Re: [MW:30792] two Pipeline crossing

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

On Sat, 18 Apr 2020, 17:02 QA/QC, <adnanziad49@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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