is the correct procedure to do 

- we will cross our pipeline from the top or we should make it down the existing pipeline in service 

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https://www.linkedin.com/groups/122787
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KRISHNASAMY MASANAM

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Apr 19, 2020, 1:00:59 AM4/19/20
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Hi

Have good day... For this issue you have to ask your pipeline's end user and the existing pipeline user.

From: material...@googlegroups.com <material...@googlegroups.com> on behalf of QA/QC <adnan...@gmail.com>
Sent: Saturday, April 18, 2020 11:59:56 AM
To: Materials & Welding <material...@googlegroups.com>
Subject: [MW:30784] two Pipeline crossing
 
Hello everyone 

durring welding of new pipeline 12'' we found that we are cross a pipeline in service  what is the correct procedure to do 

- we will cross our pipeline from the top or we should make it down the existing pipeline in service 

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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Harish Kannepalli

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Apr 19, 2020, 1:00:59 AM4/19/20
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Hi,
   For two pipeline crossing each other you have to consider the following:
1. Cathodic protection of existing pipeline, these currents will interfere with new one
2. Temperature of fluid passing in the existing pipeline
3. Type of external coating on existing pipeline
4. Any external stresses above ground

Regards,
Harish Kumar

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KRISHNASAMY MASANAM

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Apr 19, 2020, 2:03:23 AM4/19/20
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HI

There is no reference in the API 1104, but you have to got permission from the existing pipeline owner, who can give direction about the clearance between new and existing pipeline, because of pipeline details such as pressure, velocity, kind of medium and exiting pipeline coating systems to be given by them. those all times shall be considered during the excavation. 

Kindly get advise from your designer... 

Thanks and regards,

KRISHNASAMY MASANAM

Cell:             +91 98431 58057
WhatsApp: +91 94877 58057



Sent: Saturday, April 18, 2020 7:19 PM

To: Materials & Welding <material...@googlegroups.com>
Subject: Re: [MW:30792] two Pipeline crossing
 
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Shrichand Ghanshyam Bathv

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Apr 19, 2020, 2:36:57 AM4/19/20
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Dear All, 

Please see the attached pipe spacing standard drawings for your reference and record. 

Thank you for your consideration. I look forward to hearing from you. Your Immediate Response will be Highly Appreciated.

Best Regards

Shrichand Ghanshyam Bathv 

Mobile Number : 0091 8551911459

Email Id : shricha...@gmail.com 

Skype Id : shrichand.bathv 

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AB-036207-001.pdf

KRISHNASAMY MASANAM

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Apr 19, 2020, 4:13:16 AM4/19/20
to material...@googlegroups.com
Hi,

This Saudi Aramco standard drawing, as per SAES-L-450 and SAEP 410... If you are working in Saudi Aramco construction, you can use this... 

From: material...@googlegroups.com <material...@googlegroups.com> on behalf of Shrichand Ghanshyam Bathv <shricha...@gmail.com>
Sent: Sunday, April 19, 2020 11:34:03 AM
To: material...@googlegroups.com <material...@googlegroups.com>
Subject: Re: [MW:30799] two Pipeline crossing
 
From: material...@googlegroups.com <material...@googlegroups.com> on behalf of Shrichand Ghanshyam Bathv <shricha...@gmail.com>
Sent: Sunday, April 19, 2020 11:34:03 AM
To: material...@googlegroups.com <material...@googlegroups.com>
Subject: Re: [MW:30799] two Pipeline crossing
 

MADHUSOODHANAN NAIR .G

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Apr 19, 2020, 11:21:44 AM4/19/20
to material...@googlegroups.com
Dear All
     The API 1104 is describing only Welding of pipelines and related facilities and in service welding. One sample drawing I have attached      for your reference. If required you can use this drawing after the acceptance from concerned authorities.
    
image.png
 Madhusoodhanan Nair.G
 Sr. Manager (Operations)
 VCS Quality Services Pvt Ltd
 Mob- 7977762694,9967901872


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José Juan Jiménez Alejandro

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Apr 21, 2020, 12:36:57 AM4/21/20
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image.png

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Independent Consultant in Parts

and Pressure Equipment

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